./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 906a4fb5 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/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 0.1.25-906a4fb [2020-10-19 18:25:18,575 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-19 18:25:18,578 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-19 18:25:18,604 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-19 18:25:18,604 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-19 18:25:18,613 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-19 18:25:18,615 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-19 18:25:18,618 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-19 18:25:18,621 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-19 18:25:18,624 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-19 18:25:18,625 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-19 18:25:18,627 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-19 18:25:18,628 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-19 18:25:18,631 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-19 18:25:18,634 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-19 18:25:18,636 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-19 18:25:18,637 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-19 18:25:18,641 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-19 18:25:18,643 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-19 18:25:18,649 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-19 18:25:18,652 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-19 18:25:18,653 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-19 18:25:18,655 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-19 18:25:18,656 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-19 18:25:18,667 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-19 18:25:18,668 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-19 18:25:18,668 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-19 18:25:18,670 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-19 18:25:18,672 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-19 18:25:18,673 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-19 18:25:18,674 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-19 18:25:18,674 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-19 18:25:18,675 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-19 18:25:18,676 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-19 18:25:18,677 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-19 18:25:18,678 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-19 18:25:18,679 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-19 18:25:18,679 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-19 18:25:18,679 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-19 18:25:18,680 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-19 18:25:18,682 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-19 18:25:18,683 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-MemCleanup-32bit-Automizer_Default.epf [2020-10-19 18:25:18,729 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-19 18:25:18,729 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-19 18:25:18,731 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-19 18:25:18,732 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-19 18:25:18,732 INFO L138 SettingsManager]: * Use SBE=true [2020-10-19 18:25:18,733 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-19 18:25:18,733 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-19 18:25:18,733 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-19 18:25:18,734 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-19 18:25:18,734 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-19 18:25:18,735 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-19 18:25:18,735 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-10-19 18:25:18,736 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-10-19 18:25:18,736 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-19 18:25:18,736 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-10-19 18:25:18,737 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-19 18:25:18,737 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-19 18:25:18,738 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-19 18:25:18,738 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-19 18:25:18,740 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-19 18:25:18,740 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-19 18:25:18,742 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 18:25:18,742 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-19 18:25:18,743 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-19 18:25:18,743 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-19 18:25:18,743 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-19 18:25:18,744 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-19 18:25:18,744 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 [2020-10-19 18:25:19,114 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-19 18:25:19,134 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-19 18:25:19,139 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-19 18:25:19,140 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-19 18:25:19,141 INFO L275 PluginConnector]: CDTParser initialized [2020-10-19 18:25:19,142 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/heap-manipulation/merge_sort-1.i [2020-10-19 18:25:19,216 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3c4fae12e/1e263228d3fe4d028ecc2d823eaf2a98/FLAG45174867f [2020-10-19 18:25:19,655 INFO L306 CDTParser]: Found 1 translation units. [2020-10-19 18:25:19,656 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/heap-manipulation/merge_sort-1.i [2020-10-19 18:25:19,676 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3c4fae12e/1e263228d3fe4d028ecc2d823eaf2a98/FLAG45174867f [2020-10-19 18:25:19,974 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3c4fae12e/1e263228d3fe4d028ecc2d823eaf2a98 [2020-10-19 18:25:19,978 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-19 18:25:19,985 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-19 18:25:19,986 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-19 18:25:19,986 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-19 18:25:19,990 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-19 18:25:19,990 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:25:19" (1/1) ... [2020-10-19 18:25:19,993 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@596b7f81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:25:19, skipping insertion in model container [2020-10-19 18:25:19,993 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:25:19" (1/1) ... [2020-10-19 18:25:20,003 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-19 18:25:20,065 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 18:25:20,598 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:25:20,611 INFO L203 MainTranslator]: Completed pre-run [2020-10-19 18:25:20,685 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:25:20,744 INFO L208 MainTranslator]: Completed translation [2020-10-19 18:25:20,744 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:25:20 WrapperNode [2020-10-19 18:25:20,744 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-19 18:25:20,745 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-19 18:25:20,746 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-19 18:25:20,746 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-19 18:25:20,761 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:25:20" (1/1) ... [2020-10-19 18:25:20,761 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:25:20" (1/1) ... [2020-10-19 18:25:20,780 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:25:20" (1/1) ... [2020-10-19 18:25:20,780 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:25:20" (1/1) ... [2020-10-19 18:25:20,817 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:25:20" (1/1) ... [2020-10-19 18:25:20,827 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:25:20" (1/1) ... [2020-10-19 18:25:20,832 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:25:20" (1/1) ... [2020-10-19 18:25:20,841 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-19 18:25:20,841 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-19 18:25:20,842 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-19 18:25:20,842 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-19 18:25:20,843 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:25:20" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 18:25:20,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-19 18:25:20,909 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-19 18:25:20,909 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-19 18:25:20,909 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-19 18:25:20,909 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-19 18:25:20,909 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2020-10-19 18:25:20,909 INFO L138 BoogieDeclarations]: Found implementation of procedure merge_single_node [2020-10-19 18:25:20,909 INFO L138 BoogieDeclarations]: Found implementation of procedure merge_pair [2020-10-19 18:25:20,910 INFO L138 BoogieDeclarations]: Found implementation of procedure seq_sort_core [2020-10-19 18:25:20,910 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_before [2020-10-19 18:25:20,910 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_after [2020-10-19 18:25:20,911 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-19 18:25:20,912 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-19 18:25:20,912 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-19 18:25:20,912 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-19 18:25:20,912 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-19 18:25:20,912 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-19 18:25:20,913 