./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../sv-benchmarks/c/heap-manipulation/merge_sort-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) 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/heap-manipulation/merge_sort-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-MemCleanup-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-memcleanup) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 54165abed718b8d39f88748583b76365fb540324 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-memcleanup) --- Real Ultimate output --- This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 06:18:09,668 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 06:18:09,671 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 06:18:09,710 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 06:18:09,711 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 06:18:09,720 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 06:18:09,728 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 06:18:09,733 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 06:18:09,735 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 06:18:09,738 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 06:18:09,739 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 06:18:09,741 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 06:18:09,741 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 06:18:09,744 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 06:18:09,745 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 06:18:09,747 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 06:18:09,748 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 06:18:09,749 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 06:18:09,751 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 06:18:09,757 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 06:18:09,759 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 06:18:09,760 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 06:18:09,761 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 06:18:09,762 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 06:18:09,778 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 06:18:09,778 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 06:18:09,778 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 06:18:09,779 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 06:18:09,780 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 06:18:09,782 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 06:18:09,783 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 06:18:09,783 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 06:18:09,786 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 06:18:09,786 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 06:18:09,787 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 06:18:09,787 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 06:18:09,788 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 06:18:09,788 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 06:18:09,788 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 06:18:09,789 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 06:18:09,791 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 06:18:09,791 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-MemCleanup-32bit-Automizer_Default.epf [2020-10-20 06:18:09,832 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 06:18:09,832 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 06:18:09,835 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 06:18:09,835 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 06:18:09,836 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 06:18:09,836 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 06:18:09,836 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 06:18:09,836 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-20 06:18:09,836 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 06:18:09,837 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 06:18:09,838 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 06:18:09,838 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-10-20 06:18:09,838 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-10-20 06:18:09,838 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 06:18:09,839 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-10-20 06:18:09,839 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 06:18:09,839 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 06:18:09,840 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 06:18:09,840 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 06:18:09,841 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 06:18:09,841 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 06:18:09,841 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 06:18:09,841 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 06:18:09,842 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 06:18:09,842 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 06:18:09,842 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 06:18:09,842 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 06:18:09,843 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-memcleanup) ) 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 -> 54165abed718b8d39f88748583b76365fb540324 [2020-10-20 06:18:10,056 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 06:18:10,068 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 06:18:10,072 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 06:18:10,073 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 06:18:10,074 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 06:18:10,075 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/heap-manipulation/merge_sort-1.i [2020-10-20 06:18:10,156 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7dc89cff5/1e8678943ef4401880e310b13e3a78c9/FLAG4e3007fad [2020-10-20 06:18:10,750 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 06:18:10,751 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/heap-manipulation/merge_sort-1.i [2020-10-20 06:18:10,764 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7dc89cff5/1e8678943ef4401880e310b13e3a78c9/FLAG4e3007fad [2020-10-20 06:18:11,049 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7dc89cff5/1e8678943ef4401880e310b13e3a78c9 [2020-10-20 06:18:11,052 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 06:18:11,058 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-20 06:18:11,059 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 06:18:11,060 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 06:18:11,063 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 06:18:11,064 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:18:11" (1/1) ... [2020-10-20 06:18:11,067 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19db553 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:18:11, skipping insertion in model container [2020-10-20 06:18:11,067 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:18:11" (1/1) ... [2020-10-20 06:18:11,075 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 06:18:11,113 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 06:18:11,452 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:18:11,463 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 06:18:11,542 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:18:11,597 INFO L208 MainTranslator]: Completed translation [2020-10-20 06:18:11,597 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:18:11 WrapperNode [2020-10-20 06:18:11,598 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 06:18:11,598 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 06:18:11,608 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 06:18:11,608 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 06:18:11,622 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:18:11" (1/1) ... [2020-10-20 06:18:11,623 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:18:11" (1/1) ... [2020-10-20 06:18:11,665 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:18:11" (1/1) ... [2020-10-20 06:18:11,668 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:18:11" (1/1) ... [2020-10-20 06:18:11,696 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:18:11" (1/1) ... [2020-10-20 06:18:11,708 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:18:11" (1/1) ... [2020-10-20 06:18:11,713 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:18:11" (1/1) ... [2020-10-20 06:18:11,721 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 06:18:11,722 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 06:18:11,722 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 06:18:11,722 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 06:18:11,723 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:18:11" (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 06:18:11,793 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-20 06:18:11,793 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 06:18:11,793 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-20 06:18:11,793 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-20 06:18:11,793 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-20 06:18:11,794 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2020-10-20 06:18:11,794 INFO L138 BoogieDeclarations]: Found implementation of procedure merge_single_node [2020-10-20 06:18:11,794 INFO L138 BoogieDeclarations]: Found implementation of procedure merge_pair [2020-10-20 06:18:11,794 INFO L138 BoogieDeclarations]: Found implementation of procedure seq_sort_core [2020-10-20 06:18:11,794 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_before [2020-10-20 06:18:11,794 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_after [2020-10-20 06:18:11,795 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-20 06:18:11,795 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-20 06:18:11,795 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-20 06:18:11,795 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-20 06:18:11,795 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-20 06:18:11,795 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-20 06:18:11,796 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 06:18:11,796 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-20 06:18:11,796 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-20 06:18:11,796 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-20 06:18:11,796 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-20 06:18:11,796 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-20 06:18:11,796 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-20 06:18:11,797 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-20 06:18:11,797 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-20 06:18:11,797 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-20 06:18:11,797 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-20 06:18:11,797 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-20 06:18:11,797 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-20 06:18:11,797 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-20 06:18:11,798 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-20 06:18:11,798 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-20 06:18:11,798 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-20 06:18:11,798 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-20 06:18:11,798 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-20 06:18:11,798 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-20 06:18:11,798 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-20 06:18:11,799 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-20 06:18:11,799 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-20 06:18:11,799 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-20 06:18:11,799 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-20 06:18:11,799 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-20 06:18:11,799 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-20 06:18:11,799 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-20 06:18:11,800 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-20 06:18:11,800 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-20 06:18:11,800 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-20 06:18:11,800 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-20 06:18:11,800 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-20 06:18:11,800 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-20 06:18:11,800 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-20 06:18:11,801 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-20 06:18:11,801 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-20 06:18:11,801 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-20 06:18:11,801 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-20 06:18:11,801 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-20 06:18:11,801 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-20 06:18:11,802 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-20 06:18:11,802 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-20 06:18:11,802 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-20 06:18:11,802 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-20 06:18:11,802 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-20 06:18:11,802 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-20 06:18:11,802 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-20 06:18:11,803 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-20 06:18:11,803 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-20 06:18:11,803 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-20 06:18:11,803 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-20 06:18:11,803 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-20 06:18:11,803 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-20 06:18:11,803 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-20 06:18:11,803 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-20 06:18:11,804 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-20 06:18:11,804 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-20 06:18:11,804 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-20 06:18:11,804 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-20 06:18:11,804 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-20 06:18:11,804 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-20 06:18:11,804 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-20 06:18:11,805 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-20 06:18:11,805 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-20 06:18:11,805 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-20 06:18:11,805 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-20 06:18:11,805 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-20 06:18:11,805 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-20 06:18:11,806 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-20 06:18:11,806 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-20 06:18:11,806 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-20 06:18:11,806 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-20 06:18:11,806 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-20 06:18:11,806 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-20 06:18:11,806 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-20 06:18:11,806 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-20 06:18:11,807 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-20 06:18:11,807 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-20 06:18:11,807 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-20 06:18:11,807 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-20 06:18:11,807 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-20 06:18:11,807 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-20 06:18:11,807 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-20 06:18:11,808 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-20 06:18:11,808 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-20 06:18:11,808 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-20 06:18:11,808 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-20 06:18:11,808 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-20 06:18:11,808 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-20 06:18:11,808 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-20 06:18:11,809 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-20 06:18:11,809 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-20 06:18:11,809 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-20 06:18:11,809 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-20 06:18:11,809 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-20 06:18:11,809 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-20 06:18:11,809 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-20 06:18:11,809 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-20 06:18:11,810 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-20 06:18:11,810 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-20 06:18:11,810 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-20 06:18:11,810 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-20 06:18:11,810 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2020-10-20 06:18:11,810 INFO L130 BoogieDeclarations]: Found specification of procedure merge_single_node [2020-10-20 06:18:11,810 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-20 06:18:11,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-20 06:18:11,811 INFO L130 BoogieDeclarations]: Found specification of procedure merge_pair [2020-10-20 06:18:11,811 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-20 06:18:11,811 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 06:18:11,811 INFO L130 BoogieDeclarations]: Found specification of procedure seq_sort_core [2020-10-20 06:18:11,811 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_before [2020-10-20 06:18:11,811 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_after [2020-10-20 06:18:11,812 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-20 06:18:11,812 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-20 06:18:11,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-20 06:18:11,823 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-20 06:18:11,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 06:18:11,823 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 06:18:12,846 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 06:18:12,847 INFO L298 CfgBuilder]: Removed 33 assume(true) statements. [2020-10-20 06:18:12,849 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:18:12 