./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/list-properties/list-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 9a8b2e8d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/list-properties/list-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 6ba4928d27614bbdf140b58cd6ad1ef338e79461 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/list-properties/list-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 6ba4928d27614bbdf140b58cd6ad1ef338e79461 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample --- Real Ultimate output --- This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 06:07:42,804 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 06:07:42,807 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 06:07:42,834 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 06:07:42,835 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 06:07:42,836 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 06:07:42,838 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 06:07:42,840 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 06:07:42,842 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 06:07:42,843 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 06:07:42,845 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 06:07:42,846 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 06:07:42,847 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 06:07:42,848 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 06:07:42,850 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 06:07:42,851 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 06:07:42,853 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 06:07:42,858 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 06:07:42,860 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 06:07:42,866 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 06:07:42,868 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 06:07:42,869 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 06:07:42,871 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 06:07:42,872 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 06:07:42,883 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 06:07:42,883 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 06:07:42,883 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 06:07:42,885 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 06:07:42,885 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 06:07:42,887 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 06:07:42,887 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 06:07:42,888 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 06:07:42,890 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 06:07:42,891 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 06:07:42,892 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 06:07:42,893 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 06:07:42,894 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 06:07:42,894 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 06:07:42,894 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 06:07:42,895 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 06:07:42,896 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 06:07:42,898 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-10-20 06:07:42,924 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 06:07:42,924 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 06:07:42,926 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 06:07:42,927 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 06:07:42,927 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 06:07:42,927 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 06:07:42,927 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 06:07:42,928 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-20 06:07:42,928 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 06:07:42,928 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 06:07:42,928 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 06:07:42,929 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-10-20 06:07:42,929 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-10-20 06:07:42,929 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-10-20 06:07:42,930 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 06:07:42,930 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-10-20 06:07:42,930 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 06:07:42,931 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 06:07:42,931 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 06:07:42,931 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 06:07:42,932 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 06:07:42,932 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 06:07:42,932 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 06:07:42,933 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 06:07:42,933 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 06:07:42,933 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 06:07:42,933 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 06:07:42,934 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 06:07:42,934 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 -> 6ba4928d27614bbdf140b58cd6ad1ef338e79461 [2020-10-20 06:07:43,182 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 06:07:43,198 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 06:07:43,202 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 06:07:43,204 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 06:07:43,205 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 06:07:43,206 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-properties/list-1.i [2020-10-20 06:07:43,282 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9faff0fe8/e36a8efa37f14136a738031f37e5547b/FLAGa013db4b6 [2020-10-20 06:07:43,969 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 06:07:43,970 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-properties/list-1.i [2020-10-20 06:07:43,984 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9faff0fe8/e36a8efa37f14136a738031f37e5547b/FLAGa013db4b6 [2020-10-20 06:07:44,212 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9faff0fe8/e36a8efa37f14136a738031f37e5547b [2020-10-20 06:07:44,217 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 06:07:44,224 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-20 06:07:44,225 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 06:07:44,226 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 06:07:44,230 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 06:07:44,231 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:07:44" (1/1) ... [2020-10-20 06:07:44,235 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f561371 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:07:44, skipping insertion in model container [2020-10-20 06:07:44,235 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:07:44" (1/1) ... [2020-10-20 06:07:44,244 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 06:07:44,314 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 06:07:44,717 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:07:44,732 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 06:07:44,796 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:07:44,892 INFO L208 MainTranslator]: Completed translation [2020-10-20 06:07:44,893 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:07:44 WrapperNode [2020-10-20 06:07:44,894 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 06:07:44,895 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 06:07:44,895 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 06:07:44,895 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 06:07:44,909 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:07:44" (1/1) ... [2020-10-20 06:07:44,910 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:07:44" (1/1) ... [2020-10-20 06:07:44,929 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:07:44" (1/1) ... [2020-10-20 06:07:44,930 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:07:44" (1/1) ... [2020-10-20 06:07:44,950 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:07:44" (1/1) ... [2020-10-20 06:07:44,957 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:07:44" (1/1) ... [2020-10-20 06:07:44,961 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:07:44" (1/1) ... [2020-10-20 06:07:44,968 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 06:07:44,969 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 06:07:44,970 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 06:07:44,970 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 06:07:44,971 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:07:44" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 06:07:45,054 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-20 06:07:45,054 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 06:07:45,055 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-20 06:07:45,055 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-20 06:07:45,055 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-20 06:07:45,055 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-10-20 06:07:45,056 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-10-20 06:07:45,056 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-10-20 06:07:45,056 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-10-20 06:07:45,056 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-20 06:07:45,057 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-20 06:07:45,057 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-20 06:07:45,058 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-20 06:07:45,058 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-20 06:07:45,058 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-20 06:07:45,058 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 06:07:45,059 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-20 06:07:45,059 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-20 06:07:45,059 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-20 06:07:45,059 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-20 06:07:45,060 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-20 06:07:45,060 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-20 06:07:45,060 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-20 06:07:45,061 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-20 06:07:45,061 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-20 06:07:45,061 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-20 06:07:45,061 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-20 06:07:45,062 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-20 06:07:45,062 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-20 06:07:45,062 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-20 06:07:45,062 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-20 06:07:45,063 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-20 06:07:45,063 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-20 06:07:45,063 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-20 06:07:45,063 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-20 06:07:45,063 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-10-20 06:07:45,064 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-10-20 06:07:45,064 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-10-20 06:07:45,064 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-20 06:07:45,064 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-20 06:07:45,065 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-20 06:07:45,065 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-20 06:07:45,065 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-20 06:07:45,065 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-20 06:07:45,066 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-20 06:07:45,066 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-20 06:07:45,066 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-20 06:07:45,066 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-20 06:07:45,067 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-20 06:07:45,067 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-20 06:07:45,067 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-20 06:07:45,067 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-20 06:07:45,068 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-20 06:07:45,068 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-20 06:07:45,068 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-20 06:07:45,068 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-20 06:07:45,069 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-20 06:07:45,069 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-20 06:07:45,069 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-20 06:07:45,069 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-20 06:07:45,069 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-20 06:07:45,070 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-20 06:07:45,070 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-20 06:07:45,070 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-20 06:07:45,070 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-20 06:07:45,070 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-20 06:07:45,071 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-20 06:07:45,071 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-20 06:07:45,071 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-20 06:07:45,071 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-20 06:07:45,072 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-20 06:07:45,072 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-20 06:07:45,072 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-20 06:07:45,072 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-20 06:07:45,072 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-20 06:07:45,073 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-20 06:07:45,073 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-20 06:07:45,073 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-20 06:07:45,074 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-20 