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-19 18:25:20,913 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-19 18:25:20,913 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-19 18:25:20,913 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-19 18:25:20,913 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-19 18:25:20,913 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-19 18:25:20,914 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-19 18:25:20,914 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-19 18:25:20,914 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-19 18:25:20,915 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-19 18:25:20,915 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-19 18:25:20,916 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-19 18:25:20,916 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-19 18:25:20,916 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-19 18:25:20,916 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-19 18:25:20,916 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-19 18:25:20,916 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-19 18:25:20,916 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-19 18:25:20,916 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-19 18:25:20,917 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-19 18:25:20,917 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-19 18:25:20,917 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-19 18:25:20,919 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-19 18:25:20,919 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-19 18:25:20,919 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-19 18:25:20,920 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-19 18:25:20,920 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-19 18:25:20,920 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-19 18:25:20,920 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-19 18:25:20,920 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-19 18:25:20,920 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-19 18:25:20,920 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-19 18:25:20,921 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-19 18:25:20,921 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-19 18:25:20,921 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-19 18:25:20,921 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-19 18:25:20,921 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-19 18:25:20,921 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-19 18:25:20,921 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-19 18:25:20,922 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-19 18:25:20,922 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-19 18:25:20,922 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-19 18:25:20,922 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-19 18:25:20,922 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-19 18:25:20,922 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-19 18:25:20,922 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-19 18:25:20,923 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-19 18:25:20,923 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-19 18:25:20,923 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-19 18:25:20,923 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-19 18:25:20,923 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-19 18:25:20,923 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-19 18:25:20,923 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-19 18:25:20,924 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-19 18:25:20,924 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-19 18:25:20,924 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-19 18:25:20,924 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-19 18:25:20,924 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-19 18:25:20,924 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-19 18:25:20,924 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-19 18:25:20,925 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-19 18:25:20,925 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-19 18:25:20,925 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-19 18:25:20,925 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-19 18:25:20,925 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-19 18:25:20,925 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-19 18:25:20,925 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-19 18:25:20,925 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-19 18:25:20,926 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-19 18:25:20,926 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-19 18:25:20,926 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-19 18:25:20,926 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-19 18:25:20,926 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-19 18:25:20,926 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-19 18:25:20,926 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-19 18:25:20,927 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-19 18:25:20,927 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-19 18:25:20,927 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-19 18:25:20,927 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-19 18:25:20,927 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-19 18:25:20,927 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-19 18:25:20,927 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-19 18:25:20,928 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-19 18:25:20,928 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-19 18:25:20,928 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-19 18:25:20,928 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-19 18:25:20,928 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-19 18:25:20,928 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-19 18:25:20,928 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-19 18:25:20,928 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-19 18:25:20,929 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-19 18:25:20,929 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-19 18:25:20,929 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-19 18:25:20,929 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-19 18:25:20,929 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-19 18:25:20,929 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-19 18:25:20,929 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-19 18:25:20,929 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-19 18:25:20,930 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-19 18:25:20,930 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-19 18:25:20,930 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-19 18:25:20,930 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-19 18:25:20,930 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-19 18:25:20,930 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2020-10-19 18:25:20,930 INFO L130 BoogieDeclarations]: Found specification of procedure merge_single_node [2020-10-19 18:25:20,931 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-19 18:25:20,931 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-19 18:25:20,931 INFO L130 BoogieDeclarations]: Found specification of procedure merge_pair [2020-10-19 18:25:20,931 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-19 18:25:20,931 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-19 18:25:20,931 INFO L130 BoogieDeclarations]: Found specification of procedure seq_sort_core [2020-10-19 18:25:20,931 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_before [2020-10-19 18:25:20,932 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_after [2020-10-19 18:25:20,932 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-19 18:25:20,932 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-19 18:25:20,932 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-19 18:25:20,932 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-19 18:25:20,932 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-19 18:25:20,932 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-19 18:25:21,928 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-19 18:25:21,929 INFO L298 CfgBuilder]: Removed 33 assume(true) statements. [2020-10-19 18:25:21,931 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:25:21 BoogieIcfgContainer [2020-10-19 18:25:21,932 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-19 18:25:21,933 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-19 18:25:21,934 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-19 18:25:21,938 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-19 18:25:21,939 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.10 06:25:19" (1/3) ... [2020-10-19 18:25:21,940 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23c81127 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 06:25:21, skipping insertion in model container [2020-10-19 18:25:21,940 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:25:20" (2/3) ... [2020-10-19 18:25:21,941 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23c81127 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 06:25:21, skipping insertion in model container [2020-10-19 18:25:21,941 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:25:21" (3/3) ... [2020-10-19 18:25:21,943 INFO L111 eAbstractionObserver]: Analyzing ICFG merge_sort-1.i [2020-10-19 18:25:21,957 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-19 18:25:21,967 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 105 error locations. [2020-10-19 18:25:21,983 INFO L253 AbstractCegarLoop]: Starting to check reachability of 105 error locations. [2020-10-19 18:25:22,006 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-19 