BoogieIcfgContainer [2020-10-20 06:18:12,849 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 06:18:12,850 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 06:18:12,850 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 06:18:12,854 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 06:18:12,854 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 06:18:11" (1/3) ... [2020-10-20 06:18:12,855 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63f9b342 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 06:18:12, skipping insertion in model container [2020-10-20 06:18:12,855 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:18:11" (2/3) ... [2020-10-20 06:18:12,856 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63f9b342 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 06:18:12, skipping insertion in model container [2020-10-20 06:18:12,856 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:18:12" (3/3) ... [2020-10-20 06:18:12,857 INFO L111 eAbstractionObserver]: Analyzing ICFG merge_sort-1.i [2020-10-20 06:18:12,870 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 06:18:12,877 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 105 error locations. [2020-10-20 06:18:12,892 INFO L253 AbstractCegarLoop]: Starting to check reachability of 105 error locations. [2020-10-20 06:18:12,917 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 06:18:12,917 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-20 06:18:12,918 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 06:18:12,918 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 06:18:12,918 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 06:18:12,918 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 06:18:12,918 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 06:18:12,919 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 06:18:12,945 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states. [2020-10-20 06:18:12,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-20 06:18:12,972 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:18:12,973 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:18:12,974 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, merge_pairErr14REQUIRES_VIOLATION, merge_pairErr4REQUIRES_VIOLATION, merge_pairErr15REQUIRES_VIOLATION, merge_pairErr2REQUIRES_VIOLATION, merge_pairErr13REQUIRES_VIOLATION, merge_pairErr3REQUIRES_VIOLATION, merge_pairErr1REQUIRES_VIOLATION, merge_pairErr12REQUIRES_VIOLATION, merge_pairErr10REQUIRES_VIOLATION, merge_pairErr21REQUIRES_VIOLATION, merge_pairErr0REQUIRES_VIOLATION, merge_pairErr11REQUIRES_VIOLATION, merge_pairErr9REQUIRES_VIOLATION, merge_pairErr20REQUIRES_VIOLATION, merge_pairErr18REQUIRES_VIOLATION, merge_pairErr8REQUIRES_VIOLATION, merge_pairErr19REQUIRES_VIOLATION, merge_pairErr6REQUIRES_VIOLATION, merge_pairErr17REQUIRES_VIOLATION, merge_pairErr7REQUIRES_VIOLATION, merge_pairErr5REQUIRES_VIOLATION, merge_pairErr16REQUIRES_VIOLATION, merge_single_nodeErr9REQUIRES_VIOLATION, merge_single_nodeErr8REQUIRES_VIOLATION, merge_single_nodeErr12REQUIRES_VIOLATION, merge_single_nodeErr1REQUIRES_VIOLATION, merge_single_nodeErr11REQUIRES_VIOLATION, merge_single_nodeErr0REQUIRES_VIOLATION, merge_single_nodeErr10REQUIRES_VIOLATION, merge_single_nodeErr4REQUIRES_VIOLATION, merge_single_nodeErr3REQUIRES_VIOLATION, merge_single_nodeErr13REQUIRES_VIOLATION, merge_single_nodeErr2REQUIRES_VIOLATION, merge_single_nodeErr7REQUIRES_VIOLATION, merge_single_nodeErr6REQUIRES_VIOLATION, merge_single_nodeErr5REQUIRES_VIOLATION, seq_sort_coreErr4REQUIRES_VIOLATION, seq_sort_coreErr2REQUIRES_VIOLATION, seq_sort_coreErr14ASSERT_VIOLATIONMEMORY_FREE, seq_sort_coreErr3REQUIRES_VIOLATION, seq_sort_coreErr6REQUIRES_VIOLATION, seq_sort_coreErr7REQUIRES_VIOLATION, seq_sort_coreErr5REQUIRES_VIOLATION, seq_sort_coreErr9REQUIRES_VIOLATION, seq_sort_coreErr12ASSERT_VIOLATIONMEMORY_FREE, seq_sort_coreErr13ASSERT_VIOLATIONMEMORY_FREE, seq_sort_coreErr8REQUIRES_VIOLATION, seq_sort_coreErr0REQUIRES_VIOLATION, seq_sort_coreErr10REQUIRES_VIOLATION, seq_sort_coreErr1REQUIRES_VIOLATION, seq_sort_coreErr11REQUIRES_VIOLATION, inspect_beforeErr16REQUIRES_VIOLATION, inspect_beforeErr5REQUIRES_VIOLATION, inspect_beforeErr7REQUIRES_VIOLATION, inspect_beforeErr6REQUIRES_VIOLATION, inspect_beforeErr17REQUIRES_VIOLATION, inspect_beforeErr3REQUIRES_VIOLATION, inspect_beforeErr2REQUIRES_VIOLATION, inspect_beforeErr13REQUIRES_VIOLATION, inspect_beforeErr4REQUIRES_VIOLATION, inspect_beforeErr15REQUIRES_VIOLATION, inspect_beforeErr14REQUIRES_VIOLATION, inspect_beforeErr0REQUIRES_VIOLATION, inspect_beforeErr11REQUIRES_VIOLATION, inspect_beforeErr10REQUIRES_VIOLATION, inspect_beforeErr12REQUIRES_VIOLATION, inspect_beforeErr1REQUIRES_VIOLATION, inspect_beforeErr8REQUIRES_VIOLATION, inspect_beforeErr19REQUIRES_VIOLATION, inspect_beforeErr18REQUIRES_VIOLATION, inspect_beforeErr9REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr9REQUIRES_VIOLATION, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr19ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17ASSERT_VIOLATIONMEMORY_FREE, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr18ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr20ENSURES_VIOLATIONMEMORY_LEAK, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, inspect_afterErr2REQUIRES_VIOLATION, inspect_afterErr3REQUIRES_VIOLATION, inspect_afterErr8REQUIRES_VIOLATION, inspect_afterErr9REQUIRES_VIOLATION, inspect_afterErr4REQUIRES_VIOLATION, inspect_afterErr5REQUIRES_VIOLATION, inspect_afterErr10REQUIRES_VIOLATION, inspect_afterErr0REQUIRES_VIOLATION, inspect_afterErr11REQUIRES_VIOLATION, inspect_afterErr1REQUIRES_VIOLATION, inspect_afterErr6REQUIRES_VIOLATION, inspect_afterErr7REQUIRES_VIOLATION]=== [2020-10-20 06:18:12,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:18:12,980 INFO L82 PathProgramCache]: Analyzing trace with hash 1669507998, now seen corresponding path program 1 times [2020-10-20 06:18:12,991 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:18:12,992 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886760318] [2020-10-20 06:18:12,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:18:13,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:18:13,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:18:13,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:18:13,201 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 06:18:13,202 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886760318] [2020-10-20 06:18:13,203 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:18:13,204 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 06:18:13,205 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370650136] [2020-10-20 06:18:13,210 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 06:18:13,211 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:18:13,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 06:18:13,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 06:18:13,230 INFO L87 Difference]: Start difference. First operand 284 states. Second operand 3 states. [2020-10-20 06:18:13,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:18:13,873 INFO L93 Difference]: Finished difference Result 322 states and 357 transitions. [2020-10-20 06:18:13,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 06:18:13,875 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-10-20 06:18:13,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:18:13,892 INFO L225 Difference]: With dead ends: 322 [2020-10-20 06:18:13,892 INFO L226 Difference]: Without dead ends: 317 [2020-10-20 06:18:13,894 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 06:18:13,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2020-10-20 06:18:13,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 279. [2020-10-20 06:18:13,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 279 states. [2020-10-20 06:18:13,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 305 transitions. [2020-10-20 06:18:13,970 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 305 transitions. Word has length 9 [2020-10-20 06:18:13,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:18:13,971 INFO L481 AbstractCegarLoop]: Abstraction has 279 states and 305 transitions. [2020-10-20 06:18:13,971 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 06:18:13,971 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 305 transitions. [2020-10-20 06:18:13,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-20 06:18:13,974 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:18:13,974 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:18:13,975 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 06:18:13,976 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, merge_pairErr14REQUIRES_VIOLATION, merge_pairErr4REQUIRES_VIOLATION, merge_pairErr15REQUIRES_VIOLATION, merge_pairErr2REQUIRES_VIOLATION, merge_pairErr13REQUIRES_VIOLATION, merge_pairErr3REQUIRES_VIOLATION, merge_pairErr1REQUIRES_VIOLATION, merge_pairErr12REQUIRES_VIOLATION, merge_pairErr10REQUIRES_VIOLATION, merge_pairErr21REQUIRES_VIOLATION, merge_pairErr0REQUIRES_VIOLATION, merge_pairErr11REQUIRES_VIOLATION, merge_pairErr9REQUIRES_VIOLATION, merge_pairErr20REQUIRES_VIOLATION, merge_pairErr18REQUIRES_VIOLATION, merge_pairErr8REQUIRES_VIOLATION, merge_pairErr19REQUIRES_VIOLATION, merge_pairErr6REQUIRES_VIOLATION, merge_pairErr17REQUIRES_VIOLATION, merge_pairErr7REQUIRES_VIOLATION, merge_pairErr5REQUIRES_VIOLATION, merge_pairErr16REQUIRES_VIOLATION, merge_single_nodeErr9REQUIRES_VIOLATION, merge_single_nodeErr8REQUIRES_VIOLATION, merge_single_nodeErr12REQUIRES_VIOLATION, merge_single_nodeErr1REQUIRES_VIOLATION, merge_single_nodeErr11REQUIRES_VIOLATION, merge_single_nodeErr0REQUIRES_VIOLATION, merge_single_nodeErr10REQUIRES_VIOLATION, merge_single_nodeErr4REQUIRES_VIOLATION, merge_single_nodeErr3REQUIRES_VIOLATION, merge_single_nodeErr13REQUIRES_VIOLATION, merge_single_nodeErr2REQUIRES_VIOLATION, merge_single_nodeErr7REQUIRES_VIOLATION, merge_single_nodeErr6REQUIRES_VIOLATION, merge_single_nodeErr5REQUIRES_VIOLATION, seq_sort_coreErr4REQUIRES_VIOLATION, seq_sort_coreErr2REQUIRES_VIOLATION, seq_sort_coreErr14ASSERT_VIOLATIONMEMORY_FREE, seq_sort_coreErr3REQUIRES_VIOLATION, seq_sort_coreErr6REQUIRES_VIOLATION, seq_sort_coreErr7REQUIRES_VIOLATION, seq_sort_coreErr5REQUIRES_VIOLATION, seq_sort_coreErr9REQUIRES_VIOLATION, seq_sort_coreErr12ASSERT_VIOLATIONMEMORY_FREE, seq_sort_coreErr13ASSERT_VIOLATIONMEMORY_FREE, seq_sort_coreErr8REQUIRES_VIOLATION, seq_sort_coreErr0REQUIRES_VIOLATION, seq_sort_coreErr10REQUIRES_VIOLATION, seq_sort_coreErr1REQUIRES_VIOLATION, seq_sort_coreErr11REQUIRES_VIOLATION, inspect_beforeErr16REQUIRES_VIOLATION, inspect_beforeErr5REQUIRES_VIOLATION, inspect_beforeErr7REQUIRES_VIOLATION, inspect_beforeErr6REQUIRES_VIOLATION, inspect_beforeErr17REQUIRES_VIOLATION, inspect_beforeErr3REQUIRES_VIOLATION, inspect_beforeErr2REQUIRES_VIOLATION, inspect_beforeErr13REQUIRES_VIOLATION, inspect_beforeErr4REQUIRES_VIOLATION, inspect_beforeErr15REQUIRES_VIOLATION, inspect_beforeErr14REQUIRES_VIOLATION, inspect_beforeErr0REQUIRES_VIOLATION, inspect_beforeErr11REQUIRES_VIOLATION, inspect_beforeErr10REQUIRES_VIOLATION, inspect_beforeErr12REQUIRES_VIOLATION, inspect_beforeErr1REQUIRES_VIOLATION, inspect_beforeErr8REQUIRES_VIOLATION, inspect_beforeErr19REQUIRES_VIOLATION, inspect_beforeErr18REQUIRES_VIOLATION, inspect_beforeErr9REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr9REQUIRES_VIOLATION, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr19ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17ASSERT_VIOLATIONMEMORY_FREE, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr18ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr20ENSURES_VIOLATIONMEMORY_LEAK, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, inspect_afterErr2REQUIRES_VIOLATION, inspect_afterErr3REQUIRES_VIOLATION, inspect_afterErr8REQUIRES_VIOLATION, inspect_afterErr9REQUIRES_VIOLATION, inspect_afterErr4REQUIRES_VIOLATION, inspect_afterErr5REQUIRES_VIOLATION, inspect_afterErr10REQUIRES_VIOLATION, inspect_afterErr0REQUIRES_VIOLATION, inspect_afterErr11REQUIRES_VIOLATION, inspect_afterErr1REQUIRES_VIOLATION, inspect_afterErr6REQUIRES_VIOLATION, inspect_afterErr7REQUIRES_VIOLATION]=== [2020-10-20 06:18:13,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:18:13,976 INFO L82 PathProgramCache]: Analyzing trace with hash 214093638, now seen corresponding path program 1 times [2020-10-20 06:18:13,977 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:18:13,977 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927790167] [2020-10-20 06:18:14,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:18:14,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:18:14,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:18:14,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:18:14,107 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 06:18:14,107 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927790167] [2020-10-20 06:18:14,107 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:18:14,108 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 06:18:14,108 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152092134] [2020-10-20 06:18:14,109 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 06:18:14,110 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:18:14,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 06:18:14,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 06:18:14,110 INFO L87 Difference]: Start difference. First operand 279 states and 305 transitions. Second operand 4 states. [2020-10-20 06:18:15,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:18:15,003 INFO L93 Difference]: Finished difference Result 346 states and 384 transitions. [2020-10-20 06:18:15,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 06:18:15,004 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-10-20 06:18:15,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:18:15,007 INFO L225 Difference]: With dead ends: 346 [2020-10-20 06:18:15,007 INFO L226 Difference]: Without dead ends: 346 [2020-10-20 06:18:15,008 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 06:18:15,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2020-10-20 06:18:15,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 277. [2020-10-20 06:18:15,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 277 states. [2020-10-20 06:18:15,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 303 transitions. [2020-10-20 06:18:15,029 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 303 transitions. Word has length 10 [2020-10-20 06:18:15,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:18:15,030 INFO L481 AbstractCegarLoop]: Abstraction has 277 states and 303 transitions. [2020-10-20 06:18:15,030 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 06:18:15,030 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 303 transitions. [2020-10-20 06:18:15,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-20 06:18:15,030 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:18:15,031 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:18:15,031 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 06:18:15,031 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, merge_pairErr14REQUIRES_VIOLATION, merge_pairErr4REQUIRES_VIOLATION, merge_pairErr15REQUIRES_VIOLATION, merge_pairErr2REQUIRES_VIOLATION, merge_pairErr13REQUIRES_VIOLATION, merge_pairErr3REQUIRES_VIOLATION, merge_pairErr1REQUIRES_VIOLATION, merge_pairErr12REQUIRES_VIOLATION, merge_pairErr10REQUIRES_VIOLATION, merge_pairErr21REQUIRES_VIOLATION, merge_pairErr0REQUIRES_VIOLATION, merge_pairErr11REQUIRES_VIOLATION, merge_pairErr9REQUIRES_VIOLATION, merge_pairErr20REQUIRES_VIOLATION, merge_pairErr18REQUIRES_VIOLATION, merge_pairErr8REQUIRES_VIOLATION, merge_pairErr19REQUIRES_VIOLATION, merge_pairErr6REQUIRES_VIOLATION, merge_pairErr17REQUIRES_VIOLATION, merge_pairErr7REQUIRES_VIOLATION, merge_pairErr5REQUIRES_VIOLATION, merge_pairErr16REQUIRES_VIOLATION, merge_single_nodeErr9REQUIRES_VIOLATION, merge_single_nodeErr8REQUIRES_VIOLATION, merge_single_nodeErr12REQUIRES_VIOLATION, merge_single_nodeErr1REQUIRES_VIOLATION, merge_single_nodeErr11REQUIRES_VIOLATION, merge_single_nodeErr0REQUIRES_VIOLATION, merge_single_nodeErr10REQUIRES_VIOLATION, merge_single_nodeErr4REQUIRES_VIOLATION, merge_single_nodeErr3REQUIRES_VIOLATION, merge_single_nodeErr13REQUIRES_VIOLATION, merge_single_nodeErr2REQUIRES_VIOLATION, merge_single_nodeErr7REQUIRES_VIOLATION, merge_single_nodeErr6REQUIRES_VIOLATION, merge_single_nodeErr5REQUIRES_VIOLATION, seq_sort_coreErr4REQUIRES_VIOLATION, seq_sort_coreErr2REQUIRES_VIOLATION, seq_sort_coreErr14ASSERT_VIOLATIONMEMORY_FREE, seq_sort_coreErr3REQUIRES_VIOLATION, seq_sort_coreErr6REQUIRES_VIOLATION, seq_sort_coreErr7REQUIRES_VIOLATION, seq_sort_coreErr5REQUIRES_VIOLATION, seq_sort_coreErr9REQUIRES_VIOLATION, seq_sort_coreErr12ASSERT_VIOLATIONMEMORY_FREE, seq_sort_coreErr13ASSERT_VIOLATIONMEMORY_FREE, seq_sort_coreErr8REQUIRES_VIOLATION, seq_sort_coreErr0REQUIRES_VIOLATION, seq_sort_coreErr10REQUIRES_VIOLATION, seq_sort_coreErr1REQUIRES_VIOLATION, seq_sort_coreErr11REQUIRES_VIOLATION, inspect_beforeErr16REQUIRES_VIOLATION, inspect_beforeErr5REQUIRES_VIOLATION, inspect_beforeErr7REQUIRES_VIOLATION, inspect_beforeErr6REQUIRES_VIOLATION, inspect_beforeErr17REQUIRES_VIOLATION, inspect_beforeErr3REQUIRES_VIOLATION, inspect_beforeErr2REQUIRES_VIOLATION, inspect_beforeErr13REQUIRES_VIOLATION, inspect_beforeErr4REQUIRES_VIOLATION, inspect_beforeErr15REQUIRES_VIOLATION, inspect_beforeErr14REQUIRES_VIOLATION, inspect_beforeErr0REQUIRES_VIOLATION, inspect_beforeErr11REQUIRES_VIOLATION, inspect_beforeErr10REQUIRES_VIOLATION, inspect_beforeErr12REQUIRES_VIOLATION, inspect_beforeErr1REQUIRES_VIOLATION, inspect_beforeErr8REQUIRES_VIOLATION, inspect_beforeErr19REQUIRES_VIOLATION, inspect_beforeErr18REQUIRES_VIOLATION, inspect_beforeErr9REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr9REQUIRES_VIOLATION, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr19ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17ASSERT_VIOLATIONMEMORY_FREE, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr18ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr20ENSURES_VIOLATIONMEMORY_LEAK, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, inspect_afterErr2REQUIRES_VIOLATION, inspect_afterErr3REQUIRES_VIOLATION, inspect_afterErr8REQUIRES_VIOLATION, inspect_afterErr9REQUIRES_VIOLATION, inspect_afterErr4REQUIRES_VIOLATION, inspect_afterErr5REQUIRES_VIOLATION, inspect_afterErr10REQUIRES_VIOLATION, inspect_afterErr0REQUIRES_VIOLATION, inspect_afterErr11REQUIRES_VIOLATION, inspect_afterErr1REQUIRES_VIOLATION, inspect_afterErr6REQUIRES_VIOLATION, inspect_afterErr7REQUIRES_VIOLATION]=== [2020-10-20 06:18:15,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:18:15,032 