./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 906a4fb5 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -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/forester-heap/dll-rb-sentinel-1.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 9aa86be9eb0317030839433587db2b1c5b5e93d6 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 -Xmx12G -Xms1G -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/forester-heap/dll-rb-sentinel-1.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 9aa86be9eb0317030839433587db2b1c5b5e93d6 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.1.25-906a4fb [2020-10-19 18:12:36,870 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-19 18:12:36,873 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-19 18:12:36,897 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-19 18:12:36,897 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-19 18:12:36,899 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-19 18:12:36,900 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-19 18:12:36,902 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-19 18:12:36,904 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-19 18:12:36,905 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-19 18:12:36,907 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-19 18:12:36,908 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-19 18:12:36,908 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-19 18:12:36,909 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-19 18:12:36,911 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-19 18:12:36,912 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-19 18:12:36,913 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-19 18:12:36,914 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-19 18:12:36,916 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-19 18:12:36,920 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-19 18:12:36,922 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-19 18:12:36,923 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-19 18:12:36,926 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-19 18:12:36,931 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-19 18:12:36,935 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-19 18:12:36,939 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-19 18:12:36,941 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-19 18:12:36,943 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-19 18:12:36,943 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-19 18:12:36,944 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-19 18:12:36,944 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-19 18:12:36,946 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-19 18:12:36,947 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-19 18:12:36,948 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-19 18:12:36,949 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-19 18:12:36,950 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-19 18:12:36,950 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-19 18:12:36,951 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-19 18:12:36,951 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-19 18:12:36,952 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-19 18:12:36,953 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-19 18:12:36,954 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-10-19 18:12:36,980 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-19 18:12:36,981 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-19 18:12:36,982 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-19 18:12:36,982 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-19 18:12:36,983 INFO L138 SettingsManager]: * Use SBE=true [2020-10-19 18:12:36,983 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-19 18:12:36,983 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-19 18:12:36,984 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-19 18:12:36,984 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-19 18:12:36,984 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-19 18:12:36,985 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-19 18:12:36,985 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-10-19 18:12:36,985 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-10-19 18:12:36,985 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-10-19 18:12:36,986 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-19 18:12:36,986 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-10-19 18:12:36,986 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-19 18:12:36,987 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-19 18:12:36,987 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-19 18:12:36,987 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-19 18:12:36,987 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-19 18:12:36,988 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-19 18:12:36,988 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 18:12:36,988 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-19 18:12:36,989 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-19 18:12:36,989 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-19 18:12:36,989 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-19 18:12:36,990 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-19 18:12:36,990 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 -> 9aa86be9eb0317030839433587db2b1c5b5e93d6 [2020-10-19 18:12:37,324 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-19 18:12:37,337 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-19 18:12:37,341 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-19 18:12:37,342 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-19 18:12:37,343 INFO L275 PluginConnector]: CDTParser initialized [2020-10-19 18:12:37,344 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i [2020-10-19 18:12:37,406 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2ada7f84/7e68296b8cbe454c8fde1b09f539df91/FLAG1c52e5b2a [2020-10-19 18:12:37,876 INFO L306 CDTParser]: Found 1 translation units. [2020-10-19 18:12:37,877 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i [2020-10-19 18:12:37,890 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2ada7f84/7e68296b8cbe454c8fde1b09f539df91/FLAG1c52e5b2a [2020-10-19 18:12:38,223 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2ada7f84/7e68296b8cbe454c8fde1b09f539df91 [2020-10-19 18:12:38,227 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-19 18:12:38,232 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-19 18:12:38,234 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-19 18:12:38,234 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-19 18:12:38,238 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-19 18:12:38,239 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:12:38" (1/1) ... [2020-10-19 18:12:38,242 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7987071b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:12:38, skipping insertion in model container [2020-10-19 18:12:38,242 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:12:38" (1/1) ... [2020-10-19 18:12:38,250 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-19 18:12:38,315 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 18:12:38,850 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:12:38,860 INFO L203 MainTranslator]: Completed pre-run [2020-10-19 18:12:38,906 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:12:38,964 INFO L208 MainTranslator]: Completed translation [2020-10-19 18:12:38,965 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:12:38 WrapperNode [2020-10-19 18:12:38,965 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-19 18:12:38,966 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-19 18:12:38,967 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-19 18:12:38,967 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-19 18:12:38,982 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:12:38" (1/1) ... [2020-10-19 18:12:38,983 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:12:38" (1/1) ... [2020-10-19 18:12:39,000 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:12:38" (1/1) ... [2020-10-19 18:12:39,001 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:12:38" (1/1) ... [2020-10-19 18:12:39,023 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:12:38" (1/1) ... [2020-10-19 18:12:39,032 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:12:38" (1/1) ... [2020-10-19 18:12:39,036 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:12:38" (1/1) ... [2020-10-19 18:12:39,044 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-19 18:12:39,045 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-19 18:12:39,045 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-19 18:12:39,045 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-19 18:12:39,047 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:12:38" (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 [2020-10-19 18:12:39,112 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-19 18:12:39,112 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-19 18:12:39,113 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-19 18:12:39,113 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-19 18:12:39,113 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-19 18:12:39,114 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-19 18:12:39,114 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-19 18:12:39,114 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-19 18:12:39,114 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-19 18:12:39,114 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-19 18:12:39,115 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-19 18:12:39,115 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-19 18:12:39,115 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-19 18:12:39,115 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-19 18:12:39,116 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-19 18:12:39,116 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-19 18:12:39,116 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-19 18:12:39,116 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-19 18:12:39,117 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-19 18:12:39,117 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-19 18:12:39,117 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-19 18:12:39,117 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-19 18:12:39,117 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-19 18:12:39,118 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-19 18:12:39,118 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-19 18:12:39,118 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-19 18:12:39,118 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-19 18:12:39,119 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-19 18:12:39,119 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-19 18:12:39,119 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-19 18:12:39,119 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-19 18:12:39,119 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-19 18:12:39,120 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-19 18:12:39,120 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-19 18:12:39,120 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-19 18:12:39,120 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-19 18:12:39,121 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-19 18:12:39,121 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-19 18:12:39,121 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-19 18:12:39,121 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-19 18:12:39,121 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-19 18:12:39,122 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-19 18:12:39,122 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-19 18:12:39,122 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-19 18:12:39,122 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-19 18:12:39,122 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-19 18:12:39,123 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-19 18:12:39,123 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-19 18:12:39,123 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-19 18:12:39,123 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-19 18:12:39,123 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-19 18:12:39,124 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-19 18:12:39,124 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-19 18:12:39,124 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-19 18:12:39,124 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-19 18:12:39,125 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-19 18:12:39,125 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-19 18:12:39,125 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-19 18:12:39,125 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-19 18:12:39,125 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-19 18:12:39,126 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-19 18:12:39,126 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-19 18:12:39,126 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-19 18:12:39,126 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-19 18:12:39,126 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-19 18:12:39,127 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-19 18:12:39,127 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-19 18:12:39,127 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-19 18:12:39,127 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-19 18:12:39,127 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-19 18:12:39,128 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-19 18:12:39,128 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-19 18:12:39,128 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-19 18:12:39,128 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-19 18:12:39,129 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-19 18:12:39,129 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-19 18:12:39,129 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-19 18:12:39,129 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-19 18:12:39,129 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-19 18:12:39,130 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-19 18:12:39,130 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-19 18:12:39,130 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-19 18:12:39,130 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-19 18:12:39,131 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-19 18:12:39,131 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-19 18:12:39,131 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-19 18:12:39,131 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-19 18:12:39,131 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-19 18:12:39,132 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-19 18:12:39,132 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-19 18:12:39,132 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-19 18:12:39,132 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-19 18:12:39,132 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-19 18:12:39,133 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-19 18:12:39,133 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-19 18:12:39,133 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-19 18:12:39,133 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-19 18:12:39,133 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-19 18:12:39,134 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-19 18:12:39,134 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-19 18:12:39,134 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-19 18:12:39,134 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-19 18:12:39,134 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-19 18:12:39,135 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-19 18:12:39,135 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-19 18:12:39,135 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-19 18:12:39,135 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-19 18:12:39,135 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-19 18:12:39,136 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-19 18:12:39,136 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-19 18:12:39,136 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-19 18:12:39,136 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-19 18:12:39,136 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-19 18:12:39,137 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-19 18:12:39,137 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-19 18:12:39,137 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-19 18:12:39,137 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-19 18:12:39,137 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-19 18:12:39,138 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-19 18:12:39,138 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-19 18:12:39,138 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-19 18:12:39,138 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-19 18:12:39,138 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-19 18:12:39,960 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-19 18:12:39,961 INFO L298 CfgBuilder]: Removed 17 assume(true) statements. [2020-10-19 18:12:39,963 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:12:39 BoogieIcfgContainer [2020-10-19 18:12:39,963 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-19 18:12:39,965 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-19 18:12:39,965 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-19 18:12:39,969 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-19 18:12:39,970 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.10 06:12:38" (1/3) ... [2020-10-19 18:12:39,971 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5517f2da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 06:12:39, skipping insertion in model container [2020-10-19 18:12:39,971 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:12:38" (2/3) ... [2020-10-19 18:12:39,972 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5517f2da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 06:12:39, skipping insertion in model container [2020-10-19 18:12:39,972 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:12:39" (3/3) ... [2020-10-19 18:12:39,974 INFO L111 eAbstractionObserver]: Analyzing ICFG dll-rb-sentinel-1.i [2020-10-19 18:12:39,987 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-19 18:12:39,996 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 71 error locations. [2020-10-19 18:12:40,012 INFO L253 AbstractCegarLoop]: Starting to check reachability of 71 error locations. [2020-10-19 18:12:40,035 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-19 18:12:40,036 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-19 18:12:40,036 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-19 18:12:40,036 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-19 18:12:40,037 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-19 18:12:40,037 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-19 18:12:40,037 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-19 18:12:40,038 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-19 18:12:40,062 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states. [2020-10-19 18:12:40,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-19 18:12:40,072 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:12:40,074 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:12:40,074 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ASSERT_VIOLATIONMEMORY_FREE, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr69ENSURES_VIOLATIONMEMORY_LEAK, mainErr68ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67ASSERT_VIOLATIONMEMORY_FREE, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr57ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr62ASSERT_VIOLATIONMEMORY_FREE, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr66ASSERT_VIOLATIONMEMORY_FREE, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-10-19 18:12:40,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:12:40,082 INFO L82 PathProgramCache]: Analyzing trace with hash 1063257867, now seen corresponding path program 1 times [2020-10-19 18:12:40,093 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:12:40,094 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177082618] [2020-10-19 18:12:40,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:12:40,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:12:40,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:12:40,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:12:40,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:12:40,353 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177082618] [2020-10-19 18:12:40,354 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:12:40,355 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 18:12:40,356 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227360232] [2020-10-19 18:12:40,361 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:12:40,362 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:12:40,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:12:40,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:12:40,382 INFO L87 Difference]: Start difference. First operand 174 states. Second operand 4 states. [2020-10-19 18:12:40,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:12:40,842 INFO L93 Difference]: Finished difference Result 191 states and 204 transitions. [2020-10-19 18:12:40,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:12:40,844 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-10-19 18:12:40,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:12:40,857 INFO L225 Difference]: With dead ends: 191 [2020-10-19 18:12:40,858 INFO L226 Difference]: Without dead ends: 187 [2020-10-19 18:12:40,860 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:12:40,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2020-10-19 18:12:40,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 159. [2020-10-19 18:12:40,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-10-19 18:12:40,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 170 transitions. [2020-10-19 18:12:40,917 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 170 transitions. Word has length 7 [2020-10-19 18:12:40,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:12:40,918 INFO L481 AbstractCegarLoop]: Abstraction has 159 states and 170 transitions. [2020-10-19 18:12:40,918 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:12:40,918 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 170 transitions. [2020-10-19 18:12:40,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-19 18:12:40,919 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:12:40,919 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:12:40,920 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-19 18:12:40,920 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ASSERT_VIOLATIONMEMORY_FREE, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr69ENSURES_VIOLATIONMEMORY_LEAK, mainErr68ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67ASSERT_VIOLATIONMEMORY_FREE, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr57ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr62ASSERT_VIOLATIONMEMORY_FREE, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr66ASSERT_VIOLATIONMEMORY_FREE, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-10-19 18:12:40,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:12:40,921 INFO L82 PathProgramCache]: Analyzing trace with hash 1063257868, now seen corresponding path program 1 times [2020-10-19 18:12:40,921 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:12:40,922 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260323777] [2020-10-19 