./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/forester-heap/sll-01-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 906a4fb5 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/forester-heap/sll-01-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2ea18b6ba0d977117db11fbdff34c486def646c3 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref) --- Real Ultimate output --- This is Ultimate 0.1.25-906a4fb [2020-10-19 18:13:20,553 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-19 18:13:20,556 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-19 18:13:20,597 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-19 18:13:20,598 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-19 18:13:20,607 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-19 18:13:20,610 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-19 18:13:20,613 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-19 18:13:20,616 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-19 18:13:20,619 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-19 18:13:20,621 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-19 18:13:20,623 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-19 18:13:20,623 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-19 18:13:20,628 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-19 18:13:20,629 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-19 18:13:20,632 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-19 18:13:20,633 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-19 18:13:20,634 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-19 18:13:20,637 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-19 18:13:20,644 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-19 18:13:20,647 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-19 18:13:20,648 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-19 18:13:20,650 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-19 18:13:20,651 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-19 18:13:20,664 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-19 18:13:20,664 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-19 18:13:20,665 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-19 18:13:20,668 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-19 18:13:20,668 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-19 18:13:20,669 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-19 18:13:20,669 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-19 18:13:20,673 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-19 18:13:20,674 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-19 18:13:20,675 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-19 18:13:20,676 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-19 18:13:20,676 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-19 18:13:20,677 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-19 18:13:20,677 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-19 18:13:20,677 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-19 18:13:20,678 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-19 18:13:20,679 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-19 18:13:20,680 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-10-19 18:13:20,720 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-19 18:13:20,721 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-19 18:13:20,723 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-19 18:13:20,723 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-19 18:13:20,723 INFO L138 SettingsManager]: * Use SBE=true [2020-10-19 18:13:20,724 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-19 18:13:20,724 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-19 18:13:20,724 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-19 18:13:20,725 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-19 18:13:20,725 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-19 18:13:20,726 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-19 18:13:20,726 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-10-19 18:13:20,727 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-10-19 18:13:20,727 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-10-19 18:13:20,727 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-19 18:13:20,728 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-10-19 18:13:20,728 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-19 18:13:20,728 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-19 18:13:20,729 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-19 18:13:20,729 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-19 18:13:20,729 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-19 18:13:20,729 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-19 18:13:20,730 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 18:13:20,730 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-19 18:13:20,730 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-19 18:13:20,731 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-19 18:13:20,731 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-19 18:13:20,731 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-19 18:13:20,731 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2ea18b6ba0d977117db11fbdff34c486def646c3 [2020-10-19 18:13:21,083 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-19 18:13:21,100 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-19 18:13:21,106 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-19 18:13:21,108 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-19 18:13:21,108 INFO L275 PluginConnector]: CDTParser initialized [2020-10-19 18:13:21,109 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/forester-heap/sll-01-2.i [2020-10-19 18:13:21,167 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a82854bcd/ca88960e066141fab37d38fbc4a8e241/FLAGda70ceb70 [2020-10-19 18:13:21,697 INFO L306 CDTParser]: Found 1 translation units. [2020-10-19 18:13:21,698 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-01-2.i [2020-10-19 18:13:21,724 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a82854bcd/ca88960e066141fab37d38fbc4a8e241/FLAGda70ceb70 [2020-10-19 18:13:22,017 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a82854bcd/ca88960e066141fab37d38fbc4a8e241 [2020-10-19 18:13:22,020 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-19 18:13:22,027 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-19 18:13:22,028 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-19 18:13:22,028 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-19 18:13:22,032 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-19 18:13:22,033 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:13:22" (1/1) ... [2020-10-19 18:13:22,036 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21367e29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:13:22, skipping insertion in model container [2020-10-19 18:13:22,037 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:13:22" (1/1) ... [2020-10-19 18:13:22,045 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-19 18:13:22,090 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 18:13:22,550 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:13:22,560 INFO L203 MainTranslator]: Completed pre-run [2020-10-19 18:13:22,625 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:13:22,679 INFO L208 MainTranslator]: Completed translation [2020-10-19 18:13:22,680 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:13:22 WrapperNode [2020-10-19 18:13:22,680 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-19 18:13:22,681 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-19 18:13:22,681 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-19 18:13:22,681 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-19 18:13:22,696 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:13:22" (1/1) ... [2020-10-19 18:13:22,696 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:13:22" (1/1) ... [2020-10-19 18:13:22,714 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:13:22" (1/1) ... [2020-10-19 18:13:22,714 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:13:22" (1/1) ... [2020-10-19 18:13:22,739 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:13:22" (1/1) ... [2020-10-19 18:13:22,755 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:13:22" (1/1) ... [2020-10-19 18:13:22,767 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:13:22" (1/1) ... [2020-10-19 18:13:22,781 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-19 18:13:22,782 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-19 18:13:22,783 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-19 18:13:22,783 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-19 18:13:22,785 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:13:22" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 18:13:22,847 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-19 18:13:22,847 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-19 18:13:22,847 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-19 18:13:22,847 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-19 18:13:22,849 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-19 18:13:22,850 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-19 18:13:22,850 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-19 18:13:22,850 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-19 18:13:22,851 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-19 18:13:22,851 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-19 18:13:22,852 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-19 18:13:22,853 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-19 18:13:22,853 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-19 18:13:22,853 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-19 18:13:22,853 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-19 18:13:22,854 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-19 18:13:22,857 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-19 18:13:22,857 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-19 18:13:22,858 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-19 18:13:22,858 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-19 18:13:22,858 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-19 18:13:22,858 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-19 18:13:22,858 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-19 18:13:22,859 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-19 18:13:22,859 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-19 18:13:22,861 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-19 18:13:22,861 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-19 18:13:22,861 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-19 18:13:22,862 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-19 18:13:22,862 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-19 18:13:22,862 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-19 18:13:22,862 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-19 18:13:22,862 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-19 18:13:22,863 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-19 18:13:22,863 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-19 18:13:22,863 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-19 18:13:22,863 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-19 18:13:22,863 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-19 18:13:22,864 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-19 18:13:22,864 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-19 18:13:22,864 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-19 18:13:22,864 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-19 18:13:22,866 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-19 18:13:22,866 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-19 18:13:22,868 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-19 18:13:22,868 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-19 18:13:22,869 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-19 