INFO L82 PathProgramCache]: Analyzing trace with hash 214093637, now seen corresponding path program 1 times [2020-10-20 06:18:15,032 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:18:15,032 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053689859] [2020-10-20 06:18:15,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:18:15,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:18:15,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:18:15,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:18:15,089 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 06:18:15,090 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053689859] [2020-10-20 06:18:15,090 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:18:15,090 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 06:18:15,090 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004619277] [2020-10-20 06:18:15,091 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 06:18:15,091 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:18:15,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 06:18:15,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 06:18:15,092 INFO L87 Difference]: Start difference. First operand 277 states and 303 transitions. Second operand 4 states. [2020-10-20 06:18:15,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:18:15,879 INFO L93 Difference]: Finished difference Result 332 states and 369 transitions. [2020-10-20 06:18:15,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 06:18:15,882 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-10-20 06:18:15,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:18:15,885 INFO L225 Difference]: With dead ends: 332 [2020-10-20 06:18:15,885 INFO L226 Difference]: Without dead ends: 332 [2020-10-20 06:18:15,886 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 06:18:15,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2020-10-20 06:18:15,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 275. [2020-10-20 06:18:15,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 275 states. [2020-10-20 06:18:15,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 301 transitions. [2020-10-20 06:18:15,922 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 301 transitions. Word has length 10 [2020-10-20 06:18:15,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:18:15,922 INFO L481 AbstractCegarLoop]: Abstraction has 275 states and 301 transitions. [2020-10-20 06:18:15,922 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 06:18:15,922 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 301 transitions. [2020-10-20 06:18:15,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-20 06:18:15,923 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:18:15,923 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:18:15,923 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-20 06:18:15,924 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, merge_pairErr14REQUIRES_VIOLATION, merge_pairErr4REQUIRES_VIOLATION, merge_pairErr15REQUIRES_VIOLATION, merge_pairErr2REQUIRES_VIOLATION, merge_pairErr13REQUIRES_VIOLATION, merge_pairErr3REQUIRES_VIOLATION, merge_pairErr1REQUIRES_VIOLATION, merge_pairErr12REQUIRES_VIOLATION, merge_pairErr10REQUIRES_VIOLATION, merge_pairErr21REQUIRES_VIOLATION, merge_pairErr0REQUIRES_VIOLATION, merge_pairErr11REQUIRES_VIOLATION, merge_pairErr9REQUIRES_VIOLATION, merge_pairErr20REQUIRES_VIOLATION, merge_pairErr18REQUIRES_VIOLATION, merge_pairErr8REQUIRES_VIOLATION, merge_pairErr19REQUIRES_VIOLATION, merge_pairErr6REQUIRES_VIOLATION, merge_pairErr17REQUIRES_VIOLATION, merge_pairErr7REQUIRES_VIOLATION, merge_pairErr5REQUIRES_VIOLATION, merge_pairErr16REQUIRES_VIOLATION, merge_single_nodeErr9REQUIRES_VIOLATION, merge_single_nodeErr8REQUIRES_VIOLATION, merge_single_nodeErr12REQUIRES_VIOLATION, merge_single_nodeErr1REQUIRES_VIOLATION, merge_single_nodeErr11REQUIRES_VIOLATION, merge_single_nodeErr0REQUIRES_VIOLATION, merge_single_nodeErr10REQUIRES_VIOLATION, merge_single_nodeErr4REQUIRES_VIOLATION, merge_single_nodeErr3REQUIRES_VIOLATION, merge_single_nodeErr13REQUIRES_VIOLATION, merge_single_nodeErr2REQUIRES_VIOLATION, merge_single_nodeErr7REQUIRES_VIOLATION, merge_single_nodeErr6REQUIRES_VIOLATION, merge_single_nodeErr5REQUIRES_VIOLATION, seq_sort_coreErr4REQUIRES_VIOLATION, seq_sort_coreErr2REQUIRES_VIOLATION, seq_sort_coreErr14ASSERT_VIOLATIONMEMORY_FREE, seq_sort_coreErr3REQUIRES_VIOLATION, seq_sort_coreErr6REQUIRES_VIOLATION, seq_sort_coreErr7REQUIRES_VIOLATION, seq_sort_coreErr5REQUIRES_VIOLATION, seq_sort_coreErr9REQUIRES_VIOLATION, seq_sort_coreErr12ASSERT_VIOLATIONMEMORY_FREE, seq_sort_coreErr13ASSERT_VIOLATIONMEMORY_FREE, seq_sort_coreErr8REQUIRES_VIOLATION, seq_sort_coreErr0REQUIRES_VIOLATION, seq_sort_coreErr10REQUIRES_VIOLATION, seq_sort_coreErr1REQUIRES_VIOLATION, seq_sort_coreErr11REQUIRES_VIOLATION, inspect_beforeErr16REQUIRES_VIOLATION, inspect_beforeErr5REQUIRES_VIOLATION, inspect_beforeErr7REQUIRES_VIOLATION, inspect_beforeErr6REQUIRES_VIOLATION, inspect_beforeErr17REQUIRES_VIOLATION, inspect_beforeErr3REQUIRES_VIOLATION, inspect_beforeErr2REQUIRES_VIOLATION, inspect_beforeErr13REQUIRES_VIOLATION, inspect_beforeErr4REQUIRES_VIOLATION, inspect_beforeErr15REQUIRES_VIOLATION, inspect_beforeErr14REQUIRES_VIOLATION, inspect_beforeErr0REQUIRES_VIOLATION, inspect_beforeErr11REQUIRES_VIOLATION, inspect_beforeErr10REQUIRES_VIOLATION, inspect_beforeErr12REQUIRES_VIOLATION, inspect_beforeErr1REQUIRES_VIOLATION, inspect_beforeErr8REQUIRES_VIOLATION, inspect_beforeErr19REQUIRES_VIOLATION, inspect_beforeErr18REQUIRES_VIOLATION, inspect_beforeErr9REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr9REQUIRES_VIOLATION, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr19ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17ASSERT_VIOLATIONMEMORY_FREE, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr18ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr20ENSURES_VIOLATIONMEMORY_LEAK, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, inspect_afterErr2REQUIRES_VIOLATION, inspect_afterErr3REQUIRES_VIOLATION, inspect_afterErr8REQUIRES_VIOLATION, inspect_afterErr9REQUIRES_VIOLATION, inspect_afterErr4REQUIRES_VIOLATION, inspect_afterErr5REQUIRES_VIOLATION, inspect_afterErr10REQUIRES_VIOLATION, inspect_afterErr0REQUIRES_VIOLATION, inspect_afterErr11REQUIRES_VIOLATION, inspect_afterErr1REQUIRES_VIOLATION, inspect_afterErr6REQUIRES_VIOLATION, inspect_afterErr7REQUIRES_VIOLATION]=== [2020-10-20 06:18:15,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:18:15,924 INFO L82 PathProgramCache]: Analyzing trace with hash 360940191, now seen corresponding path program 1 times [2020-10-20 06:18:15,924 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:18:15,925 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103552484] [2020-10-20 06:18:15,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:18:15,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:18:16,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:18:16,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:18:16,040 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 06:18:16,041 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103552484] [2020-10-20 06:18:16,041 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:18:16,041 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 06:18:16,042 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500090347] [2020-10-20 06:18:16,042 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 06:18:16,042 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:18:16,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 06:18:16,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 06:18:16,043 INFO L87 Difference]: Start difference. First operand 275 states and 301 transitions. Second operand 4 states. [2020-10-20 06:18:16,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:18:16,773 INFO L93 Difference]: Finished difference Result 310 states and 337 transitions. [2020-10-20 06:18:16,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 06:18:16,774 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-10-20 06:18:16,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:18:16,778 INFO L225 Difference]: With dead ends: 310 [2020-10-20 06:18:16,779 INFO L226 Difference]: Without dead ends: 309 [2020-10-20 06:18:16,779 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 06:18:16,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2020-10-20 06:18:16,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 274. [2020-10-20 06:18:16,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 274 states. [2020-10-20 06:18:16,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 299 transitions. [2020-10-20 06:18:16,793 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 299 transitions. Word has length 14 [2020-10-20 06:18:16,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:18:16,793 INFO L481 AbstractCegarLoop]: Abstraction has 274 states and 299 transitions. [2020-10-20 06:18:16,793 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 06:18:16,794 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 299 transitions. [2020-10-20 06:18:16,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-20 06:18:16,794 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:18:16,795 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:18:16,795 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-20 06:18:16,795 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, merge_pairErr14REQUIRES_VIOLATION, merge_pairErr4REQUIRES_VIOLATION, merge_pairErr15REQUIRES_VIOLATION, merge_pairErr2REQUIRES_VIOLATION, merge_pairErr13REQUIRES_VIOLATION, merge_pairErr3REQUIRES_VIOLATION, merge_pairErr1REQUIRES_VIOLATION, merge_pairErr12REQUIRES_VIOLATION, merge_pairErr10REQUIRES_VIOLATION, merge_pairErr21REQUIRES_VIOLATION, merge_pairErr0REQUIRES_VIOLATION, merge_pairErr11REQUIRES_VIOLATION, merge_pairErr9REQUIRES_VIOLATION, merge_pairErr20REQUIRES_VIOLATION, merge_pairErr18REQUIRES_VIOLATION, merge_pairErr8REQUIRES_VIOLATION, merge_pairErr19REQUIRES_VIOLATION, merge_pairErr6REQUIRES_VIOLATION, merge_pairErr17REQUIRES_VIOLATION, merge_pairErr7REQUIRES_VIOLATION, merge_pairErr5REQUIRES_VIOLATION, merge_pairErr16REQUIRES_VIOLATION, merge_single_nodeErr9REQUIRES_VIOLATION, merge_single_nodeErr8REQUIRES_VIOLATION, merge_single_nodeErr12REQUIRES_VIOLATION, merge_single_nodeErr1REQUIRES_VIOLATION, merge_single_nodeErr11REQUIRES_VIOLATION, merge_single_nodeErr0REQUIRES_VIOLATION, merge_single_nodeErr10REQUIRES_VIOLATION, merge_single_nodeErr4REQUIRES_VIOLATION, merge_single_nodeErr3REQUIRES_VIOLATION, merge_single_nodeErr13REQUIRES_VIOLATION, merge_single_nodeErr2REQUIRES_VIOLATION, merge_single_nodeErr7REQUIRES_VIOLATION, merge_single_nodeErr6REQUIRES_VIOLATION, merge_single_nodeErr5REQUIRES_VIOLATION, seq_sort_coreErr4REQUIRES_VIOLATION, seq_sort_coreErr2REQUIRES_VIOLATION, seq_sort_coreErr14ASSERT_VIOLATIONMEMORY_FREE, seq_sort_coreErr3REQUIRES_VIOLATION, seq_sort_coreErr6REQUIRES_VIOLATION, seq_sort_coreErr7REQUIRES_VIOLATION, seq_sort_coreErr5REQUIRES_VIOLATION, seq_sort_coreErr9REQUIRES_VIOLATION, seq_sort_coreErr12ASSERT_VIOLATIONMEMORY_FREE, seq_sort_coreErr13ASSERT_VIOLATIONMEMORY_FREE, seq_sort_coreErr8REQUIRES_VIOLATION, seq_sort_coreErr0REQUIRES_VIOLATION, seq_sort_coreErr10REQUIRES_VIOLATION, seq_sort_coreErr1REQUIRES_VIOLATION, seq_sort_coreErr11REQUIRES_VIOLATION, inspect_beforeErr16REQUIRES_VIOLATION, inspect_beforeErr5REQUIRES_VIOLATION, inspect_beforeErr7REQUIRES_VIOLATION, inspect_beforeErr6REQUIRES_VIOLATION, inspect_beforeErr17REQUIRES_VIOLATION, inspect_beforeErr3REQUIRES_VIOLATION, inspect_beforeErr2REQUIRES_VIOLATION, inspect_beforeErr13REQUIRES_VIOLATION, inspect_beforeErr4REQUIRES_VIOLATION, inspect_beforeErr15REQUIRES_VIOLATION, inspect_beforeErr14REQUIRES_VIOLATION, inspect_beforeErr0REQUIRES_VIOLATION, inspect_beforeErr11REQUIRES_VIOLATION, inspect_beforeErr10REQUIRES_VIOLATION, inspect_beforeErr12REQUIRES_VIOLATION, inspect_beforeErr1REQUIRES_VIOLATION, inspect_beforeErr8REQUIRES_VIOLATION, inspect_beforeErr19REQUIRES_VIOLATION, inspect_beforeErr18REQUIRES_VIOLATION, inspect_beforeErr9REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr9REQUIRES_VIOLATION, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr19ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17ASSERT_VIOLATIONMEMORY_FREE, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr18ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr20ENSURES_VIOLATIONMEMORY_LEAK, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, inspect_afterErr2REQUIRES_VIOLATION, inspect_afterErr3REQUIRES_VIOLATION, inspect_afterErr8REQUIRES_VIOLATION, inspect_afterErr9REQUIRES_VIOLATION, inspect_afterErr4REQUIRES_VIOLATION, inspect_afterErr5REQUIRES_VIOLATION, inspect_afterErr10REQUIRES_VIOLATION, inspect_afterErr0REQUIRES_VIOLATION, inspect_afterErr11REQUIRES_VIOLATION, inspect_afterErr1REQUIRES_VIOLATION, inspect_afterErr6REQUIRES_VIOLATION, inspect_afterErr7REQUIRES_VIOLATION]=== [2020-10-20 06:18:16,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:18:16,796 INFO L82 PathProgramCache]: Analyzing trace with hash 1683080499, now seen corresponding path program 1 times [2020-10-20 06:18:16,796 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:18:16,797 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747946005] [2020-10-20 06:18:16,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:18:16,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:18:16,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:18:16,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:18:16,869 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 06:18:16,869 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747946005] [2020-10-20 06:18:16,870 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:18:16,870 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 06:18:16,870 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812921196] [2020-10-20 06:18:16,871 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 06:18:16,871 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:18:16,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 06:18:16,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 06:18:16,872 INFO L87 Difference]: Start difference. First operand 274 states and 299 transitions. Second operand 4 states. [2020-10-20 06:18:17,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:18:17,511 INFO L93 Difference]: Finished difference Result 316 states and 347 transitions. [2020-10-20 06:18:17,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 06:18:17,512 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-10-20 06:18:17,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:18:17,514 INFO L225 Difference]: With dead ends: 316 [2020-10-20 06:18:17,515 INFO L226 Difference]: Without dead ends: 316 [2020-10-20 06:18:17,516 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 06:18:17,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2020-10-20 06:18:17,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 272. [2020-10-20 06:18:17,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 272 states. [2020-10-20 06:18:17,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 297 transitions. [2020-10-20 06:18:17,537 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 297 transitions. Word has length 15 [2020-10-20 06:18:17,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:18:17,537 INFO L481 AbstractCegarLoop]: Abstraction has 272 states and 297 transitions. [2020-10-20 06:18:17,538 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 06:18:17,538 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 297 transitions. [2020-10-20 06:18:17,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-20 06:18:17,538 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:18:17,539 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:18:17,539 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-20 06:18:17,539 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, merge_pairErr14REQUIRES_VIOLATION, merge_pairErr4REQUIRES_VIOLATION, merge_pairErr15REQUIRES_VIOLATION, merge_pairErr2REQUIRES_VIOLATION, merge_pairErr13REQUIRES_VIOLATION, merge_pairErr3REQUIRES_VIOLATION, merge_pairErr1REQUIRES_VIOLATION, merge_pairErr12REQUIRES_VIOLATION, merge_pairErr10REQUIRES_VIOLATION, merge_pairErr21REQUIRES_VIOLATION, merge_pairErr0REQUIRES_VIOLATION, merge_pairErr11REQUIRES_VIOLATION, merge_pairErr9REQUIRES_VIOLATION, merge_pairErr20REQUIRES_VIOLATION, merge_pairErr18REQUIRES_VIOLATION, merge_pairErr8REQUIRES_VIOLATION, merge_pairErr19REQUIRES_VIOLATION, merge_pairErr6REQUIRES_VIOLATION, merge_pairErr17REQUIRES_VIOLATION, merge_pairErr7REQUIRES_VIOLATION, merge_pairErr5REQUIRES_VIOLATION, merge_pairErr16REQUIRES_VIOLATION, merge_single_nodeErr9REQUIRES_VIOLATION, merge_single_nodeErr8REQUIRES_VIOLATION, merge_single_nodeErr12REQUIRES_VIOLATION, merge_single_nodeErr1REQUIRES_VIOLATION, merge_single_nodeErr11REQUIRES_VIOLATION, merge_single_nodeErr0REQUIRES_VIOLATION, merge_single_nodeErr10REQUIRES_VIOLATION, merge_single_nodeErr4REQUIRES_VIOLATION, merge_single_nodeErr3REQUIRES_VIOLATION, merge_single_nodeErr13REQUIRES_VIOLATION, merge_single_nodeErr2REQUIRES_VIOLATION, merge_single_nodeErr7REQUIRES_VIOLATION, merge_single_nodeErr6REQUIRES_VIOLATION, merge_single_nodeErr5REQUIRES_VIOLATION, seq_sort_coreErr4REQUIRES_VIOLATION, seq_sort_coreErr2REQUIRES_VIOLATION, seq_sort_coreErr14ASSERT_VIOLATIONMEMORY_FREE, seq_sort_coreErr3REQUIRES_VIOLATION, seq_sort_coreErr6REQUIRES_VIOLATION, seq_sort_coreErr7REQUIRES_VIOLATION, seq_sort_coreErr5REQUIRES_VIOLATION, seq_sort_coreErr9REQUIRES_VIOLATION, seq_sort_coreErr12ASSERT_VIOLATIONMEMORY_FREE, seq_sort_coreErr13ASSERT_VIOLATIONMEMORY_FREE, seq_sort_coreErr8REQUIRES_VIOLATION, seq_sort_coreErr0REQUIRES_VIOLATION, seq_sort_coreErr10REQUIRES_VIOLATION, seq_sort_coreErr1REQUIRES_VIOLATION, seq_sort_coreErr11REQUIRES_VIOLATION, inspect_beforeErr16REQUIRES_VIOLATION, inspect_beforeErr5REQUIRES_VIOLATION, inspect_beforeErr7REQUIRES_VIOLATION, inspect_beforeErr6REQUIRES_VIOLATION, inspect_beforeErr17REQUIRES_VIOLATION, inspect_beforeErr3REQUIRES_VIOLATION, inspect_beforeErr2REQUIRES_VIOLATION, inspect_beforeErr13REQUIRES_VIOLATION, inspect_beforeErr4REQUIRES_VIOLATION, inspect_beforeErr15REQUIRES_VIOLATION, inspect_beforeErr14REQUIRES_VIOLATION, inspect_beforeErr0REQUIRES_VIOLATION, inspect_beforeErr11REQUIRES_VIOLATION, inspect_beforeErr10REQUIRES_VIOLATION, inspect_beforeErr12REQUIRES_VIOLATION, inspect_beforeErr1REQUIRES_VIOLATION, inspect_beforeErr8REQUIRES_VIOLATION, inspect_beforeErr19REQUIRES_VIOLATION, inspect_beforeErr18REQUIRES_VIOLATION, inspect_beforeErr9REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr9REQUIRES_VIOLATION, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr19ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17ASSERT_VIOLATIONMEMORY_FREE, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr18ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr20ENSURES_VIOLATIONMEMORY_LEAK, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, inspect_afterErr2REQUIRES_VIOLATION, inspect_afterErr3REQUIRES_VIOLATION, inspect_afterErr8REQUIRES_VIOLATION, inspect_afterErr9REQUIRES_VIOLATION, inspect_afterErr4REQUIRES_VIOLATION, inspect_afterErr5REQUIRES_VIOLATION, inspect_afterErr10REQUIRES_VIOLATION, inspect_afterErr0REQUIRES_VIOLATION, inspect_afterErr11REQUIRES_VIOLATION, inspect_afterErr1REQUIRES_VIOLATION, inspect_afterErr6REQUIRES_VIOLATION, inspect_afterErr7REQUIRES_VIOLATION]=== [2020-10-20 