18:25:22,007 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-19 18:25:22,007 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-19 18:25:22,007 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-19 18:25:22,008 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-19 18:25:22,008 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-19 18:25:22,008 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-19 18:25:22,009 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-19 18:25:22,038 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states. [2020-10-19 18:25:22,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-19 18:25:22,048 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:25:22,049 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:25:22,050 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]=== [2020-10-19 18:25:22,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:25:22,057 INFO L82 PathProgramCache]: Analyzing trace with hash 1669507998, now seen corresponding path program 1 times [2020-10-19 18:25:22,068 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:25:22,069 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122362477] [2020-10-19 18:25:22,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:25:22,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:25:22,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:25:22,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:25:22,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:25:22,292 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122362477] [2020-10-19 18:25:22,293 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:25:22,294 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 18:25:22,295 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983881640] [2020-10-19 18:25:22,301 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 18:25:22,302 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:25:22,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 18:25:22,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 18:25:22,322 INFO L87 Difference]: Start difference. First operand 284 states. Second operand 3 states. [2020-10-19 18:25:22,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:25:22,954 INFO L93 Difference]: Finished difference Result 322 states and 357 transitions. [2020-10-19 18:25:22,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 18:25:22,956 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-10-19 18:25:22,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:25:22,973 INFO L225 Difference]: With dead ends: 322 [2020-10-19 18:25:22,974 INFO L226 Difference]: Without dead ends: 317 [2020-10-19 18:25:22,976 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 [2020-10-19 18:25:23,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2020-10-19 18:25:23,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 279. [2020-10-19 18:25:23,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 279 states. [2020-10-19 18:25:23,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 305 transitions. [2020-10-19 18:25:23,054 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 305 transitions. Word has length 9 [2020-10-19 18:25:23,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:25:23,055 INFO L481 AbstractCegarLoop]: Abstraction has 279 states and 305 transitions. [2020-10-19 18:25:23,055 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 18:25:23,056 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 305 transitions. [2020-10-19 18:25:23,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-19 18:25:23,057 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:25:23,057 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:25:23,057 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-19 18:25:23,058 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]=== [2020-10-19 18:25:23,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:25:23,059 INFO L82 PathProgramCache]: Analyzing trace with hash 214093638, now seen corresponding path program 1 times [2020-10-19 18:25:23,059 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:25:23,060 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530956551] [2020-10-19 18:25:23,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:25:23,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:25:23,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:25:23,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:25:23,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:25:23,225 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530956551] [2020-10-19 18:25:23,225 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:25:23,225 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 18:25:23,226 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080722953] [2020-10-19 18:25:23,227 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:25:23,228 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:25:23,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:25:23,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:25:23,229 INFO L87 Difference]: Start difference. First operand 279 states and 305 transitions. Second operand 4 states. [2020-10-19 18:25:24,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:25:24,082 INFO L93 Difference]: Finished difference Result 346 states and 384 transitions. [2020-10-19 18:25:24,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:25:24,083 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-10-19 18:25:24,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:25:24,086 INFO L225 Difference]: With dead ends: 346 [2020-10-19 18:25:24,086 INFO L226 Difference]: Without dead ends: 346 [2020-10-19 18:25:24,087 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:25:24,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2020-10-19 18:25:24,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 277. [2020-10-19 18:25:24,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 277 states. [2020-10-19 18:25:24,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 303 transitions. [2020-10-19 18:25:24,111 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 303 transitions. Word has length 10 [2020-10-19 18:25:24,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:25:24,112 INFO L481 AbstractCegarLoop]: Abstraction has 277 states and 303 transitions. [2020-10-19 18:25:24,112 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:25:24,112 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 303 transitions. [2020-10-19 18:25:24,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-19 18:25:24,113 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:25:24,113 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:25:24,114 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-19 18:25:24,114 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]=== [2020-10-19 18:25:24,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:25:24,115 INFO L82 PathProgramCache]: Analyzing trace with hash 214093637, now seen corresponding path program 1 times [2020-10-19 18:25:24,115 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:25:24,116 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486103215] [2020-10-19 18:25:24,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:25:24,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:25:24,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:25:24,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:25:24,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:25:24,191 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486103215] [2020-10-19 18:25:24,191 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:25:24,192 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 18:25:24,192 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932061102] [2020-10-19 18:25:24,192 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:25:24,193 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:25:24,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:25:24,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:25:24,201 INFO L87 Difference]: Start difference. First operand 277 states and 303 transitions. Second operand 4 states. [2020-10-19 18:25:24,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:25:24,908 INFO L93 Difference]: Finished difference Result 332 states and 369 transitions. [2020-10-19 18:25:24,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:25:24,908 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-10-19 18:25:24,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:25:24,911 INFO L225 Difference]: With dead ends: 332 [2020-10-19 18:25:24,911 INFO L226 Difference]: Without dead ends: 332 [2020-10-19 18:25:24,912 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:25:24,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2020-10-19 18:25:24,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 275. [2020-10-19 18:25:24,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 275 states. [2020-10-19 18:25:24,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 301 transitions. [2020-10-19 18:25:24,929 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 301 transitions. Word has length 10 [2020-10-19 18:25:24,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:25:24,929 INFO L481 AbstractCegarLoop]: Abstraction has 275 states and 301 transitions. [2020-10-19 18:25:24,929 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:25:24,929 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 301 transitions. [2020-10-19 18:25:24,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-19 18:25:24,930 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:25:24,930 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:25:24,930 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-19 18:25:24,931 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]=== [2020-10-19 18:25:24,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:25:24,931 INFO L82 PathProgramCache]: Analyzing trace with hash 360940191, now seen corresponding path