18:13:22,869 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-19 18:13:22,869 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-19 18:13:22,869 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-19 18:13:22,869 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-19 18:13:22,870 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-19 18:13:22,870 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-19 18:13:22,870 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-19 18:13:22,870 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-19 18:13:22,871 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-19 18:13:22,871 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-19 18:13:22,871 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-19 18:13:22,871 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-19 18:13:22,872 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-19 18:13:22,872 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-19 18:13:22,872 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-19 18:13:22,872 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-19 18:13:22,872 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-19 18:13:22,873 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-19 18:13:22,873 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-19 18:13:22,874 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-19 18:13:22,874 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-19 18:13:22,874 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-19 18:13:22,875 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-19 18:13:22,875 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-19 18:13:22,875 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-19 18:13:22,876 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-19 18:13:22,876 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-19 18:13:22,877 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-19 18:13:22,878 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-19 18:13:22,878 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-19 18:13:22,878 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-19 18:13:22,878 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-19 18:13:22,879 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-19 18:13:22,879 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-19 18:13:22,879 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-19 18:13:22,879 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-19 18:13:22,879 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-19 18:13:22,880 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-19 18:13:22,880 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-19 18:13:22,880 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-19 18:13:22,880 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-19 18:13:22,880 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-19 18:13:22,881 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-19 18:13:22,881 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-19 18:13:22,881 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-19 18:13:22,881 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-19 18:13:22,881 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-19 18:13:22,882 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-19 18:13:22,882 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-19 18:13:22,882 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-19 18:13:22,882 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-19 18:13:22,882 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-19 18:13:22,883 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-19 18:13:22,883 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-19 18:13:22,883 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-19 18:13:22,883 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-19 18:13:22,883 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-19 18:13:22,884 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-19 18:13:22,884 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-19 18:13:22,884 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-19 18:13:22,884 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-19 18:13:22,884 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-19 18:13:22,884 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-19 18:13:22,885 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-19 18:13:22,885 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-19 18:13:22,885 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-19 18:13:22,885 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-19 18:13:22,886 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-19 18:13:22,886 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-19 18:13:22,886 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-19 18:13:22,887 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-19 18:13:22,887 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-19 18:13:22,887 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-19 18:13:22,887 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-19 18:13:22,888 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-19 18:13:22,888 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-19 18:13:23,701 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-19 18:13:23,701 INFO L298 CfgBuilder]: Removed 30 assume(true) statements. [2020-10-19 18:13:23,704 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:13:23 BoogieIcfgContainer [2020-10-19 18:13:23,704 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-19 18:13:23,706 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-19 18:13:23,706 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-19 18:13:23,710 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-19 18:13:23,710 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.10 06:13:22" (1/3) ... [2020-10-19 18:13:23,711 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@442d978a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 06:13:23, skipping insertion in model container [2020-10-19 18:13:23,712 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:13:22" (2/3) ... [2020-10-19 18:13:23,712 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@442d978a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 06:13:23, skipping insertion in model container [2020-10-19 18:13:23,712 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:13:23" (3/3) ... [2020-10-19 18:13:23,714 INFO L111 eAbstractionObserver]: Analyzing ICFG sll-01-2.i [2020-10-19 18:13:23,727 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-19 18:13:23,736 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 68 error locations. [2020-10-19 18:13:23,752 INFO L253 AbstractCegarLoop]: Starting to check reachability of 68 error locations. [2020-10-19 18:13:23,775 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-19 18:13:23,775 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-19 18:13:23,775 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-19 18:13:23,776 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-19 18:13:23,776 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-19 18:13:23,776 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-19 18:13:23,776 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-19 18:13:23,777 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-19 18:13:23,802 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states. [2020-10-19 18:13:23,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-19 18:13:23,812 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:13:23,814 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:13:23,814 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr66ENSURES_VIOLATIONMEMORY_LEAK, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr65ASSERT_VIOLATIONMEMORY_FREE, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr59ASSERT_VIOLATIONMEMORY_FREE, mainErr61REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr60ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr64ASSERT_VIOLATIONMEMORY_FREE, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr62REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr56REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-10-19 18:13:23,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:13:23,821 INFO L82 PathProgramCache]: Analyzing trace with hash 1936971074, now seen corresponding path program 1 times [2020-10-19 18:13:23,832 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:13:23,833 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64092850] [2020-10-19 18:13:23,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:13:23,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:13:24,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:13:24,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:13:24,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:13:24,073 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64092850] [2020-10-19 18:13:24,074 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:13:24,075 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 18:13:24,076 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526165042] [2020-10-19 18:13:24,081 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:13:24,082 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:13:24,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:13:24,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:13:24,107 INFO L87 Difference]: Start difference. First operand 202 states. Second operand 4 states. [2020-10-19 18:13:24,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:13:24,626 INFO L93 Difference]: Finished difference Result 188 states and 211 transitions. [2020-10-19 18:13:24,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:13:24,628 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-10-19 18:13:24,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:13:24,642 INFO L225 Difference]: With dead ends: 188 [2020-10-19 18:13:24,643 INFO L226 Difference]: Without dead ends: 184 [2020-10-19 18:13:24,645 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 18:13:24,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2020-10-19 18:13:24,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 179. [2020-10-19 18:13:24,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2020-10-19 18:13:24,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 204 transitions. [2020-10-19 18:13:24,704 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 204 transitions. Word has length 7 [2020-10-19 18:13:24,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:13:24,705 INFO L481 AbstractCegarLoop]: Abstraction has 179 states and 204 transitions. [2020-10-19 18:13:24,705 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:13:24,705 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 204 transitions. [2020-10-19 18:13:24,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-19 18:13:24,706 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:13:24,706 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:13:24,707 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-19 18:13:24,707 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr66ENSURES_VIOLATIONMEMORY_LEAK, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr65ASSERT_VIOLATIONMEMORY_FREE, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr59ASSERT_VIOLATIONMEMORY_FREE, mainErr61REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr60ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr64ASSERT_VIOLATIONMEMORY_FREE, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr62REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr56REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-10-19 18:13:24,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:13:24,708 INFO L82 PathProgramCache]: Analyzing trace with hash 1936971075, now seen corresponding path program 1 times [2020-10-19 18:13:24,708 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:13:24,708 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463158603] [2020-10-19 