06:18:17,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:18:17,540 INFO L82 PathProgramCache]: Analyzing trace with hash 1683080500, now seen corresponding path program 1 times [2020-10-20 06:18:17,540 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:18:17,541 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78326566] [2020-10-20 06:18:17,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:18:17,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:18:17,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:18:17,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:18:17,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:18:17,654 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78326566] [2020-10-20 06:18:17,654 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:18:17,654 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 06:18:17,654 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974052672] [2020-10-20 06:18:17,655 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 06:18:17,655 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:18:17,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 06:18:17,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 06:18:17,656 INFO L87 Difference]: Start difference. First operand 272 states and 297 transitions. Second operand 4 states. [2020-10-20 06:18:18,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:18:18,274 INFO L93 Difference]: Finished difference Result 326 states and 358 transitions. [2020-10-20 06:18:18,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 06:18:18,274 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-10-20 06:18:18,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:18:18,278 INFO L225 Difference]: With dead ends: 326 [2020-10-20 06:18:18,278 INFO L226 Difference]: Without dead ends: 326 [2020-10-20 06:18:18,279 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 06:18:18,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2020-10-20 06:18:18,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 270. [2020-10-20 06:18:18,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 270 states. [2020-10-20 06:18:18,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 295 transitions. [2020-10-20 06:18:18,288 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 295 transitions. Word has length 15 [2020-10-20 06:18:18,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:18:18,289 INFO L481 AbstractCegarLoop]: Abstraction has 270 states and 295 transitions. [2020-10-20 06:18:18,289 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 06:18:18,289 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 295 transitions. [2020-10-20 06:18:18,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-20 06:18:18,290 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:18:18,290 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 06:18:18,291 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-20 06:18:18,291 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, merge_pairErr14REQUIRES_VIOLATION, merge_pairErr4REQUIRES_VIOLATION, merge_pairErr15REQUIRES_VIOLATION, merge_pairErr2REQUIRES_VIOLATION, merge_pairErr13REQUIRES_VIOLATION, merge_pairErr3REQUIRES_VIOLATION, merge_pairErr1REQUIRES_VIOLATION, merge_pairErr12REQUIRES_VIOLATION, merge_pairErr10REQUIRES_VIOLATION, merge_pairErr21REQUIRES_VIOLATION, merge_pairErr0REQUIRES_VIOLATION, merge_pairErr11REQUIRES_VIOLATION, merge_pairErr9REQUIRES_VIOLATION, merge_pairErr20REQUIRES_VIOLATION, merge_pairErr18REQUIRES_VIOLATION, merge_pairErr8REQUIRES_VIOLATION, merge_pairErr19REQUIRES_VIOLATION, merge_pairErr6REQUIRES_VIOLATION, merge_pairErr17REQUIRES_VIOLATION, merge_pairErr7REQUIRES_VIOLATION, merge_pairErr5REQUIRES_VIOLATION, merge_pairErr16REQUIRES_VIOLATION, merge_single_nodeErr9REQUIRES_VIOLATION, merge_single_nodeErr8REQUIRES_VIOLATION, merge_single_nodeErr12REQUIRES_VIOLATION, merge_single_nodeErr1REQUIRES_VIOLATION, merge_single_nodeErr11REQUIRES_VIOLATION, merge_single_nodeErr0REQUIRES_VIOLATION, merge_single_nodeErr10REQUIRES_VIOLATION, merge_single_nodeErr4REQUIRES_VIOLATION, merge_single_nodeErr3REQUIRES_VIOLATION, merge_single_nodeErr13REQUIRES_VIOLATION, merge_single_nodeErr2REQUIRES_VIOLATION, merge_single_nodeErr7REQUIRES_VIOLATION, merge_single_nodeErr6REQUIRES_VIOLATION, merge_single_nodeErr5REQUIRES_VIOLATION, seq_sort_coreErr4REQUIRES_VIOLATION, seq_sort_coreErr2REQUIRES_VIOLATION, seq_sort_coreErr14ASSERT_VIOLATIONMEMORY_FREE, seq_sort_coreErr3REQUIRES_VIOLATION, seq_sort_coreErr6REQUIRES_VIOLATION, seq_sort_coreErr7REQUIRES_VIOLATION, seq_sort_coreErr5REQUIRES_VIOLATION, seq_sort_coreErr9REQUIRES_VIOLATION, seq_sort_coreErr12ASSERT_VIOLATIONMEMORY_FREE, seq_sort_coreErr13ASSERT_VIOLATIONMEMORY_FREE, seq_sort_coreErr8REQUIRES_VIOLATION, seq_sort_coreErr0REQUIRES_VIOLATION, seq_sort_coreErr10REQUIRES_VIOLATION, seq_sort_coreErr1REQUIRES_VIOLATION, seq_sort_coreErr11REQUIRES_VIOLATION, inspect_beforeErr16REQUIRES_VIOLATION, inspect_beforeErr5REQUIRES_VIOLATION, inspect_beforeErr7REQUIRES_VIOLATION, inspect_beforeErr6REQUIRES_VIOLATION, inspect_beforeErr17REQUIRES_VIOLATION, inspect_beforeErr3REQUIRES_VIOLATION, inspect_beforeErr2REQUIRES_VIOLATION, inspect_beforeErr13REQUIRES_VIOLATION, inspect_beforeErr4REQUIRES_VIOLATION, inspect_beforeErr15REQUIRES_VIOLATION, inspect_beforeErr14REQUIRES_VIOLATION, inspect_beforeErr0REQUIRES_VIOLATION, inspect_beforeErr11REQUIRES_VIOLATION, inspect_beforeErr10REQUIRES_VIOLATION, inspect_beforeErr12REQUIRES_VIOLATION, inspect_beforeErr1REQUIRES_VIOLATION, inspect_beforeErr8REQUIRES_VIOLATION, inspect_beforeErr19REQUIRES_VIOLATION, inspect_beforeErr18REQUIRES_VIOLATION, inspect_beforeErr9REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr9REQUIRES_VIOLATION, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr19ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17ASSERT_VIOLATIONMEMORY_FREE, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr18ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr20ENSURES_VIOLATIONMEMORY_LEAK, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, inspect_afterErr2REQUIRES_VIOLATION, inspect_afterErr3REQUIRES_VIOLATION, inspect_afterErr8REQUIRES_VIOLATION, inspect_afterErr9REQUIRES_VIOLATION, inspect_afterErr4REQUIRES_VIOLATION, inspect_afterErr5REQUIRES_VIOLATION, inspect_afterErr10REQUIRES_VIOLATION, inspect_afterErr0REQUIRES_VIOLATION, inspect_afterErr11REQUIRES_VIOLATION, inspect_afterErr1REQUIRES_VIOLATION, inspect_afterErr6REQUIRES_VIOLATION, inspect_afterErr7REQUIRES_VIOLATION]=== [2020-10-20 06:18:18,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:18:18,292 INFO L82 PathProgramCache]: Analyzing trace with hash -1200517425, now seen corresponding path program 1 times [2020-10-20 06:18:18,292 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:18:18,292 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870910048] [2020-10-20 06:18:18,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:18:18,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:18:18,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:18:18,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:18:18,351 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 06:18:18,351 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870910048] [2020-10-20 06:18:18,352 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:18:18,352 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-20 06:18:18,352 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82888397] [2020-10-20 06:18:18,353 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 06:18:18,353 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:18:18,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 06:18:18,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 06:18:18,354 INFO L87 Difference]: Start difference. First operand 270 states and 295 transitions. Second operand 5 states. [2020-10-20 06:18:19,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:18:19,069 INFO L93 Difference]: Finished difference Result 329 states and 361 transitions. [2020-10-20 06:18:19,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 06:18:19,069 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-10-20 06:18:19,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:18:19,072 INFO L225 Difference]: With dead ends: 329 [2020-10-20 06:18:19,072 INFO L226 Difference]: Without dead ends: 329 [2020-10-20 06:18:19,072 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-20 06:18:19,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2020-10-20 06:18:19,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 270. [2020-10-20 06:18:19,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 270 states. [2020-10-20 06:18:19,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 294 transitions. [2020-10-20 06:18:19,082 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 294 transitions. Word has length 21 [2020-10-20 06:18:19,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:18:19,082 INFO L481 AbstractCegarLoop]: Abstraction has 270 states and 294 transitions. [2020-10-20 06:18:19,083 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 06:18:19,083 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 294 transitions. [2020-10-20 06:18:19,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-20 06:18:19,084 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:18:19,084 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:18:19,084 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-20 06:18:19,085 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, merge_pairErr14REQUIRES_VIOLATION, merge_pairErr4REQUIRES_VIOLATION, merge_pairErr15REQUIRES_VIOLATION, merge_pairErr2REQUIRES_VIOLATION, merge_pairErr13REQUIRES_VIOLATION, merge_pairErr3REQUIRES_VIOLATION, merge_pairErr1REQUIRES_VIOLATION, merge_pairErr12REQUIRES_VIOLATION, merge_pairErr10REQUIRES_VIOLATION, merge_pairErr21REQUIRES_VIOLATION, merge_pairErr0REQUIRES_VIOLATION, merge_pairErr11REQUIRES_VIOLATION, merge_pairErr9REQUIRES_VIOLATION, merge_pairErr20REQUIRES_VIOLATION, merge_pairErr18REQUIRES_VIOLATION, merge_pairErr8REQUIRES_VIOLATION, merge_pairErr19REQUIRES_VIOLATION, merge_pairErr6REQUIRES_VIOLATION, merge_pairErr17REQUIRES_VIOLATION, merge_pairErr7REQUIRES_VIOLATION, merge_pairErr5REQUIRES_VIOLATION, merge_pairErr16REQUIRES_VIOLATION, merge_single_nodeErr9REQUIRES_VIOLATION, merge_single_nodeErr8REQUIRES_VIOLATION, merge_single_nodeErr12REQUIRES_VIOLATION, merge_single_nodeErr1REQUIRES_VIOLATION, merge_single_nodeErr11REQUIRES_VIOLATION, merge_single_nodeErr0REQUIRES_VIOLATION, merge_single_nodeErr10REQUIRES_VIOLATION, merge_single_nodeErr4REQUIRES_VIOLATION, merge_single_nodeErr3REQUIRES_VIOLATION, merge_single_nodeErr13REQUIRES_VIOLATION, merge_single_nodeErr2REQUIRES_VIOLATION, merge_single_nodeErr7REQUIRES_VIOLATION, merge_single_nodeErr6REQUIRES_VIOLATION, merge_single_nodeErr5REQUIRES_VIOLATION, seq_sort_coreErr4REQUIRES_VIOLATION, seq_sort_coreErr2REQUIRES_VIOLATION, seq_sort_coreErr14ASSERT_VIOLATIONMEMORY_FREE, seq_sort_coreErr3REQUIRES_VIOLATION, seq_sort_coreErr6REQUIRES_VIOLATION, seq_sort_coreErr7REQUIRES_VIOLATION, seq_sort_coreErr5REQUIRES_VIOLATION, seq_sort_coreErr9REQUIRES_VIOLATION, seq_sort_coreErr12ASSERT_VIOLATIONMEMORY_FREE, seq_sort_coreErr13ASSERT_VIOLATIONMEMORY_FREE, seq_sort_coreErr8REQUIRES_VIOLATION, seq_sort_coreErr0REQUIRES_VIOLATION, seq_sort_coreErr10REQUIRES_VIOLATION, seq_sort_coreErr1REQUIRES_VIOLATION, seq_sort_coreErr11REQUIRES_VIOLATION, inspect_beforeErr16REQUIRES_VIOLATION, inspect_beforeErr5REQUIRES_VIOLATION, inspect_beforeErr7REQUIRES_VIOLATION, inspect_beforeErr6REQUIRES_VIOLATION, inspect_beforeErr17REQUIRES_VIOLATION, inspect_beforeErr3REQUIRES_VIOLATION, inspect_beforeErr2REQUIRES_VIOLATION, inspect_beforeErr13REQUIRES_VIOLATION, inspect_beforeErr4REQUIRES_VIOLATION, inspect_beforeErr15REQUIRES_VIOLATION, inspect_beforeErr14REQUIRES_VIOLATION, inspect_beforeErr0REQUIRES_VIOLATION, inspect_beforeErr11REQUIRES_VIOLATION, inspect_beforeErr10REQUIRES_VIOLATION, inspect_beforeErr12REQUIRES_VIOLATION, inspect_beforeErr1REQUIRES_VIOLATION, inspect_beforeErr8REQUIRES_VIOLATION, inspect_beforeErr19REQUIRES_VIOLATION, inspect_beforeErr18REQUIRES_VIOLATION, inspect_beforeErr9REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr9REQUIRES_VIOLATION, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr19ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17ASSERT_VIOLATIONMEMORY_FREE, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr18ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr20ENSURES_VIOLATIONMEMORY_LEAK, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, inspect_afterErr2REQUIRES_VIOLATION, inspect_afterErr3REQUIRES_VIOLATION, inspect_afterErr8REQUIRES_VIOLATION, inspect_afterErr9REQUIRES_VIOLATION, inspect_afterErr4REQUIRES_VIOLATION, inspect_afterErr5REQUIRES_VIOLATION, inspect_afterErr10REQUIRES_VIOLATION, inspect_afterErr0REQUIRES_VIOLATION, inspect_afterErr11REQUIRES_VIOLATION, inspect_afterErr1REQUIRES_VIOLATION, inspect_afterErr6REQUIRES_VIOLATION, inspect_afterErr7REQUIRES_VIOLATION]=== [2020-10-20 06:18:19,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:18:19,085 INFO L82 PathProgramCache]: Analyzing trace with hash -84878857, now seen corresponding path program 1 times [2020-10-20 06:18:19,085 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:18:19,086 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730637096] [2020-10-20 06:18:19,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:18:19,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:18:19,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:18:19,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:18:19,179 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 06:18:19,180 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730637096] [2020-10-20 06:18:19,180 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:18:19,181 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-20 06:18:19,181 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851668167] [2020-10-20 06:18:19,181 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-20 06:18:19,182 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:18:19,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-20 06:18:19,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-20 06:18:19,183 INFO L87 Difference]: Start difference. First operand 270 states and 294 transitions. Second operand 7 states. [2020-10-20 06:18:20,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:18:20,193 INFO L93 Difference]: Finished difference Result 310 states and 341 transitions. [2020-10-20 06:18:20,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-20 06:18:20,194 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 25 [2020-10-20 06:18:20,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:18:20,196 INFO L225 Difference]: With dead ends: 310 [2020-10-20 06:18:20,196 INFO L226 Difference]: Without dead ends: 310 [2020-10-20 06:18:20,197 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-20 06:18:20,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2020-10-20 06:18:20,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 263. [2020-10-20 06:18:20,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 263 states. [2020-10-20 06:18:20,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 289 transitions. [2020-10-20 06:18:20,214 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 289 transitions. Word has length 25 [2020-10-20 06:18:20,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:18:20,215 INFO L481 AbstractCegarLoop]: Abstraction has 263 states and 289 transitions. [2020-10-20 06:18:20,215 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-20 06:18:20,215 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 289 transitions. [2020-10-20 06:18:20,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-20 06:18:20,216 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:18:20,217 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:18:20,218 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-20 06:18:20,219 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, merge_pairErr14REQUIRES_VIOLATION, merge_pairErr4REQUIRES_VIOLATION, merge_pairErr15REQUIRES_VIOLATION, merge_pairErr2REQUIRES_VIOLATION, merge_pairErr13REQUIRES_VIOLATION, merge_pairErr3REQUIRES_VIOLATION, merge_pairErr1REQUIRES_VIOLATION, merge_pairErr12REQUIRES_VIOLATION, merge_pairErr10REQUIRES_VIOLATION, merge_pairErr21REQUIRES_VIOLATION, merge_pairErr0REQUIRES_VIOLATION, merge_pairErr11REQUIRES_VIOLATION, merge_pairErr9REQUIRES_VIOLATION, merge_pairErr20REQUIRES_VIOLATION, merge_pairErr18REQUIRES_VIOLATION, merge_pairErr8REQUIRES_VIOLATION, merge_pairErr19REQUIRES_VIOLATION, merge_pairErr6REQUIRES_VIOLATION, merge_pairErr17REQUIRES_VIOLATION, merge_pairErr7REQUIRES_VIOLATION, merge_pairErr5REQUIRES_VIOLATION, merge_pairErr16REQUIRES_VIOLATION, merge_single_nodeErr9REQUIRES_VIOLATION, merge_single_nodeErr8REQUIRES_VIOLATION, merge_single_nodeErr12REQUIRES_VIOLATION, merge_single_nodeErr1REQUIRES_VIOLATION, merge_single_nodeErr11REQUIRES_VIOLATION, merge_single_nodeErr0REQUIRES_VIOLATION, merge_single_nodeErr10REQUIRES_VIOLATION, merge_single_nodeErr4REQUIRES_VIOLATION, merge_single_nodeErr3REQUIRES_VIOLATION, merge_single_nodeErr13REQUIRES_VIOLATION, merge_single_nodeErr2REQUIRES_VIOLATION, merge_single_nodeErr7REQUIRES_VIOLATION, merge_single_nodeErr6REQUIRES_VIOLATION, merge_single_nodeErr5REQUIRES_VIOLATION, seq_sort_coreErr4REQUIRES_VIOLATION, seq_sort_coreErr2REQUIRES_VIOLATION, seq_sort_coreErr14ASSERT_VIOLATIONMEMORY_FREE, seq_sort_coreErr3REQUIRES_VIOLATION, seq_sort_coreErr6REQUIRES_VIOLATION, seq_sort_coreErr7REQUIRES_VIOLATION, seq_sort_coreErr5REQUIRES_VIOLATION, seq_sort_coreErr9REQUIRES_VIOLATION, seq_sort_coreErr12ASSERT_VIOLATIONMEMORY_FREE, seq_sort_coreErr13ASSERT_VIOLATIONMEMORY_FREE, seq_sort_coreErr8REQUIRES_VIOLATION, seq_sort_coreErr0REQUIRES_VIOLATION, seq_sort_coreErr10REQUIRES_VIOLATION, seq_sort_coreErr1REQUIRES_VIOLATION, seq_sort_coreErr11REQUIRES_VIOLATION, inspect_beforeErr16REQUIRES_VIOLATION, inspect_beforeErr5REQUIRES_VIOLATION, inspect_beforeErr7REQUIRES_VIOLATION, inspect_beforeErr6REQUIRES_VIOLATION, inspect_beforeErr17REQUIRES_VIOLATION, inspect_beforeErr3REQUIRES_VIOLATION, inspect_beforeErr2REQUIRES_VIOLATION, inspect_beforeErr13REQUIRES_VIOLATION, inspect_beforeErr4REQUIRES_VIOLATION, inspect_beforeErr15REQUIRES_VIOLATION, inspect_beforeErr14REQUIRES_VIOLATION, inspect_beforeErr0REQUIRES_VIOLATION, inspect_beforeErr11REQUIRES_VIOLATION, inspect_beforeErr10REQUIRES_VIOLATION, inspect_beforeErr12REQUIRES_VIOLATION, inspect_beforeErr1REQUIRES_VIOLATION, inspect_beforeErr8REQUIRES_VIOLATION, inspect_beforeErr19REQUIRES_VIOLATION, inspect_beforeErr18REQUIRES_VIOLATION, inspect_beforeErr9REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr9REQUIRES_VIOLATION, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr19ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17ASSERT_VIOLATIONMEMORY_FREE, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr18ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr20ENSURES_VIOLATIONMEMORY_LEAK, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, inspect_afterErr2REQUIRES_VIOLATION, inspect_afterErr3REQUIRES_VIOLATION, inspect_afterErr8REQUIRES_VIOLATION, inspect_afterErr9REQUIRES_VIOLATION, inspect_afterErr4REQUIRES_VIOLATION, inspect_afterErr5REQUIRES_VIOLATION, inspect_afterErr10REQUIRES_VIOLATION, inspect_afterErr0REQUIRES_VIOLATION, inspect_afterErr11REQUIRES_VIOLATION, inspect_afterErr1REQUIRES_VIOLATION, inspect_afterErr6REQUIRES_VIOLATION, inspect_afterErr7REQUIRES_VIOLATION]=== [2020-10-20 