program 1 times [2020-10-19 18:25:24,931 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:25:24,932 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898769871] [2020-10-19 18:25:24,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:25:24,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:25:24,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:25:24,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:25:24,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:25:24,990 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898769871] [2020-10-19 18:25:24,991 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:25:24,991 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 18:25:24,991 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811164821] [2020-10-19 18:25:24,991 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:25:24,992 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:25:24,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:25:24,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:25:24,992 INFO L87 Difference]: Start difference. First operand 275 states and 301 transitions. Second operand 4 states. [2020-10-19 18:25:25,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:25:25,570 INFO L93 Difference]: Finished difference Result 310 states and 337 transitions. [2020-10-19 18:25:25,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-19 18:25:25,571 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-10-19 18:25:25,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:25:25,574 INFO L225 Difference]: With dead ends: 310 [2020-10-19 18:25:25,574 INFO L226 Difference]: Without dead ends: 309 [2020-10-19 18:25:25,575 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 [2020-10-19 18:25:25,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2020-10-19 18:25:25,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 274. [2020-10-19 18:25:25,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 274 states. [2020-10-19 18:25:25,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 299 transitions. [2020-10-19 18:25:25,586 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 299 transitions. Word has length 14 [2020-10-19 18:25:25,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:25:25,587 INFO L481 AbstractCegarLoop]: Abstraction has 274 states and 299 transitions. [2020-10-19 18:25:25,587 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:25:25,587 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 299 transitions. [2020-10-19 18:25:25,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-19 18:25:25,587 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:25:25,588 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:25:25,588 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-19 18:25:25,588 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]=== [2020-10-19 18:25:25,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:25:25,589 INFO L82 PathProgramCache]: Analyzing trace with hash 1683080499, now seen corresponding path program 1 times [2020-10-19 18:25:25,589 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:25:25,589 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757692034] [2020-10-19 18:25:25,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:25:25,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:25:25,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:25:25,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:25:25,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:25:25,648 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757692034] [2020-10-19 18:25:25,648 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:25:25,648 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 18:25:25,649 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064202184] [2020-10-19 18:25:25,649 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:25:25,649 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:25:25,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:25:25,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:25:25,650 INFO L87 Difference]: Start difference. First operand 274 states and 299 transitions. Second operand 4 states. [2020-10-19 18:25:26,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:25:26,332 INFO L93 Difference]: Finished difference Result 316 states and 347 transitions. [2020-10-19 18:25:26,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:25:26,332 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-10-19 18:25:26,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:25:26,335 INFO L225 Difference]: With dead ends: 316 [2020-10-19 18:25:26,336 INFO L226 Difference]: Without dead ends: 316 [2020-10-19 18:25:26,337 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:25:26,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2020-10-19 18:25:26,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 272. [2020-10-19 18:25:26,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 272 states. [2020-10-19 18:25:26,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 297 transitions. [2020-10-19 18:25:26,354 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 297 transitions. Word has length 15 [2020-10-19 18:25:26,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:25:26,355 INFO L481 AbstractCegarLoop]: Abstraction has 272 states and 297 transitions. [2020-10-19 18:25:26,355 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:25:26,355 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 297 transitions. [2020-10-19 18:25:26,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-19 18:25:26,356 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:25:26,356 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:25:26,357 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-19 18:25:26,359 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]=== [2020-10-19 18:25:26,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:25:26,359 INFO L82 PathProgramCache]: Analyzing trace with hash 1683080500, now seen corresponding path program 1 times [2020-10-19 18:25:26,360 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:25:26,360 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069050053] [2020-10-19 18:25:26,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:25:26,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:25:26,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:25:26,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:25:26,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:25:26,480 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069050053] [2020-10-19 18:25:26,480 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:25:26,481 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 18:25:26,482 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897577686] [2020-10-19 18:25:26,482 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:25:26,482 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:25:26,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:25:26,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:25:26,484 INFO L87 Difference]: Start difference. First operand 272 states and 297 transitions. Second operand 4 states. [2020-10-19 18:25:27,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:25:27,111 INFO L93 Difference]: Finished difference Result 326 states and 358 transitions. [2020-10-19 18:25:27,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:25:27,111 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-10-19 18:25:27,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:25:27,114 INFO L225 Difference]: With dead ends: 326 [2020-10-19 18:25:27,114 INFO L226 Difference]: Without dead ends: 326 [2020-10-19 18:25:27,115 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:25:27,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2020-10-19 18:25:27,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 270. [2020-10-19 18:25:27,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 270 states. [2020-10-19 18:25:27,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 295 transitions. [2020-10-19 18:25:27,125 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 295 transitions. Word has length 15 [2020-10-19 18:25:27,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:25:27,125 INFO L481 AbstractCegarLoop]: Abstraction has 270 states and 295 transitions. [2020-10-19 18:25:27,126 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:25:27,126 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 295 transitions. [2020-10-19 18:25:27,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-19 18:25:27,127 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:25:27,127 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] [2020-10-19 18:25:27,127 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-19 18:25:27,128 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]=== [2020-10-19 18:25:27,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:25:27,128 INFO L82 PathProgramCache]: Analyzing trace with hash -1200517425, now seen corresponding path program 1 times [2020-10-19 18:25:27,129 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:25:27,129 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369721686] [2020-10-19 18:25:27,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:25:27,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:25:27,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:25:27,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:25:27,185 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:25:27,185 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369721686] [2020-10-19 18:25:27,186 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:25:27,186 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-19 18:25:27,186 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552001417] [2020-10-19 18:25:27,187 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-19 18:25:27,187 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:25:27,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-19 