18:13:24,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:13:24,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:13:24,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:13:24,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:13:24,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:13:24,803 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463158603] [2020-10-19 18:13:24,803 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:13:24,803 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 18:13:24,804 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559346006] [2020-10-19 18:13:24,806 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:13:24,806 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:13:24,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:13:24,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:13:24,807 INFO L87 Difference]: Start difference. First operand 179 states and 204 transitions. Second operand 4 states. [2020-10-19 18:13:25,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:13:25,230 INFO L93 Difference]: Finished difference Result 206 states and 233 transitions. [2020-10-19 18:13:25,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:13:25,231 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-10-19 18:13:25,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:13:25,234 INFO L225 Difference]: With dead ends: 206 [2020-10-19 18:13:25,235 INFO L226 Difference]: Without dead ends: 206 [2020-10-19 18:13:25,236 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 18:13:25,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-10-19 18:13:25,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 189. [2020-10-19 18:13:25,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2020-10-19 18:13:25,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 225 transitions. [2020-10-19 18:13:25,252 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 225 transitions. Word has length 7 [2020-10-19 18:13:25,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:13:25,252 INFO L481 AbstractCegarLoop]: Abstraction has 189 states and 225 transitions. [2020-10-19 18:13:25,252 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:13:25,253 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 225 transitions. [2020-10-19 18:13:25,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-19 18:13:25,253 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:13:25,254 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:13:25,254 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-19 18:13:25,255 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr66ENSURES_VIOLATIONMEMORY_LEAK, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr65ASSERT_VIOLATIONMEMORY_FREE, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr59ASSERT_VIOLATIONMEMORY_FREE, mainErr61REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr60ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr64ASSERT_VIOLATIONMEMORY_FREE, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr62REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr56REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-10-19 18:13:25,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:13:25,255 INFO L82 PathProgramCache]: Analyzing trace with hash 1059391795, now seen corresponding path program 1 times [2020-10-19 18:13:25,256 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:13:25,256 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528834531] [2020-10-19 18:13:25,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:13:25,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:13:25,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:13:25,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:13:25,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:13:25,326 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528834531] [2020-10-19 18:13:25,326 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:13:25,326 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 18:13:25,326 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598925925] [2020-10-19 18:13:25,327 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:13:25,327 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:13:25,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:13:25,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:13:25,328 INFO L87 Difference]: Start difference. First operand 189 states and 225 transitions. Second operand 4 states. [2020-10-19 18:13:25,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:13:25,660 INFO L93 Difference]: Finished difference Result 202 states and 228 transitions. [2020-10-19 18:13:25,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:13:25,662 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-10-19 18:13:25,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:13:25,664 INFO L225 Difference]: With dead ends: 202 [2020-10-19 18:13:25,664 INFO L226 Difference]: Without dead ends: 202 [2020-10-19 18:13:25,667 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 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 18:13:25,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-10-19 18:13:25,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 188. [2020-10-19 18:13:25,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2020-10-19 18:13:25,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 222 transitions. [2020-10-19 18:13:25,689 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 222 transitions. Word has length 11 [2020-10-19 18:13:25,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:13:25,689 INFO L481 AbstractCegarLoop]: Abstraction has 188 states and 222 transitions. [2020-10-19 18:13:25,689 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:13:25,690 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 222 transitions. [2020-10-19 18:13:25,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-19 18:13:25,690 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:13:25,691 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:13:25,691 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-19 18:13:25,691 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr66ENSURES_VIOLATIONMEMORY_LEAK, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr65ASSERT_VIOLATIONMEMORY_FREE, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr59ASSERT_VIOLATIONMEMORY_FREE, mainErr61REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr60ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr64ASSERT_VIOLATIONMEMORY_FREE, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr62REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr56REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-10-19 18:13:25,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:13:25,692 INFO L82 PathProgramCache]: Analyzing trace with hash 921730369, now seen corresponding path program 1 times [2020-10-19 18:13:25,692 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:13:25,693 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186289303] [2020-10-19 18:13:25,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:13:25,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:13:25,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:13:25,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:13:25,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:13:25,779 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186289303] [2020-10-19 18:13:25,779 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:13:25,779 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-19 18:13:25,780 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014020117] [2020-10-19 18:13:25,780 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-19 18:13:25,781 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:13:25,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-19 18:13:25,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-19 18:13:25,782 INFO L87 Difference]: Start difference. First operand 188 states and 222 transitions. Second operand 6 states. [2020-10-19 18:13:26,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:13:26,563 INFO L93 Difference]: Finished difference Result 321 states and 376 transitions. [2020-10-19 18:13:26,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-19 18:13:26,564 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-10-19 18:13:26,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:13:26,567 INFO L225 Difference]: With dead ends: 321 [2020-10-19 18:13:26,567 INFO L226 Difference]: Without dead ends: 321 [2020-10-19 18:13:26,572 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-19 18:13:26,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2020-10-19 18:13:26,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 187. [2020-10-19 18:13:26,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2020-10-19 18:13:26,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 221 transitions. [2020-10-19 18:13:26,595 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 221 transitions. Word has length 14 [2020-10-19 18:13:26,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:13:26,596 INFO L481 AbstractCegarLoop]: Abstraction has 187 states and 221 transitions. [2020-10-19 18:13:26,596 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-19 18:13:26,596 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 221 transitions. [2020-10-19 18:13:26,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-19 18:13:26,598 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:13:26,598 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:13:26,598 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-19 18:13:26,599 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr66ENSURES_VIOLATIONMEMORY_LEAK, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr65ASSERT_VIOLATIONMEMORY_FREE, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr59ASSERT_VIOLATIONMEMORY_FREE, mainErr61REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr60ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr64ASSERT_VIOLATIONMEMORY_FREE, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr62REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr56REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-10-19 18:13:26,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:13:26,600 INFO L82 PathProgramCache]: Analyzing trace with hash 921730370, now seen corresponding path program 1 times [2020-10-19 18:13:26,603 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:13:26,603 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196279205] [2020-10-19 18:13:26,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:13:26,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:13:26,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:13:26,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:13:26,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:13:26,739 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196279205] [2020-10-19 18:13:26,740 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:13:26,740 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-19 18:13:26,740 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039324353] [2020-10-19 18:13:26,741 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-19 18:13:26,741 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:13:26,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-19 18:13:26,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-19 18:13:26,742 INFO L87 Difference]: Start difference. First operand 187 states and 221 transitions. Second operand 6 states. [2020-10-19 18:13:27,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:13:27,506 INFO L93 Difference]: Finished difference Result 348 states and 416 transitions. [2020-10-19 18:13:27,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-19 18:13:27,506 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-10-19 18:13:27,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:13:27,509 INFO L225 Difference]: With dead ends: 348 [2020-10-19 18:13:27,509 INFO L226 Difference]: Without dead ends: 348 [2020-10-19 18:13:27,509 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-19 18:13:27,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2020-10-19 18:13:27,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 186. [2020-10-19 