18:12:40,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:12:40,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:12:41,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:12:41,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:12:41,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:12:41,020 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260323777] [2020-10-19 18:12:41,021 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:12:41,021 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 18:12:41,021 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204729533] [2020-10-19 18:12:41,023 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:12:41,023 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:12:41,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:12:41,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:12:41,024 INFO L87 Difference]: Start difference. First operand 159 states and 170 transitions. Second operand 4 states. [2020-10-19 18:12:41,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:12:41,376 INFO L93 Difference]: Finished difference Result 156 states and 167 transitions. [2020-10-19 18:12:41,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:12:41,377 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-10-19 18:12:41,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:12:41,380 INFO L225 Difference]: With dead ends: 156 [2020-10-19 18:12:41,380 INFO L226 Difference]: Without dead ends: 156 [2020-10-19 18:12:41,381 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:12:41,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2020-10-19 18:12:41,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 156. [2020-10-19 18:12:41,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-10-19 18:12:41,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 167 transitions. [2020-10-19 18:12:41,396 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 167 transitions. Word has length 7 [2020-10-19 18:12:41,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:12:41,396 INFO L481 AbstractCegarLoop]: Abstraction has 156 states and 167 transitions. [2020-10-19 18:12:41,397 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:12:41,397 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 167 transitions. [2020-10-19 18:12:41,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-19 18:12:41,398 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:12:41,398 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:12:41,398 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-19 18:12:41,399 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ASSERT_VIOLATIONMEMORY_FREE, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr69ENSURES_VIOLATIONMEMORY_LEAK, mainErr68ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67ASSERT_VIOLATIONMEMORY_FREE, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr57ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr62ASSERT_VIOLATIONMEMORY_FREE, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr66ASSERT_VIOLATIONMEMORY_FREE, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-10-19 18:12:41,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:12:41,399 INFO L82 PathProgramCache]: Analyzing trace with hash -224884273, now seen corresponding path program 1 times [2020-10-19 18:12:41,400 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:12:41,400 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55366485] [2020-10-19 18:12:41,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:12:41,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:12:41,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:12:41,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:12:41,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:12:41,532 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55366485] [2020-10-19 18:12:41,534 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:12:41,535 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 18:12:41,535 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495378639] [2020-10-19 18:12:41,536 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:12:41,536 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:12:41,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:12:41,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:12:41,539 INFO L87 Difference]: Start difference. First operand 156 states and 167 transitions. Second operand 4 states. [2020-10-19 18:12:41,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:12:41,871 INFO L93 Difference]: Finished difference Result 155 states and 166 transitions. [2020-10-19 18:12:41,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:12:41,871 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-10-19 18:12:41,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:12:41,873 INFO L225 Difference]: With dead ends: 155 [2020-10-19 18:12:41,873 INFO L226 Difference]: Without dead ends: 155 [2020-10-19 18:12:41,874 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:12:41,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-10-19 18:12:41,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 151. [2020-10-19 18:12:41,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2020-10-19 18:12:41,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 164 transitions. [2020-10-19 18:12:41,883 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 164 transitions. Word has length 11 [2020-10-19 18:12:41,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:12:41,884 INFO L481 AbstractCegarLoop]: Abstraction has 151 states and 164 transitions. [2020-10-19 18:12:41,884 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:12:41,884 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 164 transitions. [2020-10-19 18:12:41,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-19 18:12:41,885 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:12:41,885 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:12:41,885 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-19 18:12:41,885 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ASSERT_VIOLATIONMEMORY_FREE, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr69ENSURES_VIOLATIONMEMORY_LEAK, mainErr68ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67ASSERT_VIOLATIONMEMORY_FREE, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr57ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr62ASSERT_VIOLATIONMEMORY_FREE, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr66ASSERT_VIOLATIONMEMORY_FREE, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-10-19 18:12:41,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:12:41,886 INFO L82 PathProgramCache]: Analyzing trace with hash -224884272, now seen corresponding path program 1 times [2020-10-19 18:12:41,886 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:12:41,886 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838103235] [2020-10-19 18:12:41,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:12:41,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:12:41,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:12:41,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:12:41,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:12:41,989 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838103235] [2020-10-19 18:12:41,990 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:12:41,990 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 18:12:41,990 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570788364] [2020-10-19 18:12:41,991 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:12:41,991 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:12:41,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:12:41,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:12:41,992 INFO L87 Difference]: Start difference. First operand 151 states and 164 transitions. Second operand 4 states. [2020-10-19 18:12:42,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:12:42,345 INFO L93 Difference]: Finished difference Result 168 states and 180 transitions. [2020-10-19 18:12:42,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:12:42,345 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-10-19 18:12:42,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:12:42,347 INFO L225 Difference]: With dead ends: 168 [2020-10-19 18:12:42,348 INFO L226 Difference]: Without dead ends: 168 [2020-10-19 18:12:42,348 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:12:42,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2020-10-19 18:12:42,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 155. [2020-10-19 18:12:42,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-10-19 18:12:42,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 168 transitions. [2020-10-19 18:12:42,364 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 168 transitions. Word has length 11 [2020-10-19 18:12:42,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:12:42,365 INFO L481 AbstractCegarLoop]: Abstraction has 155 states and 168 transitions. [2020-10-19 18:12:42,365 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:12:42,365 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 168 transitions. [2020-10-19 18:12:42,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-19 18:12:42,366 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:12:42,366 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:12:42,367 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-19 18:12:42,367 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ASSERT_VIOLATIONMEMORY_FREE, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr69ENSURES_VIOLATIONMEMORY_LEAK, mainErr68ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67ASSERT_VIOLATIONMEMORY_FREE, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr57ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr62ASSERT_VIOLATIONMEMORY_FREE, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr66ASSERT_VIOLATIONMEMORY_FREE, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-10-19 18:12:42,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:12:42,368 INFO L82 PathProgramCache]: Analyzing trace with hash -1814833992, now seen corresponding path program 1 times [2020-10-19 18:12:42,368 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:12:42,368 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313347550] [2020-10-19 18:12:42,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:12:42,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:12:42,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:12:42,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:12:42,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:12:42,482 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313347550] [2020-10-19 18:12:42,482 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:12:42,482 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 18:12:42,483 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530277071] [2020-10-19 18:12:42,483 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-19 18:12:42,483 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:12:42,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-19 18:12:42,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-19 18:12:42,484 INFO L87 Difference]: Start difference. First operand 155 states and 168 transitions. Second operand 5 states. [2020-10-19 18:12:42,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:12:42,851 INFO L93 Difference]: Finished difference Result 156 states and 170 transitions. [2020-10-19 18:12:42,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-19 18:12:42,852 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-10-19 18:12:42,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:12:42,854 INFO L225 Difference]: With dead ends: 156 [2020-10-19 18:12:42,854 INFO L226 Difference]: Without dead ends: 156 [2020-10-19 18:12:42,855 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-19 18:12:42,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2020-10-19 18:12:42,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 142. [2020-10-19 18:12:42,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-19 18:12:42,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 157 transitions. [2020-10-19 18:12:42,861 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 157 transitions. Word has length 17 [2020-10-19 18:12:42,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:12:42,861 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 157 transitions. [2020-10-19 18:12:42,862 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-19 18:12:42,862 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 157 transitions. [2020-10-19 18:12:42,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-19 18:12:42,862 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:12:42,862 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:12:42,863 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-19 18:12:42,863 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ASSERT_VIOLATIONMEMORY_FREE, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr69ENSURES_VIOLATIONMEMORY_LEAK, mainErr68ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67ASSERT_VIOLATIONMEMORY_FREE, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr57ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr62ASSERT_VIOLATIONMEMORY_FREE, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr66ASSERT_VIOLATIONMEMORY_FREE, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-10-19 18:12:42,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:12:42,863 INFO L82 PathProgramCache]: Analyzing trace with hash -1814833991, now seen corresponding path program 1 times [2020-10-19 18:12:42,864 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:12:42,864 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690006039] [2020-10-19 18:12:42,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:12:42,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:12:42,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:12:42,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:12:42,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:12:42,946 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690006039] [2020-10-19 18:12:42,946 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:12:42,946 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 18:12:42,947 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873861586] [2020-10-19 18:12:42,947 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-19 18:12:42,947 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:12:42,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-19 18:12:42,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-19 18:12:42,948 INFO L87 Difference]: Start difference. First operand 142 states and 157 transitions. Second operand 5 states. [2020-10-19 18:12:43,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:12:43,370 INFO L93 Difference]: Finished difference Result 180 states and 196 transitions. [2020-10-19 18:12:43,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-19 18:12:43,371 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-10-19 18:12:43,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:12:43,373 INFO L225 Difference]: With dead ends: 180 [2020-10-19 18:12:43,373 INFO L226 Difference]: Without dead ends: 180 [2020-10-19 18:12:43,374 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-19 18:12:43,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2020-10-19 18:12:43,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 151. [2020-10-19 18:12:43,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2020-10-19 18:12:43,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 169 transitions. [2020-10-19 18:12:43,381 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 169 transitions. Word has length 17 [2020-10-19 18:12:43,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:12:43,381 INFO L481 AbstractCegarLoop]: Abstraction has 151 states and 169 transitions. [2020-10-19 18:12:43,381 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-19 18:12:43,381 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 169 transitions. [2020-10-19 18:12:43,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-19 18:12:43,382 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:12:43,382 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:12:43,383 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-19 18:12:43,383 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ASSERT_VIOLATIONMEMORY_FREE, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr69ENSURES_VIOLATIONMEMORY_LEAK, mainErr68ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67ASSERT_VIOLATIONMEMORY_FREE, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr57ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr62ASSERT_VIOLATIONMEMORY_FREE, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr66ASSERT_VIOLATIONMEMORY_FREE, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-10-19 18:12:43,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:12:43,384 INFO L82 PathProgramCache]: Analyzing trace with hash -298743653, now seen corresponding path program 1 times [2020-10-19 18:12:43,384 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:12:43,384 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176680884] [2020-10-19 18:12:43,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:12:43,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:12:43,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:12:43,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:12:43,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:12:43,452 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176680884] [2020-10-19 18:12:43,453 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:12:43,453 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-19 18:12:43,453 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670496456] [2020-10-19 18:12:43,454 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-19 18:12:43,454 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:12:43,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-19 18:12:43,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-19 18:12:43,455 INFO L87 Difference]: Start difference. First operand 151 states and 169 transitions. Second operand 6 states. [2020-10-19 18:12:43,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:12:43,921 INFO L93 Difference]: Finished difference Result 201 states and 227 transitions. [2020-10-19 18:12:43,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-19 18:12:43,921 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-10-19 18:12:43,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:12:43,923 INFO L225 Difference]: With dead ends: 201 [2020-10-19 18:12:43,923 INFO L226 Difference]: Without dead ends: 201 [2020-10-19 18:12:43,923 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-19 18:12:43,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2020-10-19 18:12:43,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 150. [2020-10-19 18:12:43,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-10-19 18:12:43,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 167 transitions. [2020-10-19 18:12:43,929 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 167 transitions. Word has length 19 [2020-10-19 18:12:43,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:12:43,929 INFO L481 AbstractCegarLoop]: Abstraction has 150 states and 167 transitions. [2020-10-19 18:12:43,929 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-19 18:12:43,930 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 167 transitions. [2020-10-19 18:12:43,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-19 18:12:43,930 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:12:43,930 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:12:43,931 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-19 18:12:43,931 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ASSERT_VIOLATIONMEMORY_FREE, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr69ENSURES_VIOLATIONMEMORY_LEAK, mainErr68ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67ASSERT_VIOLATIONMEMORY_FREE, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr57ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr62ASSERT_VIOLATIONMEMORY_FREE, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr66ASSERT_VIOLATIONMEMORY_FREE, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-10-19 18:12:43,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:12:43,931 INFO L82 PathProgramCache]: Analyzing trace with hash -298743652, now seen corresponding path program 1 times [2020-10-19 18:12:43,932 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:12:43,932 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89794800] [2020-10-19 18:12:43,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:12:43,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:12:44,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:12:44,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:12:44,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:12:44,012 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89794800] [2020-10-19 18:12:44,013 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:12:44,013 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-19 18:12:44,013 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830948381] [2020-10-19 18:12:44,013 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-19 18:12:44,014 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:12:44,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-19 18:12:44,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-19 18:12:44,014 INFO L87 Difference]: Start difference. First operand 150 states and 167 transitions. Second operand 6 states. [2020-10-19 18:12:44,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:12:44,568 INFO L93 Difference]: Finished difference Result 224 states and 251 transitions. [2020-10-19 18:12:44,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-19 18:12:44,568 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-10-19 18:12:44,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:12:44,570 INFO L225 Difference]: With dead ends: 224 [2020-10-19 18:12:44,570 INFO L226 Difference]: Without dead ends: 224 [2020-10-19 18:12:44,570 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-19 18:12:44,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2020-10-19 18:12:44,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 149. [2020-10-19 18:12:44,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-10-19 18:12:44,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 165 transitions. [2020-10-19 18:12:44,576 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 165 transitions. Word has length 19 [2020-10-19 18:12:44,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:12:44,576 INFO L481 AbstractCegarLoop]: Abstraction has 149 states and 165 transitions. [2020-10-19 18:12:44,576 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-19 18:12:44,576 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 165 transitions. [2020-10-19 18:12:44,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-19 18:12:44,577 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:12:44,577 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:12:44,577 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-19 18:12:44,578 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ASSERT_VIOLATIONMEMORY_FREE, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr69ENSURES_VIOLATIONMEMORY_LEAK, mainErr68ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67ASSERT_VIOLATIONMEMORY_FREE, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr57ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr62ASSERT_VIOLATIONMEMORY_FREE, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr66ASSERT_VIOLATIONMEMORY_FREE, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-10-19 18:12:44,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:12:44,578 INFO L82 PathProgramCache]: Analyzing trace with hash 719067562, now seen corresponding path program 1 times [2020-10-19 18:12:44,578 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:12:44,579 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587817491] [2020-10-19 18:12:44,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:12:44,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:12:44,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:12:44,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:12:44,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:12:44,654 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587817491] [2020-10-19 