18:25:27,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-19 18:25:27,188 INFO L87 Difference]: Start difference. First operand 270 states and 295 transitions. Second operand 5 states. [2020-10-19 18:25:27,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:25:27,883 INFO L93 Difference]: Finished difference Result 329 states and 361 transitions. [2020-10-19 18:25:27,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-19 18:25:27,886 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-10-19 18:25:27,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:25:27,888 INFO L225 Difference]: With dead ends: 329 [2020-10-19 18:25:27,889 INFO L226 Difference]: Without dead ends: 329 [2020-10-19 18:25:27,889 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-19 18:25:27,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2020-10-19 18:25:27,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 270. [2020-10-19 18:25:27,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 270 states. [2020-10-19 18:25:27,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 294 transitions. [2020-10-19 18:25:27,898 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 294 transitions. Word has length 21 [2020-10-19 18:25:27,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:25:27,899 INFO L481 AbstractCegarLoop]: Abstraction has 270 states and 294 transitions. [2020-10-19 18:25:27,899 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-19 18:25:27,899 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 294 transitions. [2020-10-19 18:25:27,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-19 18:25:27,900 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:25:27,900 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] [2020-10-19 18:25:27,900 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-19 18:25:27,900 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]=== [2020-10-19 18:25:27,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:25:27,901 INFO L82 PathProgramCache]: Analyzing trace with hash -84878857, now seen corresponding path program 1 times [2020-10-19 18:25:27,901 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:25:27,901 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363471561] [2020-10-19 18:25:27,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:25:27,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:25:27,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:25:27,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:25:27,967 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:25:27,968 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363471561] [2020-10-19 18:25:27,968 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:25:27,968 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-19 18:25:27,968 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116648672] [2020-10-19 18:25:27,969 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-19 18:25:27,969 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:25:27,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-19 18:25:27,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-19 18:25:27,969 INFO L87 Difference]: Start difference. First operand 270 states and 294 transitions. Second operand 7 states. [2020-10-19 18:25:28,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:25:28,984 INFO L93 Difference]: Finished difference Result 310 states and 341 transitions. [2020-10-19 18:25:28,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-19 18:25:28,985 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 25 [2020-10-19 18:25:28,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:25:28,987 INFO L225 Difference]: With dead ends: 310 [2020-10-19 18:25:28,988 INFO L226 Difference]: Without dead ends: 310 [2020-10-19 18:25:28,989 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-19 18:25:28,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2020-10-19 18:25:29,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 263. [2020-10-19 18:25:29,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 263 states. [2020-10-19 18:25:29,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 289 transitions. [2020-10-19 18:25:29,002 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 289 transitions. Word has length 25 [2020-10-19 18:25:29,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:25:29,003 INFO L481 AbstractCegarLoop]: Abstraction has 263 states and 289 transitions. [2020-10-19 18:25:29,003 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-19 18:25:29,003 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 289 transitions. [2020-10-19 18:25:29,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-19 18:25:29,004 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:25:29,004 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] [2020-10-19 18:25:29,004 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-19 18:25:29,005 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]=== [2020-10-19 18:25:29,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:25:29,005 INFO L82 PathProgramCache]: Analyzing trace with hash -84878856, now seen corresponding path program 1 times [2020-10-19 18:25:29,005 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:25:29,006 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327681009] [2020-10-19 18:25:29,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:25:29,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:25:29,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:25:29,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:25:29,141 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:25:29,141 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327681009] [2020-10-19 18:25:29,141 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:25:29,141 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-19 18:25:29,142 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174500294] [2020-10-19 18:25:29,142 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-19 18:25:29,142 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:25:29,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-19 18:25:29,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-19 18:25:29,143 INFO L87 Difference]: Start difference. First operand 263 states and 289 transitions. Second operand 7 states. [2020-10-19 18:25:30,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:25:30,376 INFO L93 Difference]: Finished difference Result 386 states and 430 transitions. [2020-10-19 18:25:30,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-19 18:25:30,376 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 25 [2020-10-19 18:25:30,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:25:30,379 INFO L225 Difference]: With dead ends: 386 [2020-10-19 18:25:30,379 INFO L226 Difference]: Without dead ends: 386 [2020-10-19 18:25:30,380 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 [2020-10-19 18:25:30,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2020-10-19 18:25:30,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 291. [2020-10-19 18:25:30,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 291 states. [2020-10-19 18:25:30,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 327 transitions. [2020-10-19 18:25:30,398 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 327 transitions. Word has length 25 [2020-10-19 18:25:30,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:25:30,402 INFO L481 AbstractCegarLoop]: Abstraction has 291 states and 327 transitions. [2020-10-19 18:25:30,402 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-19 18:25:30,402 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 327 transitions. [2020-10-19 18:25:30,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-19 18:25:30,404 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:25:30,404 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] [2020-10-19 18:25:30,404 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-19 18:25:30,404 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]=== [2020-10-19 18:25:30,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:25:30,405 INFO L82 PathProgramCache]: Analyzing trace with hash 49803751, now seen corresponding path program 1 times [2020-10-19 18:25:30,405 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:25:30,405 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192760495] [2020-10-19 18:25:30,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:25:30,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:25:30,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:25:30,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:25:30,509 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:25:30,510 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192760495] [2020-10-19 18:25:30,510 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:25:30,510 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-19 18:25:30,510 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137904853] [2020-10-19 18:25:30,511 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-19 18:25:30,511 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:25:30,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-19 18:25:30,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-19 18:25:30,511 INFO L87 Difference]: Start difference. First operand 291 states and 327 transitions. Second operand 7 states. [2020-10-19 18:25:31,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:25:31,398 INFO L93 Difference]: Finished difference Result 354 states and 391 transitions. [2020-10-19 18:25:31,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-19 18:25:31,399 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2020-10-19 18:25:31,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:25:31,401 INFO L225 Difference]: With dead ends: 354 [2020-10-19 18:25:31,402 INFO L226 Difference]: Without dead ends: 354 [2020-10-19 18:25:31,402 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 [2020-10-19 