18:13:27,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2020-10-19 18:13:27,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 220 transitions. [2020-10-19 18:13:27,519 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 220 transitions. Word has length 14 [2020-10-19 18:13:27,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:13:27,519 INFO L481 AbstractCegarLoop]: Abstraction has 186 states and 220 transitions. [2020-10-19 18:13:27,520 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-19 18:13:27,520 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 220 transitions. [2020-10-19 18:13:27,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-19 18:13:27,521 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:13:27,521 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:13:27,521 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-19 18:13:27,522 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr66ENSURES_VIOLATIONMEMORY_LEAK, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr65ASSERT_VIOLATIONMEMORY_FREE, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr59ASSERT_VIOLATIONMEMORY_FREE, mainErr61REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr60ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr64ASSERT_VIOLATIONMEMORY_FREE, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr62REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr56REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-10-19 18:13:27,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:13:27,522 INFO L82 PathProgramCache]: Analyzing trace with hash 1543520439, now seen corresponding path program 1 times [2020-10-19 18:13:27,523 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:13:27,523 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087432931] [2020-10-19 18:13:27,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:13:27,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:13:27,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:13:27,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:13:27,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:13:27,653 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087432931] [2020-10-19 18:13:27,654 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:13:27,654 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-19 18:13:27,654 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759405803] [2020-10-19 18:13:27,654 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-19 18:13:27,655 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:13:27,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-19 18:13:27,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-19 18:13:27,656 INFO L87 Difference]: Start difference. First operand 186 states and 220 transitions. Second operand 9 states. [2020-10-19 18:13:28,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:13:28,768 INFO L93 Difference]: Finished difference Result 320 states and 374 transitions. [2020-10-19 18:13:28,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-19 18:13:28,769 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 17 [2020-10-19 18:13:28,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:13:28,771 INFO L225 Difference]: With dead ends: 320 [2020-10-19 18:13:28,772 INFO L226 Difference]: Without dead ends: 320 [2020-10-19 18:13:28,772 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2020-10-19 18:13:28,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2020-10-19 18:13:28,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 185. [2020-10-19 18:13:28,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2020-10-19 18:13:28,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 219 transitions. [2020-10-19 18:13:28,780 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 219 transitions. Word has length 17 [2020-10-19 18:13:28,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:13:28,781 INFO L481 AbstractCegarLoop]: Abstraction has 185 states and 219 transitions. [2020-10-19 18:13:28,781 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-19 18:13:28,781 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 219 transitions. [2020-10-19 18:13:28,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-19 18:13:28,782 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:13:28,782 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:13:28,782 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-19 18:13:28,783 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr66ENSURES_VIOLATIONMEMORY_LEAK, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr65ASSERT_VIOLATIONMEMORY_FREE, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr59ASSERT_VIOLATIONMEMORY_FREE, mainErr61REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr60ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr64ASSERT_VIOLATIONMEMORY_FREE, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr62REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr56REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-10-19 18:13:28,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:13:28,784 INFO L82 PathProgramCache]: Analyzing trace with hash 1543520440, now seen corresponding path program 1 times [2020-10-19 18:13:28,784 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:13:28,784 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895343591] [2020-10-19 18:13:28,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:13:28,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:13:28,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:13:28,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:13:28,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:13:28,931 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895343591] [2020-10-19 18:13:28,932 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:13:28,932 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-19 18:13:28,932 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875945888] [2020-10-19 18:13:28,933 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-19 18:13:28,933 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:13:28,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-19 18:13:28,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-19 18:13:28,934 INFO L87 Difference]: Start difference. First operand 185 states and 219 transitions. Second operand 9 states. [2020-10-19 18:13:30,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:13:30,207 INFO L93 Difference]: Finished difference Result 321 states and 375 transitions. [2020-10-19 18:13:30,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-19 18:13:30,208 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 17 [2020-10-19 18:13:30,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:13:30,212 INFO L225 Difference]: With dead ends: 321 [2020-10-19 18:13:30,212 INFO L226 Difference]: Without dead ends: 321 [2020-10-19 18:13:30,212 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2020-10-19 18:13:30,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2020-10-19 18:13:30,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 184. [2020-10-19 18:13:30,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2020-10-19 18:13:30,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 218 transitions. [2020-10-19 18:13:30,220 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 218 transitions. Word has length 17 [2020-10-19 18:13:30,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:13:30,220 INFO L481 AbstractCegarLoop]: Abstraction has 184 states and 218 transitions. [2020-10-19 18:13:30,220 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-19 18:13:30,221 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 218 transitions. [2020-10-19 18:13:30,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-19 18:13:30,222 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:13:30,222 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:13:30,222 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-19 18:13:30,223 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr66ENSURES_VIOLATIONMEMORY_LEAK, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr65ASSERT_VIOLATIONMEMORY_FREE, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr59ASSERT_VIOLATIONMEMORY_FREE, mainErr61REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr60ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr64ASSERT_VIOLATIONMEMORY_FREE, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr62REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr56REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-10-19 18:13:30,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:13:30,223 INFO L82 PathProgramCache]: Analyzing trace with hash 293892350, now seen corresponding path program 1 times [2020-10-19 18:13:30,223 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:13:30,224 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331264145] [2020-10-19 18:13:30,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:13:30,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:13:30,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:13:30,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:13:30,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:13:30,274 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331264145] [2020-10-19 18:13:30,274 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:13:30,274 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 18:13:30,275 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603776316] [2020-10-19 18:13:30,275 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:13:30,275 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:13:30,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:13:30,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:13:30,276 INFO L87 Difference]: Start difference. First operand 184 states and 218 transitions. Second operand 4 states. [2020-10-19 18:13:30,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:13:30,494 INFO L93 Difference]: Finished difference Result 185 states and 219 transitions. [2020-10-19 18:13:30,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:13:30,495 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-10-19 18:13:30,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:13:30,496 INFO L225 Difference]: With dead ends: 185 [2020-10-19 18:13:30,497 INFO L226 Difference]: Without dead ends: 185 [2020-10-19 18:13:30,497 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 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 18:13:30,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-10-19 18:13:30,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185. [2020-10-19 18:13:30,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2020-10-19 18:13:30,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 219 transitions. [2020-10-19 18:13:30,508 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 219 transitions. Word has length 19 [2020-10-19 18:13:30,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:13:30,509 INFO L481 AbstractCegarLoop]: Abstraction has 185 states and 219 transitions. [2020-10-19 18:13:30,509 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:13:30,509 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 219 transitions. [2020-10-19 18:13:30,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-19 18:13:30,510 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:13:30,510 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:13:30,510 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-19 18:13:30,511 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr66ENSURES_VIOLATIONMEMORY_LEAK, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr65ASSERT_VIOLATIONMEMORY_FREE, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr59ASSERT_VIOLATIONMEMORY_FREE, mainErr61REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr60ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr64ASSERT_VIOLATIONMEMORY_FREE, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr62REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr56REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-10-19 18:13:30,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:13:30,514 INFO L82 PathProgramCache]: Analyzing trace with hash 188085731, now