18:12:44,654 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:12:44,654 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-19 18:12:44,655 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876040404] [2020-10-19 18:12:44,655 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-19 18:12:44,655 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:12:44,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-19 18:12:44,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-19 18:12:44,656 INFO L87 Difference]: Start difference. First operand 149 states and 165 transitions. Second operand 6 states. [2020-10-19 18:12:45,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:12:45,058 INFO L93 Difference]: Finished difference Result 191 states and 205 transitions. [2020-10-19 18:12:45,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-19 18:12:45,058 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2020-10-19 18:12:45,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:12:45,061 INFO L225 Difference]: With dead ends: 191 [2020-10-19 18:12:45,061 INFO L226 Difference]: Without dead ends: 191 [2020-10-19 18:12:45,061 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-19 18:12:45,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-10-19 18:12:45,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 148. [2020-10-19 18:12:45,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2020-10-19 18:12:45,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 161 transitions. [2020-10-19 18:12:45,074 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 161 transitions. Word has length 21 [2020-10-19 18:12:45,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:12:45,074 INFO L481 AbstractCegarLoop]: Abstraction has 148 states and 161 transitions. [2020-10-19 18:12:45,074 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-19 18:12:45,074 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 161 transitions. [2020-10-19 18:12:45,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-19 18:12:45,075 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:12:45,075 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] [2020-10-19 18:12:45,076 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-19 18:12:45,076 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ASSERT_VIOLATIONMEMORY_FREE, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr69ENSURES_VIOLATIONMEMORY_LEAK, mainErr68ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67ASSERT_VIOLATIONMEMORY_FREE, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr57ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr62ASSERT_VIOLATIONMEMORY_FREE, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr66ASSERT_VIOLATIONMEMORY_FREE, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-10-19 18:12:45,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:12:45,077 INFO L82 PathProgramCache]: Analyzing trace with hash 2072080786, now seen corresponding path program 1 times [2020-10-19 18:12:45,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:12:45,077 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354826299] [2020-10-19 18:12:45,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:12:45,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:12:45,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:12:45,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:12:45,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:12:45,238 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354826299] [2020-10-19 18:12:45,238 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:12:45,239 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-19 18:12:45,239 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581798940] [2020-10-19 18:12:45,239 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-19 18:12:45,239 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:12:45,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-19 18:12:45,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-19 18:12:45,240 INFO L87 Difference]: Start difference. First operand 148 states and 161 transitions. Second operand 7 states. [2020-10-19 18:12:45,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:12:45,627 INFO L93 Difference]: Finished difference Result 200 states and 219 transitions. [2020-10-19 18:12:45,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-19 18:12:45,627 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 24 [2020-10-19 18:12:45,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:12:45,629 INFO L225 Difference]: With dead ends: 200 [2020-10-19 18:12:45,629 INFO L226 Difference]: Without dead ends: 200 [2020-10-19 18:12:45,629 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-19 18:12:45,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2020-10-19 18:12:45,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 153. [2020-10-19 18:12:45,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-10-19 18:12:45,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 166 transitions. [2020-10-19 18:12:45,636 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 166 transitions. Word has length 24 [2020-10-19 18:12:45,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:12:45,636 INFO L481 AbstractCegarLoop]: Abstraction has 153 states and 166 transitions. [2020-10-19 18:12:45,636 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-19 18:12:45,637 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 166 transitions. [2020-10-19 18:12:45,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-19 18:12:45,638 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:12:45,638 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:12:45,638 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-19 18:12:45,639 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ASSERT_VIOLATIONMEMORY_FREE, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr69ENSURES_VIOLATIONMEMORY_LEAK, mainErr68ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67ASSERT_VIOLATIONMEMORY_FREE, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr57ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr62ASSERT_VIOLATIONMEMORY_FREE, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr66ASSERT_VIOLATIONMEMORY_FREE, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-10-19 18:12:45,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:12:45,639 INFO L82 PathProgramCache]: Analyzing trace with hash -222321507, now seen corresponding path program 1 times [2020-10-19 18:12:45,640 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:12:45,640 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145491658] [2020-10-19 18:12:45,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:12:45,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:12:45,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:12:45,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:12:45,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:12:45,762 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145491658] [2020-10-19 18:12:45,762 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:12:45,763 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-19 18:12:45,763 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30817763] [2020-10-19 18:12:45,764 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-19 18:12:45,764 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:12:45,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-19 18:12:45,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-19 18:12:45,765 INFO L87 Difference]: Start difference. First operand 153 states and 166 transitions. Second operand 10 states. [2020-10-19 18:12:46,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:12:46,374 INFO L93 Difference]: Finished difference Result 152 states and 165 transitions. [2020-10-19 18:12:46,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-19 18:12:46,375 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 23 [2020-10-19 18:12:46,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:12:46,376 INFO L225 Difference]: With dead ends: 152 [2020-10-19 18:12:46,376 INFO L226 Difference]: Without dead ends: 152 [2020-10-19 18:12:46,376 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-10-19 18:12:46,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2020-10-19 18:12:46,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2020-10-19 18:12:46,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-10-19 18:12:46,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 165 transitions. [2020-10-19 18:12:46,384 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 165 transitions. Word has length 23 [2020-10-19 18:12:46,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:12:46,385 INFO L481 AbstractCegarLoop]: Abstraction has 152 states and 165 transitions. [2020-10-19 18:12:46,385 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-19 18:12:46,385 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 165 transitions. [2020-10-19 18:12:46,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-19 18:12:46,391 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:12:46,391 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:12:46,391 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-19 18:12:46,392 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ASSERT_VIOLATIONMEMORY_FREE, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr69ENSURES_VIOLATIONMEMORY_LEAK, mainErr68ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67ASSERT_VIOLATIONMEMORY_FREE, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr57ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr62ASSERT_VIOLATIONMEMORY_FREE, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr66ASSERT_VIOLATIONMEMORY_FREE, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-10-19 18:12:46,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:12:46,392 INFO L82 PathProgramCache]: Analyzing trace with hash -222321506, now seen corresponding path program 1 times [2020-10-19 18:12:46,393 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:12:46,393 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218713789] [2020-10-19 18:12:46,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:12:46,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:12:46,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:12:46,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:12:46,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:12:46,601 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218713789] [2020-10-19 18:12:46,601 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:12:46,601 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-19 18:12:46,601 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437561178] [2020-10-19 18:12:46,602 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-19 18:12:46,602 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:12:46,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-19 18:12:46,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-19 18:12:46,603 INFO L87 Difference]: Start difference. First operand 152 states and 165 transitions. Second operand 11 states. [2020-10-19 18:12:47,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:12:47,508 INFO L93 Difference]: Finished difference Result 166 states and 183 transitions. [2020-10-19 18:12:47,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-19 18:12:47,509 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 23 [2020-10-19 18:12:47,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:12:47,511 INFO L225 Difference]: With dead ends: 166 [2020-10-19 18:12:47,511 INFO L226 Difference]: Without dead ends: 166 [2020-10-19 18:12:47,512 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2020-10-19 18:12:47,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-10-19 18:12:47,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 156. [2020-10-19 18:12:47,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-10-19 18:12:47,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 173 transitions. [2020-10-19 18:12:47,519 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 173 transitions. Word has length 23 [2020-10-19 18:12:47,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:12:47,520 INFO L481 AbstractCegarLoop]: Abstraction has 156 states and 173 transitions. [2020-10-19 18:12:47,520 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-19 18:12:47,520 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 173 transitions. [2020-10-19 18:12:47,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-19 18:12:47,521 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:12:47,522 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:12:47,522 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-19 18:12:47,522 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ASSERT_VIOLATIONMEMORY_FREE, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr69ENSURES_VIOLATIONMEMORY_LEAK, mainErr68ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67ASSERT_VIOLATIONMEMORY_FREE, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr57ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr62ASSERT_VIOLATIONMEMORY_FREE, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr66ASSERT_VIOLATIONMEMORY_FREE, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-10-19 18:12:47,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:12:47,523 INFO L82 PathProgramCache]: Analyzing trace with hash -1988184137, now seen corresponding path program 1 times [2020-10-19 18:12:47,523 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:12:47,523 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846939478] [2020-10-19 18:12:47,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:12:47,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:12:47,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:12:47,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:12:47,613 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:12:47,614 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846939478] [2020-10-19 18:12:47,614 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [930857757] [2020-10-19 18:12:47,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:12:47,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:12:47,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 19 conjunts are in the unsatisfiable core [2020-10-19 18:12:47,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:12:47,857 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 [2020-10-19 18:12:47,858 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:12:47,864 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:12:47,867 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 [2020-10-19 18:12:47,868 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-19 18:12:47,875 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:12:47,875 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:12:47,876 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:23, output treesize:15 [2020-10-19 18:12:47,901 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 21 [2020-10-19 18:12:47,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-19 18:12:47,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-19 18:12:47,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-19 18:12:47,918 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 20 [2020-10-19 18:12:47,920 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-19 18:12:47,925 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:12:47,925 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:12:47,935 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:12:47,939 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 21 [2020-10-19 18:12:47,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-19 18:12:47,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-19 18:12:47,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-19 18:12:47,952 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 20 [2020-10-19 18:12:47,953 INFO L545 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2020-10-19 18:12:47,957 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:12:47,957 INFO L545 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:12:47,969 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:12:47,970 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:12:47,970 INFO L244 ElimStorePlain]: Needed 5 recursive calls to eliminate 2 variables, input treesize:51, output treesize:33 [2020-10-19 18:12:48,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-19 18:12:48,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-19 18:12:48,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-19 18:12:48,019 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2020-10-19 18:12:48,020 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:12:48,035 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:12:48,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-19 18:12:48,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-19 18:12:48,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-19 18:12:48,053 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2020-10-19 18:12:48,054 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-19 18:12:48,062 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:12:48,063 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:12:48,063 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:71, output treesize:33 [2020-10-19 18:12:48,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-19 18:12:48,114 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 10 [2020-10-19 18:12:48,116 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:12:48,124 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:12:48,130 INFO L350 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2020-10-19 18:12:48,130 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 10 [2020-10-19 18:12:48,132 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-19 18:12:48,139 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:12:48,139 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:12:48,140 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:47, output treesize:7 [2020-10-19 18:12:48,146 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:12:48,147 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 18:12:48,148 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-19 18:12:48,148 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296305456] [2020-10-19 18:12:48,149 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-19 18:12:48,149 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:12:48,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-19 18:12:48,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-19 18:12:48,150 INFO L87 Difference]: Start difference. First operand 156 states and 173 transitions. Second operand 9 states. [2020-10-19 18:12:48,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:12:48,710 INFO L93 Difference]: Finished difference Result 205 states and 228 transitions. [2020-10-19 18:12:48,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-19 18:12:48,711 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 29 [2020-10-19 18:12:48,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:12:48,712 INFO L225 Difference]: With dead ends: 205 [2020-10-19 18:12:48,712 INFO L226 Difference]: Without dead ends: 205 [2020-10-19 18:12:48,713 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 28 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2020-10-19 18:12:48,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2020-10-19 18:12:48,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 163. [2020-10-19 18:12:48,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-10-19 18:12:48,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 181 transitions. [2020-10-19 18:12:48,724 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 181 transitions. Word has length 29 [2020-10-19 18:12:48,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:12:48,725 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 181 transitions. [2020-10-19 18:12:48,725 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-19 18:12:48,725 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 181 transitions. [2020-10-19 18:12:48,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-19 18:12:48,726 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:12:48,727 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:12:48,927 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-10-19 18:12:48,928 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ASSERT_VIOLATIONMEMORY_FREE, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr69ENSURES_VIOLATIONMEMORY_LEAK, mainErr68ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67ASSERT_VIOLATIONMEMORY_FREE, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr57ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr62ASSERT_VIOLATIONMEMORY_FREE, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr66ASSERT_VIOLATIONMEMORY_FREE, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-10-19 18:12:48,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:12:48,929 INFO L82 PathProgramCache]: Analyzing trace with hash -1109240489, now seen corresponding path program 1 times [2020-10-19 18:12:48,929 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:12:48,930 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818875325] [2020-10-19 18:12:48,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:12:48,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:12:49,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:12:49,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:12:49,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:12:49,033 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818875325] [2020-10-19 18:12:49,034 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:12:49,034 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-19 18:12:49,034 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357006138] [2020-10-19 18:12:49,034 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-19 18:12:49,034 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:12:49,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-19 18:12:49,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-19 18:12:49,035 INFO L87 Difference]: Start difference. First operand 163 states and 181 transitions. Second operand 6 states. [2020-10-19 18:12:49,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:12:49,359 INFO L93 Difference]: Finished difference Result 166 states and 182 transitions. [2020-10-19 18:12:49,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-19 18:12:49,359 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 31 [2020-10-19 18:12:49,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:12:49,361 INFO L225 Difference]: With dead ends: 166 [2020-10-19 18:12:49,361 INFO L226 Difference]: Without dead ends: 166 [2020-10-19 18:12:49,362 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-19 18:12:49,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-10-19 18:12:49,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 162. [2020-10-19 18:12:49,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-10-19 18:12:49,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 178 transitions. [2020-10-19 18:12:49,367 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 178 transitions. Word has length 31 [2020-10-19 18:12:49,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:12:49,368 INFO L481 AbstractCegarLoop]: Abstraction has 162 states and 178 transitions. [2020-10-19 18:12:49,368 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-19 18:12:49,368 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 178 transitions. [2020-10-19 18:12:49,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-19 18:12:49,368 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:12:49,369 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:12:49,369 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-19 18:12:49,369 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ASSERT_VIOLATIONMEMORY_FREE, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr69ENSURES_VIOLATIONMEMORY_LEAK, mainErr68ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67ASSERT_VIOLATIONMEMORY_FREE, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr57ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr62ASSERT_VIOLATIONMEMORY_FREE, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr66ASSERT_VIOLATIONMEMORY_FREE, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-10-19 