06:07:45,074 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-20 06:07:45,074 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-20 06:07:45,074 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-20 06:07:45,074 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-20 06:07:45,075 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-20 06:07:45,075 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-20 06:07:45,075 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-20 06:07:45,075 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-20 06:07:45,075 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-20 06:07:45,076 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-20 06:07:45,076 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-20 06:07:45,076 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-20 06:07:45,076 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-20 06:07:45,077 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-20 06:07:45,077 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-20 06:07:45,077 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-20 06:07:45,077 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-20 06:07:45,077 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-20 06:07:45,078 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-20 06:07:45,078 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-20 06:07:45,078 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-20 06:07:45,078 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-20 06:07:45,078 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-20 06:07:45,079 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-20 06:07:45,079 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-20 06:07:45,079 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-20 06:07:45,079 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-20 06:07:45,080 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-20 06:07:45,080 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-20 06:07:45,080 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-20 06:07:45,080 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-20 06:07:45,080 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-20 06:07:45,081 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-20 06:07:45,081 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-20 06:07:45,081 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-20 06:07:45,081 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-20 06:07:45,081 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-20 06:07:45,082 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-20 06:07:45,082 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-20 06:07:45,082 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-20 06:07:45,082 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-20 06:07:45,083 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-20 06:07:45,083 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-20 06:07:45,083 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-20 06:07:45,083 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-10-20 06:07:45,083 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-20 06:07:45,084 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-20 06:07:45,084 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-20 06:07:45,084 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-20 06:07:45,084 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-20 06:07:45,084 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-20 06:07:45,085 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-20 06:07:45,085 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 06:07:45,085 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 06:07:45,085 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 06:07:45,436 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-10-20 06:07:45,661 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 06:07:45,661 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-20 06:07:45,663 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:07:45 BoogieIcfgContainer [2020-10-20 06:07:45,663 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 06:07:45,665 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 06:07:45,665 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 06:07:45,668 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 06:07:45,669 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 06:07:44" (1/3) ... [2020-10-20 06:07:45,669 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@712de5cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 06:07:45, skipping insertion in model container [2020-10-20 06:07:45,670 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:07:44" (2/3) ... [2020-10-20 06:07:45,670 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@712de5cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 06:07:45, skipping insertion in model container [2020-10-20 06:07:45,670 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:07:45" (3/3) ... [2020-10-20 06:07:45,672 INFO L111 eAbstractionObserver]: Analyzing ICFG list-1.i [2020-10-20 06:07:45,683 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 06:07:45,690 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 26 error locations. [2020-10-20 06:07:45,700 INFO L253 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2020-10-20 06:07:45,718 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 06:07:45,718 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-20 06:07:45,718 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 06:07:45,719 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 06:07:45,719 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 06:07:45,719 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 06:07:45,719 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 06:07:45,719 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 06:07:45,737 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states. [2020-10-20 06:07:45,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-20 06:07:45,746 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:07:45,747 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:07:45,748 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-10-20 06:07:45,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:07:45,755 INFO L82 PathProgramCache]: Analyzing trace with hash -529419567, now seen corresponding path program 1 times [2020-10-20 06:07:45,765 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:07:45,765 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141936198] [2020-10-20 06:07:45,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:07:45,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:07:46,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:07:46,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:07:46,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:07:46,053 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141936198] [2020-10-20 06:07:46,054 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:07:46,054 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 06:07:46,055 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189656203] [2020-10-20 06:07:46,060 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 06:07:46,061 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:07:46,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 06:07:46,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 06:07:46,085 INFO L87 Difference]: Start difference. First operand 78 states. Second operand 5 states. [2020-10-20 06:07:46,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:07:46,436 INFO L93 Difference]: Finished difference Result 82 states and 90 transitions. [2020-10-20 06:07:46,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 06:07:46,438 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-10-20 06:07:46,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:07:46,447 INFO L225 Difference]: With dead ends: 82 [2020-10-20 06:07:46,448 INFO L226 Difference]: Without dead ends: 74 [2020-10-20 06:07:46,450 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-20 06:07:46,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-20 06:07:46,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 69. [2020-10-20 06:07:46,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-20 06:07:46,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 79 transitions. [2020-10-20 06:07:46,494 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 79 transitions. Word has length 11 [2020-10-20 06:07:46,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:07:46,495 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 79 transitions. [2020-10-20 06:07:46,495 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 06:07:46,495 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 79 transitions. [2020-10-20 06:07:46,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-20 06:07:46,496 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:07:46,496 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:07:46,497 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 06:07:46,497 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-10-20 06:07:46,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:07:46,498 INFO L82 PathProgramCache]: Analyzing trace with hash -529419566, now seen corresponding path program 1 times [2020-10-20 06:07:46,498 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:07:46,498 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117639019] [2020-10-20 06:07:46,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:07:46,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:07:46,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:07:46,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:07:46,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:07:46,616 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117639019] [2020-10-20 06:07:46,616 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:07:46,616 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 06:07:46,617 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073670777] [2020-10-20 06:07:46,618 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 06:07:46,619 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:07:46,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 06:07:46,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 06:07:46,620 INFO L87 Difference]: Start difference. First operand 69 states and 79 transitions. Second operand 5 states. [2020-10-20 06:07:46,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:07:46,843 INFO L93 Difference]: Finished difference Result 93 states and 101 transitions. [2020-10-20 06:07:46,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 06:07:46,844 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-10-20 06:07:46,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:07:46,847 INFO L225 Difference]: With dead ends: 93 [2020-10-20 06:07:46,847 INFO L226 Difference]: Without dead ends: 93 [2020-10-20 06:07:46,848 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-20 06:07:46,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-10-20 06:07:46,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 83. [2020-10-20 06:07:46,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-20 06:07:46,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 91 transitions. [2020-10-20 06:07:46,859 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 91 transitions. Word has length 11 [2020-10-20 06:07:46,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:07:46,860 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 91 transitions. [2020-10-20 06:07:46,860 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 06:07:46,860 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 91 transitions. [2020-10-20 06:07:46,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-20 06:07:46,861 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:07:46,862 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:07:46,862 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 06:07:46,862 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-10-20 06:07:46,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:07:46,863 INFO L82 PathProgramCache]: Analyzing trace with hash 745437086, now seen corresponding path program 1 times [2020-10-20 06:07:46,863 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:07:46,863 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355102555] [2020-10-20 06:07:46,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:07:46,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:07:46,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:07:46,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:07:46,996 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:07:46,996 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355102555] [2020-10-20 06:07:46,997 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:07:46,997 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-20 06:07:46,997 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131670823] [2020-10-20 06:07:46,998 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-20 06:07:46,998 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:07:46,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-20 06:07:46,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-20 06:07:46,999 INFO L87 Difference]: Start difference. First operand 83 states and 91 transitions. Second operand 7 states. [2020-10-20 06:07:47,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:07:47,255 INFO L93 Difference]: Finished difference Result 119 states and 129 transitions. [2020-10-20 06:07:47,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-20 06:07:47,256 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-20 06:07:47,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:07:47,258 INFO L225 Difference]: With dead ends: 119 [2020-10-20 06:07:47,258 INFO L226 Difference]: Without dead ends: 119 [2020-10-20 06:07:47,259 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-20 06:07:47,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-10-20 06:07:47,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 86. [2020-10-20 06:07:47,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-10-20 