seen corresponding path program 1 times [2020-10-19 18:13:30,515 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:13:30,515 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836018477] [2020-10-19 18:13:30,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:13:30,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:13:30,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:13:30,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:13:30,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:13:30,673 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836018477] [2020-10-19 18:13:30,673 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:13:30,673 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-19 18:13:30,674 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496067090] [2020-10-19 18:13:30,675 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-19 18:13:30,676 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:13:30,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-19 18:13:30,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-19 18:13:30,678 INFO L87 Difference]: Start difference. First operand 185 states and 219 transitions. Second operand 8 states. [2020-10-19 18:13:31,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:13:31,240 INFO L93 Difference]: Finished difference Result 270 states and 318 transitions. [2020-10-19 18:13:31,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-19 18:13:31,241 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 21 [2020-10-19 18:13:31,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:13:31,244 INFO L225 Difference]: With dead ends: 270 [2020-10-19 18:13:31,244 INFO L226 Difference]: Without dead ends: 270 [2020-10-19 18:13:31,245 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2020-10-19 18:13:31,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2020-10-19 18:13:31,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 183. [2020-10-19 18:13:31,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2020-10-19 18:13:31,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 216 transitions. [2020-10-19 18:13:31,251 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 216 transitions. Word has length 21 [2020-10-19 18:13:31,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:13:31,252 INFO L481 AbstractCegarLoop]: Abstraction has 183 states and 216 transitions. [2020-10-19 18:13:31,252 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-19 18:13:31,252 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 216 transitions. [2020-10-19 18:13:31,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-19 18:13:31,253 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:13:31,253 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:13:31,253 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-19 18:13:31,254 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr66ENSURES_VIOLATIONMEMORY_LEAK, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr65ASSERT_VIOLATIONMEMORY_FREE, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr59ASSERT_VIOLATIONMEMORY_FREE, mainErr61REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr60ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr64ASSERT_VIOLATIONMEMORY_FREE, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr62REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr56REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-10-19 18:13:31,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:13:31,254 INFO L82 PathProgramCache]: Analyzing trace with hash -1260873329, now seen corresponding path program 1 times [2020-10-19 18:13:31,254 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:13:31,255 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305337834] [2020-10-19 18:13:31,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:13:31,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:13:31,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:13:31,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:13:31,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:13:31,341 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305337834] [2020-10-19 18:13:31,341 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:13:31,342 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-19 18:13:31,342 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711270570] [2020-10-19 18:13:31,342 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-19 18:13:31,343 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:13:31,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-19 18:13:31,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-19 18:13:31,347 INFO L87 Difference]: Start difference. First operand 183 states and 216 transitions. Second operand 6 states. [2020-10-19 18:13:31,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:13:31,767 INFO L93 Difference]: Finished difference Result 271 states and 318 transitions. [2020-10-19 18:13:31,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-19 18:13:31,772 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2020-10-19 18:13:31,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:13:31,774 INFO L225 Difference]: With dead ends: 271 [2020-10-19 18:13:31,774 INFO L226 Difference]: Without dead ends: 271 [2020-10-19 18:13:31,775 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-19 18:13:31,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2020-10-19 18:13:31,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 186. [2020-10-19 18:13:31,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2020-10-19 18:13:31,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 219 transitions. [2020-10-19 18:13:31,781 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 219 transitions. Word has length 21 [2020-10-19 18:13:31,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:13:31,782 INFO L481 AbstractCegarLoop]: Abstraction has 186 states and 219 transitions. [2020-10-19 18:13:31,782 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-19 18:13:31,782 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 219 transitions. [2020-10-19 18:13:31,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-19 18:13:31,783 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:13:31,784 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:13:31,784 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-19 18:13:31,785 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr66ENSURES_VIOLATIONMEMORY_LEAK, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr65ASSERT_VIOLATIONMEMORY_FREE, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr59ASSERT_VIOLATIONMEMORY_FREE, mainErr61REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr60ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr64ASSERT_VIOLATIONMEMORY_FREE, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr62REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr56REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-10-19 18:13:31,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:13:31,785 INFO L82 PathProgramCache]: Analyzing trace with hash 138180916, now seen corresponding path program 1 times [2020-10-19 18:13:31,785 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:13:31,786 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412317372] [2020-10-19 18:13:31,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:13:31,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:13:31,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:13:31,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:13:31,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:13:31,853 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412317372] [2020-10-19 18:13:31,853 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:13:31,853 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 18:13:31,854 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571037321] [2020-10-19 18:13:31,854 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-19 18:13:31,855 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:13:31,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-19 18:13:31,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-19 18:13:31,856 INFO L87 Difference]: Start difference. First operand 186 states and 219 transitions. Second operand 5 states. [2020-10-19 18:13:32,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:13:32,231 INFO L93 Difference]: Finished difference Result 182 states and 213 transitions. [2020-10-19 18:13:32,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-19 18:13:32,232 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2020-10-19 18:13:32,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:13:32,233 INFO L225 Difference]: With dead ends: 182 [2020-10-19 18:13:32,233 INFO L226 Difference]: Without dead ends: 182 [2020-10-19 18:13:32,234 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-19 18:13:32,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-10-19 18:13:32,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 177. [2020-10-19 18:13:32,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2020-10-19 18:13:32,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 210 transitions. [2020-10-19 18:13:32,239 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 210 transitions. Word has length 23 [2020-10-19 18:13:32,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:13:32,240 INFO L481 AbstractCegarLoop]: Abstraction has 177 states and 210 transitions. [2020-10-19 18:13:32,240 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-19 18:13:32,240 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 210 transitions. [2020-10-19 18:13:32,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-19 18:13:32,243 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:13:32,244 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:13:32,244 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-19 18:13:32,244 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr66ENSURES_VIOLATIONMEMORY_LEAK, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr65ASSERT_VIOLATIONMEMORY_FREE, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr59ASSERT_VIOLATIONMEMORY_FREE, mainErr61REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr60ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr64ASSERT_VIOLATIONMEMORY_FREE, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr62REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr56REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-10-19 18:13:32,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:13:32,245 INFO L82 PathProgramCache]: Analyzing trace with hash 138180917, now seen corresponding path program 1 times [2020-10-19 18:13:32,245 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:13:32,246 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045756225] [2020-10-19 18:13:32,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:13:32,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:13:32,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:13:32,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:13:32,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:13:32,345 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045756225] [2020-10-19 18:13:32,345 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:13:32,345 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-19 18:13:32,345 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754574661] [2020-10-19 18:13:32,346 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-19 18:13:32,346 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:13:32,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-19 18:13:32,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-19 18:13:32,347 INFO L87 Difference]: Start difference. First operand 177 states and 210 transitions. Second operand 7 states. [2020-10-19 18:13:32,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:13:32,831 INFO L93 Difference]: Finished difference Result 230 states and 264 transitions. [2020-10-19 18:13:32,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-19 18:13:32,832 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-10-19 18:13:32,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:13:32,836 