18:12:49,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:12:49,369 INFO L82 PathProgramCache]: Analyzing trace with hash 2107320774, now seen corresponding path program 1 times [2020-10-19 18:12:49,370 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:12:49,370 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499592603] [2020-10-19 18:12:49,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:12:49,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:12:49,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:12:49,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:12:49,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:12:49,448 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499592603] [2020-10-19 18:12:49,449 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:12:49,449 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-19 18:12:49,449 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462738763] [2020-10-19 18:12:49,449 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-19 18:12:49,450 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:12:49,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-19 18:12:49,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-19 18:12:49,450 INFO L87 Difference]: Start difference. First operand 162 states and 178 transitions. Second operand 6 states. [2020-10-19 18:12:49,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:12:49,985 INFO L93 Difference]: Finished difference Result 259 states and 287 transitions. [2020-10-19 18:12:49,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-19 18:12:49,985 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 30 [2020-10-19 18:12:49,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:12:49,988 INFO L225 Difference]: With dead ends: 259 [2020-10-19 18:12:49,988 INFO L226 Difference]: Without dead ends: 259 [2020-10-19 18:12:49,989 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-19 18:12:49,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2020-10-19 18:12:49,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 161. [2020-10-19 18:12:49,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-10-19 18:12:49,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 177 transitions. [2020-10-19 18:12:49,994 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 177 transitions. Word has length 30 [2020-10-19 18:12:49,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:12:49,995 INFO L481 AbstractCegarLoop]: Abstraction has 161 states and 177 transitions. [2020-10-19 18:12:49,995 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-19 18:12:49,995 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 177 transitions. [2020-10-19 18:12:49,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-19 18:12:49,996 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:12:49,996 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:12:49,996 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-19 18:12:49,996 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ASSERT_VIOLATIONMEMORY_FREE, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr69ENSURES_VIOLATIONMEMORY_LEAK, mainErr68ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67ASSERT_VIOLATIONMEMORY_FREE, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr57ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr62ASSERT_VIOLATIONMEMORY_FREE, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr66ASSERT_VIOLATIONMEMORY_FREE, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-10-19 18:12:49,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:12:49,996 INFO L82 PathProgramCache]: Analyzing trace with hash 2107320773, now seen corresponding path program 1 times [2020-10-19 18:12:49,997 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:12:49,997 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694198687] [2020-10-19 18:12:49,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:12:50,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:12:50,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:12:50,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:12:50,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:12:50,062 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694198687] [2020-10-19 18:12:50,062 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:12:50,062 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-19 18:12:50,063 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144016877] [2020-10-19 18:12:50,063 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-19 18:12:50,063 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:12:50,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-19 18:12:50,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-19 18:12:50,064 INFO L87 Difference]: Start difference. First operand 161 states and 177 transitions. Second operand 6 states. [2020-10-19 18:12:50,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:12:50,510 INFO L93 Difference]: Finished difference Result 231 states and 258 transitions. [2020-10-19 18:12:50,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-19 18:12:50,513 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 30 [2020-10-19 18:12:50,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:12:50,514 INFO L225 Difference]: With dead ends: 231 [2020-10-19 18:12:50,514 INFO L226 Difference]: Without dead ends: 231 [2020-10-19 18:12:50,515 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-19 18:12:50,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2020-10-19 18:12:50,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 160. [2020-10-19 18:12:50,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-10-19 18:12:50,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 176 transitions. [2020-10-19 18:12:50,522 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 176 transitions. Word has length 30 [2020-10-19 18:12:50,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:12:50,522 INFO L481 AbstractCegarLoop]: Abstraction has 160 states and 176 transitions. [2020-10-19 18:12:50,522 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-19 18:12:50,522 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 176 transitions. [2020-10-19 18:12:50,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-19 18:12:50,523 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:12:50,523 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:12:50,523 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-19 18:12:50,523 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ASSERT_VIOLATIONMEMORY_FREE, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr69ENSURES_VIOLATIONMEMORY_LEAK, mainErr68ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67ASSERT_VIOLATIONMEMORY_FREE, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr57ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr62ASSERT_VIOLATIONMEMORY_FREE, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr66ASSERT_VIOLATIONMEMORY_FREE, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-10-19 18:12:50,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:12:50,524 INFO L82 PathProgramCache]: Analyzing trace with hash 639963670, now seen corresponding path program 1 times [2020-10-19 18:12:50,524 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:12:50,524 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415001250] [2020-10-19 18:12:50,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:12:50,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:12:50,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:12:50,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:12:50,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:12:50,582 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415001250] [2020-10-19 18:12:50,582 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:12:50,582 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-19 18:12:50,583 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929046289] [2020-10-19 18:12:50,583 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-19 18:12:50,583 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:12:50,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-19 18:12:50,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-19 18:12:50,584 INFO L87 Difference]: Start difference. First operand 160 states and 176 transitions. Second operand 5 states. [2020-10-19 18:12:50,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:12:50,822 INFO L93 Difference]: Finished difference Result 162 states and 176 transitions. [2020-10-19 18:12:50,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-19 18:12:50,823 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2020-10-19 18:12:50,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:12:50,825 INFO L225 Difference]: With dead ends: 162 [2020-10-19 18:12:50,825 INFO L226 Difference]: Without dead ends: 162 [2020-10-19 18:12:50,826 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-19 18:12:50,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-10-19 18:12:50,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 159. [2020-10-19 18:12:50,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-10-19 18:12:50,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 173 transitions. [2020-10-19 18:12:50,832 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 173 transitions. Word has length 31 [2020-10-19 18:12:50,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:12:50,833 INFO L481 AbstractCegarLoop]: Abstraction has 159 states and 173 transitions. [2020-10-19 18:12:50,833 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-19 18:12:50,833 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 173 transitions. [2020-10-19 18:12:50,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-19 18:12:50,837 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:12:50,837 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:12:50,838 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-19 18:12:50,838 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ASSERT_VIOLATIONMEMORY_FREE, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr69ENSURES_VIOLATIONMEMORY_LEAK, mainErr68ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67ASSERT_VIOLATIONMEMORY_FREE, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr57ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr62ASSERT_VIOLATIONMEMORY_FREE, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr66ASSERT_VIOLATIONMEMORY_FREE, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-10-19 18:12:50,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:12:50,840 INFO L82 PathProgramCache]: Analyzing trace with hash 1851483541, now seen corresponding path program 1 times [2020-10-19 18:12:50,841 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:12:50,841 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17598141] [2020-10-19 18:12:50,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:12:50,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:12:50,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:12:50,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:12:50,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:12:50,961 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17598141] [2020-10-19 18:12:50,963 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:12:50,963 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-19 18:12:50,964 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089823612] [2020-10-19 18:12:50,964 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-19 18:12:50,966 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:12:50,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-19 18:12:50,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-19 18:12:50,968 INFO L87 Difference]: Start difference. First operand 159 states and 173 transitions. Second operand 5 states. [2020-10-19 18:12:51,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:12:51,201 INFO L93 Difference]: Finished difference Result 159 states and 171 transitions. [2020-10-19 18:12:51,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-19 18:12:51,202 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2020-10-19 18:12:51,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:12:51,203 INFO L225 Difference]: With dead ends: 159 [2020-10-19 18:12:51,204 INFO L226 Difference]: Without dead ends: 159 [2020-10-19 18:12:51,204 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-19 18:12:51,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-10-19 18:12:51,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 158. [2020-10-19 18:12:51,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-10-19 18:12:51,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 170 transitions. [2020-10-19 18:12:51,211 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 170 transitions. Word has length 34 [2020-10-19 18:12:51,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:12:51,212 INFO L481 AbstractCegarLoop]: Abstraction has 158 states and 170 transitions. [2020-10-19 18:12:51,212 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-19 18:12:51,212 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 170 transitions. [2020-10-19 18:12:51,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-19 18:12:51,213 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:12:51,214 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:12:51,214 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-19 18:12:51,215 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ASSERT_VIOLATIONMEMORY_FREE, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr69ENSURES_VIOLATIONMEMORY_LEAK, mainErr68ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67ASSERT_VIOLATIONMEMORY_FREE, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr57ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr62ASSERT_VIOLATIONMEMORY_FREE, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr66ASSERT_VIOLATIONMEMORY_FREE, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-10-19 18:12:51,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:12:51,215 INFO L82 PathProgramCache]: Analyzing trace with hash -2066827193, now seen corresponding path program 1 times [2020-10-19 18:12:51,215 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:12:51,216 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020007534] [2020-10-19 18:12:51,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:12:51,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:12:51,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:12:51,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:12:51,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:12:51,373 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020007534] [2020-10-19 18:12:51,373 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:12:51,373 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-19 18:12:51,374 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607517179] [2020-10-19 18:12:51,375 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-19 18:12:51,375 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:12:51,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-19 18:12:51,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-19 18:12:51,376 INFO L87 Difference]: Start difference. First operand 158 states and 170 transitions. Second operand 9 states. [2020-10-19 18:12:51,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:12:51,901 INFO L93 Difference]: Finished difference Result 158 states and 170 transitions. [2020-10-19 18:12:51,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-19 18:12:51,902 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 34 [2020-10-19 18:12:51,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:12:51,903 INFO L225 Difference]: With dead ends: 158 [2020-10-19 18:12:51,903 INFO L226 Difference]: Without dead ends: 158 [2020-10-19 18:12:51,904 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-19 18:12:51,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-10-19 18:12:51,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 157. [2020-10-19 18:12:51,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-10-19 18:12:51,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 169 transitions. [2020-10-19 18:12:51,909 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 169 transitions. Word has length 34 [2020-10-19 18:12:51,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:12:51,909 INFO L481 AbstractCegarLoop]: Abstraction has 157 states and 169 transitions. [2020-10-19 18:12:51,910 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-19 18:12:51,910 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 169 transitions. [2020-10-19 18:12:51,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-19 18:12:51,911 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:12:51,911 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:12:51,911 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-19 18:12:51,912 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ASSERT_VIOLATIONMEMORY_FREE, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr69ENSURES_VIOLATIONMEMORY_LEAK, mainErr68ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67ASSERT_VIOLATIONMEMORY_FREE, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr57ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr62ASSERT_VIOLATIONMEMORY_FREE, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr66ASSERT_VIOLATIONMEMORY_FREE, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-10-19 18:12:51,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:12:51,912 INFO L82 PathProgramCache]: Analyzing trace with hash -2066827192, now seen corresponding path program 1 times [2020-10-19 18:12:51,912 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:12:51,913 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334152811] [2020-10-19 18:12:51,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:12:51,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:12:52,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:12:52,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:12:52,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:12:52,078 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334152811] [2020-10-19 18:12:52,078 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:12:52,078 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-19 18:12:52,078 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179854839] [2020-10-19 18:12:52,079 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-19 18:12:52,079 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:12:52,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-19 18:12:52,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-19 18:12:52,080 INFO L87 Difference]: Start difference. First operand 157 states and 169 transitions. Second operand 10 states. [2020-10-19 18:12:52,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:12:52,721 INFO L93 Difference]: Finished difference Result 154 states and 166 transitions. [2020-10-19 18:12:52,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-19 18:12:52,722 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 34 [2020-10-19 18:12:52,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:12:52,723 INFO L225 Difference]: With dead ends: 154 [2020-10-19 18:12:52,723 INFO L226 Difference]: Without dead ends: 154 [2020-10-19 18:12:52,724 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2020-10-19 18:12:52,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-10-19 18:12:52,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 135. [2020-10-19 18:12:52,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-10-19 18:12:52,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 145 transitions. [2020-10-19 18:12:52,728 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 145 transitions. Word has length 34 [2020-10-19 18:12:52,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:12:52,729 INFO L481 AbstractCegarLoop]: Abstraction has 135 states and 145 transitions. [2020-10-19 18:12:52,729 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-19 18:12:52,729 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 145 transitions. [2020-10-19 18:12:52,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-19 18:12:52,729 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:12:52,729 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:12:52,730 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-19 18:12:52,730 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ASSERT_VIOLATIONMEMORY_FREE, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr69ENSURES_VIOLATIONMEMORY_LEAK, mainErr68ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67ASSERT_VIOLATIONMEMORY_FREE, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr57ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr62ASSERT_VIOLATIONMEMORY_FREE, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr66ASSERT_VIOLATIONMEMORY_FREE, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-10-19 18:12:52,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:12:52,730 INFO L82 PathProgramCache]: Analyzing trace with hash -1739691464, now seen corresponding path program 1 times [2020-10-19 18:12:52,730 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:12:52,731 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747553530] [2020-10-19 18:12:52,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:12:52,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:12:52,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:12:52,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:12:52,787 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-19 18:12:52,787 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747553530] [2020-10-19 18:12:52,788 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:12:52,788 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 18:12:52,788 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018180641] [2020-10-19 18:12:52,788 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:12:52,788 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:12:52,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:12:52,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:12:52,789 INFO L87 Difference]: Start difference. First operand 135 states and 145 transitions. Second operand 4 states. [2020-10-19 18:12:52,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:12:52,993 INFO L93 Difference]: Finished difference Result 137 states and 147 transitions. [2020-10-19 18:12:52,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:12:52,993 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 35 [2020-10-19 18:12:52,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:12:52,995 INFO L225 Difference]: With dead ends: 137 [2020-10-19 18:12:52,995 INFO L226 Difference]: Without dead ends: 137 [2020-10-19 18:12:52,995 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:12:52,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2020-10-19 18:12:52,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2020-10-19 18:12:52,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-10-19 18:12:52,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 147 transitions. [2020-10-19 18:12:52,999 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 147 transitions. Word has length 35 [2020-10-19 18:12:53,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:12:53,000 INFO L481 AbstractCegarLoop]: Abstraction has 137 states and 147 transitions. [2020-10-19 18:12:53,000 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:12:53,000 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 147 transitions. [2020-10-19 18:12:53,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-19 18:12:53,001 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:12:53,001 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:12:53,001 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-19 18:12:53,001 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ASSERT_VIOLATIONMEMORY_FREE, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr69ENSURES_VIOLATIONMEMORY_LEAK, mainErr68ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67ASSERT_VIOLATIONMEMORY_FREE, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr57ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr62ASSERT_VIOLATIONMEMORY_FREE, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr66ASSERT_VIOLATIONMEMORY_FREE, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-10-19 18:12:53,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:12:53,002 INFO L82 