06:07:47,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 94 transitions. [2020-10-20 06:07:47,268 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 94 transitions. Word has length 19 [2020-10-20 06:07:47,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:07:47,269 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 94 transitions. [2020-10-20 06:07:47,269 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-20 06:07:47,269 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 94 transitions. [2020-10-20 06:07:47,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-20 06:07:47,270 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:07:47,271 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:07:47,271 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-20 06:07:47,271 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-10-20 06:07:47,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:07:47,272 INFO L82 PathProgramCache]: Analyzing trace with hash 2009276100, now seen corresponding path program 1 times [2020-10-20 06:07:47,272 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:07:47,272 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271415341] [2020-10-20 06:07:47,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:07:47,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:07:47,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:07:47,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:07:47,398 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:07:47,398 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271415341] [2020-10-20 06:07:47,399 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:07:47,399 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-20 06:07:47,399 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008228290] [2020-10-20 06:07:47,400 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-20 06:07:47,400 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:07:47,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-20 06:07:47,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-20 06:07:47,401 INFO L87 Difference]: Start difference. First operand 86 states and 94 transitions. Second operand 7 states. [2020-10-20 06:07:47,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:07:47,737 INFO L93 Difference]: Finished difference Result 110 states and 120 transitions. [2020-10-20 06:07:47,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-20 06:07:47,738 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-20 06:07:47,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:07:47,739 INFO L225 Difference]: With dead ends: 110 [2020-10-20 06:07:47,740 INFO L226 Difference]: Without dead ends: 110 [2020-10-20 06:07:47,740 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-20 06:07:47,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-10-20 06:07:47,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 89. [2020-10-20 06:07:47,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-20 06:07:47,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 100 transitions. [2020-10-20 06:07:47,749 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 100 transitions. Word has length 19 [2020-10-20 06:07:47,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:07:47,750 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 100 transitions. [2020-10-20 06:07:47,750 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-20 06:07:47,750 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 100 transitions. [2020-10-20 06:07:47,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-20 06:07:47,751 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:07:47,751 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:07:47,752 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-20 06:07:47,752 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-10-20 06:07:47,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:07:47,753 INFO L82 PathProgramCache]: Analyzing trace with hash 2009276101, now seen corresponding path program 1 times [2020-10-20 06:07:47,753 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:07:47,754 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211016376] [2020-10-20 06:07:47,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:07:47,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:07:47,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:07:47,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:07:47,908 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:07:47,909 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211016376] [2020-10-20 06:07:47,909 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:07:47,909 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-20 06:07:47,909 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397561537] [2020-10-20 06:07:47,910 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-20 06:07:47,910 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:07:47,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-20 06:07:47,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-20 06:07:47,911 INFO L87 Difference]: Start difference. First operand 89 states and 100 transitions. Second operand 7 states. [2020-10-20 06:07:48,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:07:48,498 INFO L93 Difference]: Finished difference Result 111 states and 122 transitions. [2020-10-20 06:07:48,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-20 06:07:48,499 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-20 06:07:48,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:07:48,501 INFO L225 Difference]: With dead ends: 111 [2020-10-20 06:07:48,501 INFO L226 Difference]: Without dead ends: 111 [2020-10-20 06:07:48,501 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-20 06:07:48,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-10-20 06:07:48,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 80. [2020-10-20 06:07:48,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-10-20 06:07:48,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 89 transitions. [2020-10-20 06:07:48,508 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 89 transitions. Word has length 19 [2020-10-20 06:07:48,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:07:48,509 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 89 transitions. [2020-10-20 06:07:48,509 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-20 06:07:48,509 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 89 transitions. [2020-10-20 06:07:48,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-20 06:07:48,510 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:07:48,510 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] [2020-10-20 06:07:48,510 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-20 06:07:48,510 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-10-20 06:07:48,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:07:48,511 INFO L82 PathProgramCache]: Analyzing trace with hash -942076661, now seen corresponding path program 1 times [2020-10-20 06:07:48,511 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:07:48,511 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359910314] [2020-10-20 06:07:48,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:07:48,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:07:48,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:07:48,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:07:48,584 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:07:48,585 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359910314] [2020-10-20 06:07:48,585 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:07:48,585 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-20 06:07:48,585 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275516452] [2020-10-20 06:07:48,586 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-20 06:07:48,586 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:07:48,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-20 06:07:48,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-20 06:07:48,587 INFO L87 Difference]: Start difference. First operand 80 states and 89 transitions. Second operand 7 states. [2020-10-20 06:07:48,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:07:48,821 INFO L93 Difference]: Finished difference Result 107 states and 116 transitions. [2020-10-20 06:07:48,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-20 06:07:48,822 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2020-10-20 06:07:48,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:07:48,823 INFO L225 Difference]: With dead ends: 107 [2020-10-20 06:07:48,823 INFO L226 Difference]: Without dead ends: 107 [2020-10-20 06:07:48,823 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-20 06:07:48,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-10-20 06:07:48,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 82. [2020-10-20 06:07:48,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-20 06:07:48,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 91 transitions. [2020-10-20 06:07:48,830 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 91 transitions. Word has length 21 [2020-10-20 06:07:48,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:07:48,831 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 91 transitions. [2020-10-20 06:07:48,831 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-20 06:07:48,831 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 91 transitions. [2020-10-20 06:07:48,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-20 06:07:48,832 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:07:48,832 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] [2020-10-20 06:07:48,832 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-20 06:07:48,832 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-10-20 06:07:48,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:07:48,833 INFO L82 PathProgramCache]: Analyzing trace with hash -1237890890, now seen corresponding path program 1 times [2020-10-20 06:07:48,833 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:07:48,833 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270804734] [2020-10-20 06:07:48,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:07:48,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:07:48,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:07:48,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:07:48,906 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:07:48,907 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270804734] [2020-10-20 06:07:48,907 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:07:48,907 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-20 06:07:48,907 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760715077] [2020-10-20 06:07:48,908 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-20 06:07:48,908 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:07:48,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-20 06:07:48,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-20 06:07:48,909 INFO L87 Difference]: Start difference. First operand 82 states and 91 transitions. Second operand 7 states. [2020-10-20 06:07:49,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:07:49,169 INFO L93 Difference]: Finished difference Result 91 states and 99 transitions. [2020-10-20 06:07:49,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-20 06:07:49,170 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2020-10-20 06:07:49,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:07:49,171 INFO L225 Difference]: With dead ends: 91 [2020-10-20 06:07:49,171 INFO L226 Difference]: Without dead ends: 91 [2020-10-20 06:07:49,172 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-20 06:07:49,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-10-20 06:07:49,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 80. [2020-10-20 06:07:49,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-10-20 06:07:49,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 89 transitions. [2020-10-20 06:07:49,184 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 89 transitions. Word has length 21 [2020-10-20 06:07:49,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:07:49,185 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 89 transitions. [2020-10-20 06:07:49,185 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-20 06:07:49,185 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 89 transitions. [2020-10-20 06:07:49,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-20 06:07:49,186 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:07:49,186 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] [2020-10-20 06:07:49,187 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-20 06:07:49,187 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-10-20 06:07:49,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:07:49,188 INFO L82 PathProgramCache]: Analyzing trace with hash -1237890889, now seen corresponding path program 1 times [2020-10-20 06:07:49,188 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:07:49,188 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254511379] [2020-10-20 06:07:49,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:07:49,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:07:49,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:07:49,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:07:49,276 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:07:49,277 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254511379] [2020-10-20 06:07:49,277 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:07:49,277 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-20 06:07:49,277 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313141053] [2020-10-20 06:07:49,278 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-20 06:07:49,278 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:07:49,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-20 06:07:49,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-20 06:07:49,279 INFO L87 Difference]: Start difference. First operand 80 states and 89 transitions. Second operand 7 states. [2020-10-20 06:07:49,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:07:49,593 INFO L93 Difference]: Finished difference Result 88 states and 