INFO L225 Difference]: With dead ends: 230 [2020-10-19 18:13:32,836 INFO L226 Difference]: Without dead ends: 230 [2020-10-19 18:13:32,836 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-19 18:13:32,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2020-10-19 18:13:32,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 200. [2020-10-19 18:13:32,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2020-10-19 18:13:32,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 248 transitions. [2020-10-19 18:13:32,844 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 248 transitions. Word has length 23 [2020-10-19 18:13:32,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:13:32,844 INFO L481 AbstractCegarLoop]: Abstraction has 200 states and 248 transitions. [2020-10-19 18:13:32,844 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-19 18:13:32,845 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 248 transitions. [2020-10-19 18:13:32,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-19 18:13:32,847 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:13:32,847 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:13:32,848 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-19 18:13:32,848 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr66ENSURES_VIOLATIONMEMORY_LEAK, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr65ASSERT_VIOLATIONMEMORY_FREE, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr59ASSERT_VIOLATIONMEMORY_FREE, mainErr61REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr60ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr64ASSERT_VIOLATIONMEMORY_FREE, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr62REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr56REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-10-19 18:13:32,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:13:32,849 INFO L82 PathProgramCache]: Analyzing trace with hash 955958233, now seen corresponding path program 1 times [2020-10-19 18:13:32,849 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:13:32,849 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737474560] [2020-10-19 18:13:32,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:13:32,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:13:32,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:13:32,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:13:32,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:13:32,913 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737474560] [2020-10-19 18:13:32,913 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:13:32,914 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-19 18:13:32,914 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336320187] [2020-10-19 18:13:32,914 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-19 18:13:32,915 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:13:32,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-19 18:13:32,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-19 18:13:32,915 INFO L87 Difference]: Start difference. First operand 200 states and 248 transitions. Second operand 5 states. [2020-10-19 18:13:33,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:13:33,222 INFO L93 Difference]: Finished difference Result 226 states and 258 transitions. [2020-10-19 18:13:33,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-19 18:13:33,222 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2020-10-19 18:13:33,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:13:33,224 INFO L225 Difference]: With dead ends: 226 [2020-10-19 18:13:33,224 INFO L226 Difference]: Without dead ends: 226 [2020-10-19 18:13:33,224 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-19 18:13:33,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-10-19 18:13:33,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 199. [2020-10-19 18:13:33,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2020-10-19 18:13:33,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 245 transitions. [2020-10-19 18:13:33,231 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 245 transitions. Word has length 27 [2020-10-19 18:13:33,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:13:33,231 INFO L481 AbstractCegarLoop]: Abstraction has 199 states and 245 transitions. [2020-10-19 18:13:33,231 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-19 18:13:33,232 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 245 transitions. [2020-10-19 18:13:33,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-19 18:13:33,233 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:13:33,233 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:13:33,233 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-19 18:13:33,233 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr66ENSURES_VIOLATIONMEMORY_LEAK, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr65ASSERT_VIOLATIONMEMORY_FREE, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr59ASSERT_VIOLATIONMEMORY_FREE, mainErr61REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr60ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr64ASSERT_VIOLATIONMEMORY_FREE, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr62REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr56REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-10-19 18:13:33,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:13:33,234 INFO L82 PathProgramCache]: Analyzing trace with hash 1969073560, now seen corresponding path program 1 times [2020-10-19 18:13:33,234 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:13:33,234 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779513745] [2020-10-19 18:13:33,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:13:33,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:13:33,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:13:33,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:13:33,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:13:33,321 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779513745] [2020-10-19 18:13:33,321 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:13:33,321 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-19 18:13:33,322 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745998237] [2020-10-19 18:13:33,322 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-19 18:13:33,322 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:13:33,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-19 18:13:33,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-19 18:13:33,323 INFO L87 Difference]: Start difference. First operand 199 states and 245 transitions. Second operand 7 states. [2020-10-19 18:13:33,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:13:33,942 INFO L93 Difference]: Finished difference Result 288 states and 361 transitions. [2020-10-19 18:13:33,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-19 18:13:33,942 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 26 [2020-10-19 18:13:33,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:13:33,944 INFO L225 Difference]: With dead ends: 288 [2020-10-19 18:13:33,944 INFO L226 Difference]: Without dead ends: 288 [2020-10-19 18:13:33,945 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-19 18:13:33,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2020-10-19 18:13:33,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 198. [2020-10-19 18:13:33,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2020-10-19 18:13:33,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 244 transitions. [2020-10-19 18:13:33,951 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 244 transitions. Word has length 26 [2020-10-19 18:13:33,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:13:33,952 INFO L481 AbstractCegarLoop]: Abstraction has 198 states and 244 transitions. [2020-10-19 18:13:33,952 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-19 18:13:33,952 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 244 transitions. [2020-10-19 18:13:33,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-19 18:13:33,953 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:13:33,953 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:13:33,953 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-19 18:13:33,955 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr66ENSURES_VIOLATIONMEMORY_LEAK, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr65ASSERT_VIOLATIONMEMORY_FREE, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr59ASSERT_VIOLATIONMEMORY_FREE, mainErr61REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr60ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr64ASSERT_VIOLATIONMEMORY_FREE, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr62REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr56REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-10-19 18:13:33,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:13:33,956 INFO L82 PathProgramCache]: Analyzing trace with hash 1969073561, now seen corresponding path program 1 times [2020-10-19 18:13:33,956 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:13:33,956 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386807562] [2020-10-19 18:13:33,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:13:33,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:13:34,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:13:34,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:13:34,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:13:34,036 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386807562] [2020-10-19 18:13:34,037 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:13:34,037 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-19 18:13:34,037 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601686162] [2020-10-19 18:13:34,037 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-19 18:13:34,038 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:13:34,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-19 18:13:34,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-19 18:13:34,038 INFO L87 Difference]: Start difference. First operand 198 states and 244 transitions. Second operand 7 states. [2020-10-19 18:13:34,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:13:34,712 INFO L93 Difference]: Finished difference Result 308 states and 392 transitions. [2020-10-19 18:13:34,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-19 18:13:34,713 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 26 [2020-10-19 18:13:34,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:13:34,716 INFO L225 Difference]: With dead ends: 308 [2020-10-19 18:13:34,716 INFO L226 Difference]: Without dead ends: 308 [2020-10-19 18:13:34,717 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-19 18:13:34,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2020-10-19 18:13:34,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 185. [2020-10-19 18:13:34,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2020-10-19 18:13:34,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 230 transitions. [2020-10-19 18:13:34,723 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 230 transitions. Word has length 26 [2020-10-19 18:13:34,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:13:34,723 INFO L481 AbstractCegarLoop]: Abstraction has 185 states and 230 transitions. [2020-10-19 18:13:34,723 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-19 18:13:34,723 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 230 transitions. [2020-10-19 18:13:34,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-19 18:13:34,724 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:13:34,725 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:13:34,725 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-19 18:13:34,725 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr66ENSURES_VIOLATIONMEMORY_LEAK, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr65ASSERT_VIOLATIONMEMORY_FREE, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr59ASSERT_VIOLATIONMEMORY_FREE, mainErr61REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr60ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr64ASSERT_VIOLATIONMEMORY_FREE, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr62REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr56REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-10-19 