PathProgramCache]: Analyzing trace with hash 1104380138, now seen corresponding path program 1 times [2020-10-19 18:12:53,002 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:12:53,002 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777438601] [2020-10-19 18:12:53,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:12:53,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:12:53,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:12:53,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:12:53,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:12:53,169 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777438601] [2020-10-19 18:12:53,169 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:12:53,169 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-19 18:12:53,169 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035676874] [2020-10-19 18:12:53,170 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-19 18:12:53,170 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:12:53,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-19 18:12:53,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2020-10-19 18:12:53,170 INFO L87 Difference]: Start difference. First operand 137 states and 147 transitions. Second operand 13 states. [2020-10-19 18:12:53,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:12:53,793 INFO L93 Difference]: Finished difference Result 160 states and 171 transitions. [2020-10-19 18:12:53,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-19 18:12:53,796 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 36 [2020-10-19 18:12:53,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:12:53,797 INFO L225 Difference]: With dead ends: 160 [2020-10-19 18:12:53,797 INFO L226 Difference]: Without dead ends: 160 [2020-10-19 18:12:53,798 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=162, Invalid=390, Unknown=0, NotChecked=0, Total=552 [2020-10-19 18:12:53,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-10-19 18:12:53,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 144. [2020-10-19 18:12:53,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-10-19 18:12:53,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 154 transitions. [2020-10-19 18:12:53,803 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 154 transitions. Word has length 36 [2020-10-19 18:12:53,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:12:53,803 INFO L481 AbstractCegarLoop]: Abstraction has 144 states and 154 transitions. [2020-10-19 18:12:53,803 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-19 18:12:53,803 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 154 transitions. [2020-10-19 18:12:53,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-19 18:12:53,804 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:12:53,804 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:12:53,804 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-19 18:12:53,804 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ASSERT_VIOLATIONMEMORY_FREE, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr69ENSURES_VIOLATIONMEMORY_LEAK, mainErr68ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67ASSERT_VIOLATIONMEMORY_FREE, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr57ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr62ASSERT_VIOLATIONMEMORY_FREE, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr66ASSERT_VIOLATIONMEMORY_FREE, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-10-19 18:12:53,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:12:53,805 INFO L82 PathProgramCache]: Analyzing trace with hash 197711365, now seen corresponding path program 1 times [2020-10-19 18:12:53,805 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:12:53,805 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292791993] [2020-10-19 18:12:53,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:12:53,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:12:53,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:12:53,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:12:53,894 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:12:53,894 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292791993] [2020-10-19 18:12:53,894 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2092822922] [2020-10-19 18:12:53,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:12:54,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:12:54,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 3 conjunts are in the unsatisfiable core [2020-10-19 18:12:54,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:12:54,014 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 [2020-10-19 18:12:54,015 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:12:54,016 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:12:54,017 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:12:54,017 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:9 [2020-10-19 18:12:54,029 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 [2020-10-19 18:12:54,029 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:12:54,032 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:12:54,032 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:12:54,032 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:19, output treesize:3 [2020-10-19 18:12:54,070 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-19 18:12:54,070 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-19 18:12:54,070 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 10 [2020-10-19 18:12:54,071 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371308459] [2020-10-19 18:12:54,072 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:12:54,072 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:12:54,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:12:54,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-19 18:12:54,074 INFO L87 Difference]: Start difference. First operand 144 states and 154 transitions. Second operand 4 states. [2020-10-19 18:12:54,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:12:54,163 INFO L93 Difference]: Finished difference Result 153 states and 163 transitions. [2020-10-19 18:12:54,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:12:54,164 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 37 [2020-10-19 18:12:54,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:12:54,166 INFO L225 Difference]: With dead ends: 153 [2020-10-19 18:12:54,166 INFO L226 Difference]: Without dead ends: 153 [2020-10-19 18:12:54,166 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-10-19 18:12:54,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-10-19 18:12:54,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 147. [2020-10-19 18:12:54,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-10-19 18:12:54,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 157 transitions. [2020-10-19 18:12:54,171 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 157 transitions. Word has length 37 [2020-10-19 18:12:54,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:12:54,172 INFO L481 AbstractCegarLoop]: Abstraction has 147 states and 157 transitions. [2020-10-19 18:12:54,172 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:12:54,172 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 157 transitions. [2020-10-19 18:12:54,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-19 18:12:54,173 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:12:54,173 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:12:54,382 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2020-10-19 18:12:54,383 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ASSERT_VIOLATIONMEMORY_FREE, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr69ENSURES_VIOLATIONMEMORY_LEAK, mainErr68ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67ASSERT_VIOLATIONMEMORY_FREE, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr57ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr62ASSERT_VIOLATIONMEMORY_FREE, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr66ASSERT_VIOLATIONMEMORY_FREE, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-10-19 18:12:54,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:12:54,384 INFO L82 PathProgramCache]: Analyzing trace with hash 222286264, now seen corresponding path program 1 times [2020-10-19 18:12:54,384 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:12:54,385 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992121505] [2020-10-19 18:12:54,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:12:54,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:12:54,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:12:54,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:12:54,473 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-19 18:12:54,473 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992121505] [2020-10-19 18:12:54,474 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [831159602] [2020-10-19 18:12:54,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:12:54,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:12:54,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 19 conjunts are in the unsatisfiable core [2020-10-19 18:12:54,602 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:12:54,612 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 [2020-10-19 18:12:54,612 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:12:54,617 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:12:54,620 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 [2020-10-19 18:12:54,621 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-19 18:12:54,625 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:12:54,626 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:12:54,626 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:23, output treesize:15 [2020-10-19 18:12:54,640 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 21 [2020-10-19 18:12:54,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-19 18:12:54,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-19 18:12:54,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-19 18:12:54,653 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 20 [2020-10-19 18:12:54,654 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-19 18:12:54,661 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:12:54,662 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:12:54,673 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:12:54,677 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 21 [2020-10-19 18:12:54,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-19 18:12:54,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-19 18:12:54,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-19 18:12:54,686 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 20 [2020-10-19 18:12:54,687 INFO L545 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2020-10-19 18:12:54,692 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:12:54,693 INFO L545 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:12:54,702 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:12:54,703 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:12:54,703 INFO L244 ElimStorePlain]: Needed 5 recursive calls to eliminate 2 variables, input treesize:51, output treesize:33 [2020-10-19 18:12:54,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-19 18:12:54,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-19 18:12:54,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-19 18:12:54,740 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2020-10-19 18:12:54,742 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:12:54,756 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:12:54,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-19 18:12:54,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-19 18:12:54,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-19 18:12:54,765 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2020-10-19 18:12:54,767 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-19 18:12:54,778 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:12:54,779 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:12:54,779 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:71, output treesize:33 [2020-10-19 18:12:54,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-19 18:12:54,799 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 10 [2020-10-19 18:12:54,801 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:12:54,811 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:12:54,817 INFO L350 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2020-10-19 18:12:54,817 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 10 [2020-10-19 18:12:54,819 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-19 18:12:54,825 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:12:54,826 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:12:54,826 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:47, output treesize:7 [2020-10-19 18:12:54,841 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-19 18:12:54,842 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 18:12:54,842 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2020-10-19 18:12:54,842 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699893408] [2020-10-19 18:12:54,843 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-19 18:12:54,843 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:12:54,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-19 18:12:54,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-19 18:12:54,844 INFO L87 Difference]: Start difference. First operand 147 states and 157 transitions. Second operand 8 states. [2020-10-19 18:12:55,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:12:55,210 INFO L93 Difference]: Finished difference Result 157 states and 166 transitions. [2020-10-19 18:12:55,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-19 18:12:55,211 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 38 [2020-10-19 18:12:55,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:12:55,212 INFO L225 Difference]: With dead ends: 157 [2020-10-19 18:12:55,212 INFO L226 Difference]: Without dead ends: 157 [2020-10-19 18:12:55,212 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 38 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-19 18:12:55,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-10-19 18:12:55,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 153. [2020-10-19 18:12:55,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-10-19 18:12:55,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 163 transitions. [2020-10-19 18:12:55,217 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 163 transitions. Word has length 38 [2020-10-19 18:12:55,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:12:55,217 INFO L481 AbstractCegarLoop]: Abstraction has 153 states and 163 transitions. [2020-10-19 18:12:55,217 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-19 18:12:55,217 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 163 transitions. [2020-10-19 18:12:55,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-19 18:12:55,218 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:12:55,218 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:12:55,428 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2020-10-19 18:12:55,429 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ASSERT_VIOLATIONMEMORY_FREE, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr69ENSURES_VIOLATIONMEMORY_LEAK, mainErr68ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67ASSERT_VIOLATIONMEMORY_FREE, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr57ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr62ASSERT_VIOLATIONMEMORY_FREE, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr66ASSERT_VIOLATIONMEMORY_FREE, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-10-19 18:12:55,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:12:55,430 INFO L82 PathProgramCache]: Analyzing trace with hash -1699060749, now seen corresponding path program 1 times [2020-10-19 18:12:55,430 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:12:55,430 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683299231] [2020-10-19 18:12:55,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:12:55,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:12:55,451 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:12:55,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:12:55,467 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:12:55,502 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:12:55,502 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-19 18:12:55,502 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-19 18:12:55,529 WARN L417 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2020-10-19 18:12:55,557 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.10 06:12:55 BoogieIcfgContainer [2020-10-19 18:12:55,557 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-19 18:12:55,557 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-19 18:12:55,557 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-19 18:12:55,558 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-19 18:12:55,558 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:12:39" (3/4) ... [2020-10-19 18:12:55,563 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-19 18:12:55,563 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-19 18:12:55,564 INFO L168 Benchmark]: Toolchain (without parser) took 17336.35 ms. Allocated memory was 1.0 GB in the beginning and 1.4 GB in the end (delta: 388.0 MB). Free memory was 951.9 MB in the beginning and 810.3 MB in the end (delta: 141.6 MB). Peak memory consumption was 529.6 MB. Max. memory is 11.5 GB. [2020-10-19 18:12:55,565 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:12:55,565 INFO L168 Benchmark]: CACSL2BoogieTranslator took 732.24 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 125.3 MB). Free memory was 951.9 MB in the beginning and 1.1 GB in the end (delta: -154.3 MB). Peak memory consumption was 20.9 MB. Max. memory is 11.5 GB. [2020-10-19 18:12:55,565 INFO L168 Benchmark]: Boogie Preprocessor took 78.08 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2020-10-19 18:12:55,566 INFO L168 Benchmark]: RCFGBuilder took 918.87 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 71.7 MB). Peak memory consumption was 71.7 MB. Max. memory is 11.5 GB. [2020-10-19 18:12:55,566 INFO L168 Benchmark]: TraceAbstraction took 15591.89 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 262.7 MB). Free memory was 1.0 GB in the beginning and 810.3 MB in the end (delta: 217.5 MB). Peak memory consumption was 480.2 MB. Max. memory is 11.5 GB. [2020-10-19 18:12:55,567 INFO L168 Benchmark]: Witness Printer took 5.48 ms. Allocated memory is still 1.4 GB. Free memory is still 810.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:12:55,569 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 732.24 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 125.3 MB). Free memory was 951.9 MB in the beginning and 1.1 GB in the end (delta: -154.3 MB). Peak memory consumption was 20.9 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 78.08 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 918.87 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 71.7 MB). Peak memory consumption was 71.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 15591.89 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 262.7 MB). Free memory was 1.0 GB in the beginning and 810.3 MB in the end (delta: 217.5 MB). Peak memory consumption was 480.2 MB. Max. memory is 11.5 GB. * Witness Printer took 5.48 ms. Allocated memory is still 1.4 GB. Free memory is still 810.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 996]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 996. Possible FailurePath: [L998] struct TSLL* null = malloc(sizeof(struct TSLL)); VAL [malloc(sizeof(struct TSLL))={-1:0}, null={-1:0}] [L999] null->next = ((void*)0) VAL [malloc(sizeof(struct TSLL))={-1:0}, null={-1:0}] [L1000] null->prev = ((void*)0) VAL [malloc(sizeof(struct TSLL))={-1:0}, null={-1:0}] [L1001] null->colour = BLACK VAL [malloc(sizeof(struct TSLL))={-1:0}, null={-1:0}] [L1003] struct TSLL* list = malloc(sizeof(struct TSLL)); VAL [list={1:0}, malloc(sizeof(struct TSLL))={-1:0}, malloc(sizeof(struct TSLL))={1:0}, null={-1:0}] [L1004] list->next = null VAL [list={1:0}, malloc(sizeof(struct TSLL))={-1:0}, malloc(sizeof(struct TSLL))={1:0}, null={-1:0}] [L1005] list->prev = null VAL [list={1:0}, malloc(sizeof(struct TSLL))={-1:0}, malloc(sizeof(struct TSLL))={1:0}, null={-1:0}] [L1006] list->colour = BLACK VAL [list={1:0}, malloc(sizeof(struct TSLL))={-1:0}, malloc(sizeof(struct TSLL))={1:0}, null={-1:0}] [L1008] struct TSLL* end = list; VAL [end={1:0}, list={1:0}, malloc(sizeof(struct TSLL))={-1:0}, malloc(sizeof(struct TSLL))={1:0}, null={-1:0}] [L1011] COND FALSE !(__VERIFIER_nondet_int()) [L1037] end = null [L1038] end = list VAL [end={1:0}, list={1:0}, malloc(sizeof(struct TSLL))={-1:0}, malloc(sizeof(struct TSLL))={1:0}, null={-1:0}] [L1041] COND FALSE !(!(null != end)) VAL [end={1:0}, list={1:0}, malloc(sizeof(struct TSLL))={-1:0}, malloc(sizeof(struct TSLL))={1:0}, null={-1:0}] [L1042] EXPR end->colour VAL [end={1:0}, end->colour=1, list={1:0}, malloc(sizeof(struct TSLL))={-1:0}, malloc(sizeof(struct TSLL))={1:0}, null={-1:0}] [L1042] COND FALSE !(!(BLACK == end->colour)) [L1043] COND TRUE null != end VAL [end={1:0}, list={1:0}, malloc(sizeof(struct TSLL))={-1:0}, malloc(sizeof(struct TSLL))={1:0}, null={-1:0}] [L1045] EXPR end->colour VAL [end={1:0}, end->colour=1, list={1:0}, malloc(sizeof(struct TSLL))={-1:0}, malloc(sizeof(struct TSLL))={1:0}, null={-1:0}] [L1045] COND FALSE !(RED == end->colour) [L1052] EXPR end->next VAL [end={1:0}, end->next={-1:0}, list={1:0}, malloc(sizeof(struct TSLL))={-1:0}, malloc(sizeof(struct TSLL))={1:0}, null={-1:0}] [L1052] end = end->next [L1043] COND FALSE !(null != end) VAL [end={-1:0}, list={1:0}, malloc(sizeof(struct TSLL))={-1:0}, malloc(sizeof(struct TSLL))={1:0}, null={-1:0}] [L1056] COND TRUE null != list VAL [end={-1:0}, list={1:0}, malloc(sizeof(struct TSLL))={-1:0}, malloc(sizeof(struct TSLL))={1:0}, null={-1:0}] [L1058] EXPR list->colour VAL [end={-1:0}, list={1:0}, list->colour=1, malloc(sizeof(struct TSLL))={-1:0}, malloc(sizeof(struct TSLL))={1:0}, null={-1:0}] [L1058] COND FALSE !(RED == list->colour) [L1067] EXPR list->next VAL [end={-1:0}, list={1:0}, list->next={-1:0}, malloc(sizeof(struct TSLL))={-1:0}, malloc(sizeof(struct TSLL))={1:0}, null={-1:0}] [L1067] end = list->next [L1068] free(list) VAL [end={-1:0}, list={1:0}, malloc(sizeof(struct TSLL))={-1:0}, malloc(sizeof(struct TSLL))={1:0}, null={-1:0}] [L1068] free(list) VAL [end={-1:0}, list={1:0}, malloc(sizeof(struct TSLL))={-1:0}, malloc(sizeof(struct TSLL))={1:0}, null={-1:0}] [L1068] free(list) [L1069] list = end VAL [end={-1:0}, list={-1:0}, malloc(sizeof(struct TSLL))={-1:0}, malloc(sizeof(struct TSLL))={1:0}, null={-1:0}] [L1056] COND FALSE !(null != list) VAL [end={-1:0}, list={-1:0}, malloc(sizeof(struct TSLL))={-1:0}, malloc(sizeof(struct TSLL))={1:0}, null={-1:0}] [L1073] return 0; VAL [\result=0, end={-1:0}, list={-1:0}, malloc(sizeof(struct TSLL))={-1:0}, malloc(sizeof(struct TSLL))={1:0}, null={-1:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 174 locations, 71 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 15.4s, OverallIterations: 25, TraceHistogramMax: 2, AutomataDifference: 10.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2491 SDtfs, 2916 SDslu, 4217 SDs, 0 SdLazy, 9138 SolverSat, 440 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 7.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 344 GetRequests, 156 SyntacticMatches, 9 SemanticMatches, 179 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 2.