97 transitions. [2020-10-20 06:07:49,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-20 06:07:49,594 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2020-10-20 06:07:49,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:07:49,595 INFO L225 Difference]: With dead ends: 88 [2020-10-20 06:07:49,595 INFO L226 Difference]: Without dead ends: 88 [2020-10-20 06:07:49,595 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-20 06:07:49,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-10-20 06:07:49,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 68. [2020-10-20 06:07:49,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-20 06:07:49,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 76 transitions. [2020-10-20 06:07:49,600 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 76 transitions. Word has length 21 [2020-10-20 06:07:49,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:07:49,601 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 76 transitions. [2020-10-20 06:07:49,601 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-20 06:07:49,601 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 76 transitions. [2020-10-20 06:07:49,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-20 06:07:49,602 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:07:49,602 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] [2020-10-20 06:07:49,602 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-20 06:07:49,602 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-10-20 06:07:49,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:07:49,603 INFO L82 PathProgramCache]: Analyzing trace with hash 851943190, now seen corresponding path program 1 times [2020-10-20 06:07:49,603 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:07:49,603 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288194273] [2020-10-20 06:07:49,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:07:49,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:07:49,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:07:49,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:07:49,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:07:49,700 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288194273] [2020-10-20 06:07:49,701 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:07:49,702 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-20 06:07:49,702 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429259157] [2020-10-20 06:07:49,703 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-20 06:07:49,703 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:07:49,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-20 06:07:49,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-20 06:07:49,704 INFO L87 Difference]: Start difference. First operand 68 states and 76 transitions. Second operand 7 states. [2020-10-20 06:07:49,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:07:49,919 INFO L93 Difference]: Finished difference Result 92 states and 99 transitions. [2020-10-20 06:07:49,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-20 06:07:49,919 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-10-20 06:07:49,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:07:49,921 INFO L225 Difference]: With dead ends: 92 [2020-10-20 06:07:49,921 INFO L226 Difference]: Without dead ends: 92 [2020-10-20 06:07:49,922 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-20 06:07:49,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-10-20 06:07:49,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 70. [2020-10-20 06:07:49,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-10-20 06:07:49,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 78 transitions. [2020-10-20 06:07:49,927 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 78 transitions. Word has length 23 [2020-10-20 06:07:49,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:07:49,927 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 78 transitions. [2020-10-20 06:07:49,927 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-20 06:07:49,927 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 78 transitions. [2020-10-20 06:07:49,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-20 06:07:49,928 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:07:49,928 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:07:49,929 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-20 06:07:49,929 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-10-20 06:07:49,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:07:49,929 INFO L82 PathProgramCache]: Analyzing trace with hash 858770483, now seen corresponding path program 1 times [2020-10-20 06:07:49,930 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:07:49,930 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724647095] [2020-10-20 06:07:49,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:07:49,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:07:49,948 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:07:49,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:07:49,958 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:07:49,987 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:07:49,987 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 06:07:49,987 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-20 06:07:50,003 WARN L417 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2020-10-20 06:07:50,019 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 06:07:50 BoogieIcfgContainer [2020-10-20 06:07:50,019 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 06:07:50,020 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 06:07:50,020 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 06:07:50,020 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 06:07:50,021 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:07:45" (3/4) ... [2020-10-20 06:07:50,024 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-20 06:07:50,025 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 06:07:50,027 INFO L168 Benchmark]: Toolchain (without parser) took 5807.93 ms. Allocated memory was 37.2 MB in the beginning and 87.0 MB in the end (delta: 49.8 MB). Free memory was 17.8 MB in the beginning and 61.2 MB in the end (delta: -43.3 MB). Peak memory consumption was 6.5 MB. Max. memory is 14.3 GB. [2020-10-20 06:07:50,028 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 34.6 MB. Free memory was 11.4 MB in the beginning and 11.4 MB in the end (delta: 45.6 kB). Peak memory consumption was 45.6 kB. Max. memory is 14.3 GB. [2020-10-20 06:07:50,029 INFO L168 Benchmark]: CACSL2BoogieTranslator took 668.86 ms. Allocated memory was 37.2 MB in the beginning and 46.7 MB in the end (delta: 9.4 MB). Free memory was 17.0 MB in the beginning and 28.0 MB in the end (delta: -11.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 14.3 GB. [2020-10-20 06:07:50,030 INFO L168 Benchmark]: Boogie Preprocessor took 74.17 ms. Allocated memory is still 46.7 MB. Free memory was 28.0 MB in the beginning and 24.9 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 14.3 GB. [2020-10-20 06:07:50,031 INFO L168 Benchmark]: RCFGBuilder took 694.40 ms. Allocated memory was 46.7 MB in the beginning and 49.8 MB in the end (delta: 3.1 MB). Free memory was 24.9 MB in the beginning and 27.5 MB in the end (delta: -2.6 MB). Peak memory consumption was 18.3 MB. Max. memory is 14.3 GB. [2020-10-20 06:07:50,032 INFO L168 Benchmark]: TraceAbstraction took 4354.58 ms. Allocated memory was 49.8 MB in the beginning and 87.0 MB in the end (delta: 37.2 MB). Free memory was 27.2 MB in the beginning and 62.2 MB in the end (delta: -35.0 MB). Peak memory consumption was 2.2 MB. Max. memory is 14.3 GB. [2020-10-20 06:07:50,032 INFO L168 Benchmark]: Witness Printer took 4.91 ms. Allocated memory is still 87.0 MB. Free memory was 62.2 MB in the beginning and 61.2 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 14.3 GB. [2020-10-20 06:07:50,037 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 34.6 MB. Free memory was 11.4 MB in the beginning and 11.4 MB in the end (delta: 45.6 kB). Peak memory consumption was 45.6 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 668.86 ms. Allocated memory was 37.2 MB in the beginning and 46.7 MB in the end (delta: 9.4 MB). Free memory was 17.0 MB in the beginning and 28.0 MB in the end (delta: -11.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 74.17 ms. Allocated memory is still 46.7 MB. Free memory was 28.0 MB in the beginning and 24.9 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 14.3 GB. * RCFGBuilder took 694.40 ms. Allocated memory was 46.7 MB in the beginning and 49.8 MB in the end (delta: 3.1 MB). Free memory was 24.9 MB in the beginning and 27.5 MB in the end (delta: -2.6 MB). Peak memory consumption was 18.3 MB. Max. memory is 14.3 GB. * TraceAbstraction took 4354.58 ms. Allocated memory was 49.8 MB in the beginning and 87.0 MB in the end (delta: 37.2 MB). Free memory was 27.2 MB in the beginning and 62.2 MB in the end (delta: -35.0 MB). Peak memory consumption was 2.2 MB. Max. memory is 14.3 GB. * Witness Printer took 4.91 ms. Allocated memory is still 87.0 MB. Free memory was 62.2 MB in the beginning and 61.2 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 531]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 531. Possible FailurePath: [L532] List a = (List) malloc(sizeof(struct node)); VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}] [L533] COND FALSE !(a == 0) VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}] [L534] List t; [L535] List p = a; VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}, p={-1:0}] [L536] COND FALSE !(__VERIFIER_nondet_int()) [L543] COND FALSE !(__VERIFIER_nondet_int()) [L550] p->h = 3 VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}, p={-1:0}] [L551] p = a VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}, p={-1:0}] [L552] EXPR p->h VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}, p={-1:0}, p->h=3] [L552] COND FALSE !(p->h == 1) [L554] EXPR p->h VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}, p={-1:0}, p->h=3] [L554] COND FALSE !(p->h == 2) [L556] EXPR p->h VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}, p={-1:0}, p->h=3] [L556] COND FALSE !(p->h != 3) [L558] return 0; VAL [\result=0, a={-1:0}, malloc(sizeof(struct node))={-1:0}, p={-1:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 94 locations, 26 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 4.2s, OverallIterations: 10, TraceHistogramMax: 2, AutomataDifference: 2.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 409 SDtfs, 677 SDslu, 911 SDs, 0 SdLazy, 1850 SolverSat, 135 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 90 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=89occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 9 MinimizatonAttempts, 178 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 187 NumberOfCodeBlocks, 187 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 156 ConstructedInterpolants, 0 QuantifiedInterpolants, 14484 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 12/12 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 06:07:52,397 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 06:07:52,400 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 06:07:52,447 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 06:07:52,448 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 06:07:52,472 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 06:07:52,474 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 06:07:52,477 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 06:07:52,481 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 06:07:52,485 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 06:07:52,486 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 06:07:52,487 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 06:07:52,488 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 06:07:52,492 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 06:07:52,494 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 06:07:52,496 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 06:07:52,498 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 06:07:52,499 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 06:07:52,503 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 06:07:52,509 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 06:07:52,511 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 06:07:52,512 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 06:07:52,514 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 06:07:52,515 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 06:07:52,520 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 06:07:52,520 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 06:07:52,520 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 06:07:52,524 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 06:07:52,525 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 06:07:52,526 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 06:07:52,526 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 06:07:52,527 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 06:07:52,527 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 06:07:52,528 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 06:07:52,529 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 06:07:52,530 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 06:07:52,530 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 06:07:52,531 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 06:07:52,531 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 06:07:52,532 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 06:07:52,533 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 06:07:52,534 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2020-10-20 06:07:52,579 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 06:07:52,579 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 06:07:52,581 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 06:07:52,582 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 06:07:52,582 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 06:07:52,582 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 06:07:52,582 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 