06:18:20,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:18:20,219 INFO L82 PathProgramCache]: Analyzing trace with hash -84878856, now seen corresponding path program 1 times [2020-10-20 06:18:20,220 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:18:20,220 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094952442] [2020-10-20 06:18:20,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:18:20,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:18:20,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:18:20,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:18:20,362 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 06:18:20,362 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094952442] [2020-10-20 06:18:20,363 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:18:20,363 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-20 06:18:20,363 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231958823] [2020-10-20 06:18:20,364 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-20 06:18:20,364 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:18:20,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-20 06:18:20,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-20 06:18:20,365 INFO L87 Difference]: Start difference. First operand 263 states and 289 transitions. Second operand 7 states. [2020-10-20 06:18:21,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:18:21,561 INFO L93 Difference]: Finished difference Result 386 states and 430 transitions. [2020-10-20 06:18:21,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-20 06:18:21,561 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 25 [2020-10-20 06:18:21,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:18:21,564 INFO L225 Difference]: With dead ends: 386 [2020-10-20 06:18:21,564 INFO L226 Difference]: Without dead ends: 386 [2020-10-20 06:18:21,565 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-20 06:18:21,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2020-10-20 06:18:21,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 291. [2020-10-20 06:18:21,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 291 states. [2020-10-20 06:18:21,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 327 transitions. [2020-10-20 06:18:21,575 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 327 transitions. Word has length 25 [2020-10-20 06:18:21,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:18:21,575 INFO L481 AbstractCegarLoop]: Abstraction has 291 states and 327 transitions. [2020-10-20 06:18:21,576 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-20 06:18:21,576 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 327 transitions. [2020-10-20 06:18:21,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-20 06:18:21,577 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:18:21,577 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:18:21,577 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-20 06:18:21,578 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, merge_pairErr14REQUIRES_VIOLATION, merge_pairErr4REQUIRES_VIOLATION, merge_pairErr15REQUIRES_VIOLATION, merge_pairErr2REQUIRES_VIOLATION, merge_pairErr13REQUIRES_VIOLATION, merge_pairErr3REQUIRES_VIOLATION, merge_pairErr1REQUIRES_VIOLATION, merge_pairErr12REQUIRES_VIOLATION, merge_pairErr10REQUIRES_VIOLATION, merge_pairErr21REQUIRES_VIOLATION, merge_pairErr0REQUIRES_VIOLATION, merge_pairErr11REQUIRES_VIOLATION, merge_pairErr9REQUIRES_VIOLATION, merge_pairErr20REQUIRES_VIOLATION, merge_pairErr18REQUIRES_VIOLATION, merge_pairErr8REQUIRES_VIOLATION, merge_pairErr19REQUIRES_VIOLATION, merge_pairErr6REQUIRES_VIOLATION, merge_pairErr17REQUIRES_VIOLATION, merge_pairErr7REQUIRES_VIOLATION, merge_pairErr5REQUIRES_VIOLATION, merge_pairErr16REQUIRES_VIOLATION, merge_single_nodeErr9REQUIRES_VIOLATION, merge_single_nodeErr8REQUIRES_VIOLATION, merge_single_nodeErr12REQUIRES_VIOLATION, merge_single_nodeErr1REQUIRES_VIOLATION, merge_single_nodeErr11REQUIRES_VIOLATION, merge_single_nodeErr0REQUIRES_VIOLATION, merge_single_nodeErr10REQUIRES_VIOLATION, merge_single_nodeErr4REQUIRES_VIOLATION, merge_single_nodeErr3REQUIRES_VIOLATION, merge_single_nodeErr13REQUIRES_VIOLATION, merge_single_nodeErr2REQUIRES_VIOLATION, merge_single_nodeErr7REQUIRES_VIOLATION, merge_single_nodeErr6REQUIRES_VIOLATION, merge_single_nodeErr5REQUIRES_VIOLATION, seq_sort_coreErr4REQUIRES_VIOLATION, seq_sort_coreErr2REQUIRES_VIOLATION, seq_sort_coreErr14ASSERT_VIOLATIONMEMORY_FREE, seq_sort_coreErr3REQUIRES_VIOLATION, seq_sort_coreErr6REQUIRES_VIOLATION, seq_sort_coreErr7REQUIRES_VIOLATION, seq_sort_coreErr5REQUIRES_VIOLATION, seq_sort_coreErr9REQUIRES_VIOLATION, seq_sort_coreErr12ASSERT_VIOLATIONMEMORY_FREE, seq_sort_coreErr13ASSERT_VIOLATIONMEMORY_FREE, seq_sort_coreErr8REQUIRES_VIOLATION, seq_sort_coreErr0REQUIRES_VIOLATION, seq_sort_coreErr10REQUIRES_VIOLATION, seq_sort_coreErr1REQUIRES_VIOLATION, seq_sort_coreErr11REQUIRES_VIOLATION, inspect_beforeErr16REQUIRES_VIOLATION, inspect_beforeErr5REQUIRES_VIOLATION, inspect_beforeErr7REQUIRES_VIOLATION, inspect_beforeErr6REQUIRES_VIOLATION, inspect_beforeErr17REQUIRES_VIOLATION, inspect_beforeErr3REQUIRES_VIOLATION, inspect_beforeErr2REQUIRES_VIOLATION, inspect_beforeErr13REQUIRES_VIOLATION, inspect_beforeErr4REQUIRES_VIOLATION, inspect_beforeErr15REQUIRES_VIOLATION, inspect_beforeErr14REQUIRES_VIOLATION, inspect_beforeErr0REQUIRES_VIOLATION, inspect_beforeErr11REQUIRES_VIOLATION, inspect_beforeErr10REQUIRES_VIOLATION, inspect_beforeErr12REQUIRES_VIOLATION, inspect_beforeErr1REQUIRES_VIOLATION, inspect_beforeErr8REQUIRES_VIOLATION, inspect_beforeErr19REQUIRES_VIOLATION, inspect_beforeErr18REQUIRES_VIOLATION, inspect_beforeErr9REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr9REQUIRES_VIOLATION, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr19ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17ASSERT_VIOLATIONMEMORY_FREE, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr18ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr20ENSURES_VIOLATIONMEMORY_LEAK, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, inspect_afterErr2REQUIRES_VIOLATION, inspect_afterErr3REQUIRES_VIOLATION, inspect_afterErr8REQUIRES_VIOLATION, inspect_afterErr9REQUIRES_VIOLATION, inspect_afterErr4REQUIRES_VIOLATION, inspect_afterErr5REQUIRES_VIOLATION, inspect_afterErr10REQUIRES_VIOLATION, inspect_afterErr0REQUIRES_VIOLATION, inspect_afterErr11REQUIRES_VIOLATION, inspect_afterErr1REQUIRES_VIOLATION, inspect_afterErr6REQUIRES_VIOLATION, inspect_afterErr7REQUIRES_VIOLATION]=== [2020-10-20 06:18:21,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:18:21,578 INFO L82 PathProgramCache]: Analyzing trace with hash 49803751, now seen corresponding path program 1 times [2020-10-20 06:18:21,578 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:18:21,579 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372587391] [2020-10-20 06:18:21,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:18:21,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:18:21,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:18:21,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:18:21,643 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 06:18:21,643 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372587391] [2020-10-20 06:18:21,643 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:18:21,644 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-20 06:18:21,644 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425872089] [2020-10-20 06:18:21,644 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-20 06:18:21,645 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:18:21,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-20 06:18:21,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-20 06:18:21,645 INFO L87 Difference]: Start difference. First operand 291 states and 327 transitions. Second operand 7 states. [2020-10-20 06:18:22,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:18:22,481 INFO L93 Difference]: Finished difference Result 354 states and 391 transitions. [2020-10-20 06:18:22,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-20 06:18:22,486 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2020-10-20 06:18:22,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:18:22,489 INFO L225 Difference]: With dead ends: 354 [2020-10-20 06:18:22,489 INFO L226 Difference]: Without dead ends: 354 [2020-10-20 06:18:22,490 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-20 06:18:22,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2020-10-20 06:18:22,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 290. [2020-10-20 06:18:22,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 290 states. [2020-10-20 06:18:22,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 323 transitions. [2020-10-20 06:18:22,499 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 323 transitions. Word has length 27 [2020-10-20 06:18:22,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:18:22,499 INFO L481 AbstractCegarLoop]: Abstraction has 290 states and 323 transitions. [2020-10-20 06:18:22,500 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-20 06:18:22,500 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 323 transitions. [2020-10-20 06:18:22,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-20 06:18:22,501 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:18:22,501 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:18:22,501 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-20 06:18:22,502 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, merge_pairErr14REQUIRES_VIOLATION, merge_pairErr4REQUIRES_VIOLATION, merge_pairErr15REQUIRES_VIOLATION, merge_pairErr2REQUIRES_VIOLATION, merge_pairErr13REQUIRES_VIOLATION, merge_pairErr3REQUIRES_VIOLATION, merge_pairErr1REQUIRES_VIOLATION, merge_pairErr12REQUIRES_VIOLATION, merge_pairErr10REQUIRES_VIOLATION, merge_pairErr21REQUIRES_VIOLATION, merge_pairErr0REQUIRES_VIOLATION, merge_pairErr11REQUIRES_VIOLATION, merge_pairErr9REQUIRES_VIOLATION, merge_pairErr20REQUIRES_VIOLATION, merge_pairErr18REQUIRES_VIOLATION, merge_pairErr8REQUIRES_VIOLATION, merge_pairErr19REQUIRES_VIOLATION, merge_pairErr6REQUIRES_VIOLATION, merge_pairErr17REQUIRES_VIOLATION, merge_pairErr7REQUIRES_VIOLATION, merge_pairErr5REQUIRES_VIOLATION, merge_pairErr16REQUIRES_VIOLATION, merge_single_nodeErr9REQUIRES_VIOLATION, merge_single_nodeErr8REQUIRES_VIOLATION, merge_single_nodeErr12REQUIRES_VIOLATION, merge_single_nodeErr1REQUIRES_VIOLATION, merge_single_nodeErr11REQUIRES_VIOLATION, merge_single_nodeErr0REQUIRES_VIOLATION, merge_single_nodeErr10REQUIRES_VIOLATION, merge_single_nodeErr4REQUIRES_VIOLATION, merge_single_nodeErr3REQUIRES_VIOLATION, merge_single_nodeErr13REQUIRES_VIOLATION, merge_single_nodeErr2REQUIRES_VIOLATION, merge_single_nodeErr7REQUIRES_VIOLATION, merge_single_nodeErr6REQUIRES_VIOLATION, merge_single_nodeErr5REQUIRES_VIOLATION, seq_sort_coreErr4REQUIRES_VIOLATION, seq_sort_coreErr2REQUIRES_VIOLATION, seq_sort_coreErr14ASSERT_VIOLATIONMEMORY_FREE, seq_sort_coreErr3REQUIRES_VIOLATION, seq_sort_coreErr6REQUIRES_VIOLATION, seq_sort_coreErr7REQUIRES_VIOLATION, seq_sort_coreErr5REQUIRES_VIOLATION, seq_sort_coreErr9REQUIRES_VIOLATION, seq_sort_coreErr12ASSERT_VIOLATIONMEMORY_FREE, seq_sort_coreErr13ASSERT_VIOLATIONMEMORY_FREE, seq_sort_coreErr8REQUIRES_VIOLATION, seq_sort_coreErr0REQUIRES_VIOLATION, seq_sort_coreErr10REQUIRES_VIOLATION, seq_sort_coreErr1REQUIRES_VIOLATION, seq_sort_coreErr11REQUIRES_VIOLATION, inspect_beforeErr16REQUIRES_VIOLATION, inspect_beforeErr5REQUIRES_VIOLATION, inspect_beforeErr7REQUIRES_VIOLATION, inspect_beforeErr6REQUIRES_VIOLATION, inspect_beforeErr17REQUIRES_VIOLATION, inspect_beforeErr3REQUIRES_VIOLATION, inspect_beforeErr2REQUIRES_VIOLATION, inspect_beforeErr13REQUIRES_VIOLATION, inspect_beforeErr4REQUIRES_VIOLATION, inspect_beforeErr15REQUIRES_VIOLATION, inspect_beforeErr14REQUIRES_VIOLATION, inspect_beforeErr0REQUIRES_VIOLATION, inspect_beforeErr11REQUIRES_VIOLATION, inspect_beforeErr10REQUIRES_VIOLATION, inspect_beforeErr12REQUIRES_VIOLATION, inspect_beforeErr1REQUIRES_VIOLATION, inspect_beforeErr8REQUIRES_VIOLATION, inspect_beforeErr19REQUIRES_VIOLATION, inspect_beforeErr18REQUIRES_VIOLATION, inspect_beforeErr9REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr9REQUIRES_VIOLATION, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr19ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17ASSERT_VIOLATIONMEMORY_FREE, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr18ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr20ENSURES_VIOLATIONMEMORY_LEAK, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, inspect_afterErr2REQUIRES_VIOLATION, inspect_afterErr3REQUIRES_VIOLATION, inspect_afterErr8REQUIRES_VIOLATION, inspect_afterErr9REQUIRES_VIOLATION, inspect_afterErr4REQUIRES_VIOLATION, inspect_afterErr5REQUIRES_VIOLATION, inspect_afterErr10REQUIRES_VIOLATION, inspect_afterErr0REQUIRES_VIOLATION, inspect_afterErr11REQUIRES_VIOLATION, inspect_afterErr1REQUIRES_VIOLATION, inspect_afterErr6REQUIRES_VIOLATION, inspect_afterErr7REQUIRES_VIOLATION]=== [2020-10-20 06:18:22,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:18:22,502 INFO L82 PathProgramCache]: Analyzing trace with hash 823685700, now seen corresponding path program 1 times [2020-10-20 06:18:22,503 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:18:22,503 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175625359] [2020-10-20 06:18:22,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:18:22,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:18:22,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:18:22,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:18:22,586 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-20 06:18:22,587 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175625359] [2020-10-20 06:18:22,587 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:18:22,587 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-20 06:18:22,588 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002250777] [2020-10-20 06:18:22,588 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 06:18:22,588 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:18:22,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 06:18:22,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-20 06:18:22,589 INFO L87 Difference]: Start difference. First operand 290 states and 323 transitions. Second operand 6 states. [2020-10-20 06:18:23,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:18:23,381 INFO L93 Difference]: Finished difference Result 309 states and 343 transitions. [2020-10-20 06:18:23,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 06:18:23,381 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 34 [2020-10-20 06:18:23,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:18:23,384 INFO L225 Difference]: With dead ends: 309 [2020-10-20 06:18:23,384 INFO L226 Difference]: Without dead ends: 309 [2020-10-20 06:18:23,385 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-20 06:18:23,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2020-10-20 06:18:23,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 289. [2020-10-20 06:18:23,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 289 states. [2020-10-20 06:18:23,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 320 transitions. [2020-10-20 06:18:23,393 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 320 transitions. Word has length 34 [2020-10-20 06:18:23,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:18:23,394 INFO L481 AbstractCegarLoop]: Abstraction has 289 states and 320 transitions. [2020-10-20 06:18:23,394 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 06:18:23,394 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 320 transitions. [2020-10-20 06:18:23,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-20 06:18:23,395 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:18:23,396 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:18:23,396 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-20 06:18:23,396 