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=174occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 24 MinimizatonAttempts, 579 StatesRemovedByMinimization, 21 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.7s InterpolantComputationTime, 741 NumberOfCodeBlocks, 741 NumberOfCodeBlocksAsserted, 28 NumberOfCheckSat, 675 ConstructedInterpolants, 0 QuantifiedInterpolants, 142262 SizeOfPredicates, 23 NumberOfNonLiveVariables, 596 ConjunctsInSsa, 41 ConjunctsInUnsatCore, 27 InterpolantComputations, 22 PerfectInterpolantSequences, 8/13 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.25-906a4fb [2020-10-19 18:12:57,523 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-19 18:12:57,526 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-19 18:12:57,571 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-19 18:12:57,571 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-19 18:12:57,581 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-19 18:12:57,584 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-19 18:12:57,588 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-19 18:12:57,591 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-19 18:12:57,595 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-19 18:12:57,596 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-19 18:12:57,598 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-19 18:12:57,598 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-19 18:12:57,602 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-19 18:12:57,603 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-19 18:12:57,605 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-19 18:12:57,607 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-19 18:12:57,608 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-19 18:12:57,611 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-19 18:12:57,619 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-19 18:12:57,622 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-19 18:12:57,623 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-19 18:12:57,625 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-19 18:12:57,626 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-19 18:12:57,640 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-19 18:12:57,640 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-19 18:12:57,641 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-19 18:12:57,647 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-19 18:12:57,647 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-19 18:12:57,648 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-19 18:12:57,649 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-19 18:12:57,653 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-19 18:12:57,654 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-19 18:12:57,654 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-19 18:12:57,657 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-19 18:12:57,658 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-19 18:12:57,658 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-19 18:12:57,659 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-19 18:12:57,659 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-19 18:12:57,660 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-19 18:12:57,663 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-19 18:12:57,664 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2020-10-19 18:12:57,706 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-19 18:12:57,706 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-19 18:12:57,708 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-19 18:12:57,708 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-19 18:12:57,708 INFO L138 SettingsManager]: * Use SBE=true [2020-10-19 18:12:57,709 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-19 18:12:57,709 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-19 18:12:57,709 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-19 18:12:57,709 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-19 18:12:57,709 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-19 18:12:57,711 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-19 18:12:57,711 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-10-19 18:12:57,711 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-10-19 18:12:57,712 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-10-19 18:12:57,712 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-19 18:12:57,712 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-10-19 18:12:57,712 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-19 18:12:57,713 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-19 18:12:57,713 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-19 18:12:57,713 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-19 18:12:57,714 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-19 18:12:57,714 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-19 18:12:57,714 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-19 18:12:57,714 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-19 18:12:57,714 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 18:12:57,715 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-19 18:12:57,715 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-19 18:12:57,715 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-19 18:12:57,715 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-19 18:12:57,715 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-19 18:12:57,716 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-19 18:12:57,716 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 -> 9aa86be9eb0317030839433587db2b1c5b5e93d6 [2020-10-19 18:12:58,079 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-19 18:12:58,100 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-19 18:12:58,105 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-19 18:12:58,106 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-19 18:12:58,107 INFO L275 PluginConnector]: CDTParser initialized [2020-10-19 18:12:58,108 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i [2020-10-19 18:12:58,177 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19681cd4e/dd6e92ecf1724a3f8b25e5817838f3ff/FLAG51eff9763 [2020-10-19 18:12:58,698 INFO L306 CDTParser]: Found 1 translation units. [2020-10-19 18:12:58,699 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-rb-sentinel-1.i [2020-10-19 18:12:58,713 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19681cd4e/dd6e92ecf1724a3f8b25e5817838f3ff/FLAG51eff9763 [2020-10-19 18:12:59,032 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19681cd4e/dd6e92ecf1724a3f8b25e5817838f3ff [2020-10-19 18:12:59,035 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-19 18:12:59,045 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-19 18:12:59,047 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-19 18:12:59,048 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-19 18:12:59,052 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-19 18:12:59,053 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:12:59" (1/1) ... [2020-10-19 18:12:59,058 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a3640a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:12:59, skipping insertion in model container [2020-10-19 18:12:59,065 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:12:59" (1/1) ... [2020-10-19 18:12:59,075 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-19 18:12:59,140 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 18:12:59,692 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:12:59,719 INFO L203 MainTranslator]: Completed pre-run [2020-10-19 18:12:59,811 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:12:59,890 INFO L208 MainTranslator]: Completed translation [2020-10-19 18:12:59,891 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:12:59 WrapperNode [2020-10-19 18:12:59,891 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-19 18:12:59,892 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-19 18:12:59,892 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-19 18:12:59,894 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-19 18:12:59,910 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:12:59" (1/1) ... [2020-10-19 18:12:59,910 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:12:59" (1/1) ... [2020-10-19 18:12:59,959 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:12:59" (1/1) ... [2020-10-19 18:12:59,960 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:12:59" (1/1) ... [2020-10-19 18:13:00,003 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:12:59" (1/1) ... [2020-10-19 18:13:00,011 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:12:59" (1/1) ... [2020-10-19 18:13:00,017 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:12:59" (1/1) ... [2020-10-19 18:13:00,025 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-19 18:13:00,026 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-19 18:13:00,026 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-19 18:13:00,026 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-19 18:13:00,027 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:12:59" (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 [2020-10-19 18:13:00,101 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-19 18:13:00,101 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-19 18:13:00,102 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2020-10-19 18:13:00,102 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-19 18:13:00,102 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-19 18:13:00,102 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-19 18:13:00,103 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-19 18:13:00,103 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-19 18:13:00,103 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-19 18:13:00,103 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-19 18:13:00,104 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-19 18:13:00,104 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-19 18:13:00,104 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-19 18:13:00,105 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-19 18:13:00,105 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-19 18:13:00,105 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-19 18:13:00,105 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-19 18:13:00,106 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-19 18:13:00,106 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-19 18:13:00,106 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-19 18:13:00,106 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-19 18:13:00,107 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-19 18:13:00,107 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-19 18:13:00,107 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-19 18:13:00,107 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-19 18:13:00,108 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-19 18:13:00,108 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-19 18:13:00,108 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-19 18:13:00,108 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-19 18:13:00,109 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-19 18:13:00,109 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-19 18:13:00,109 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-19 18:13:00,109 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-19 18:13:00,109 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-19 18:13:00,110 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-19 18:13:00,110 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-19 18:13:00,110 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-19 18:13:00,110 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-19 18:13:00,110 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-19 18:13:00,111 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-19 18:13:00,111 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-19 18:13:00,111 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-19 18:13:00,111 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-19 18:13:00,112 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-19 18:13:00,112 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-19 18:13:00,112 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-19 18:13:00,112 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-19 18:13:00,112 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-19 18:13:00,113 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-19 18:13:00,113 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-19 18:13:00,113 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-19 18:13:00,113 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-19 18:13:00,114 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-19 18:13:00,114 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-19 18:13:00,114 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-19 18:13:00,114 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-19 18:13:00,114 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-19 18:13:00,115 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-19 18:13:00,115 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-19 18:13:00,115 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-19 18:13:00,115 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-19 18:13:00,116 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-19 18:13:00,116 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-19 18:13:00,116 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-19 18:13:00,116 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-19 18:13:00,116 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-19 18:13:00,117 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-19 18:13:00,117 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-19 18:13:00,117 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-19 18:13:00,117 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-19 18:13:00,117 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-19 18:13:00,118 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-19 18:13:00,118 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-19 18:13:00,118 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-19 18:13:00,118 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-19 18:13:00,119 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-19 18:13:00,119 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-19 18:13:00,119 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-19 18:13:00,119 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-19 18:13:00,119 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-19 18:13:00,120 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-19 18:13:00,120 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-19 18:13:00,120 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-19 18:13:00,120 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-19 18:13:00,120 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-19 18:13:00,121 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-19 18:13:00,121 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-19 18:13:00,121 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-19 18:13:00,121 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-19 18:13:00,121 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-19 18:13:00,122 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-19 18:13:00,122 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-19 18:13:00,122 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-19 18:13:00,122 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-19 18:13:00,122 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-19 18:13:00,123 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-19 18:13:00,123 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-19 18:13:00,123 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-19 18:13:00,123 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-19 18:13:00,123 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-19 18:13:00,124 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-19 18:13:00,124 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-19 18:13:00,124 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-19 18:13:00,124 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-19 18:13:00,124 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-19 18:13:00,125 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-19 18:13:00,125 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-19 18:13:00,125 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-19 18:13:00,125 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-19 18:13:00,125 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-19 18:13:00,126 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-19 18:13:00,126 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-19 18:13:00,126 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-19 18:13:00,126 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-19 18:13:00,126 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-19 18:13:00,127 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-19 18:13:00,127 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-19 18:13:00,127 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-10-19 18:13:00,127 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-19 18:13:00,127 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-10-19 18:13:00,128 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-19 18:13:00,128 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-19 18:13:00,128 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-19 18:13:00,128 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-19 18:13:00,128 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2020-10-19 18:13:00,129 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2020-10-19 18:13:00,129 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2020-10-19 18:13:01,179 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-19 18:13:01,180 INFO L298 CfgBuilder]: Removed 17 assume(true) statements. [2020-10-19 18:13:01,182 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:13:01 BoogieIcfgContainer [2020-10-19 18:13:01,183 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-19 18:13:01,184 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-19 18:13:01,184 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-19 18:13:01,188 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-19 18:13:01,188 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.10 06:12:59" (1/3) ... [2020-10-19 18:13:01,189 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e7efebb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 06:13:01, skipping insertion in model container [2020-10-19 18:13:01,190 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:12:59" (2/3) ... [2020-10-19 18:13:01,190 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e7efebb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 06:13:01, skipping insertion in model container [2020-10-19 18:13:01,190 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:13:01" (3/3) ... [2020-10-19 18:13:01,192 INFO L111 eAbstractionObserver]: Analyzing ICFG dll-rb-sentinel-1.i [2020-10-19 18:13:01,206 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-19 18:13:01,214 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 71 error locations. [2020-10-19 18:13:01,230 INFO L253 AbstractCegarLoop]: Starting to check reachability of 71 error locations. [2020-10-19 18:13:01,253 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-19 18:13:01,254 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-19 18:13:01,254 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-19 18:13:01,254 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-19 18:13:01,254 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-19 18:13:01,255 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-19 18:13:01,255 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-19 18:13:01,255 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-19 18:13:01,281 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states. [2020-10-19 18:13:01,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-19 18:13:01,291 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:13:01,292 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:13:01,293 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ASSERT_VIOLATIONMEMORY_FREE, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr69ENSURES_VIOLATIONMEMORY_LEAK, mainErr68ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67ASSERT_VIOLATIONMEMORY_FREE, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr57ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr62ASSERT_VIOLATIONMEMORY_FREE, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr66ASSERT_VIOLATIONMEMORY_FREE, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-10-19 18:13:01,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:13:01,300 INFO L82 PathProgramCache]: Analyzing trace with hash -2010730465, now seen corresponding path program 1 times [2020-10-19 18:13:01,314 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 18:13:01,315 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2121628325] [2020-10-19 18:13:01,316 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 [2020-10-19 18:13:01,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:13:01,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 3 conjunts are in the unsatisfiable core [2020-10-19 18:13:01,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:13:01,635 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 [2020-10-19 18:13:01,636 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:13:01,646 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:13:01,647 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:13:01,647 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-10-19 18:13:01,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:13:01,662 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 18:13:01,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:13:01,682 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2121628325] [2020-10-19 18:13:01,683 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:13:01,684 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-10-19 18:13:01,685 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123188408] [2020-10-19 18:13:01,690 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 18:13:01,691 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 18:13:01,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 18:13:01,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 18:13:01,711 INFO L87 Difference]: Start difference. First operand 172 states. Second operand 3 states. [2020-10-19 18:13:02,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:13:02,178 INFO L93 Difference]: Finished difference Result 189 states and 202 transitions. [2020-10-19 18:13:02,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 18:13:02,181 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2020-10-19 18:13:02,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:13:02,194 INFO L225 Difference]: With dead ends: 189 [2020-10-19 18:13:02,195 INFO L226 Difference]: Without dead ends: 185 [2020-10-19 18:13:02,197 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 18:13:02,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-10-19 18:13:02,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 157. [2020-10-19 18:13:02,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-10-19 18:13:02,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 168 transitions. [2020-10-19 18:13:02,255 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 168 transitions. Word has length 7 [2020-10-19 18:13:02,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:13:02,256 INFO L481 AbstractCegarLoop]: Abstraction has 157 states and 168 transitions. [2020-10-19 18:13:02,256 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 18:13:02,256 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 168 transitions. [2020-10-19 18:13:02,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-19 18:13:02,257 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:13:02,257 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:13:02,471 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-19 18:13:02,472 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ASSERT_VIOLATIONMEMORY_FREE, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr69ENSURES_VIOLATIONMEMORY_LEAK, mainErr68ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67ASSERT_VIOLATIONMEMORY_FREE, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr57ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr62ASSERT_VIOLATIONMEMORY_FREE, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr66ASSERT_VIOLATIONMEMORY_FREE, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-10-19 