06:07:52,582 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-20 06:07:52,583 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 06:07:52,583 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 06:07:52,584 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 06:07:52,584 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-10-20 06:07:52,584 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-10-20 06:07:52,584 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-10-20 06:07:52,585 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 06:07:52,585 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-10-20 06:07:52,585 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-20 06:07:52,585 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-20 06:07:52,585 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 06:07:52,586 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 06:07:52,586 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 06:07:52,586 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 06:07:52,586 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 06:07:52,586 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 06:07:52,587 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 06:07:52,587 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 06:07:52,587 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 06:07:52,587 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-20 06:07:52,587 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-20 06:07:52,588 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 06:07:52,588 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-20 06:07:52,588 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 -> 6ba4928d27614bbdf140b58cd6ad1ef338e79461 [2020-10-20 06:07:52,834 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 06:07:52,849 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 06:07:52,856 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 06:07:52,858 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 06:07:52,859 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 06:07:52,860 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-properties/list-1.i [2020-10-20 06:07:52,927 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/62c95ed12/d0cbd755bc914ae988c252e1aadd6e03/FLAG1fa89f956 [2020-10-20 06:07:53,455 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 06:07:53,456 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-properties/list-1.i [2020-10-20 06:07:53,483 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/62c95ed12/d0cbd755bc914ae988c252e1aadd6e03/FLAG1fa89f956 [2020-10-20 06:07:53,761 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/62c95ed12/d0cbd755bc914ae988c252e1aadd6e03 [2020-10-20 06:07:53,765 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 06:07:53,772 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-20 06:07:53,773 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 06:07:53,774 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 06:07:53,777 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 06:07:53,778 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:07:53" (1/1) ... [2020-10-20 06:07:53,781 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@757bc46c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:07:53, skipping insertion in model container [2020-10-20 06:07:53,781 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:07:53" (1/1) ... [2020-10-20 06:07:53,789 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 06:07:53,842 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 06:07:54,280 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:07:54,306 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 06:07:54,396 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:07:54,465 INFO L208 MainTranslator]: Completed translation [2020-10-20 06:07:54,466 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:07:54 WrapperNode [2020-10-20 06:07:54,466 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 06:07:54,467 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 06:07:54,467 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 06:07:54,468 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 06:07:54,482 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:07:54" (1/1) ... [2020-10-20 06:07:54,483 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:07:54" (1/1) ... [2020-10-20 06:07:54,502 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:07:54" (1/1) ... [2020-10-20 06:07:54,503 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:07:54" (1/1) ... [2020-10-20 06:07:54,525 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:07:54" (1/1) ... [2020-10-20 06:07:54,531 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:07:54" (1/1) ... [2020-10-20 06:07:54,536 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:07:54" (1/1) ... [2020-10-20 06:07:54,543 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 06:07:54,544 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 06:07:54,544 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 06:07:54,545 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 06:07:54,545 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:07:54" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 06:07:54,612 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-20 06:07:54,613 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 06:07:54,613 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2020-10-20 06:07:54,614 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-20 06:07:54,614 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-20 06:07:54,614 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-20 06:07:54,614 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-10-20 06:07:54,615 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-10-20 06:07:54,615 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-10-20 06:07:54,615 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-10-20 06:07:54,615 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-20 06:07:54,616 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-20 06:07:54,616 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-20 06:07:54,616 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-20 06:07:54,616 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-20 06:07:54,617 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-20 06:07:54,617 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 06:07:54,617 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-20 06:07:54,617 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-20 06:07:54,618 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-20 06:07:54,618 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-20 06:07:54,618 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-20 06:07:54,619 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-20 06:07:54,619 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-20 06:07:54,619 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-20 06:07:54,619 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-20 06:07:54,619 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-20 06:07:54,620 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-20 06:07:54,620 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-20 06:07:54,620 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-20 06:07:54,620 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-20 06:07:54,621 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-20 06:07:54,621 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-20 06:07:54,621 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-20 06:07:54,621 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-20 06:07:54,621 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-20 06:07:54,622 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-10-20 06:07:54,622 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-10-20 06:07:54,622 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-10-20 06:07:54,622 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-20 06:07:54,622 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-20 06:07:54,623 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-20 06:07:54,623 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-20 06:07:54,623 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-20 06:07:54,623 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-20 06:07:54,623 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-20 06:07:54,624 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-20 06:07:54,624 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-20 06:07:54,624 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-20 06:07:54,624 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-20 06:07:54,625 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-20 06:07:54,625 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-20 06:07:54,625 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-20 06:07:54,625 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-20 06:07:54,625 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-20 06:07:54,626 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-20 06:07:54,626 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-20 06:07:54,626 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-20 06:07:54,626 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-20 06:07:54,626 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-20 06:07:54,627 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-20 06:07:54,627 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-20 06:07:54,627 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-20 06:07:54,627 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-20 06:07:54,627 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-20 06:07:54,628 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-20 06:07:54,628 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-20 06:07:54,628 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-20 06:07:54,628 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-20 06:07:54,629 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-20 06:07:54,629 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-20 06:07:54,629 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-20 06:07:54,629 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-20 06:07:54,629 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-20 06:07:54,630 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-20 06:07:54,630 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-20 06:07:54,630 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-20 06:07:54,630 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-20 06:07:54,630 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-20 06:07:54,631 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-20 06:07:54,631 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-20 06:07:54,631 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-20 06:07:54,631 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-20 06:07:54,632 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-20 06:07:54,639 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-20 06:07:54,639 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-20 06:07:54,639 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-20 06:07:54,639 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-20 06:07:54,640 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-20 06:07:54,640 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-20 06:07:54,640 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-20 06:07:54,640 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-20 06:07:54,640 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-20 06:07:54,641 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-20 06:07:54,641 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-20 06:07:54,641 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-20 06:07:54,641 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-20 06:07:54,641 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-20 06:07:54,642 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-20 06:07:54,642 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-20 06:07:54,642 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-20 06:07:54,642 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-20 06:07:54,642 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-20 06:07:54,643 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-20 06:07:54,643 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-20 06:07:54,643 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-20 06:07:54,643 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-20 06:07:54,643 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-20 06:07:54,644 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-20 06:07:54,644 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-20 06:07:54,644 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-20 06:07:54,644 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-20 06:07:54,644 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-20 06:07:54,645 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-20 06:07:54,645 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-20 06:07:54,645 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-20 06:07:54,645 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-20 06:07:54,645 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-20 06:07:54,646 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-20 06:07:54,646 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-20 06:07:54,646 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-20 06:07:54,646 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-20 06:07:54,646 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-20 06:07:54,647 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-20 06:07:54,647 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-10-20 06:07:54,647 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-20 06:07:54,647 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-20 06:07:54,647 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-10-20 06:07:54,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-20 06:07:54,648 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-20 