18:13:34,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:13:34,726 INFO L82 PathProgramCache]: Analyzing trace with hash 223014284, now seen corresponding path program 1 times [2020-10-19 18:13:34,726 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:13:34,726 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240762754] [2020-10-19 18:13:34,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:13:34,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:13:34,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:13:34,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:13:34,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:13:34,792 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240762754] [2020-10-19 18:13:34,792 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:13:34,793 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-19 18:13:34,793 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242011994] [2020-10-19 18:13:34,793 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-19 18:13:34,794 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:13:34,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-19 18:13:34,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-19 18:13:34,794 INFO L87 Difference]: Start difference. First operand 185 states and 230 transitions. Second operand 7 states. [2020-10-19 18:13:35,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:13:35,280 INFO L93 Difference]: Finished difference Result 306 states and 388 transitions. [2020-10-19 18:13:35,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-19 18:13:35,287 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 30 [2020-10-19 18:13:35,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:13:35,289 INFO L225 Difference]: With dead ends: 306 [2020-10-19 18:13:35,289 INFO L226 Difference]: Without dead ends: 306 [2020-10-19 18:13:35,290 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-19 18:13:35,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2020-10-19 18:13:35,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 183. [2020-10-19 18:13:35,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2020-10-19 18:13:35,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 226 transitions. [2020-10-19 18:13:35,296 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 226 transitions. Word has length 30 [2020-10-19 18:13:35,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:13:35,297 INFO L481 AbstractCegarLoop]: Abstraction has 183 states and 226 transitions. [2020-10-19 18:13:35,297 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-19 18:13:35,297 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 226 transitions. [2020-10-19 18:13:35,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-19 18:13:35,298 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:13:35,298 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:13:35,298 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-19 18:13:35,299 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr66ENSURES_VIOLATIONMEMORY_LEAK, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr65ASSERT_VIOLATIONMEMORY_FREE, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr59ASSERT_VIOLATIONMEMORY_FREE, mainErr61REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr60ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr64ASSERT_VIOLATIONMEMORY_FREE, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr62REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr56REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-10-19 18:13:35,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:13:35,299 INFO L82 PathProgramCache]: Analyzing trace with hash 132203639, now seen corresponding path program 1 times [2020-10-19 18:13:35,299 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:13:35,300 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566386740] [2020-10-19 18:13:35,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:13:35,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:13:35,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:13:35,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:13:35,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:13:35,343 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566386740] [2020-10-19 18:13:35,343 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:13:35,344 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 18:13:35,344 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814494053] [2020-10-19 18:13:35,344 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:13:35,345 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:13:35,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:13:35,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:13:35,345 INFO L87 Difference]: Start difference. First operand 183 states and 226 transitions. Second operand 4 states. [2020-10-19 18:13:35,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:13:35,540 INFO L93 Difference]: Finished difference Result 253 states and 314 transitions. [2020-10-19 18:13:35,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:13:35,540 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2020-10-19 18:13:35,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:13:35,542 INFO L225 Difference]: With dead ends: 253 [2020-10-19 18:13:35,542 INFO L226 Difference]: Without dead ends: 253 [2020-10-19 18:13:35,542 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 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 18:13:35,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2020-10-19 18:13:35,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 189. [2020-10-19 18:13:35,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2020-10-19 18:13:35,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 234 transitions. [2020-10-19 18:13:35,549 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 234 transitions. Word has length 33 [2020-10-19 18:13:35,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:13:35,550 INFO L481 AbstractCegarLoop]: Abstraction has 189 states and 234 transitions. [2020-10-19 18:13:35,550 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:13:35,550 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 234 transitions. [2020-10-19 18:13:35,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-19 18:13:35,551 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:13:35,551 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:13:35,551 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-19 18:13:35,552 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr66ENSURES_VIOLATIONMEMORY_LEAK, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr65ASSERT_VIOLATIONMEMORY_FREE, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr59ASSERT_VIOLATIONMEMORY_FREE, mainErr61REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr60ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr64ASSERT_VIOLATIONMEMORY_FREE, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr62REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr56REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-10-19 18:13:35,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:13:35,552 INFO L82 PathProgramCache]: Analyzing trace with hash -221027395, now seen corresponding path program 1 times [2020-10-19 18:13:35,553 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:13:35,553 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15940179] [2020-10-19 18:13:35,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:13:35,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:13:35,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:13:35,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:13:35,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:13:35,601 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15940179] [2020-10-19 18:13:35,601 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:13:35,602 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 18:13:35,602 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570319964] [2020-10-19 18:13:35,602 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:13:35,603 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:13:35,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:13:35,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:13:35,604 INFO L87 Difference]: Start difference. First operand 189 states and 234 transitions. Second operand 4 states. [2020-10-19 18:13:35,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:13:35,799 INFO L93 Difference]: Finished difference Result 188 states and 231 transitions. [2020-10-19 18:13:35,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:13:35,800 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2020-10-19 18:13:35,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:13:35,801 INFO L225 Difference]: With dead ends: 188 [2020-10-19 18:13:35,801 INFO L226 Difference]: Without dead ends: 188 [2020-10-19 18:13:35,802 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 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 18:13:35,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2020-10-19 18:13:35,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 188. [2020-10-19 18:13:35,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2020-10-19 18:13:35,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 231 transitions. [2020-10-19 18:13:35,807 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 231 transitions. Word has length 34 [2020-10-19 18:13:35,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:13:35,808 INFO L481 AbstractCegarLoop]: Abstraction has 188 states and 231 transitions. [2020-10-19 18:13:35,808 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:13:35,808 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 231 transitions. [2020-10-19 18:13:35,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-19 18:13:35,809 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:13:35,810 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:13:35,810 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-19 18:13:35,810 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr66ENSURES_VIOLATIONMEMORY_LEAK, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr65ASSERT_VIOLATIONMEMORY_FREE, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr59ASSERT_VIOLATIONMEMORY_FREE, mainErr61REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr60ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr64ASSERT_VIOLATIONMEMORY_FREE, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr62REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr56REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-10-19 18:13:35,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:13:35,811 INFO L82 PathProgramCache]: Analyzing trace with hash 131415361, now seen corresponding path program 1 times [2020-10-19 18:13:35,813 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:13:35,813 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575636382] [2020-10-19 18:13:35,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:13:35,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:13:35,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:13:35,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:13:35,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:13:35,973 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575636382] [2020-10-19 18:13:35,973 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:13:35,973 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-19 18:13:35,974 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232184934] [2020-10-19 18:13:35,974 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-19 18:13:35,974 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:13:35,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-19 18:13:35,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-19 18:13:35,975 INFO L87 Difference]: Start difference. First operand 188 states and 231 transitions. Second operand 10 states. [2020-10-19 