18:13:02,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:13:02,473 INFO L82 PathProgramCache]: Analyzing trace with hash -2010730464, now seen corresponding path program 1 times [2020-10-19 18:13:02,475 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 18:13:02,475 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [144900125] [2020-10-19 18:13:02,475 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 [2020-10-19 18:13:02,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:13:02,591 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-19 18:13:02,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:13:02,605 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 [2020-10-19 18:13:02,605 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:13:02,611 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:13:02,612 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:13:02,612 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-10-19 18:13:02,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:13:02,629 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 18:13:02,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:13:02,690 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [144900125] [2020-10-19 18:13:02,691 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:13:02,691 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2020-10-19 18:13:02,691 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940609766] [2020-10-19 18:13:02,693 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:13:02,693 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 18:13:02,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:13:02,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:13:02,694 INFO L87 Difference]: Start difference. First operand 157 states and 168 transitions. Second operand 4 states. [2020-10-19 18:13:03,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:13:03,142 INFO L93 Difference]: Finished difference Result 154 states and 165 transitions. [2020-10-19 18:13:03,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 18:13:03,143 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-10-19 18:13:03,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:13:03,145 INFO L225 Difference]: With dead ends: 154 [2020-10-19 18:13:03,146 INFO L226 Difference]: Without dead ends: 154 [2020-10-19 18:13:03,147 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:13:03,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-10-19 18:13:03,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2020-10-19 18:13:03,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-10-19 18:13:03,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 165 transitions. [2020-10-19 18:13:03,160 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 165 transitions. Word has length 7 [2020-10-19 18:13:03,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:13:03,161 INFO L481 AbstractCegarLoop]: Abstraction has 154 states and 165 transitions. [2020-10-19 18:13:03,161 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:13:03,161 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 165 transitions. [2020-10-19 18:13:03,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-19 18:13:03,162 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:13:03,162 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:13:03,383 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-19 18:13:03,384 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ASSERT_VIOLATIONMEMORY_FREE, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr69ENSURES_VIOLATIONMEMORY_LEAK, mainErr68ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67ASSERT_VIOLATIONMEMORY_FREE, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr57ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr62ASSERT_VIOLATIONMEMORY_FREE, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr66ASSERT_VIOLATIONMEMORY_FREE, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-10-19 18:13:03,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:13:03,385 INFO L82 PathProgramCache]: Analyzing trace with hash -1224286621, now seen corresponding path program 1 times [2020-10-19 18:13:03,385 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 18:13:03,386 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1207217005] [2020-10-19 18:13:03,386 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 [2020-10-19 18:13:03,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:13:03,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 3 conjunts are in the unsatisfiable core [2020-10-19 18:13:03,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:13:03,517 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 [2020-10-19 18:13:03,518 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:13:03,520 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:13:03,520 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:13:03,520 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-10-19 18:13:03,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:13:03,524 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 18:13:03,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:13:03,533 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1207217005] [2020-10-19 18:13:03,534 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:13:03,534 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-10-19 18:13:03,534 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788638053] [2020-10-19 18:13:03,535 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 18:13:03,535 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 18:13:03,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 18:13:03,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 18:13:03,535 INFO L87 Difference]: Start difference. First operand 154 states and 165 transitions. Second operand 3 states. [2020-10-19 18:13:03,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:13:03,912 INFO L93 Difference]: Finished difference Result 153 states and 164 transitions. [2020-10-19 18:13:03,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 18:13:03,913 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-10-19 18:13:03,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:13:03,916 INFO L225 Difference]: With dead ends: 153 [2020-10-19 18:13:03,917 INFO L226 Difference]: Without dead ends: 153 [2020-10-19 18:13:03,917 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 18:13:03,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-10-19 18:13:03,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 149. [2020-10-19 18:13:03,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-10-19 18:13:03,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 162 transitions. [2020-10-19 18:13:03,930 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 162 transitions. Word has length 11 [2020-10-19 18:13:03,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:13:03,931 INFO L481 AbstractCegarLoop]: Abstraction has 149 states and 162 transitions. [2020-10-19 18:13:03,931 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 18:13:03,931 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 162 transitions. [2020-10-19 18:13:03,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-19 18:13:03,932 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:13:03,932 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:13:04,148 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-10-19 18:13:04,150 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ASSERT_VIOLATIONMEMORY_FREE, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr69ENSURES_VIOLATIONMEMORY_LEAK, mainErr68ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67ASSERT_VIOLATIONMEMORY_FREE, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr57ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr62ASSERT_VIOLATIONMEMORY_FREE, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr66ASSERT_VIOLATIONMEMORY_FREE, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-10-19 18:13:04,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:13:04,151 INFO L82 PathProgramCache]: Analyzing trace with hash -1224286620, now seen corresponding path program 1 times [2020-10-19 18:13:04,152 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 18:13:04,152 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1754799248] [2020-10-19 18:13:04,153 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 [2020-10-19 18:13:04,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:13:04,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-19 18:13:04,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:13:04,318 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 [2020-10-19 18:13:04,318 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:13:04,330 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:13:04,330 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:13:04,331 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-10-19 18:13:04,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:13:04,341 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 18:13:04,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:13:04,408 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1754799248] [2020-10-19 18:13:04,408 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:13:04,408 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2020-10-19 18:13:04,408 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121679314] [2020-10-19 18:13:04,409 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:13:04,409 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 18:13:04,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:13:04,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:13:04,410 INFO L87 Difference]: Start difference. First operand 149 states and 162 transitions. Second operand 4 states. [2020-10-19 18:13:04,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:13:04,923 INFO L93 Difference]: Finished difference Result 166 states and 178 transitions. [2020-10-19 18:13:04,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:13:04,924 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-10-19 18:13:04,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:13:04,926 INFO L225 Difference]: With dead ends: 166 [2020-10-19 18:13:04,926 INFO L226 Difference]: Without dead ends: 166 [2020-10-19 18:13:04,926 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:13:04,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-10-19 18:13:04,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 153. [2020-10-19 18:13:04,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-10-19 18:13:04,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 166 transitions. [2020-10-19 18:13:04,937 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 166 transitions. Word has length 11 [2020-10-19 18:13:04,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:13:04,938 INFO L481 AbstractCegarLoop]: Abstraction has 153 states and 166 transitions. [2020-10-19 18:13:04,938 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:13:04,938 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 166 transitions. [2020-10-19 18:13:04,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-19 18:13:04,939 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:13:04,939 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:13:05,160 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-10-19 18:13:05,161 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ASSERT_VIOLATIONMEMORY_FREE, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr69ENSURES_VIOLATIONMEMORY_LEAK, mainErr68ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67ASSERT_VIOLATIONMEMORY_FREE, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr57ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr62ASSERT_VIOLATIONMEMORY_FREE, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr66ASSERT_VIOLATIONMEMORY_FREE, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-10-19 18:13:05,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:13:05,161 INFO L82 PathProgramCache]: Analyzing trace with hash 981248210, now seen corresponding path program 1 times [2020-10-19 18:13:05,162 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 18:13:05,162 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1836642952] [2020-10-19 18:13:05,162 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 [2020-10-19 18:13:05,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:13:05,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-19 18:13:05,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:13:05,333 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 [2020-10-19 18:13:05,333 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:13:05,335 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:13:05,335 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:13:05,336 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-10-19 18:13:05,380 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:13:05,381 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 30 [2020-10-19 18:13:05,384 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:13:05,402 INFO L625 ElimStorePlain]: treesize reduction 14, result has 44.0 percent of original size [2020-10-19 18:13:05,403 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-19 18:13:05,404 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:14, output treesize:11 [2020-10-19 18:13:05,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:13:05,425 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 18:13:05,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:13:05,453 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1836642952] [2020-10-19 18:13:05,453 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:13:05,453 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-10-19 18:13:05,453 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397785569] [2020-10-19 18:13:05,454 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:13:05,454 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 18:13:05,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:13:05,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:13:05,455 INFO L87 Difference]: Start difference. First operand 153 states and 166 transitions. Second operand 4 states. [2020-10-19 18:13:05,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:13:05,918 INFO L93 Difference]: Finished difference Result 154 states and 168 transitions. [2020-10-19 18:13:05,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-19 18:13:05,919 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-10-19 18:13:05,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:13:05,921 INFO L225 Difference]: With dead ends: 154 [2020-10-19 18:13:05,921 INFO L226 Difference]: Without dead ends: 154 [2020-10-19 18:13:05,922 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 27 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 18:13:05,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-10-19 18:13:05,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 140. [2020-10-19 18:13:05,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-19 18:13:05,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 155 transitions. [2020-10-19 18:13:05,930 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 155 transitions. Word has length 16 [2020-10-19 18:13:05,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:13:05,931 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 155 transitions. [2020-10-19 18:13:05,931 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:13:05,931 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 155 transitions. [2020-10-19 18:13:05,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-19 18:13:05,932 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:13:05,932 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:13:06,145 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-10-19 18:13:06,146 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ASSERT_VIOLATIONMEMORY_FREE, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr69ENSURES_VIOLATIONMEMORY_LEAK, mainErr68ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67ASSERT_VIOLATIONMEMORY_FREE, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr57ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr62ASSERT_VIOLATIONMEMORY_FREE, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr66ASSERT_VIOLATIONMEMORY_FREE, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-10-19 18:13:06,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:13:06,147 INFO L82 PathProgramCache]: Analyzing trace with hash 981248211, now seen corresponding path program 1 times [2020-10-19 18:13:06,148 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 18:13:06,149 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1558819984] [2020-10-19 18:13:06,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2020-10-19 18:13:06,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:13:06,286 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-19 18:13:06,288 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:13:06,302 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 [2020-10-19 18:13:06,302 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:13:06,307 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:13:06,307 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:13:06,307 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-10-19 18:13:06,356 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:13:06,357 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 28 [2020-10-19 18:13:06,358 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:13:06,381 INFO L625 ElimStorePlain]: treesize reduction 14, result has 50.0 percent of original size [2020-10-19 18:13:06,382 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-19 18:13:06,383 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:14 [2020-10-19 18:13:06,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:13:06,397 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 18:13:06,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:13:06,590 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1558819984] [2020-10-19 18:13:06,591 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:13:06,591 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [] total 6 [2020-10-19 18:13:06,591 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958314972] [2020-10-19 18:13:06,591 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-19 18:13:06,591 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 18:13:06,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-19 18:13:06,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-19 18:13:06,592 INFO L87 Difference]: Start difference. First operand 140 states and 155 transitions. Second operand 7 states. [2020-10-19 18:13:07,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:13:07,918 INFO L93 Difference]: Finished difference Result 186 states and 203 transitions. [2020-10-19 18:13:07,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-19 18:13:07,919 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-10-19 18:13:07,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:13:07,920 INFO L225 Difference]: With dead ends: 186 [2020-10-19 18:13:07,921 INFO L226 Difference]: Without dead ends: 186 [2020-10-19 18:13:07,921 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-19 18:13:07,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-10-19 18:13:07,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 139. [2020-10-19 18:13:07,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-10-19 18:13:07,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 155 transitions. [2020-10-19 18:13:07,938 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 155 transitions. Word has length 16 [2020-10-19 18:13:07,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:13:07,938 INFO L481 AbstractCegarLoop]: Abstraction has 139 states and 155 transitions. [2020-10-19 18:13:07,938 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-19 18:13:07,938 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 155 transitions. [2020-10-19 18:13:07,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-19 18:13:07,939 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:13:07,939 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:13:08,162 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-10-19 18:13:08,163 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ASSERT_VIOLATIONMEMORY_FREE, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr69ENSURES_VIOLATIONMEMORY_LEAK, mainErr68ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67ASSERT_VIOLATIONMEMORY_FREE, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr57ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr62ASSERT_VIOLATIONMEMORY_FREE, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr66ASSERT_VIOLATIONMEMORY_FREE, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-10-19 18:13:08,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:13:08,163 INFO L82 PathProgramCache]: Analyzing trace with hash -1913274155, now seen corresponding path program 1 times [2020-10-19 18:13:08,164 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 18:13:08,167 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [766988503] [2020-10-19 18:13:08,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2020-10-19 18:13:08,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:13:08,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-19 18:13:08,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:13:08,311 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 [2020-10-19 18:13:08,311 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:13:08,314 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:13:08,314 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:13:08,315 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-10-19 18:13:08,337 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 [2020-10-19 18:13:08,338 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:13:08,349 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:13:08,350 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:13:08,351 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:19, output treesize:11 [2020-10-19 18:13:08,378 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2020-10-19 18:13:08,379 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:13:08,381 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:13:08,382 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:13:08,382 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:19, output treesize:7 [2020-10-19 18:13:08,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:13:08,393 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 18:13:08,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:13:08,413 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [766988503] [2020-10-19 18:13:08,413 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:13:08,414 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2020-10-19 18:13:08,414 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735169090] [2020-10-19 18:13:08,414 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-19 18:13:08,414 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 18:13:08,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-19 18:13:08,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-19 18:13:08,415 INFO L87 Difference]: Start difference. First operand 139 states and 155 transitions. Second operand 5 states. [2020-10-19 18:13:09,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:13:09,057 INFO L93 Difference]: Finished difference Result 189 states and 214 transitions. [2020-10-19 18:13:09,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-19 18:13:09,057 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-10-19 18:13:09,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:13:09,059 INFO L225 Difference]: With dead ends: 189 [2020-10-19 18:13:09,059 INFO L226 Difference]: Without dead ends: 189 [2020-10-19 18:13:09,059 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-19 18:13:09,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2020-10-19 18:13:09,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 138. [2020-10-19 18:13:09,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-10-19 18:13:09,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 154 transitions. [2020-10-19 18:13:09,068 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 154 transitions. Word has