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, merge_pairErr14REQUIRES_VIOLATION, merge_pairErr4REQUIRES_VIOLATION, merge_pairErr15REQUIRES_VIOLATION, merge_pairErr2REQUIRES_VIOLATION, merge_pairErr13REQUIRES_VIOLATION, merge_pairErr3REQUIRES_VIOLATION, merge_pairErr1REQUIRES_VIOLATION, merge_pairErr12REQUIRES_VIOLATION, merge_pairErr10REQUIRES_VIOLATION, merge_pairErr21REQUIRES_VIOLATION, merge_pairErr0REQUIRES_VIOLATION, merge_pairErr11REQUIRES_VIOLATION, merge_pairErr9REQUIRES_VIOLATION, merge_pairErr20REQUIRES_VIOLATION, merge_pairErr18REQUIRES_VIOLATION, merge_pairErr8REQUIRES_VIOLATION, merge_pairErr19REQUIRES_VIOLATION, merge_pairErr6REQUIRES_VIOLATION, merge_pairErr17REQUIRES_VIOLATION, merge_pairErr7REQUIRES_VIOLATION, merge_pairErr5REQUIRES_VIOLATION, merge_pairErr16REQUIRES_VIOLATION, merge_single_nodeErr9REQUIRES_VIOLATION, merge_single_nodeErr8REQUIRES_VIOLATION, merge_single_nodeErr12REQUIRES_VIOLATION, merge_single_nodeErr1REQUIRES_VIOLATION, merge_single_nodeErr11REQUIRES_VIOLATION, merge_single_nodeErr0REQUIRES_VIOLATION, merge_single_nodeErr10REQUIRES_VIOLATION, merge_single_nodeErr4REQUIRES_VIOLATION, merge_single_nodeErr3REQUIRES_VIOLATION, merge_single_nodeErr13REQUIRES_VIOLATION, merge_single_nodeErr2REQUIRES_VIOLATION, merge_single_nodeErr7REQUIRES_VIOLATION, merge_single_nodeErr6REQUIRES_VIOLATION, merge_single_nodeErr5REQUIRES_VIOLATION, seq_sort_coreErr4REQUIRES_VIOLATION, seq_sort_coreErr2REQUIRES_VIOLATION, seq_sort_coreErr14ASSERT_VIOLATIONMEMORY_FREE, seq_sort_coreErr3REQUIRES_VIOLATION, seq_sort_coreErr6REQUIRES_VIOLATION, seq_sort_coreErr7REQUIRES_VIOLATION, seq_sort_coreErr5REQUIRES_VIOLATION, seq_sort_coreErr9REQUIRES_VIOLATION, seq_sort_coreErr12ASSERT_VIOLATIONMEMORY_FREE, seq_sort_coreErr13ASSERT_VIOLATIONMEMORY_FREE, seq_sort_coreErr8REQUIRES_VIOLATION, seq_sort_coreErr0REQUIRES_VIOLATION, seq_sort_coreErr10REQUIRES_VIOLATION, seq_sort_coreErr1REQUIRES_VIOLATION, seq_sort_coreErr11REQUIRES_VIOLATION, inspect_beforeErr16REQUIRES_VIOLATION, inspect_beforeErr5REQUIRES_VIOLATION, inspect_beforeErr7REQUIRES_VIOLATION, inspect_beforeErr6REQUIRES_VIOLATION, inspect_beforeErr17REQUIRES_VIOLATION, inspect_beforeErr3REQUIRES_VIOLATION, inspect_beforeErr2REQUIRES_VIOLATION, inspect_beforeErr13REQUIRES_VIOLATION, inspect_beforeErr4REQUIRES_VIOLATION, inspect_beforeErr15REQUIRES_VIOLATION, inspect_beforeErr14REQUIRES_VIOLATION, inspect_beforeErr0REQUIRES_VIOLATION, inspect_beforeErr11REQUIRES_VIOLATION, inspect_beforeErr10REQUIRES_VIOLATION, inspect_beforeErr12REQUIRES_VIOLATION, inspect_beforeErr1REQUIRES_VIOLATION, inspect_beforeErr8REQUIRES_VIOLATION, inspect_beforeErr19REQUIRES_VIOLATION, inspect_beforeErr18REQUIRES_VIOLATION, inspect_beforeErr9REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr9REQUIRES_VIOLATION, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr19ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17ASSERT_VIOLATIONMEMORY_FREE, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr18ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr20ENSURES_VIOLATIONMEMORY_LEAK, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, inspect_afterErr2REQUIRES_VIOLATION, inspect_afterErr3REQUIRES_VIOLATION, inspect_afterErr8REQUIRES_VIOLATION, inspect_afterErr9REQUIRES_VIOLATION, inspect_afterErr4REQUIRES_VIOLATION, inspect_afterErr5REQUIRES_VIOLATION, inspect_afterErr10REQUIRES_VIOLATION, inspect_afterErr0REQUIRES_VIOLATION, inspect_afterErr11REQUIRES_VIOLATION, inspect_afterErr1REQUIRES_VIOLATION, inspect_afterErr6REQUIRES_VIOLATION, inspect_afterErr7REQUIRES_VIOLATION]=== [2020-10-20 06:18:23,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:18:23,397 INFO L82 PathProgramCache]: Analyzing trace with hash -222097266, now seen corresponding path program 1 times [2020-10-20 06:18:23,397 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:18:23,397 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095417268] [2020-10-20 06:18:23,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:18:23,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:18:23,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:18:23,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:18:23,471 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-20 06:18:23,471 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095417268] [2020-10-20 06:18:23,472 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:18:23,472 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-20 06:18:23,472 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517072110] [2020-10-20 06:18:23,472 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 06:18:23,473 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:18:23,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 06:18:23,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-20 06:18:23,474 INFO L87 Difference]: Start difference. First operand 289 states and 320 transitions. Second operand 6 states. [2020-10-20 06:18:24,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:18:24,257 INFO L93 Difference]: Finished difference Result 308 states and 340 transitions. [2020-10-20 06:18:24,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 06:18:24,257 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 34 [2020-10-20 06:18:24,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:18:24,260 INFO L225 Difference]: With dead ends: 308 [2020-10-20 06:18:24,261 INFO L226 Difference]: Without dead ends: 308 [2020-10-20 06:18:24,261 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-20 06:18:24,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2020-10-20 06:18:24,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 288. [2020-10-20 06:18:24,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 288 states. [2020-10-20 06:18:24,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 317 transitions. [2020-10-20 06:18:24,269 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 317 transitions. Word has length 34 [2020-10-20 06:18:24,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:18:24,270 INFO L481 AbstractCegarLoop]: Abstraction has 288 states and 317 transitions. [2020-10-20 06:18:24,270 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 06:18:24,270 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 317 transitions. [2020-10-20 06:18:24,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-20 06:18:24,271 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:18:24,272 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:18:24,272 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-20 06:18:24,272 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, merge_pairErr14REQUIRES_VIOLATION, merge_pairErr4REQUIRES_VIOLATION, merge_pairErr15REQUIRES_VIOLATION, merge_pairErr2REQUIRES_VIOLATION, merge_pairErr13REQUIRES_VIOLATION, merge_pairErr3REQUIRES_VIOLATION, merge_pairErr1REQUIRES_VIOLATION, merge_pairErr12REQUIRES_VIOLATION, merge_pairErr10REQUIRES_VIOLATION, merge_pairErr21REQUIRES_VIOLATION, merge_pairErr0REQUIRES_VIOLATION, merge_pairErr11REQUIRES_VIOLATION, merge_pairErr9REQUIRES_VIOLATION, merge_pairErr20REQUIRES_VIOLATION, merge_pairErr18REQUIRES_VIOLATION, merge_pairErr8REQUIRES_VIOLATION, merge_pairErr19REQUIRES_VIOLATION, merge_pairErr6REQUIRES_VIOLATION, merge_pairErr17REQUIRES_VIOLATION, merge_pairErr7REQUIRES_VIOLATION, merge_pairErr5REQUIRES_VIOLATION, merge_pairErr16REQUIRES_VIOLATION, merge_single_nodeErr9REQUIRES_VIOLATION, merge_single_nodeErr8REQUIRES_VIOLATION, merge_single_nodeErr12REQUIRES_VIOLATION, merge_single_nodeErr1REQUIRES_VIOLATION, merge_single_nodeErr11REQUIRES_VIOLATION, merge_single_nodeErr0REQUIRES_VIOLATION, merge_single_nodeErr10REQUIRES_VIOLATION, merge_single_nodeErr4REQUIRES_VIOLATION, merge_single_nodeErr3REQUIRES_VIOLATION, merge_single_nodeErr13REQUIRES_VIOLATION, merge_single_nodeErr2REQUIRES_VIOLATION, merge_single_nodeErr7REQUIRES_VIOLATION, merge_single_nodeErr6REQUIRES_VIOLATION, merge_single_nodeErr5REQUIRES_VIOLATION, seq_sort_coreErr4REQUIRES_VIOLATION, seq_sort_coreErr2REQUIRES_VIOLATION, seq_sort_coreErr14ASSERT_VIOLATIONMEMORY_FREE, seq_sort_coreErr3REQUIRES_VIOLATION, seq_sort_coreErr6REQUIRES_VIOLATION, seq_sort_coreErr7REQUIRES_VIOLATION, seq_sort_coreErr5REQUIRES_VIOLATION, seq_sort_coreErr9REQUIRES_VIOLATION, seq_sort_coreErr12ASSERT_VIOLATIONMEMORY_FREE, seq_sort_coreErr13ASSERT_VIOLATIONMEMORY_FREE, seq_sort_coreErr8REQUIRES_VIOLATION, seq_sort_coreErr0REQUIRES_VIOLATION, seq_sort_coreErr10REQUIRES_VIOLATION, seq_sort_coreErr1REQUIRES_VIOLATION, seq_sort_coreErr11REQUIRES_VIOLATION, inspect_beforeErr16REQUIRES_VIOLATION, inspect_beforeErr5REQUIRES_VIOLATION, inspect_beforeErr7REQUIRES_VIOLATION, inspect_beforeErr6REQUIRES_VIOLATION, inspect_beforeErr17REQUIRES_VIOLATION, inspect_beforeErr3REQUIRES_VIOLATION, inspect_beforeErr2REQUIRES_VIOLATION, inspect_beforeErr13REQUIRES_VIOLATION, inspect_beforeErr4REQUIRES_VIOLATION, inspect_beforeErr15REQUIRES_VIOLATION, inspect_beforeErr14REQUIRES_VIOLATION, inspect_beforeErr0REQUIRES_VIOLATION, inspect_beforeErr11REQUIRES_VIOLATION, inspect_beforeErr10REQUIRES_VIOLATION, inspect_beforeErr12REQUIRES_VIOLATION, inspect_beforeErr1REQUIRES_VIOLATION, inspect_beforeErr8REQUIRES_VIOLATION, inspect_beforeErr19REQUIRES_VIOLATION, inspect_beforeErr18REQUIRES_VIOLATION, inspect_beforeErr9REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr9REQUIRES_VIOLATION, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr19ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17ASSERT_VIOLATIONMEMORY_FREE, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr18ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr20ENSURES_VIOLATIONMEMORY_LEAK, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, inspect_afterErr2REQUIRES_VIOLATION, inspect_afterErr3REQUIRES_VIOLATION, inspect_afterErr8REQUIRES_VIOLATION, inspect_afterErr9REQUIRES_VIOLATION, inspect_afterErr4REQUIRES_VIOLATION, inspect_afterErr5REQUIRES_VIOLATION, inspect_afterErr10REQUIRES_VIOLATION, inspect_afterErr0REQUIRES_VIOLATION, inspect_afterErr11REQUIRES_VIOLATION, inspect_afterErr1REQUIRES_VIOLATION, inspect_afterErr6REQUIRES_VIOLATION, inspect_afterErr7REQUIRES_VIOLATION]=== [2020-10-20 06:18:24,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:18:24,273 INFO L82 PathProgramCache]: Analyzing trace with hash 907327601, now seen corresponding path program 1 times [2020-10-20 06:18:24,273 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:18:24,273 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714183187] [2020-10-20 06:18:24,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:18:24,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:18:24,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:18:24,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:18:24,392 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 06:18:24,393 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714183187] [2020-10-20 06:18:24,393 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:18:24,393 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-20 06:18:24,393 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147069183] [2020-10-20 06:18:24,394 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-20 06:18:24,394 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:18:24,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-20 06:18:24,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-20 06:18:24,395 INFO L87 Difference]: Start difference. First operand 288 states and 317 transitions. Second operand 9 states. [2020-10-20 06:18:25,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:18:25,546 INFO L93 Difference]: Finished difference Result 343 states and 375 transitions. [2020-10-20 06:18:25,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-20 06:18:25,546 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 37 [2020-10-20 06:18:25,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:18:25,549 INFO L225 Difference]: With dead ends: 343 [2020-10-20 06:18:25,549 INFO L226 Difference]: Without dead ends: 343 [2020-10-20 06:18:25,549 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2020-10-20 06:18:25,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2020-10-20 06:18:25,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 288. [2020-10-20 06:18:25,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 288 states. [2020-10-20 06:18:25,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 316 transitions. [2020-10-20 06:18:25,560 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 316 transitions. Word has length 37 [2020-10-20 06:18:25,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:18:25,561 INFO L481 AbstractCegarLoop]: Abstraction has 288 states and 316 transitions. [2020-10-20 06:18:25,561 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-20 06:18:25,561 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 316 transitions. [2020-10-20 06:18:25,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-20 06:18:25,566 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:18:25,566 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:18:25,566 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-20 06:18:25,566 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, merge_pairErr14REQUIRES_VIOLATION, merge_pairErr4REQUIRES_VIOLATION, merge_pairErr15REQUIRES_VIOLATION, merge_pairErr2REQUIRES_VIOLATION, merge_pairErr13REQUIRES_VIOLATION, merge_pairErr3REQUIRES_VIOLATION, merge_pairErr1REQUIRES_VIOLATION, merge_pairErr12REQUIRES_VIOLATION, merge_pairErr10REQUIRES_VIOLATION, merge_pairErr21REQUIRES_VIOLATION, merge_pairErr0REQUIRES_VIOLATION, merge_pairErr11REQUIRES_VIOLATION, merge_pairErr9REQUIRES_VIOLATION, merge_pairErr20REQUIRES_VIOLATION, merge_pairErr18REQUIRES_VIOLATION, merge_pairErr8REQUIRES_VIOLATION, merge_pairErr19REQUIRES_VIOLATION, merge_pairErr6REQUIRES_VIOLATION, merge_pairErr17REQUIRES_VIOLATION, merge_pairErr7REQUIRES_VIOLATION, merge_pairErr5REQUIRES_VIOLATION, merge_pairErr16REQUIRES_VIOLATION, merge_single_nodeErr9REQUIRES_VIOLATION, merge_single_nodeErr8REQUIRES_VIOLATION, merge_single_nodeErr12REQUIRES_VIOLATION, merge_single_nodeErr1REQUIRES_VIOLATION, merge_single_nodeErr11REQUIRES_VIOLATION, merge_single_nodeErr0REQUIRES_VIOLATION, merge_single_nodeErr10REQUIRES_VIOLATION, merge_single_nodeErr4REQUIRES_VIOLATION, merge_single_nodeErr3REQUIRES_VIOLATION, merge_single_nodeErr13REQUIRES_VIOLATION, merge_single_nodeErr2REQUIRES_VIOLATION, merge_single_nodeErr7REQUIRES_VIOLATION, merge_single_nodeErr6REQUIRES_VIOLATION, merge_single_nodeErr5REQUIRES_VIOLATION, seq_sort_coreErr4REQUIRES_VIOLATION, seq_sort_coreErr2REQUIRES_VIOLATION, seq_sort_coreErr14ASSERT_VIOLATIONMEMORY_FREE, seq_sort_coreErr3REQUIRES_VIOLATION, seq_sort_coreErr6REQUIRES_VIOLATION, seq_sort_coreErr7REQUIRES_VIOLATION, seq_sort_coreErr5REQUIRES_VIOLATION, seq_sort_coreErr9REQUIRES_VIOLATION, seq_sort_coreErr12ASSERT_VIOLATIONMEMORY_FREE, seq_sort_coreErr13ASSERT_VIOLATIONMEMORY_FREE, seq_sort_coreErr8REQUIRES_VIOLATION, seq_sort_coreErr0REQUIRES_VIOLATION, seq_sort_coreErr10REQUIRES_VIOLATION, seq_sort_coreErr1REQUIRES_VIOLATION, seq_sort_coreErr11REQUIRES_VIOLATION, inspect_beforeErr16REQUIRES_VIOLATION, inspect_beforeErr5REQUIRES_VIOLATION, inspect_beforeErr7REQUIRES_VIOLATION, inspect_beforeErr6REQUIRES_VIOLATION, inspect_beforeErr17REQUIRES_VIOLATION, inspect_beforeErr3REQUIRES_VIOLATION, inspect_beforeErr2REQUIRES_VIOLATION, inspect_beforeErr13REQUIRES_VIOLATION, inspect_beforeErr4REQUIRES_VIOLATION, inspect_beforeErr15REQUIRES_VIOLATION, inspect_beforeErr14REQUIRES_VIOLATION, inspect_beforeErr0REQUIRES_VIOLATION, inspect_beforeErr11REQUIRES_VIOLATION, inspect_beforeErr10REQUIRES_VIOLATION, inspect_beforeErr12REQUIRES_VIOLATION, inspect_beforeErr1REQUIRES_VIOLATION, inspect_beforeErr8REQUIRES_VIOLATION, inspect_beforeErr19REQUIRES_VIOLATION, inspect_beforeErr18REQUIRES_VIOLATION, inspect_beforeErr9REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr9REQUIRES_VIOLATION, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr19ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17ASSERT_VIOLATIONMEMORY_FREE, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr18ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr20ENSURES_VIOLATIONMEMORY_LEAK, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, inspect_afterErr2REQUIRES_VIOLATION, inspect_afterErr3REQUIRES_VIOLATION, inspect_afterErr8REQUIRES_VIOLATION, inspect_afterErr9REQUIRES_VIOLATION, inspect_afterErr4REQUIRES_VIOLATION, inspect_afterErr5REQUIRES_VIOLATION, inspect_afterErr10REQUIRES_VIOLATION, inspect_afterErr0REQUIRES_VIOLATION, inspect_afterErr11REQUIRES_VIOLATION, inspect_afterErr1REQUIRES_VIOLATION, inspect_afterErr6REQUIRES_VIOLATION, inspect_afterErr7REQUIRES_VIOLATION]=== [2020-10-20 06:18:25,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:18:25,567 INFO L82 PathProgramCache]: Analyzing trace with hash 1383343236, now seen corresponding path program 1 times [2020-10-20 06:18:25,567 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:18:25,571 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879545813] [2020-10-20 06:18:25,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:18:25,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:18:25,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:18:25,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:18:25,687 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 06:18:25,687 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879545813] [2020-10-20 06:18:25,687 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:18:25,688 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-20 06:18:25,688 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441948429] [2020-10-20 06:18:25,688 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-20 06:18:25,689 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:18:25,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-20 06:18:25,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-20 06:18:25,689 INFO L87 Difference]: Start difference. First operand 288 states and 316 transitions. Second operand 9 states. [2020-10-20 06:18:26,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:18:26,822 INFO L93 Difference]: Finished difference Result 342 states and 373 transitions. [2020-10-20 06:18:26,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-20 06:18:26,823 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 37 [2020-10-20 06:18:26,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:18:26,825 INFO L225 Difference]: With dead ends: 342 [2020-10-20 06:18:26,825 INFO L226 Difference]: Without dead ends: 342 [2020-10-20 06:18:26,826 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2020-10-20 06:18:26,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2020-10-20 06:18:26,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 288. [2020-10-20 06:18:26,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 288 states. [2020-10-20 06:18:26,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 315 transitions. [2020-10-20 06:18:26,837 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 315 transitions. Word has length 37 [2020-10-20 06:18:26,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:18:26,839 INFO L481 AbstractCegarLoop]: Abstraction has 288 states and 315 transitions. [2020-10-20 06:18:26,839 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-20 06:18:26,839 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 315 transitions. [2020-10-20 06:18:26,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-20 06:18:26,840 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:18:26,841 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:18:26,841 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-20 06:18:26,841 