18:25:31,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2020-10-19 18:25:31,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 290. [2020-10-19 18:25:31,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 290 states. [2020-10-19 18:25:31,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 323 transitions. [2020-10-19 18:25:31,415 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 323 transitions. Word has length 27 [2020-10-19 18:25:31,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:25:31,416 INFO L481 AbstractCegarLoop]: Abstraction has 290 states and 323 transitions. [2020-10-19 18:25:31,416 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-19 18:25:31,416 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 323 transitions. [2020-10-19 18:25:31,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-19 18:25:31,426 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:25:31,426 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] [2020-10-19 18:25:31,426 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-19 18:25:31,427 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]=== [2020-10-19 18:25:31,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:25:31,427 INFO L82 PathProgramCache]: Analyzing trace with hash 823685700, now seen corresponding path program 1 times [2020-10-19 18:25:31,428 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:25:31,428 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323537594] [2020-10-19 18:25:31,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:25:31,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:25:31,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:25:31,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:25:31,527 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-19 18:25:31,528 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323537594] [2020-10-19 18:25:31,529 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:25:31,529 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-19 18:25:31,530 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629918126] [2020-10-19 18:25:31,530 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-19 18:25:31,530 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:25:31,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-19 18:25:31,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-19 18:25:31,531 INFO L87 Difference]: Start difference. First operand 290 states and 323 transitions. Second operand 6 states. [2020-10-19 18:25:32,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:25:32,326 INFO L93 Difference]: Finished difference Result 309 states and 343 transitions. [2020-10-19 18:25:32,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-19 18:25:32,326 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 34 [2020-10-19 18:25:32,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:25:32,328 INFO L225 Difference]: With dead ends: 309 [2020-10-19 18:25:32,329 INFO L226 Difference]: Without dead ends: 309 [2020-10-19 18:25:32,329 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 [2020-10-19 18:25:32,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2020-10-19 18:25:32,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 289. [2020-10-19 18:25:32,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 289 states. [2020-10-19 18:25:32,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 320 transitions. [2020-10-19 18:25:32,338 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 320 transitions. Word has length 34 [2020-10-19 18:25:32,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:25:32,338 INFO L481 AbstractCegarLoop]: Abstraction has 289 states and 320 transitions. [2020-10-19 18:25:32,338 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-19 18:25:32,338 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 320 transitions. [2020-10-19 18:25:32,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-19 18:25:32,339 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:25:32,339 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] [2020-10-19 18:25:32,340 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-19 18:25:32,340 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]=== [2020-10-19 18:25:32,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:25:32,340 INFO L82 PathProgramCache]: Analyzing trace with hash -222097266, now seen corresponding path program 1 times [2020-10-19 18:25:32,340 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:25:32,341 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34084757] [2020-10-19 18:25:32,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:25:32,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:25:32,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:25:32,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:25:32,419 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-19 18:25:32,420 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34084757] [2020-10-19 18:25:32,420 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:25:32,420 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-19 18:25:32,420 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637061291] [2020-10-19 18:25:32,421 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-19 18:25:32,421 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:25:32,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-19 18:25:32,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-19 18:25:32,421 INFO L87 Difference]: Start difference. First operand 289 states and 320 transitions. Second operand 6 states. [2020-10-19 18:25:33,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:25:33,213 INFO L93 Difference]: Finished difference Result 308 states and 340 transitions. [2020-10-19 18:25:33,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-19 18:25:33,214 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 34 [2020-10-19 18:25:33,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:25:33,217 INFO L225 Difference]: With dead ends: 308 [2020-10-19 18:25:33,217 INFO L226 Difference]: Without dead ends: 308 [2020-10-19 18:25:33,218 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 [2020-10-19 18:25:33,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2020-10-19 18:25:33,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 288. [2020-10-19 18:25:33,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 288 states. [2020-10-19 18:25:33,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 317 transitions. [2020-10-19 18:25:33,226 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 317 transitions. Word has length 34 [2020-10-19 18:25:33,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:25:33,226 INFO L481 AbstractCegarLoop]: Abstraction has 288 states and 317 transitions. [2020-10-19 18:25:33,226 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-19 18:25:33,226 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 317 transitions. [2020-10-19 18:25:33,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-19 18:25:33,227 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:25:33,227 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] [2020-10-19 18:25:33,227 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-19 18:25:33,228 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]=== [2020-10-19 18:25:33,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:25:33,228 INFO L82 PathProgramCache]: Analyzing trace with hash 907327601, now seen corresponding path program 1 times [2020-10-19 18:25:33,228 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:25:33,228 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113672077] [2020-10-19 18:25:33,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:25:33,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:25:33,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:25:33,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:25:33,338 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:25:33,338 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113672077] [2020-10-19 18:25:33,338 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:25:33,339 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-19 18:25:33,339 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515931658] [2020-10-19 18:25:33,339 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-19 18:25:33,339 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:25:33,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-19 18:25:33,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-19 18:25:33,340 INFO L87 Difference]: Start difference. First operand 288 states and 317 transitions. Second operand 9 states. [2020-10-19 18:25:34,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:25:34,479 INFO L93 Difference]: Finished difference Result 343 states and 375 transitions. [2020-10-19 18:25:34,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-19 18:25:34,479 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 37 [2020-10-19 18:25:34,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:25:34,482 INFO L225 Difference]: With dead ends: 343 [2020-10-19 18:25:34,482 INFO L226 Difference]: Without dead ends: 343 [2020-10-19 18:25:34,483 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 [2020-10-19 18:25:34,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2020-10-19 18:25:34,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 288. [2020-10-19 18:25:34,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 288 states. [2020-10-19 18:25:34,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 316 transitions. [2020-10-19 18:25:34,491 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 316 transitions. Word has length 37 [2020-10-19 18:25:34,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:25:34,491 INFO L481 AbstractCegarLoop]: Abstraction has 288 states and 316 transitions. [2020-10-19 18:25:34,491 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-19 18:25:34,491 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 316 transitions. [2020-10-19 18:25:34,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-19 