length 18 [2020-10-19 18:13:09,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:13:09,069 INFO L481 AbstractCegarLoop]: Abstraction has 138 states and 154 transitions. [2020-10-19 18:13:09,069 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-19 18:13:09,069 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 154 transitions. [2020-10-19 18:13:09,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-19 18:13:09,069 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:13:09,070 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:13:09,270 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2020-10-19 18:13:09,271 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ASSERT_VIOLATIONMEMORY_FREE, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr69ENSURES_VIOLATIONMEMORY_LEAK, mainErr68ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67ASSERT_VIOLATIONMEMORY_FREE, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr57ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr62ASSERT_VIOLATIONMEMORY_FREE, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr66ASSERT_VIOLATIONMEMORY_FREE, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-10-19 18:13:09,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:13:09,272 INFO L82 PathProgramCache]: Analyzing trace with hash -1913274154, now seen corresponding path program 1 times [2020-10-19 18:13:09,273 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 18:13:09,274 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [362523488] [2020-10-19 18:13:09,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2020-10-19 18:13:09,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:13:09,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-19 18:13:09,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:13:09,441 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 [2020-10-19 18:13:09,442 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:13:09,448 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:13:09,449 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:13:09,449 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-10-19 18:13:09,469 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 [2020-10-19 18:13:09,470 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:13:09,483 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:13:09,490 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 [2020-10-19 18:13:09,491 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-19 18:13:09,500 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:13:09,502 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:13:09,502 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:28, output treesize:17 [2020-10-19 18:13:09,535 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2020-10-19 18:13:09,536 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:13:09,547 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:13:09,550 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2020-10-19 18:13:09,551 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-19 18:13:09,563 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:13:09,564 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:13:09,564 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:33, output treesize:11 [2020-10-19 18:13:09,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:13:09,583 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 18:13:09,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:13:09,757 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [362523488] [2020-10-19 18:13:09,757 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:13:09,757 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2020-10-19 18:13:09,758 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96127044] [2020-10-19 18:13:09,758 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-19 18:13:09,758 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 18:13:09,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-19 18:13:09,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-19 18:13:09,759 INFO L87 Difference]: Start difference. First operand 138 states and 154 transitions. Second operand 8 states. [2020-10-19 18:13:11,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:13:11,385 INFO L93 Difference]: Finished difference Result 212 states and 239 transitions. [2020-10-19 18:13:11,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-19 18:13:11,387 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2020-10-19 18:13:11,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:13:11,389 INFO L225 Difference]: With dead ends: 212 [2020-10-19 18:13:11,389 INFO L226 Difference]: Without dead ends: 212 [2020-10-19 18:13:11,389 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2020-10-19 18:13:11,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2020-10-19 18:13:11,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 137. [2020-10-19 18:13:11,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-10-19 18:13:11,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 153 transitions. [2020-10-19 18:13:11,394 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 153 transitions. Word has length 18 [2020-10-19 18:13:11,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:13:11,394 INFO L481 AbstractCegarLoop]: Abstraction has 137 states and 153 transitions. [2020-10-19 18:13:11,394 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-19 18:13:11,395 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 153 transitions. [2020-10-19 18:13:11,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-19 18:13:11,395 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:13:11,395 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:13:11,604 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2020-10-19 18:13:11,605 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ASSERT_VIOLATIONMEMORY_FREE, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr69ENSURES_VIOLATIONMEMORY_LEAK, mainErr68ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67ASSERT_VIOLATIONMEMORY_FREE, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr57ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr62ASSERT_VIOLATIONMEMORY_FREE, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr66ASSERT_VIOLATIONMEMORY_FREE, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-10-19 18:13:11,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:13:11,606 INFO L82 PathProgramCache]: Analyzing trace with hash -362505277, now seen corresponding path program 1 times [2020-10-19 18:13:11,607 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 18:13:11,607 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [717844609] [2020-10-19 18:13:11,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 10 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with mathsat -unsat_core_generation=3 [2020-10-19 18:13:11,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:13:11,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-19 18:13:11,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:13:11,737 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 [2020-10-19 18:13:11,737 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:13:11,739 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:13:11,740 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:13:11,740 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-10-19 18:13:11,754 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:13:11,755 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 17 [2020-10-19 18:13:11,756 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 18:13:11,764 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [717844609] [2020-10-19 18:13:11,765 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 1) [2020-10-19 18:13:11,765 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2071893364] [2020-10-19 18:13:11,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 11 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-10-19 18:13:11,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:13:11,996 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-19 18:13:11,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:13:12,004 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 [2020-10-19 18:13:12,004 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:13:12,008 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:13:12,008 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:13:12,008 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-10-19 18:13:12,031 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:13:12,031 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 17 [2020-10-19 18:13:12,032 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:13:12,035 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:13:12,035 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:13:12,035 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:4 [2020-10-19 18:13:12,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:13:12,047 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 18:13:12,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:13:12,060 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:13:12,060 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2020-10-19 18:13:12,061 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791276365] [2020-10-19 18:13:12,061 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-19 18:13:12,061 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 18:13:12,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-19 18:13:12,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-19 18:13:12,062 INFO L87 Difference]: Start difference. First operand 137 states and 153 transitions. Second operand 5 states. [2020-10-19 18:13:12,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:13:12,654 INFO L93 Difference]: Finished difference Result 183 states and 197 transitions. [2020-10-19 18:13:12,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-19 18:13:12,655 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-10-19 18:13:12,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:13:12,657 INFO L225 Difference]: With dead ends: 183 [2020-10-19 18:13:12,657 INFO L226 Difference]: Without dead ends: 183 [2020-10-19 18:13:12,658 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-19 18:13:12,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-10-19 18:13:12,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 136. [2020-10-19 18:13:12,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-10-19 18:13:12,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 149 transitions. [2020-10-19 18:13:12,666 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 149 transitions. Word has length 20 [2020-10-19 18:13:12,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:13:12,667 INFO L481 AbstractCegarLoop]: Abstraction has 136 states and 149 transitions. [2020-10-19 18:13:12,667 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-19 18:13:12,667 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 149 transitions. [2020-10-19 18:13:12,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-19 18:13:12,669 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:13:12,669 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:13:13,083 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 mathsat -unsat_core_generation=3,11 cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-10-19 18:13:13,084 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ASSERT_VIOLATIONMEMORY_FREE, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr69ENSURES_VIOLATIONMEMORY_LEAK, mainErr68ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67ASSERT_VIOLATIONMEMORY_FREE, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr57ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr62ASSERT_VIOLATIONMEMORY_FREE, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr66ASSERT_VIOLATIONMEMORY_FREE, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-10-19 18:13:13,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:13:13,085 INFO L82 PathProgramCache]: Analyzing trace with hash 1799374189, now seen corresponding path program 1 times [2020-10-19 18:13:13,086 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 18:13:13,086 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [651045318] [2020-10-19 18:13:13,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 12 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with mathsat -unsat_core_generation=3 [2020-10-19 18:13:13,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:13:13,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-19 18:13:13,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:13:13,219 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 [2020-10-19 18:13:13,219 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:13:13,225 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:13:13,226 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:13:13,226 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:17, output treesize:13 [2020-10-19 18:13:13,259 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2020-10-19 18:13:13,261 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:13:13,265 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:13:13,266 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:13:13,266 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:3 [2020-10-19 18:13:13,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:13:13,273 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 18:13:13,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:13:13,313 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [651045318] [2020-10-19 18:13:13,313 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:13:13,313 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 5] imperfect sequences [] total 8 [2020-10-19 18:13:13,313 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16214799] [2020-10-19 18:13:13,314 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-19 18:13:13,314 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 18:13:13,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-19 18:13:13,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-19 18:13:13,314 INFO L87 Difference]: Start difference. First operand 136 states and 149 transitions. Second operand 8 states. [2020-10-19 18:13:14,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:13:14,103 INFO L93 Difference]: Finished difference Result 190 states and 209 transitions. [2020-10-19 18:13:14,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-19 18:13:14,104 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 23 [2020-10-19 18:13:14,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:13:14,106 INFO L225 Difference]: With dead ends: 190 [2020-10-19 18:13:14,106 INFO L226 Difference]: Without dead ends: 190 [2020-10-19 18:13:14,107 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-19 18:13:14,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-10-19 18:13:14,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 141. [2020-10-19 18:13:14,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-10-19 18:13:14,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 154 transitions. [2020-10-19 18:13:14,114 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 154 transitions. Word has length 23 [2020-10-19 18:13:14,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:13:14,116 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 154 transitions. [2020-10-19 18:13:14,116 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-19 18:13:14,116 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 154 transitions. [2020-10-19 18:13:14,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-19 18:13:14,117 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:13:14,117 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] [2020-10-19 18:13:14,318 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 mathsat -unsat_core_generation=3 [2020-10-19 18:13:14,318 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr56ASSERT_VIOLATIONMEMORY_FREE, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr61ASSERT_VIOLATIONMEMORY_FREE, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr69ENSURES_VIOLATIONMEMORY_LEAK, mainErr68ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67ASSERT_VIOLATIONMEMORY_FREE, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr57ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr62ASSERT_VIOLATIONMEMORY_FREE, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr66ASSERT_VIOLATIONMEMORY_FREE, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-10-19 18:13:14,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:13:14,319 INFO L82 PathProgramCache]: Analyzing trace with hash 685968663, now seen corresponding path program 1 times [2020-10-19 18:13:14,321 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 18:13:14,321 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1999057383] [2020-10-19 18:13:14,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 13 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with mathsat -unsat_core_generation=3 [2020-10-19 18:13:14,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:13:14,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-19 18:13:14,487 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:13:14,492 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 [2020-10-19 18:13:14,492 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:13:14,495 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:13:14,496 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:13:14,496 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-10-19 18:13:14,529 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:13:14,530 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 41 [2020-10-19 18:13:14,533 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-19 18:13:14,535 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 18:13:14,536 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1999057383] [2020-10-19 18:13:14,536 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 1) [2020-10-19 18:13:14,536 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1089999584] [2020-10-19 18:13:14,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 14 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-10-19 18:13:14,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:13:14,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-19 18:13:14,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:13:14,919 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:13:14,919 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 30 [2020-10-19 18:13:14,921 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 18:13:14,921 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 1) [2020-10-19 18:13:14,922 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1792886789] [2020-10-19 18:13:14,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:13:15,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:13:15,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-19 18:13:15,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:13:15,068 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:13:15,069 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 41 [2020-10-19 18:13:15,071 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-19 18:13:15,072 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 18:13:15,073 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 1) [2020-10-19 18:13:15,073 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:13:15,074 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-10-19 18:13:15,074 ERROR L205 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2020-10-19 18:13:15,074 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-19 18:13:15,691 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 mathsat -unsat_core_generation=3,14 cvc4 --incremental --print-success --lang smt --rewrite-divk,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:13:15,706 WARN L238 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-10-19 18:13:15,707 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.10 06:13:15 BoogieIcfgContainer [2020-10-19 18:13:15,707 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-19 18:13:15,707 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-19 18:13:15,707 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-19 18:13:15,708 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-19 18:13:15,708 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:13:01" (3/4) ... [2020-10-19 18:13:15,712 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-19 18:13:15,712 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-19 18:13:15,713 INFO L168 Benchmark]: Toolchain (without parser) took 16677.81 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 300.9 MB). Free memory was 955.9 MB in the beginning and 950.8 MB in the end (delta: 5.2 MB). Peak memory consumption was 306.1 MB. Max. memory is 11.5 GB. [2020-10-19 18:13:15,714 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:13:15,714 INFO L168 Benchmark]: CACSL2BoogieTranslator took 844.57 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 156.8 MB). Free memory was 955.9 MB in the beginning and 1.1 GB in the end (delta: -174.2 MB). Peak memory consumption was 20.7 MB. Max. memory is 11.5 GB. [2020-10-19 18:13:15,715 INFO L168 Benchmark]: Boogie Preprocessor took 133.59 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:13:15,715 INFO L168 Benchmark]: RCFGBuilder took 1156.80 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 80.6 MB). Peak memory consumption was 80.6 MB. Max. memory is 11.5 GB. [2020-10-19 18:13:15,716 INFO L168 Benchmark]: TraceAbstraction took 14523.03 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 144.2 MB). Free memory was 1.0 GB in the beginning and 950.8 MB in the end (delta: 98.8 MB). Peak memory consumption was 243.0 MB. Max. memory is 11.5 GB. [2020-10-19 18:13:15,716 INFO L168 Benchmark]: Witness Printer took 4.88 ms. Allocated memory is still 1.3 GB. Free memory is still 950.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:13:15,719 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 844.57 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 156.8 MB). Free memory was 955.9 MB in the beginning and 1.1 GB in the end (delta: -174.2 MB). Peak memory consumption was 20.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 133.59 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 1156.80 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 80.6 MB). Peak memory consumption was 80.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 14523.03 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 144.2 MB). Free memory was 1.0 GB in the beginning and 950.8 MB in the end (delta: 98.8 MB). Peak memory consumption was 243.0 MB. Max. memory is 11.5 GB. * Witness Printer took 4.88 ms. Allocated memory is still 1.3 GB. Free memory is still 950.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 1017]: 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: [L998] struct TSLL* null = malloc(sizeof(struct TSLL)); [L999] null->next = ((void*)0) [L1000] null->prev = ((void*)0) [L1001] null->colour = BLACK [L1003] struct TSLL* list = malloc(sizeof(struct TSLL)); [L1004] list->next = null [L1005] list->prev = null [L1006] list->colour = BLACK [L1008] struct TSLL* end = list; [L1011] COND TRUE __VERIFIER_nondet_int() [L1014] end->next = malloc(sizeof(struct TSLL)) [L1015] EXPR end->next [L1015] end->next->prev = end [L1016] EXPR end->next [L1016] end = end->next [L1017] end->next = null - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 178 locations, 71 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 14.4s, OverallIterations: 11, TraceHistogramMax: 1, AutomataDifference: 7.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 984 SDtfs, 1890 SDslu, 1255 SDs, 0 SdLazy, 1864 SolverSat, 146 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 307 GetRequests, 257 SyntacticMatches, 5 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=172occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 328 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 147 NumberOfCodeBlocks, 147 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 274 ConstructedInterpolants, 5 QuantifiedInterpolants, 14536 SizeOfPredicates, 47 NumberOfNonLiveVariables, 1038 ConjunctsInSsa, 55 ConjunctsInUnsatCore, 20 InterpolantComputations, 20 PerfectInterpolantSequences, 0/0 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...