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, merge_pairErr14REQUIRES_VIOLATION, merge_pairErr4REQUIRES_VIOLATION, merge_pairErr15REQUIRES_VIOLATION, merge_pairErr2REQUIRES_VIOLATION, merge_pairErr13REQUIRES_VIOLATION, merge_pairErr3REQUIRES_VIOLATION, merge_pairErr1REQUIRES_VIOLATION, merge_pairErr12REQUIRES_VIOLATION, merge_pairErr10REQUIRES_VIOLATION, merge_pairErr21REQUIRES_VIOLATION, merge_pairErr0REQUIRES_VIOLATION, merge_pairErr11REQUIRES_VIOLATION, merge_pairErr9REQUIRES_VIOLATION, merge_pairErr20REQUIRES_VIOLATION, merge_pairErr18REQUIRES_VIOLATION, merge_pairErr8REQUIRES_VIOLATION, merge_pairErr19REQUIRES_VIOLATION, merge_pairErr6REQUIRES_VIOLATION, merge_pairErr17REQUIRES_VIOLATION, merge_pairErr7REQUIRES_VIOLATION, merge_pairErr5REQUIRES_VIOLATION, merge_pairErr16REQUIRES_VIOLATION, merge_single_nodeErr9REQUIRES_VIOLATION, merge_single_nodeErr8REQUIRES_VIOLATION, merge_single_nodeErr12REQUIRES_VIOLATION, merge_single_nodeErr1REQUIRES_VIOLATION, merge_single_nodeErr11REQUIRES_VIOLATION, merge_single_nodeErr0REQUIRES_VIOLATION, merge_single_nodeErr10REQUIRES_VIOLATION, merge_single_nodeErr4REQUIRES_VIOLATION, merge_single_nodeErr3REQUIRES_VIOLATION, merge_single_nodeErr13REQUIRES_VIOLATION, merge_single_nodeErr2REQUIRES_VIOLATION, merge_single_nodeErr7REQUIRES_VIOLATION, merge_single_nodeErr6REQUIRES_VIOLATION, merge_single_nodeErr5REQUIRES_VIOLATION, seq_sort_coreErr4REQUIRES_VIOLATION, seq_sort_coreErr2REQUIRES_VIOLATION, seq_sort_coreErr14ASSERT_VIOLATIONMEMORY_FREE, seq_sort_coreErr3REQUIRES_VIOLATION, seq_sort_coreErr6REQUIRES_VIOLATION, seq_sort_coreErr7REQUIRES_VIOLATION, seq_sort_coreErr5REQUIRES_VIOLATION, seq_sort_coreErr9REQUIRES_VIOLATION, seq_sort_coreErr12ASSERT_VIOLATIONMEMORY_FREE, seq_sort_coreErr13ASSERT_VIOLATIONMEMORY_FREE, seq_sort_coreErr8REQUIRES_VIOLATION, seq_sort_coreErr0REQUIRES_VIOLATION, seq_sort_coreErr10REQUIRES_VIOLATION, seq_sort_coreErr1REQUIRES_VIOLATION, seq_sort_coreErr11REQUIRES_VIOLATION, inspect_beforeErr16REQUIRES_VIOLATION, inspect_beforeErr5REQUIRES_VIOLATION, inspect_beforeErr7REQUIRES_VIOLATION, inspect_beforeErr6REQUIRES_VIOLATION, inspect_beforeErr17REQUIRES_VIOLATION, inspect_beforeErr3REQUIRES_VIOLATION, inspect_beforeErr2REQUIRES_VIOLATION, inspect_beforeErr13REQUIRES_VIOLATION, inspect_beforeErr4REQUIRES_VIOLATION, inspect_beforeErr15REQUIRES_VIOLATION, inspect_beforeErr14REQUIRES_VIOLATION, inspect_beforeErr0REQUIRES_VIOLATION, inspect_beforeErr11REQUIRES_VIOLATION, inspect_beforeErr10REQUIRES_VIOLATION, inspect_beforeErr12REQUIRES_VIOLATION, inspect_beforeErr1REQUIRES_VIOLATION, inspect_beforeErr8REQUIRES_VIOLATION, inspect_beforeErr19REQUIRES_VIOLATION, inspect_beforeErr18REQUIRES_VIOLATION, inspect_beforeErr9REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr9REQUIRES_VIOLATION, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr19ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17ASSERT_VIOLATIONMEMORY_FREE, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr18ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr20ENSURES_VIOLATIONMEMORY_LEAK, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, inspect_afterErr2REQUIRES_VIOLATION, inspect_afterErr3REQUIRES_VIOLATION, inspect_afterErr8REQUIRES_VIOLATION, inspect_afterErr9REQUIRES_VIOLATION, inspect_afterErr4REQUIRES_VIOLATION, inspect_afterErr5REQUIRES_VIOLATION, inspect_afterErr10REQUIRES_VIOLATION, inspect_afterErr0REQUIRES_VIOLATION, inspect_afterErr11REQUIRES_VIOLATION, inspect_afterErr1REQUIRES_VIOLATION, inspect_afterErr6REQUIRES_VIOLATION, inspect_afterErr7REQUIRES_VIOLATION]=== [2020-10-20 06:18:26,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:18:26,842 INFO L82 PathProgramCache]: Analyzing trace with hash -109597017, now seen corresponding path program 1 times [2020-10-20 06:18:26,842 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:18:26,842 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043602537] [2020-10-20 06:18:26,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:18:26,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:18:26,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:18:26,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:18:27,004 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 06:18:27,005 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043602537] [2020-10-20 06:18:27,006 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:18:27,006 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-20 06:18:27,006 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062332696] [2020-10-20 06:18:27,007 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-20 06:18:27,007 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:18:27,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-20 06:18:27,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-20 06:18:27,008 INFO L87 Difference]: Start difference. First operand 288 states and 315 transitions. Second operand 11 states. [2020-10-20 06:18:28,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:18:28,583 INFO L93 Difference]: Finished difference Result 356 states and 391 transitions. [2020-10-20 06:18:28,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-20 06:18:28,584 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 36 [2020-10-20 06:18:28,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:18:28,586 INFO L225 Difference]: With dead ends: 356 [2020-10-20 06:18:28,587 INFO L226 Difference]: Without dead ends: 356 [2020-10-20 06:18:28,587 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-10-20 06:18:28,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2020-10-20 06:18:28,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 289. [2020-10-20 06:18:28,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 289 states. [2020-10-20 06:18:28,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 317 transitions. [2020-10-20 06:18:28,605 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 317 transitions. Word has length 36 [2020-10-20 06:18:28,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:18:28,606 INFO L481 AbstractCegarLoop]: Abstraction has 289 states and 317 transitions. [2020-10-20 06:18:28,607 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-20 06:18:28,607 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 317 transitions. [2020-10-20 06:18:28,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-20 06:18:28,608 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:18:28,608 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:18:28,609 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-20 06:18:28,609 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, merge_pairErr14REQUIRES_VIOLATION, merge_pairErr4REQUIRES_VIOLATION, merge_pairErr15REQUIRES_VIOLATION, merge_pairErr2REQUIRES_VIOLATION, merge_pairErr13REQUIRES_VIOLATION, merge_pairErr3REQUIRES_VIOLATION, merge_pairErr1REQUIRES_VIOLATION, merge_pairErr12REQUIRES_VIOLATION, merge_pairErr10REQUIRES_VIOLATION, merge_pairErr21REQUIRES_VIOLATION, merge_pairErr0REQUIRES_VIOLATION, merge_pairErr11REQUIRES_VIOLATION, merge_pairErr9REQUIRES_VIOLATION, merge_pairErr20REQUIRES_VIOLATION, merge_pairErr18REQUIRES_VIOLATION, merge_pairErr8REQUIRES_VIOLATION, merge_pairErr19REQUIRES_VIOLATION, merge_pairErr6REQUIRES_VIOLATION, merge_pairErr17REQUIRES_VIOLATION, merge_pairErr7REQUIRES_VIOLATION, merge_pairErr5REQUIRES_VIOLATION, merge_pairErr16REQUIRES_VIOLATION, merge_single_nodeErr9REQUIRES_VIOLATION, merge_single_nodeErr8REQUIRES_VIOLATION, merge_single_nodeErr12REQUIRES_VIOLATION, merge_single_nodeErr1REQUIRES_VIOLATION, merge_single_nodeErr11REQUIRES_VIOLATION, merge_single_nodeErr0REQUIRES_VIOLATION, merge_single_nodeErr10REQUIRES_VIOLATION, merge_single_nodeErr4REQUIRES_VIOLATION, merge_single_nodeErr3REQUIRES_VIOLATION, merge_single_nodeErr13REQUIRES_VIOLATION, merge_single_nodeErr2REQUIRES_VIOLATION, merge_single_nodeErr7REQUIRES_VIOLATION, merge_single_nodeErr6REQUIRES_VIOLATION, merge_single_nodeErr5REQUIRES_VIOLATION, seq_sort_coreErr4REQUIRES_VIOLATION, seq_sort_coreErr2REQUIRES_VIOLATION, seq_sort_coreErr14ASSERT_VIOLATIONMEMORY_FREE, seq_sort_coreErr3REQUIRES_VIOLATION, seq_sort_coreErr6REQUIRES_VIOLATION, seq_sort_coreErr7REQUIRES_VIOLATION, seq_sort_coreErr5REQUIRES_VIOLATION, seq_sort_coreErr9REQUIRES_VIOLATION, seq_sort_coreErr12ASSERT_VIOLATIONMEMORY_FREE, seq_sort_coreErr13ASSERT_VIOLATIONMEMORY_FREE, seq_sort_coreErr8REQUIRES_VIOLATION, seq_sort_coreErr0REQUIRES_VIOLATION, seq_sort_coreErr10REQUIRES_VIOLATION, seq_sort_coreErr1REQUIRES_VIOLATION, seq_sort_coreErr11REQUIRES_VIOLATION, inspect_beforeErr16REQUIRES_VIOLATION, inspect_beforeErr5REQUIRES_VIOLATION, inspect_beforeErr7REQUIRES_VIOLATION, inspect_beforeErr6REQUIRES_VIOLATION, inspect_beforeErr17REQUIRES_VIOLATION, inspect_beforeErr3REQUIRES_VIOLATION, inspect_beforeErr2REQUIRES_VIOLATION, inspect_beforeErr13REQUIRES_VIOLATION, inspect_beforeErr4REQUIRES_VIOLATION, inspect_beforeErr15REQUIRES_VIOLATION, inspect_beforeErr14REQUIRES_VIOLATION, inspect_beforeErr0REQUIRES_VIOLATION, inspect_beforeErr11REQUIRES_VIOLATION, inspect_beforeErr10REQUIRES_VIOLATION, inspect_beforeErr12REQUIRES_VIOLATION, inspect_beforeErr1REQUIRES_VIOLATION, inspect_beforeErr8REQUIRES_VIOLATION, inspect_beforeErr19REQUIRES_VIOLATION, inspect_beforeErr18REQUIRES_VIOLATION, inspect_beforeErr9REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr9REQUIRES_VIOLATION, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr19ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17ASSERT_VIOLATIONMEMORY_FREE, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr18ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr20ENSURES_VIOLATIONMEMORY_LEAK, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, inspect_afterErr2REQUIRES_VIOLATION, inspect_afterErr3REQUIRES_VIOLATION, inspect_afterErr8REQUIRES_VIOLATION, inspect_afterErr9REQUIRES_VIOLATION, inspect_afterErr4REQUIRES_VIOLATION, inspect_afterErr5REQUIRES_VIOLATION, inspect_afterErr10REQUIRES_VIOLATION, inspect_afterErr0REQUIRES_VIOLATION, inspect_afterErr11REQUIRES_VIOLATION, inspect_afterErr1REQUIRES_VIOLATION, inspect_afterErr6REQUIRES_VIOLATION, inspect_afterErr7REQUIRES_VIOLATION]=== [2020-10-20 06:18:28,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:18:28,610 INFO L82 PathProgramCache]: Analyzing trace with hash -109597016, now seen corresponding path program 1 times [2020-10-20 06:18:28,610 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:18:28,610 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115659088] [2020-10-20 06:18:28,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:18:28,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:18:28,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:18:28,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:18:28,795 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 06:18:28,796 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115659088] [2020-10-20 06:18:28,796 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:18:28,796 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-20 06:18:28,797 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331433115] [2020-10-20 06:18:28,797 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-20 06:18:28,797 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:18:28,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-20 06:18:28,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-20 06:18:28,798 INFO L87 Difference]: Start difference. First operand 289 states and 317 transitions. Second operand 10 states. [2020-10-20 06:18:30,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:18:30,344 INFO L93 Difference]: Finished difference Result 369 states and 404 transitions. [2020-10-20 06:18:30,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-20 06:18:30,345 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 36 [2020-10-20 06:18:30,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:18:30,347 INFO L225 Difference]: With dead ends: 369 [2020-10-20 06:18:30,347 INFO L226 Difference]: Without dead ends: 369 [2020-10-20 06:18:30,348 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2020-10-20 06:18:30,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2020-10-20 06:18:30,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 289. [2020-10-20 06:18:30,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 289 states. [2020-10-20 06:18:30,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 316 transitions. [2020-10-20 06:18:30,356 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 316 transitions. Word has length 36 [2020-10-20 06:18:30,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:18:30,356 INFO L481 AbstractCegarLoop]: Abstraction has 289 states and 316 transitions. [2020-10-20 06:18:30,357 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-20 06:18:30,357 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 316 transitions. [2020-10-20 06:18:30,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-20 06:18:30,357 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:18:30,357 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:18:30,358 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-20 06:18:30,358 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, merge_pairErr14REQUIRES_VIOLATION, merge_pairErr4REQUIRES_VIOLATION, merge_pairErr15REQUIRES_VIOLATION, merge_pairErr2REQUIRES_VIOLATION, merge_pairErr13REQUIRES_VIOLATION, merge_pairErr3REQUIRES_VIOLATION, merge_pairErr1REQUIRES_VIOLATION, merge_pairErr12REQUIRES_VIOLATION, merge_pairErr10REQUIRES_VIOLATION, merge_pairErr21REQUIRES_VIOLATION, merge_pairErr0REQUIRES_VIOLATION, merge_pairErr11REQUIRES_VIOLATION, merge_pairErr9REQUIRES_VIOLATION, merge_pairErr20REQUIRES_VIOLATION, merge_pairErr18REQUIRES_VIOLATION, merge_pairErr8REQUIRES_VIOLATION, merge_pairErr19REQUIRES_VIOLATION, merge_pairErr6REQUIRES_VIOLATION, merge_pairErr17REQUIRES_VIOLATION, merge_pairErr7REQUIRES_VIOLATION, merge_pairErr5REQUIRES_VIOLATION, merge_pairErr16REQUIRES_VIOLATION, merge_single_nodeErr9REQUIRES_VIOLATION, merge_single_nodeErr8REQUIRES_VIOLATION, merge_single_nodeErr12REQUIRES_VIOLATION, merge_single_nodeErr1REQUIRES_VIOLATION, merge_single_nodeErr11REQUIRES_VIOLATION, merge_single_nodeErr0REQUIRES_VIOLATION, merge_single_nodeErr10REQUIRES_VIOLATION, merge_single_nodeErr4REQUIRES_VIOLATION, merge_single_nodeErr3REQUIRES_VIOLATION, merge_single_nodeErr13REQUIRES_VIOLATION, merge_single_nodeErr2REQUIRES_VIOLATION, merge_single_nodeErr7REQUIRES_VIOLATION, merge_single_nodeErr6REQUIRES_VIOLATION, merge_single_nodeErr5REQUIRES_VIOLATION, seq_sort_coreErr4REQUIRES_VIOLATION, seq_sort_coreErr2REQUIRES_VIOLATION, seq_sort_coreErr14ASSERT_VIOLATIONMEMORY_FREE, seq_sort_coreErr3REQUIRES_VIOLATION, seq_sort_coreErr6REQUIRES_VIOLATION, seq_sort_coreErr7REQUIRES_VIOLATION, seq_sort_coreErr5REQUIRES_VIOLATION, seq_sort_coreErr9REQUIRES_VIOLATION, seq_sort_coreErr12ASSERT_VIOLATIONMEMORY_FREE, seq_sort_coreErr13ASSERT_VIOLATIONMEMORY_FREE, seq_sort_coreErr8REQUIRES_VIOLATION, seq_sort_coreErr0REQUIRES_VIOLATION, seq_sort_coreErr10REQUIRES_VIOLATION, seq_sort_coreErr1REQUIRES_VIOLATION, seq_sort_coreErr11REQUIRES_VIOLATION, inspect_beforeErr16REQUIRES_VIOLATION, inspect_beforeErr5REQUIRES_VIOLATION, inspect_beforeErr7REQUIRES_VIOLATION, inspect_beforeErr6REQUIRES_VIOLATION, inspect_beforeErr17REQUIRES_VIOLATION, inspect_beforeErr3REQUIRES_VIOLATION, inspect_beforeErr2REQUIRES_VIOLATION, inspect_beforeErr13REQUIRES_VIOLATION, inspect_beforeErr4REQUIRES_VIOLATION, inspect_beforeErr15REQUIRES_VIOLATION, inspect_beforeErr14REQUIRES_VIOLATION, inspect_beforeErr0REQUIRES_VIOLATION, inspect_beforeErr11REQUIRES_VIOLATION, inspect_beforeErr10REQUIRES_VIOLATION, inspect_beforeErr12REQUIRES_VIOLATION, inspect_beforeErr1REQUIRES_VIOLATION, inspect_beforeErr8REQUIRES_VIOLATION, inspect_beforeErr19REQUIRES_VIOLATION, inspect_beforeErr18REQUIRES_VIOLATION, inspect_beforeErr9REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr9REQUIRES_VIOLATION, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr19ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17ASSERT_VIOLATIONMEMORY_FREE, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr18ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr20ENSURES_VIOLATIONMEMORY_LEAK, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, inspect_afterErr2REQUIRES_VIOLATION, inspect_afterErr3REQUIRES_VIOLATION, inspect_afterErr8REQUIRES_VIOLATION, inspect_afterErr9REQUIRES_VIOLATION, inspect_afterErr4REQUIRES_VIOLATION, inspect_afterErr5REQUIRES_VIOLATION, inspect_afterErr10REQUIRES_VIOLATION, inspect_afterErr0REQUIRES_VIOLATION, inspect_afterErr11REQUIRES_VIOLATION, inspect_afterErr1REQUIRES_VIOLATION, inspect_afterErr6REQUIRES_VIOLATION, inspect_afterErr7REQUIRES_VIOLATION]=== [2020-10-20 06:18:30,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:18:30,359 INFO L82 PathProgramCache]: Analyzing trace with hash 1983893577, now seen corresponding path program 1 times [2020-10-20 06:18:30,359 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:18:30,359 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120337070] [2020-10-20 06:18:30,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:18:30,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:18:30,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:18:30,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:18:30,501 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 06:18:30,502 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120337070] [2020-10-20 06:18:30,502 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:18:30,502 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-20 06:18:30,503 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464992917] [2020-10-20 06:18:30,503 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-20 06:18:30,503 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:18:30,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-20 06:18:30,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-20 06:18:30,504 INFO L87 Difference]: Start difference. First operand 289 states and 316 transitions. Second operand 11 states. [2020-10-20 06:18:32,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:18:32,299 INFO L93 Difference]: Finished difference Result 354 states and 389 transitions. [2020-10-20 06:18:32,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-20 06:18:32,300 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 36 [2020-10-20 06:18:32,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:18:32,303 INFO L225 Difference]: With dead ends: 354 [2020-10-20 06:18:32,304 INFO L226 Difference]: Without dead ends: 354 [2020-10-20 06:18:32,304 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-10-20 06:18:32,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2020-10-20 06:18:32,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 289. [2020-10-20 06:18:32,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 289 states. [2020-10-20 06:18:32,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 315 transitions. [2020-10-20 06:18:32,313 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 315 transitions. Word has length 36 [2020-10-20 06:18:32,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:18:32,313 INFO L481 AbstractCegarLoop]: Abstraction has 289 states and 315 transitions. [2020-10-20 06:18:32,313 