18:25:34,492 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:25:34,492 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] [2020-10-19 18:25:34,492 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-19 18:25:34,492 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]=== [2020-10-19 18:25:34,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:25:34,493 INFO L82 PathProgramCache]: Analyzing trace with hash 1383343236, now seen corresponding path program 1 times [2020-10-19 18:25:34,493 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:25:34,493 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793220788] [2020-10-19 18:25:34,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:25:34,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:25:34,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:25:34,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:25:34,586 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:25:34,587 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793220788] [2020-10-19 18:25:34,587 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:25:34,587 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-19 18:25:34,587 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446475026] [2020-10-19 18:25:34,588 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-19 18:25:34,588 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:25:34,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-19 18:25:34,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-19 18:25:34,589 INFO L87 Difference]: Start difference. First operand 288 states and 316 transitions. Second operand 9 states. [2020-10-19 18:25:35,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:25:35,743 INFO L93 Difference]: Finished difference Result 342 states and 373 transitions. [2020-10-19 18:25:35,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-19 18:25:35,744 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 37 [2020-10-19 18:25:35,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:25:35,747 INFO L225 Difference]: With dead ends: 342 [2020-10-19 18:25:35,747 INFO L226 Difference]: Without dead ends: 342 [2020-10-19 18:25:35,747 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 [2020-10-19 18:25:35,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2020-10-19 18:25:35,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 288. [2020-10-19 18:25:35,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 288 states. [2020-10-19 18:25:35,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 315 transitions. [2020-10-19 18:25:35,757 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 315 transitions. Word has length 37 [2020-10-19 18:25:35,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:25:35,757 INFO L481 AbstractCegarLoop]: Abstraction has 288 states and 315 transitions. [2020-10-19 18:25:35,757 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-19 18:25:35,757 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 315 transitions. [2020-10-19 18:25:35,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-19 18:25:35,758 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:25:35,758 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] [2020-10-19 18:25:35,759 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-19 18:25:35,759 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]=== [2020-10-19 18:25:35,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:25:35,759 INFO L82 PathProgramCache]: Analyzing trace with hash -109597017, now seen corresponding path program 1 times [2020-10-19 18:25:35,760 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:25:35,760 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288143995] [2020-10-19 18:25:35,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:25:35,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:25:35,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:25:35,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:25:35,997 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:25:35,998 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288143995] [2020-10-19 18:25:35,998 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:25:35,998 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-19 18:25:35,998 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119357462] [2020-10-19 18:25:35,999 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-19 18:25:35,999 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:25:35,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-19 18:25:36,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-19 18:25:36,000 INFO L87 Difference]: Start difference. First operand 288 states and 315 transitions. Second operand 11 states. [2020-10-19 18:25:37,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:25:37,600 INFO L93 Difference]: Finished difference Result 356 states and 391 transitions. [2020-10-19 18:25:37,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-19 18:25:37,600 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 36 [2020-10-19 18:25:37,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:25:37,602 INFO L225 Difference]: With dead ends: 356 [2020-10-19 18:25:37,602 INFO L226 Difference]: Without dead ends: 356 [2020-10-19 18:25:37,603 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-10-19 18:25:37,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2020-10-19 18:25:37,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 289. [2020-10-19 18:25:37,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 289 states. [2020-10-19 18:25:37,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 317 transitions. [2020-10-19 18:25:37,615 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 317 transitions. Word has length 36 [2020-10-19 18:25:37,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:25:37,617 INFO L481 AbstractCegarLoop]: Abstraction has 289 states and 317 transitions. [2020-10-19 18:25:37,617 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-19 18:25:37,617 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 317 transitions. [2020-10-19 18:25:37,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-19 18:25:37,619 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:25:37,619 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] [2020-10-19 18:25:37,619 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-19 18:25:37,619 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]=== [2020-10-19 18:25:37,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:25:37,620 INFO L82 PathProgramCache]: Analyzing trace with hash -109597016, now seen corresponding path program 1 times [2020-10-19 18:25:37,620 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:25:37,620 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176690285] [2020-10-19 18:25:37,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:25:37,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:25:37,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:25:37,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:25:37,828 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:25:37,829 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176690285] [2020-10-19 18:25:37,829 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:25:37,829 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-19 18:25:37,829 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664431145] [2020-10-19 18:25:37,830 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-19 18:25:37,830 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:25:37,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-19 18:25:37,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-19 18:25:37,830 INFO L87 Difference]: Start difference. First operand 289 states and 317 transitions. Second operand 10 states. [2020-10-19 18:25:39,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:25:39,375 INFO L93 Difference]: Finished difference Result 369 states and 404 transitions. [2020-10-19 18:25:39,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-19 18:25:39,376 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 36 [2020-10-19 18:25:39,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:25:39,378 INFO L225 Difference]: With dead ends: 369 [2020-10-19 18:25:39,379 INFO L226 Difference]: Without dead ends: 369 [2020-10-19 18:25:39,379 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 [2020-10-19 18:25:39,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2020-10-19 18:25:39,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 289. [2020-10-19 18:25:39,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 289 states. [2020-10-19 18:25:39,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 316 transitions. [2020-10-19 18:25:39,386 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 316 transitions. Word has length 36 [2020-10-19 18:25:39,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:25:39,387 INFO L481 AbstractCegarLoop]: Abstraction has 289 states and 316 transitions. [2020-10-19 18:25:39,387 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-19 18:25:39,387 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 316 transitions. [2020-10-19 18:25:39,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-19 18:25:39,388 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:25:39,388 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] [2020-10-19 18:25:39,388 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-19 18:25:39,388 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]=== [2020-10-19 18:25:39,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:25:39,389 INFO L82 PathProgramCache]: Analyzing trace with hash 1983893577, now seen corresponding path program 1 times [2020-10-19 18:25:39,389 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:25:39,389 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753005595] [2020-10-19 