06:07:54,648 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-10-20 06:07:54,648 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-20 06:07:54,649 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-20 06:07:54,649 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 06:07:54,649 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2020-10-20 06:07:54,649 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2020-10-20 06:07:54,649 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2020-10-20 06:07:54,650 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 06:07:55,026 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-10-20 06:07:55,384 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 06:07:55,385 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-20 06:07:55,387 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:07:55 BoogieIcfgContainer [2020-10-20 06:07:55,387 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 06:07:55,388 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 06:07:55,389 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 06:07:55,393 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 06:07:55,393 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 06:07:53" (1/3) ... [2020-10-20 06:07:55,394 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a6d766b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 06:07:55, skipping insertion in model container [2020-10-20 06:07:55,394 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:07:54" (2/3) ... [2020-10-20 06:07:55,394 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a6d766b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 06:07:55, skipping insertion in model container [2020-10-20 06:07:55,394 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:07:55" (3/3) ... [2020-10-20 06:07:55,396 INFO L111 eAbstractionObserver]: Analyzing ICFG list-1.i [2020-10-20 06:07:55,409 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 06:07:55,418 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 26 error locations. [2020-10-20 06:07:55,432 INFO L253 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2020-10-20 06:07:55,453 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 06:07:55,453 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-20 06:07:55,453 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 06:07:55,453 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 06:07:55,453 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 06:07:55,453 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 06:07:55,454 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 06:07:55,454 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 06:07:55,471 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states. [2020-10-20 06:07:55,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-20 06:07:55,494 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:07:55,495 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:07:55,496 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-10-20 06:07:55,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:07:55,502 INFO L82 PathProgramCache]: Analyzing trace with hash 1059061945, now seen corresponding path program 1 times [2020-10-20 06:07:55,516 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 06:07:55,516 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [203780707] [2020-10-20 06:07:55,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-10-20 06:07:55,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:07:55,698 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-20 06:07:55,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:07:55,788 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-20 06:07:55,789 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:07:55,803 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:07:55,804 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:07:55,804 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-10-20 06:07:55,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:07:55,832 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 06:07:55,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:07:55,935 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [203780707] [2020-10-20 06:07:55,936 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:07:55,936 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-10-20 06:07:55,937 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952741474] [2020-10-20 06:07:55,942 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 06:07:55,943 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 06:07:55,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 06:07:55,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-20 06:07:55,960 INFO L87 Difference]: Start difference. First operand 76 states. Second operand 6 states. [2020-10-20 06:07:56,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:07:56,717 INFO L93 Difference]: Finished difference Result 119 states and 132 transitions. [2020-10-20 06:07:56,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 06:07:56,720 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-10-20 06:07:56,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:07:56,731 INFO L225 Difference]: With dead ends: 119 [2020-10-20 06:07:56,731 INFO L226 Difference]: Without dead ends: 108 [2020-10-20 06:07:56,733 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-20 06:07:56,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-10-20 06:07:56,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 84. [2020-10-20 06:07:56,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-10-20 06:07:56,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 103 transitions. [2020-10-20 06:07:56,780 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 103 transitions. Word has length 10 [2020-10-20 06:07:56,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:07:56,780 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 103 transitions. [2020-10-20 06:07:56,780 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 06:07:56,781 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 103 transitions. [2020-10-20 06:07:56,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-20 06:07:56,784 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:07:56,784 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:07:56,997 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-20 06:07:56,998 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-10-20 06:07:56,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:07:56,999 INFO L82 PathProgramCache]: Analyzing trace with hash 1059061944, now seen corresponding path program 1 times [2020-10-20 06:07:57,000 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 06:07:57,000 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1048966886] [2020-10-20 06:07:57,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-10-20 06:07:57,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:07:57,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 06:07:57,140 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:07:57,165 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-20 06:07:57,165 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:07:57,169 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:07:57,169 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:07:57,170 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-10-20 06:07:57,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:07:57,184 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 06:07:57,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:07:57,204 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1048966886] [2020-10-20 06:07:57,204 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:07:57,204 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-10-20 06:07:57,205 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173537437] [2020-10-20 06:07:57,208 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 06:07:57,208 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 06:07:57,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 06:07:57,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 06:07:57,209 INFO L87 Difference]: Start difference. First operand 84 states and 103 transitions. Second operand 4 states. [2020-10-20 06:07:57,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:07:57,464 INFO L93 Difference]: Finished difference Result 77 states and 84 transitions. [2020-10-20 06:07:57,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 06:07:57,465 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-10-20 06:07:57,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:07:57,467 INFO L225 Difference]: With dead ends: 77 [2020-10-20 06:07:57,467 INFO L226 Difference]: Without dead ends: 77 [2020-10-20 06:07:57,468 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-20 06:07:57,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-10-20 06:07:57,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2020-10-20 06:07:57,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-20 06:07:57,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 84 transitions. [2020-10-20 06:07:57,478 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 84 transitions. Word has length 10 [2020-10-20 06:07:57,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:07:57,478 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 84 transitions. [2020-10-20 06:07:57,478 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 06:07:57,478 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 84 transitions. [2020-10-20 06:07:57,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-20 06:07:57,479 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:07:57,480 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:07:57,691 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-20 06:07:57,692 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-10-20 06:07:57,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:07:57,693 INFO L82 PathProgramCache]: Analyzing trace with hash 318419033, now seen corresponding path program 1 times [2020-10-20 06:07:57,694 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 06:07:57,694 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [614897792] [2020-10-20 06:07:57,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-10-20 06:07:57,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:07:57,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-20 06:07:57,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:07:57,834 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-10-20 06:07:57,834 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:07:57,842 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:07:57,842 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:07:57,843 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:7 [2020-10-20 06:07:57,892 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2020-10-20 06:07:57,893 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:07:57,902 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:07:57,903 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:07:57,903 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:17, output treesize:5 [2020-10-20 06:07:57,917 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:07:57,917 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 06:07:57,967 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 16 treesize of output 12 [2020-10-20 06:07:57,968 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-10-20 06:07:57,974 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:07:57,974 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2020-10-20 06:07:57,974 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:16, output treesize:7 [2020-10-20 06:07:57,980 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:07:57,981 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [614897792] [2020-10-20 06:07:57,981 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:07:57,981 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9 [2020-10-20 06:07:57,981 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566532416] [2020-10-20 06:07:57,982 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-20 06:07:57,982 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 06:07:57,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-20 06:07:57,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-20 06:07:57,983 INFO L87 Difference]: Start difference. First operand 77 states and 84 transitions. Second operand 9 states. [2020-10-20 06:07:58,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:07:58,679 INFO L93 Difference]: Finished difference Result 150 states and 162 transitions. [2020-10-20 06:07:58,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-20 06:07:58,681 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 17 [2020-10-20 06:07:58,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:07:58,683 INFO L225 Difference]: With dead ends: 150 [2020-10-20 06:07:58,683 INFO L226 Difference]: Without dead ends: 150 [2020-10-20 06:07:58,683 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2020-10-20 06:07:58,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-10-20 06:07:58,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 83. [2020-10-20 06:07:58,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-20 06:07:58,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 93 transitions. [2020-10-20 06:07:58,693 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 93 transitions. Word has length 17 [2020-10-20 06:07:58,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:07:58,693 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 93 transitions. [2020-10-20 06:07:58,694 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-20 06:07:58,694 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 93 transitions. [2020-10-20 06:07:58,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-20 06:07:58,695 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:07:58,695 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:07:58,909 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-10-20 06:07:58,910 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-10-20 06:07:58,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:07:58,910 INFO L82 PathProgramCache]: Analyzing trace with hash -1432575182, now seen corresponding path program 1 times [2020-10-20 06:07:58,911 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 06:07:58,911 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [682640656] [2020-10-20 06:07:58,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-10-20 06:07:59,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:07:59,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-20 06:07:59,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:07:59,065 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-20 06:07:59,065 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:07:59,075 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:07:59,075 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:07:59,076 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-10-20 06:07:59,143 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-10-20 06:07:59,144 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:07:59,159 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:07:59,166 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-10-20 06:07:59,166 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-20 06:07:59,180 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:07:59,182 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:07:59,182 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:34, output treesize:23 [2020-10-20 06:07:59,226 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2020-10-20 06:07:59,226 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:07:59,245 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:07:59,248 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2020-10-20 06:07:59,249 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-20 06:07:59,260 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:07:59,261 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:07:59,261 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:39, output treesize:9 [2020-10-20 06:07:59,293 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:07:59,293 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 06:07:59,519 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:07:59,520 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [682640656] [2020-10-20 06:07:59,520 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:07:59,520 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2020-10-20 06:07:59,521 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990542243] [2020-10-20 06:07:59,521 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-20 06:07:59,521 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 06:07:59,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-20 06:07:59,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-20 06:07:59,522 INFO L87 Difference]: Start difference. First operand 83 states and 93 transitions. Second operand 10 states. [2020-10-20 06:08:00,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:08:00,967 INFO L93 Difference]: Finished difference Result 111 states and 124 transitions. [2020-10-20 06:08:00,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-20 06:08:00,969 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2020-10-20 06:08:00,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:08:00,971 INFO L225 Difference]: With dead ends: 111 [2020-10-20 06:08:00,971 INFO L226 Difference]: Without dead ends: 111 [2020-10-20 06:08:00,972 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2020-10-20 06:08:00,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-10-20 06:08:00,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 83. [2020-10-20 06:08:00,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-20 06:08:00,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 96 transitions. [2020-10-20 06:08:00,980 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 96 transitions. Word has length 17 [2020-10-20 06:08:00,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:08:00,980 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 96 transitions. [2020-10-20 06:08:00,980 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-20 06:08:00,981 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 96 transitions. [2020-10-20 06:08:00,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-20 06:08:00,982 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:08:00,982 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:08:01,184 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-10-20 06:08:01,186 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-10-20 06:08:01,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:08:01,187 INFO L82 PathProgramCache]: Analyzing trace with hash -1432575183, now seen corresponding path program 1 times [2020-10-20 06:08:01,187 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 06:08:01,188 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [862692317] [2020-10-20 06:08:01,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2020-10-20 06:08:01,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:08:01,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-20 06:08:01,312 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:08:01,317 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-20 06:08:01,318 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:08:01,320 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:08:01,320 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:08:01,320 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-10-20 06:08:01,330 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-10-20 06:08:01,331 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:08:01,348 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:08:01,349 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:08:01,350 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:21, output treesize:13 [2020-10-20 06:08:01,373 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2020-10-20 06:08:01,374 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:08:01,376 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:08:01,377 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:08:01,377 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:23, output treesize:7 [2020-10-20 06:08:01,397 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:08:01,398 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 06:08:01,417 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:08:01,417 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [862692317] [2020-10-20 06:08:01,417 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:08:01,417 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2020-10-20 06:08:01,418 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422945132] [2020-10-20 06:08:01,418 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 06:08:01,418 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 06:08:01,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 06:08:01,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-20 06:08:01,419 INFO L87 Difference]: Start difference. First operand 83 states and 96 transitions. Second operand 6 states. [2020-10-20 06:08:01,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:08:01,851 INFO L93 Difference]: Finished difference Result 102 states and 115 transitions. [2020-10-20 06:08:01,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-20 06:08:01,852 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-10-20 06:08:01,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:08:01,853 INFO L225 Difference]: With dead ends: 102 [2020-10-20 06:08:01,854 INFO L226 Difference]: Without dead ends: 102 [2020-10-20 06:08:01,854 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-20 06:08:01,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-10-20 06:08:01,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 81. [2020-10-20 06:08:01,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-20 06:08:01,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 92 transitions. [2020-10-20 06:08:01,863 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 92 transitions. Word has length 17 [2020-10-20 06:08:01,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:08:01,863 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 92 transitions. [2020-10-20 06:08:01,863 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 06:08:01,864 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 92 transitions. [2020-10-20 06:08:01,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-20 06:08:01,865 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:08:01,865 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:08:02,070 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-10-20 06:08:02,071 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-10-20 06:08:02,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:08:02,071 INFO L82 PathProgramCache]: Analyzing trace with hash 1962715062, now seen corresponding path program 1 times [2020-10-20 06:08:02,072 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 06:08:02,072 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1625209609] [2020-10-20 06:08:02,073 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 [2020-10-20 06:08:02,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:08:02,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-20 06:08:02,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:08:02,178 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-20 06:08:02,178 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:08:02,179 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:08:02,180 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:08:02,180 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-10-20 06:08:02,193 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-10-20 06:08:02,194 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:08:02,201 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:08:02,202 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:08:02,202 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:21, output treesize:13 [2020-10-20 06:08:02,220 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2020-10-20 06:08:02,221 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:08:02,223 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:08:02,223 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:08:02,224 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:23, output treesize:7 [2020-10-20 06:08:02,248 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:08:02,249 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 06:08:02,266 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:08:02,267 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1625209609] [2020-10-20 06:08:02,267 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:08:02,267 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2020-10-20 06:08:02,267 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747427700] [2020-10-20 06:08:02,268 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 06:08:02,268 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 06:08:02,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 06:08:02,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-20 06:08:02,268 INFO L87 Difference]: Start difference. First operand 81 states and 92 transitions. Second operand 6 states. [2020-10-20 06:08:02,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:08:02,612 INFO L93 Difference]: Finished difference Result 100 states and 112 transitions. [2020-10-20 06:08:02,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-20 06:08:02,612 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-10-20 06:08:02,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:08:02,613 INFO L225 Difference]: With dead ends: 100 [2020-10-20 06:08:02,613 INFO L226 Difference]: Without dead ends: 100 [2020-10-20 06:08:02,614 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-20 06:08:02,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-10-20 06:08:02,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 79. [2020-10-20 06:08:02,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-20 06:08:02,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 89 transitions. [2020-10-20 06:08:02,620 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 89 transitions. Word has length 18 [2020-10-20 06:08:02,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:08:02,620 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 89 transitions. [2020-10-20 06:08:02,620 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 06:08:02,620 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 89 transitions. [2020-10-20 06:08:02,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-20 06:08:02,621 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:08:02,622 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:08:02,827 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-10-20 06:08:02,828 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-10-20 06:08:02,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:08:02,829 INFO L82 PathProgramCache]: Analyzing trace with hash 1962715063, now seen corresponding path program 1 times [2020-10-20 06:08:02,829 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 06:08:02,830 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1745278151] [2020-10-20 06:08:02,830 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 [2020-10-20 06:08:02,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:08:02,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-20 06:08:02,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:08:02,940 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-20 06:08:02,941 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:08:02,949 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:08:02,949 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:08:02,950 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-10-20 06:08:02,971 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-10-20 06:08:02,971 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:08:02,982 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:08:02,986 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-10-20 06:08:02,986 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-20 06:08:02,996 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:08:02,997 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:08:02,998 