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-20 06:18:32,314 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 315 transitions. [2020-10-20 06:18:32,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-20 06:18:32,314 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:18:32,314 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:18:32,315 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-20 06:18:32,315 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, merge_pairErr14REQUIRES_VIOLATION, merge_pairErr4REQUIRES_VIOLATION, merge_pairErr15REQUIRES_VIOLATION, merge_pairErr2REQUIRES_VIOLATION, merge_pairErr13REQUIRES_VIOLATION, merge_pairErr3REQUIRES_VIOLATION, merge_pairErr1REQUIRES_VIOLATION, merge_pairErr12REQUIRES_VIOLATION, merge_pairErr10REQUIRES_VIOLATION, merge_pairErr21REQUIRES_VIOLATION, merge_pairErr0REQUIRES_VIOLATION, merge_pairErr11REQUIRES_VIOLATION, merge_pairErr9REQUIRES_VIOLATION, merge_pairErr20REQUIRES_VIOLATION, merge_pairErr18REQUIRES_VIOLATION, merge_pairErr8REQUIRES_VIOLATION, merge_pairErr19REQUIRES_VIOLATION, merge_pairErr6REQUIRES_VIOLATION, merge_pairErr17REQUIRES_VIOLATION, merge_pairErr7REQUIRES_VIOLATION, merge_pairErr5REQUIRES_VIOLATION, merge_pairErr16REQUIRES_VIOLATION, merge_single_nodeErr9REQUIRES_VIOLATION, merge_single_nodeErr8REQUIRES_VIOLATION, merge_single_nodeErr12REQUIRES_VIOLATION, merge_single_nodeErr1REQUIRES_VIOLATION, merge_single_nodeErr11REQUIRES_VIOLATION, merge_single_nodeErr0REQUIRES_VIOLATION, merge_single_nodeErr10REQUIRES_VIOLATION, merge_single_nodeErr4REQUIRES_VIOLATION, merge_single_nodeErr3REQUIRES_VIOLATION, merge_single_nodeErr13REQUIRES_VIOLATION, merge_single_nodeErr2REQUIRES_VIOLATION, merge_single_nodeErr7REQUIRES_VIOLATION, merge_single_nodeErr6REQUIRES_VIOLATION, merge_single_nodeErr5REQUIRES_VIOLATION, seq_sort_coreErr4REQUIRES_VIOLATION, seq_sort_coreErr2REQUIRES_VIOLATION, seq_sort_coreErr14ASSERT_VIOLATIONMEMORY_FREE, seq_sort_coreErr3REQUIRES_VIOLATION, seq_sort_coreErr6REQUIRES_VIOLATION, seq_sort_coreErr7REQUIRES_VIOLATION, seq_sort_coreErr5REQUIRES_VIOLATION, seq_sort_coreErr9REQUIRES_VIOLATION, seq_sort_coreErr12ASSERT_VIOLATIONMEMORY_FREE, seq_sort_coreErr13ASSERT_VIOLATIONMEMORY_FREE, seq_sort_coreErr8REQUIRES_VIOLATION, seq_sort_coreErr0REQUIRES_VIOLATION, seq_sort_coreErr10REQUIRES_VIOLATION, seq_sort_coreErr1REQUIRES_VIOLATION, seq_sort_coreErr11REQUIRES_VIOLATION, inspect_beforeErr16REQUIRES_VIOLATION, inspect_beforeErr5REQUIRES_VIOLATION, inspect_beforeErr7REQUIRES_VIOLATION, inspect_beforeErr6REQUIRES_VIOLATION, inspect_beforeErr17REQUIRES_VIOLATION, inspect_beforeErr3REQUIRES_VIOLATION, inspect_beforeErr2REQUIRES_VIOLATION, inspect_beforeErr13REQUIRES_VIOLATION, inspect_beforeErr4REQUIRES_VIOLATION, inspect_beforeErr15REQUIRES_VIOLATION, inspect_beforeErr14REQUIRES_VIOLATION, inspect_beforeErr0REQUIRES_VIOLATION, inspect_beforeErr11REQUIRES_VIOLATION, inspect_beforeErr10REQUIRES_VIOLATION, inspect_beforeErr12REQUIRES_VIOLATION, inspect_beforeErr1REQUIRES_VIOLATION, inspect_beforeErr8REQUIRES_VIOLATION, inspect_beforeErr19REQUIRES_VIOLATION, inspect_beforeErr18REQUIRES_VIOLATION, inspect_beforeErr9REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr9REQUIRES_VIOLATION, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr19ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17ASSERT_VIOLATIONMEMORY_FREE, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr18ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr20ENSURES_VIOLATIONMEMORY_LEAK, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, inspect_afterErr2REQUIRES_VIOLATION, inspect_afterErr3REQUIRES_VIOLATION, inspect_afterErr8REQUIRES_VIOLATION, inspect_afterErr9REQUIRES_VIOLATION, inspect_afterErr4REQUIRES_VIOLATION, inspect_afterErr5REQUIRES_VIOLATION, inspect_afterErr10REQUIRES_VIOLATION, inspect_afterErr0REQUIRES_VIOLATION, inspect_afterErr11REQUIRES_VIOLATION, inspect_afterErr1REQUIRES_VIOLATION, inspect_afterErr6REQUIRES_VIOLATION, inspect_afterErr7REQUIRES_VIOLATION]=== [2020-10-20 06:18:32,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:18:32,316 INFO L82 PathProgramCache]: Analyzing trace with hash 1983893578, now seen corresponding path program 1 times [2020-10-20 06:18:32,316 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:18:32,316 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796076573] [2020-10-20 06:18:32,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:18:32,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:18:32,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:18:32,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:18:32,462 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 06:18:32,463 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796076573] [2020-10-20 06:18:32,463 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:18:32,464 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-20 06:18:32,464 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627735257] [2020-10-20 06:18:32,464 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-20 06:18:32,465 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:18:32,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-20 06:18:32,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-20 06:18:32,466 INFO L87 Difference]: Start difference. First operand 289 states and 315 transitions. Second operand 10 states. [2020-10-20 06:18:34,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:18:34,063 INFO L93 Difference]: Finished difference Result 367 states and 402 transitions. [2020-10-20 06:18:34,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-20 06:18:34,064 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 36 [2020-10-20 06:18:34,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:18:34,067 INFO L225 Difference]: With dead ends: 367 [2020-10-20 06:18:34,068 INFO L226 Difference]: Without dead ends: 367 [2020-10-20 06:18:34,068 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2020-10-20 06:18:34,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2020-10-20 06:18:34,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 289. [2020-10-20 06:18:34,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 289 states. [2020-10-20 06:18:34,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 314 transitions. [2020-10-20 06:18:34,077 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 314 transitions. Word has length 36 [2020-10-20 06:18:34,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:18:34,077 INFO L481 AbstractCegarLoop]: Abstraction has 289 states and 314 transitions. [2020-10-20 06:18:34,078 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-20 06:18:34,078 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 314 transitions. [2020-10-20 06:18:34,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-20 06:18:34,079 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:18:34,079 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:18:34,079 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-20 06:18:34,079 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, merge_pairErr14REQUIRES_VIOLATION, merge_pairErr4REQUIRES_VIOLATION, merge_pairErr15REQUIRES_VIOLATION, merge_pairErr2REQUIRES_VIOLATION, merge_pairErr13REQUIRES_VIOLATION, merge_pairErr3REQUIRES_VIOLATION, merge_pairErr1REQUIRES_VIOLATION, merge_pairErr12REQUIRES_VIOLATION, merge_pairErr10REQUIRES_VIOLATION, merge_pairErr21REQUIRES_VIOLATION, merge_pairErr0REQUIRES_VIOLATION, merge_pairErr11REQUIRES_VIOLATION, merge_pairErr9REQUIRES_VIOLATION, merge_pairErr20REQUIRES_VIOLATION, merge_pairErr18REQUIRES_VIOLATION, merge_pairErr8REQUIRES_VIOLATION, merge_pairErr19REQUIRES_VIOLATION, merge_pairErr6REQUIRES_VIOLATION, merge_pairErr17REQUIRES_VIOLATION, merge_pairErr7REQUIRES_VIOLATION, merge_pairErr5REQUIRES_VIOLATION, merge_pairErr16REQUIRES_VIOLATION, merge_single_nodeErr9REQUIRES_VIOLATION, merge_single_nodeErr8REQUIRES_VIOLATION, merge_single_nodeErr12REQUIRES_VIOLATION, merge_single_nodeErr1REQUIRES_VIOLATION, merge_single_nodeErr11REQUIRES_VIOLATION, merge_single_nodeErr0REQUIRES_VIOLATION, merge_single_nodeErr10REQUIRES_VIOLATION, merge_single_nodeErr4REQUIRES_VIOLATION, merge_single_nodeErr3REQUIRES_VIOLATION, merge_single_nodeErr13REQUIRES_VIOLATION, merge_single_nodeErr2REQUIRES_VIOLATION, merge_single_nodeErr7REQUIRES_VIOLATION, merge_single_nodeErr6REQUIRES_VIOLATION, merge_single_nodeErr5REQUIRES_VIOLATION, seq_sort_coreErr4REQUIRES_VIOLATION, seq_sort_coreErr2REQUIRES_VIOLATION, seq_sort_coreErr14ASSERT_VIOLATIONMEMORY_FREE, seq_sort_coreErr3REQUIRES_VIOLATION, seq_sort_coreErr6REQUIRES_VIOLATION, seq_sort_coreErr7REQUIRES_VIOLATION, seq_sort_coreErr5REQUIRES_VIOLATION, seq_sort_coreErr9REQUIRES_VIOLATION, seq_sort_coreErr12ASSERT_VIOLATIONMEMORY_FREE, seq_sort_coreErr13ASSERT_VIOLATIONMEMORY_FREE, seq_sort_coreErr8REQUIRES_VIOLATION, seq_sort_coreErr0REQUIRES_VIOLATION, seq_sort_coreErr10REQUIRES_VIOLATION, seq_sort_coreErr1REQUIRES_VIOLATION, seq_sort_coreErr11REQUIRES_VIOLATION, inspect_beforeErr16REQUIRES_VIOLATION, inspect_beforeErr5REQUIRES_VIOLATION, inspect_beforeErr7REQUIRES_VIOLATION, inspect_beforeErr6REQUIRES_VIOLATION, inspect_beforeErr17REQUIRES_VIOLATION, inspect_beforeErr3REQUIRES_VIOLATION, inspect_beforeErr2REQUIRES_VIOLATION, inspect_beforeErr13REQUIRES_VIOLATION, inspect_beforeErr4REQUIRES_VIOLATION, inspect_beforeErr15REQUIRES_VIOLATION, inspect_beforeErr14REQUIRES_VIOLATION, inspect_beforeErr0REQUIRES_VIOLATION, inspect_beforeErr11REQUIRES_VIOLATION, inspect_beforeErr10REQUIRES_VIOLATION, inspect_beforeErr12REQUIRES_VIOLATION, inspect_beforeErr1REQUIRES_VIOLATION, inspect_beforeErr8REQUIRES_VIOLATION, inspect_beforeErr19REQUIRES_VIOLATION, inspect_beforeErr18REQUIRES_VIOLATION, inspect_beforeErr9REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr9REQUIRES_VIOLATION, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr19ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17ASSERT_VIOLATIONMEMORY_FREE, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr18ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr20ENSURES_VIOLATIONMEMORY_LEAK, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, inspect_afterErr2REQUIRES_VIOLATION, inspect_afterErr3REQUIRES_VIOLATION, inspect_afterErr8REQUIRES_VIOLATION, inspect_afterErr9REQUIRES_VIOLATION, inspect_afterErr4REQUIRES_VIOLATION, inspect_afterErr5REQUIRES_VIOLATION, inspect_afterErr10REQUIRES_VIOLATION, inspect_afterErr0REQUIRES_VIOLATION, inspect_afterErr11REQUIRES_VIOLATION, inspect_afterErr1REQUIRES_VIOLATION, inspect_afterErr6REQUIRES_VIOLATION, inspect_afterErr7REQUIRES_VIOLATION]=== [2020-10-20 06:18:34,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:18:34,080 INFO L82 PathProgramCache]: Analyzing trace with hash 1789541438, now seen corresponding path program 1 times [2020-10-20 06:18:34,080 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:18:34,081 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731815797] [2020-10-20 06:18:34,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:18:34,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:18:34,101 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:18:34,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:18:34,118 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:18:34,152 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:18:34,152 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 06:18:34,153 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-20 06:18:34,196 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 06:18:34 BoogieIcfgContainer [2020-10-20 06:18:34,197 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 06:18:34,197 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 06:18:34,197 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 06:18:34,198 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 06:18:34,198 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:18:12" (3/4) ... [2020-10-20 06:18:34,201 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-20 06:18:34,258 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 06:18:34,258 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 06:18:34,261 INFO L168 Benchmark]: Toolchain (without parser) took 23206.32 ms. Allocated memory was 39.8 MB in the beginning and 128.5 MB in the end (delta: 88.6 MB). Free memory was 21.7 MB in the beginning and 75.5 MB in the end (delta: -53.8 MB). Peak memory consumption was 34.8 MB. Max. memory is 14.3 GB. [2020-10-20 06:18:34,262 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 30.4 MB. Free memory was 15.5 MB in the beginning and 15.5 MB in the end (delta: 39.9 kB). Peak memory consumption was 39.9 kB. Max. memory is 14.3 GB. [2020-10-20 06:18:34,262 INFO L168 Benchmark]: CACSL2BoogieTranslator took 538.57 ms. Allocated memory was 39.8 MB in the beginning and 41.9 MB in the end (delta: 2.1 MB). Free memory was 20.8 MB in the beginning and 10.3 MB in the end (delta: 10.5 MB). Peak memory consumption was 13.4 MB. Max. memory is 14.3 GB. [2020-10-20 06:18:34,263 INFO L168 Benchmark]: Boogie Preprocessor took 122.93 ms. Allocated memory is still 41.9 MB. Free memory was 10.3 MB in the beginning and 21.9 MB in the end (delta: -11.6 MB). There was no memory consumed. Max. memory is 14.3 GB. [2020-10-20 06:18:34,264 INFO L168 Benchmark]: RCFGBuilder took 1127.33 ms. Allocated memory was 41.9 MB in the beginning and 50.9 MB in the end (delta: 8.9 MB). Free memory was 21.7 MB in the beginning and 16.2 MB in the end (delta: 5.5 MB). Peak memory consumption was 17.5 MB. Max. memory is 14.3 GB. [2020-10-20 06:18:34,265 INFO L168 Benchmark]: TraceAbstraction took 21346.73 ms. Allocated memory was 50.9 MB in the beginning and 128.5 MB in the end (delta: 77.6 MB). Free memory was 15.8 MB in the beginning and 77.4 MB in the end (delta: -61.6 MB). Peak memory consumption was 16.0 MB. Max. memory is 14.3 GB. [2020-10-20 06:18:34,265 INFO L168 Benchmark]: Witness Printer took 60.94 ms. Allocated memory is still 128.5 MB. Free memory was 77.4 MB in the beginning and 75.5 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 14.3 GB. [2020-10-20 06:18:34,269 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 30.4 MB. Free memory was 15.5 MB in the beginning and 15.5 MB in the end (delta: 39.9 kB). Peak memory consumption was 39.9 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 538.57 ms. Allocated memory was 39.8 MB in the beginning and 41.9 MB in the end (delta: 2.1 MB). Free memory was 20.8 MB in the beginning and 10.3 MB in the end (delta: 10.5 MB). Peak memory consumption was 13.4 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 122.93 ms. Allocated memory is still 41.9 MB. Free memory was 10.3 MB in the beginning and 21.9 MB in the end (delta: -11.6 MB). There was no memory consumed. Max. memory is 14.3 GB. * RCFGBuilder took 1127.33 ms. Allocated memory was 41.9 MB in the beginning and 50.9 MB in the end (delta: 8.9 MB). Free memory was 21.7 MB in the beginning and 16.2 MB in the end (delta: 5.5 MB). Peak memory consumption was 17.5 MB. Max. memory is 14.3 GB. * TraceAbstraction took 21346.73 ms. Allocated memory was 50.9 MB in the beginning and 128.5 MB in the end (delta: 77.6 MB). Free memory was 15.8 MB in the beginning and 77.4 MB in the end (delta: -61.6 MB). Peak memory consumption was 16.0 MB. Max. memory is 14.3 GB. * Witness Printer took 60.94 ms. Allocated memory is still 128.5 MB. Free memory was 77.4 MB in the beginning and 75.5 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 12]: not all allocated memory was freed not all allocated memory was freed We found a FailurePath: [L638] struct list *data = ((void *)0); VAL [data={0:0}] [L639] COND TRUE __VERIFIER_nondet_int() [L640] struct node *node = malloc(sizeof *node); VAL [data={0:0}, malloc(sizeof *node)={-1:0}, node={-1:0}] [L641] COND FALSE !(!node) VAL [data={0:0}, malloc(sizeof *node)={-1:0}, node={-1:0}] [L643] node->next = node VAL [data={0:0}, malloc(sizeof *node)={-1:0}, node={-1:0}] [L644] node->value = __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=-2, data={0:0}, malloc(sizeof *node)={-1:0}, node={-1:0}] [L645] struct list *item = malloc(sizeof *item); VAL [data={0:0}, item={-3:0}, malloc(sizeof *item)={-3:0}, malloc(sizeof *node)={-1:0}, node={-1:0}] [L646] COND FALSE !(!item) VAL [data={0:0}, item={-3:0}, malloc(sizeof *item)={-3:0}, malloc(sizeof *node)={-1:0}, node={-1:0}] [L648] item->slist = node VAL [data={0:0}, item={-3:0}, malloc(sizeof *item)={-3:0}, malloc(sizeof *node)={-1:0}, node={-1:0}] [L649] item->next = data VAL [data={0:0}, item={-3:0}, malloc(sizeof *item)={-3:0}, malloc(sizeof *node)={-1:0}, node={-1:0}] [L650] data = item VAL [data={-3:0}, item={-3:0}, malloc(sizeof *item)={-3:0}, malloc(sizeof *node)={-1:0}, node={-1:0}] [L639] COND FALSE !(__VERIFIER_nondet_int()) [L652] COND FALSE !(!data) VAL [data={-3:0}, item={-3:0}, malloc(sizeof *item)={-3:0}, malloc(sizeof *node)={-1:0}, node={-1:0}] [L654] CALL inspect_before(data) VAL [shape={-3:0}] [L615] COND FALSE !(!(shape)) VAL [shape={-3:0}, shape={-3:0}] [L616] shape->next VAL [shape={-3:0}, shape={-3:0}, shape->next={0:0}] [L616] COND FALSE !(shape->next) [L622] COND FALSE !(!(shape)) VAL [shape={-3:0}, shape={-3:0}] [L623] EXPR shape->next VAL [shape={-3:0}, shape={-3:0}, shape->next={0:0}] [L623] COND FALSE !(!(shape->next == ((void *)0))) [L624] EXPR shape->slist VAL [shape={-3:0}, shape={-3:0}, shape->slist={-1:0}] [L624] COND FALSE !(!(shape->slist)) [L625] EXPR shape->slist VAL [shape={-3:0}, shape={-3:0}, shape->slist={-1:0}] [L625] EXPR shape->slist->next VAL [shape={-3:0}, shape={-3:0}, shape->slist={-1:0}, shape->slist->next={-1:0}] [L625] COND TRUE !(shape->slist->next == ((void *)0)) [L625] CALL fail() [L565] CALL reach_error() [L12] COND FALSE !(0) [L12] __assert_fail ("0", "merge_sort-1.c", 3, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 12 procedures, 290 locations, 105 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 21.2s, OverallIterations: 19, TraceHistogramMax: 2, AutomataDifference: 18.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 3528 SDtfs, 5203 SDslu, 5545 SDs, 0 SdLazy, 16502 SolverSat, 673 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 13.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 200 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 2.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=291occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 18 MinimizatonAttempts, 1003 StatesRemovedByMinimization, 18 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 498 NumberOfCodeBlocks, 498 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 439 ConstructedInterpolants, 0 QuantifiedInterpolants, 91709 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 18 InterpolantComputations, 18 PerfectInterpolantSequences, 24/24 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 proved your program to be incorrect! Received shutdown request...