18:25:39,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:25:39,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:25:39,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:25:39,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:25:39,535 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:25:39,535 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753005595] [2020-10-19 18:25:39,536 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:25:39,536 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-19 18:25:39,536 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766656675] [2020-10-19 18:25:39,537 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-19 18:25:39,537 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:25:39,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-19 18:25:39,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-19 18:25:39,538 INFO L87 Difference]: Start difference. First operand 289 states and 316 transitions. Second operand 11 states. [2020-10-19 18:25:41,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:25:41,217 INFO L93 Difference]: Finished difference Result 354 states and 389 transitions. [2020-10-19 18:25:41,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-19 18:25:41,218 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 36 [2020-10-19 18:25:41,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:25:41,220 INFO L225 Difference]: With dead ends: 354 [2020-10-19 18:25:41,220 INFO L226 Difference]: Without dead ends: 354 [2020-10-19 18:25:41,221 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-10-19 18:25:41,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2020-10-19 18:25:41,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 289. [2020-10-19 18:25:41,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 289 states. [2020-10-19 18:25:41,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 315 transitions. [2020-10-19 18:25:41,228 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 315 transitions. Word has length 36 [2020-10-19 18:25:41,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:25:41,228 INFO L481 AbstractCegarLoop]: Abstraction has 289 states and 315 transitions. [2020-10-19 18:25:41,228 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-19 18:25:41,229 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 315 transitions. [2020-10-19 18:25:41,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-19 18:25:41,229 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:25:41,229 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] [2020-10-19 18:25:41,229 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-19 18:25:41,230 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]=== [2020-10-19 18:25:41,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:25:41,230 INFO L82 PathProgramCache]: Analyzing trace with hash 1983893578, now seen corresponding path program 1 times [2020-10-19 18:25:41,230 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:25:41,230 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228431555] [2020-10-19 18:25:41,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:25:41,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:25:41,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:25:41,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:25:41,373 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:25:41,373 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228431555] [2020-10-19 18:25:41,373 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:25:41,374 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-19 18:25:41,374 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268452248] [2020-10-19 18:25:41,376 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-19 18:25:41,376 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:25:41,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-19 18:25:41,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-19 18:25:41,378 INFO L87 Difference]: Start difference. First operand 289 states and 315 transitions. Second operand 10 states. [2020-10-19 18:25:42,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:25:42,860 INFO L93 Difference]: Finished difference Result 367 states and 402 transitions. [2020-10-19 18:25:42,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-19 18:25:42,861 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 36 [2020-10-19 18:25:42,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:25:42,863 INFO L225 Difference]: With dead ends: 367 [2020-10-19 18:25:42,863 INFO L226 Difference]: Without dead ends: 367 [2020-10-19 18:25:42,864 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 [2020-10-19 18:25:42,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2020-10-19 18:25:42,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 289. [2020-10-19 18:25:42,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 289 states. [2020-10-19 18:25:42,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 314 transitions. [2020-10-19 18:25:42,871 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 314 transitions. Word has length 36 [2020-10-19 18:25:42,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:25:42,872 INFO L481 AbstractCegarLoop]: Abstraction has 289 states and 314 transitions. [2020-10-19 18:25:42,872 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-19 18:25:42,872 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 314 transitions. [2020-10-19 18:25:42,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-19 18:25:42,873 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:25:42,873 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] [2020-10-19 18:25:42,873 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-19 18:25:42,873 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]=== [2020-10-19 18:25:42,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:25:42,874 INFO L82 PathProgramCache]: Analyzing trace with hash 1789541438, now seen corresponding path program 1 times [2020-10-19 18:25:42,874 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:25:42,874 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766611886] [2020-10-19 18:25:42,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:25:42,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:25:42,892 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:25:42,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:25:42,908 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:25:42,953 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:25:42,953 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-19 18:25:42,953 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-19 18:25:42,998 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.10 06:25:42 BoogieIcfgContainer [2020-10-19 18:25:42,998 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-19 18:25:42,999 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-19 18:25:42,999 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-19 18:25:42,999 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-19 18:25:43,000 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:25:21" (3/4) ... [2020-10-19 18:25:43,002 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-19 18:25:43,068 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-19 18:25:43,069 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-19 18:25:43,074 INFO L168 Benchmark]: Toolchain (without parser) took 23091.36 ms. Allocated memory was 1.0 GB in the beginning and 1.5 GB in the end (delta: 435.2 MB). Free memory was 950.6 MB in the beginning and 913.3 MB in the end (delta: 37.2 MB). Peak memory consumption was 472.4 MB. Max. memory is 11.5 GB. [2020-10-19 18:25:43,074 INFO L168 Benchmark]: CDTParser took 0.64 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:25:43,078 INFO L168 Benchmark]: CACSL2BoogieTranslator took 759.20 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 148.4 MB). Free memory was 950.6 MB in the beginning and 1.1 GB in the end (delta: -160.2 MB). Peak memory consumption was 20.9 MB. Max. memory is 11.5 GB. [2020-10-19 18:25:43,078 INFO L168 Benchmark]: Boogie Preprocessor took 95.63 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:25:43,079 INFO L168 Benchmark]: RCFGBuilder took 1090.66 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 98.0 MB). Peak memory consumption was 98.0 MB. Max. memory is 11.5 GB. [2020-10-19 18:25:43,080 INFO L168 Benchmark]: TraceAbstraction took 21064.91 ms. Allocated memory was 1.2 GB in the beginning and 1.5 GB in the end (delta: 286.8 MB). Free memory was 1.0 GB in the beginning and 913.3 MB in the end (delta: 99.4 MB). Peak memory consumption was 386.2 MB. Max. memory is 11.5 GB. [2020-10-19 18:25:43,080 INFO L168 Benchmark]: Witness Printer took 69.91 ms. Allocated memory is still 1.5 GB. Free memory is still 913.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:25:43,085 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.64 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 759.20 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 148.4 MB). Free memory was 950.6 MB in the beginning and 1.1 GB in the end (delta: -160.2 MB). Peak memory consumption was 20.9 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 95.63 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 1090.66 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 98.0 MB). Peak memory consumption was 98.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 21064.91 ms. Allocated memory was 1.2 GB in the beginning and 1.5 GB in the end (delta: 286.8 MB). Free memory was 1.0 GB in the beginning and 913.3 MB in the end (delta: 99.4 MB). Peak memory consumption was 386.2 MB. Max. memory is 11.5 GB. * Witness Printer took 69.91 ms. Allocated memory is still 1.5 GB. Free memory is still 913.3 MB. There was no memory consumed. Max. memory is 11.5 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: 20.9s, OverallIterations: 19, TraceHistogramMax: 2, AutomataDifference: 18.2s, 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, 13.1s 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, 1.6s 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...