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:34, output treesize:23 [2020-10-20 06:08:03,026 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2020-10-20 06:08:03,027 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:08:03,035 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:08:03,038 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2020-10-20 06:08:03,038 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-20 06:08:03,044 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:08:03,045 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:08:03,045 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:39, output treesize:9 [2020-10-20 06:08:03,072 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:08:03,073 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 06:08:03,287 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:08:03,288 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1745278151] [2020-10-20 06:08:03,288 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:08:03,289 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2020-10-20 06:08:03,289 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665434076] [2020-10-20 06:08:03,290 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-20 06:08:03,290 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 06:08:03,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-20 06:08:03,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-20 06:08:03,291 INFO L87 Difference]: Start difference. First operand 79 states and 89 transitions. Second operand 10 states. [2020-10-20 06:08:04,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:08:04,534 INFO L93 Difference]: Finished difference Result 98 states and 109 transitions. [2020-10-20 06:08:04,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-20 06:08:04,535 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 18 [2020-10-20 06:08:04,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:08:04,536 INFO L225 Difference]: With dead ends: 98 [2020-10-20 06:08:04,536 INFO L226 Difference]: Without dead ends: 98 [2020-10-20 06:08:04,536 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2020-10-20 06:08:04,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-20 06:08:04,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 67. [2020-10-20 06:08:04,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-20 06:08:04,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 75 transitions. [2020-10-20 06:08:04,543 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 75 transitions. Word has length 18 [2020-10-20 06:08:04,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:08:04,543 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 75 transitions. [2020-10-20 06:08:04,544 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-20 06:08:04,544 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 75 transitions. [2020-10-20 06:08:04,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-20 06:08:04,545 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:08:04,545 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:08:04,748 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2020-10-20 06:08:04,749 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-10-20 06:08:04,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:08:04,750 INFO L82 PathProgramCache]: Analyzing trace with hash 1010435462, now seen corresponding path program 1 times [2020-10-20 06:08:04,750 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 06:08:04,751 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2110815960] [2020-10-20 06:08:04,751 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 [2020-10-20 06:08:04,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:08:04,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-20 06:08:04,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:08:04,871 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-10-20 06:08:04,871 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:08:04,874 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:08:04,874 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:08:04,875 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:7 [2020-10-20 06:08:04,899 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2020-10-20 06:08:04,900 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:08:04,902 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:08:04,903 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:08:04,903 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:17, output treesize:5 [2020-10-20 06:08:04,919 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:08:04,920 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 06:08:04,967 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 18 treesize of output 14 [2020-10-20 06:08:04,969 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-10-20 06:08:04,974 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:08:04,975 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2020-10-20 06:08:04,975 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:18, output treesize:7 [2020-10-20 06:08:04,980 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:08:04,980 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2110815960] [2020-10-20 06:08:04,980 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:08:04,981 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9 [2020-10-20 06:08:04,981 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902276042] [2020-10-20 06:08:04,982 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-20 06:08:04,982 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 06:08:04,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-20 06:08:04,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-20 06:08:04,982 INFO L87 Difference]: Start difference. First operand 67 states and 75 transitions. Second operand 9 states. [2020-10-20 06:08:05,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:08:05,586 INFO L93 Difference]: Finished difference Result 135 states and 148 transitions. [2020-10-20 06:08:05,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-20 06:08:05,590 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 19 [2020-10-20 06:08:05,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:08:05,591 INFO L225 Difference]: With dead ends: 135 [2020-10-20 06:08:05,591 INFO L226 Difference]: Without dead ends: 135 [2020-10-20 06:08:05,592 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2020-10-20 06:08:05,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-10-20 06:08:05,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 85. [2020-10-20 06:08:05,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-20 06:08:05,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 96 transitions. [2020-10-20 06:08:05,598 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 96 transitions. Word has length 19 [2020-10-20 06:08:05,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:08:05,599 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 96 transitions. [2020-10-20 06:08:05,599 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-20 06:08:05,599 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 96 transitions. [2020-10-20 06:08:05,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-20 06:08:05,600 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:08:05,601 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] [2020-10-20 06:08:05,812 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2020-10-20 06:08:05,813 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-10-20 06:08:05,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:08:05,814 INFO L82 PathProgramCache]: Analyzing trace with hash 1257104172, now seen corresponding path program 1 times [2020-10-20 06:08:05,815 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 06:08:05,815 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [961629725] [2020-10-20 06:08:05,815 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 [2020-10-20 06:08:05,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:08:05,930 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:08:05,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:08:05,970 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:08:06,007 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-10-20 06:08:06,011 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 06:08:06,212 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 mathsat -unsat_core_generation=3 [2020-10-20 06:08:06,226 WARN L417 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2020-10-20 06:08:06,242 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 06:08:06 BoogieIcfgContainer [2020-10-20 06:08:06,242 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 06:08:06,243 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 06:08:06,243 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 06:08:06,243 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 06:08:06,244 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:07:55" (3/4) ... [2020-10-20 06:08:06,248 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-20 06:08:06,248 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 06:08:06,250 INFO L168 Benchmark]: Toolchain (without parser) took 12482.78 ms. Allocated memory was 34.6 MB in the beginning and 78.1 MB in the end (delta: 43.5 MB). Free memory was 10.3 MB in the beginning and 17.8 MB in the end (delta: -7.6 MB). Peak memory consumption was 36.0 MB. Max. memory is 14.3 GB. [2020-10-20 06:08:06,250 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 33.6 MB. Free memory is still 18.1 MB. There was no memory consumed. Max. memory is 14.3 GB. [2020-10-20 06:08:06,251 INFO L168 Benchmark]: CACSL2BoogieTranslator took 693.41 ms. Allocated memory was 34.6 MB in the beginning and 45.1 MB in the end (delta: 10.5 MB). Free memory was 9.4 MB in the beginning and 24.4 MB in the end (delta: -15.1 MB). Peak memory consumption was 9.5 MB. Max. memory is 14.3 GB. [2020-10-20 06:08:06,252 INFO L168 Benchmark]: Boogie Preprocessor took 76.56 ms. Allocated memory is still 45.1 MB. Free memory was 24.4 MB in the beginning and 21.2 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 14.3 GB. [2020-10-20 06:08:06,252 INFO L168 Benchmark]: RCFGBuilder took 842.87 ms. Allocated memory was 45.1 MB in the beginning and 49.3 MB in the end (delta: 4.2 MB). Free memory was 21.0 MB in the beginning and 16.0 MB in the end (delta: 5.0 MB). Peak memory consumption was 12.1 MB. Max. memory is 14.3 GB. [2020-10-20 06:08:06,253 INFO L168 Benchmark]: TraceAbstraction took 10853.85 ms. Allocated memory was 49.3 MB in the beginning and 78.1 MB in the end (delta: 28.8 MB). Free memory was 15.6 MB in the beginning and 17.8 MB in the end (delta: -2.2 MB). Peak memory consumption was 26.6 MB. Max. memory is 14.3 GB. [2020-10-20 06:08:06,254 INFO L168 Benchmark]: Witness Printer took 5.51 ms. Allocated memory is still 78.1 MB. Free memory is still 17.8 MB. There was no memory consumed. Max. memory is 14.3 GB. [2020-10-20 06:08:06,257 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 33.6 MB. Free memory is still 18.1 MB. There was no memory consumed. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 693.41 ms. Allocated memory was 34.6 MB in the beginning and 45.1 MB in the end (delta: 10.5 MB). Free memory was 9.4 MB in the beginning and 24.4 MB in the end (delta: -15.1 MB). Peak memory consumption was 9.5 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 76.56 ms. Allocated memory is still 45.1 MB. Free memory was 24.4 MB in the beginning and 21.2 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 14.3 GB. * RCFGBuilder took 842.87 ms. Allocated memory was 45.1 MB in the beginning and 49.3 MB in the end (delta: 4.2 MB). Free memory was 21.0 MB in the beginning and 16.0 MB in the end (delta: 5.0 MB). Peak memory consumption was 12.1 MB. Max. memory is 14.3 GB. * TraceAbstraction took 10853.85 ms. Allocated memory was 49.3 MB in the beginning and 78.1 MB in the end (delta: 28.8 MB). Free memory was 15.6 MB in the beginning and 17.8 MB in the end (delta: -2.2 MB). Peak memory consumption was 26.6 MB. Max. memory is 14.3 GB. * Witness Printer took 5.51 ms. Allocated memory is still 78.1 MB. Free memory is still 17.8 MB. There was no memory consumed. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 531]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 531. Possible FailurePath: [L532] List a = (List) malloc(sizeof(struct node)); VAL [a={1:0}, malloc(sizeof(struct node))={1:0}] [L533] COND FALSE !(a == 0) VAL [a={1:0}, malloc(sizeof(struct node))={1:0}] [L534] List t; [L535] List p = a; VAL [a={1:0}, malloc(sizeof(struct node))={1:0}, p={1:0}] [L536] COND FALSE !(__VERIFIER_nondet_int()) [L543] COND FALSE !(__VERIFIER_nondet_int()) [L550] p->h = 3 VAL [a={1:0}, malloc(sizeof(struct node))={1:0}, p={1:0}] [L551] p = a VAL [a={1:0}, malloc(sizeof(struct node))={1:0}, p={1:0}] [L552] EXPR p->h VAL [a={1:0}, malloc(sizeof(struct node))={1:0}, p={1:0}, p->h=3] [L552] COND FALSE !(p->h == 1) [L554] EXPR p->h VAL [a={1:0}, malloc(sizeof(struct node))={1:0}, p={1:0}, p->h=3] [L554] COND FALSE !(p->h == 2) [L556] EXPR p->h VAL [a={1:0}, malloc(sizeof(struct node))={1:0}, p={1:0}, p->h=3] [L556] COND FALSE !(p->h != 3) [L558] return 0; VAL [\result=0, a={1:0}, malloc(sizeof(struct node))={1:0}, p={1:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 11 procedures, 98 locations, 26 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 10.7s, OverallIterations: 9, TraceHistogramMax: 2, AutomataDifference: 5.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 362 SDtfs, 858 SDslu, 1153 SDs, 0 SdLazy, 1460 SolverSat, 160 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 282 GetRequests, 203 SyntacticMatches, 2 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 1.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=85occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 242 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 146 NumberOfCodeBlocks, 146 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 236 ConstructedInterpolants, 0 QuantifiedInterpolants, 15614 SizeOfPredicates, 62 NumberOfNonLiveVariables, 688 ConjunctsInSsa, 59 ConjunctsInUnsatCore, 16 InterpolantComputations, 16 PerfectInterpolantSequences, 16/16 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...