18:13:36,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:13:36,715 INFO L93 Difference]: Finished difference Result 307 states and 361 transitions. [2020-10-19 18:13:36,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-19 18:13:36,715 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 33 [2020-10-19 18:13:36,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:13:36,718 INFO L225 Difference]: With dead ends: 307 [2020-10-19 18:13:36,718 INFO L226 Difference]: Without dead ends: 307 [2020-10-19 18:13:36,719 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2020-10-19 18:13:36,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2020-10-19 18:13:36,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 220. [2020-10-19 18:13:36,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2020-10-19 18:13:36,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 268 transitions. [2020-10-19 18:13:36,725 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 268 transitions. Word has length 33 [2020-10-19 18:13:36,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:13:36,725 INFO L481 AbstractCegarLoop]: Abstraction has 220 states and 268 transitions. [2020-10-19 18:13:36,725 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-19 18:13:36,726 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 268 transitions. [2020-10-19 18:13:36,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-19 18:13:36,726 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:13:36,727 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] [2020-10-19 18:13:36,727 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-19 18:13:36,727 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr66ENSURES_VIOLATIONMEMORY_LEAK, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr65ASSERT_VIOLATIONMEMORY_FREE, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr59ASSERT_VIOLATIONMEMORY_FREE, mainErr61REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr60ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr64ASSERT_VIOLATIONMEMORY_FREE, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr62REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr56REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-10-19 18:13:36,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:13:36,728 INFO L82 PathProgramCache]: Analyzing trace with hash -1797290604, now seen corresponding path program 1 times [2020-10-19 18:13:36,728 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:13:36,728 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768152102] [2020-10-19 18:13:36,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:13:36,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:13:36,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:13:36,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:13:36,861 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:13:36,862 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768152102] [2020-10-19 18:13:36,862 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [702560745] [2020-10-19 18:13:36,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:13:36,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:13:36,984 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 20 conjunts are in the unsatisfiable core [2020-10-19 18:13:36,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:13:37,091 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-10-19 18:13:37,092 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:13:37,100 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:13:37,104 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-10-19 18:13:37,104 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-19 18:13:37,110 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:13:37,111 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:13:37,111 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:29, output treesize:21 [2020-10-19 18:13:37,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-19 18:13:37,154 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2020-10-19 18:13:37,155 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:13:37,171 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:13:37,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-19 18:13:37,177 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2020-10-19 18:13:37,178 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-19 18:13:37,189 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:13:37,189 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:13:37,190 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:47, output treesize:39 [2020-10-19 18:13:37,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-19 18:13:37,393 INFO L173 IndexEqualityManager]: detected equality via solver [2020-10-19 18:13:37,395 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 10 [2020-10-19 18:13:37,399 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:13:37,437 INFO L625 ElimStorePlain]: treesize reduction 3, result has 92.3 percent of original size [2020-10-19 18:13:37,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-19 18:13:37,443 INFO L173 IndexEqualityManager]: detected equality via solver [2020-10-19 18:13:37,445 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:13:37,445 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 13 [2020-10-19 18:13:37,451 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-19 18:13:37,460 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:13:37,466 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:13:37,466 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:59, output treesize:7 [2020-10-19 18:13:37,488 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:13:37,489 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 18:13:37,489 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 11 [2020-10-19 18:13:37,489 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349837932] [2020-10-19 18:13:37,490 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-19 18:13:37,490 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:13:37,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-19 18:13:37,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-19 18:13:37,495 INFO L87 Difference]: Start difference. First operand 220 states and 268 transitions. Second operand 11 states. [2020-10-19 18:13:39,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:13:39,304 INFO L93 Difference]: Finished difference Result 361 states and 420 transitions. [2020-10-19 18:13:39,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-19 18:13:39,304 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 35 [2020-10-19 18:13:39,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:13:39,307 INFO L225 Difference]: With dead ends: 361 [2020-10-19 18:13:39,307 INFO L226 Difference]: Without dead ends: 361 [2020-10-19 18:13:39,308 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=87, Invalid=255, Unknown=0, NotChecked=0, Total=342 [2020-10-19 18:13:39,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2020-10-19 18:13:39,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 258. [2020-10-19 18:13:39,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2020-10-19 18:13:39,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 322 transitions. [2020-10-19 18:13:39,316 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 322 transitions. Word has length 35 [2020-10-19 18:13:39,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:13:39,316 INFO L481 AbstractCegarLoop]: Abstraction has 258 states and 322 transitions. [2020-10-19 18:13:39,316 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-19 18:13:39,316 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 322 transitions. [2020-10-19 18:13:39,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-19 18:13:39,317 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:13:39,317 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:13:39,532 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:13:39,533 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr66ENSURES_VIOLATIONMEMORY_LEAK, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr65ASSERT_VIOLATIONMEMORY_FREE, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr59ASSERT_VIOLATIONMEMORY_FREE, mainErr61REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr60ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr64ASSERT_VIOLATIONMEMORY_FREE, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr62REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr56REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-10-19 18:13:39,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:13:39,533 INFO L82 PathProgramCache]: Analyzing trace with hash 1209956345, now seen corresponding path program 1 times [2020-10-19 18:13:39,534 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:13:39,534 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230161065] [2020-10-19 18:13:39,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:13:39,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:13:39,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:13:39,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:13:39,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:13:39,599 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230161065] [2020-10-19 18:13:39,600 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:13:39,600 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-19 18:13:39,600 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339921947] [2020-10-19 18:13:39,601 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-19 18:13:39,601 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:13:39,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-19 18:13:39,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-19 18:13:39,602 INFO L87 Difference]: Start difference. First operand 258 states and 322 transitions. Second operand 6 states. [2020-10-19 18:13:40,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:13:40,250 INFO L93 Difference]: Finished difference Result 373 states and 468 transitions. [2020-10-19 18:13:40,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-19 18:13:40,250 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 35 [2020-10-19 18:13:40,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:13:40,252 INFO L225 Difference]: With dead ends: 373 [2020-10-19 18:13:40,252 INFO L226 Difference]: Without dead ends: 373 [2020-10-19 18:13:40,253 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-19 18:13:40,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2020-10-19 18:13:40,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 257. [2020-10-19 18:13:40,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 257 states. [2020-10-19 18:13:40,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 321 transitions. [2020-10-19 18:13:40,260 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 321 transitions. Word has length 35 [2020-10-19 18:13:40,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:13:40,260 INFO L481 AbstractCegarLoop]: Abstraction has 257 states and 321 transitions. [2020-10-19 18:13:40,261 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-19 18:13:40,261 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 321 transitions. [2020-10-19 18:13:40,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-19 18:13:40,261 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:13:40,262 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:13:40,262 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-19 18:13:40,262 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr66ENSURES_VIOLATIONMEMORY_LEAK, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr65ASSERT_VIOLATIONMEMORY_FREE, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr59ASSERT_VIOLATIONMEMORY_FREE, mainErr61REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr60ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr64ASSERT_VIOLATIONMEMORY_FREE, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr62REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr56REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-10-19 18:13:40,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:13:40,263 INFO L82 PathProgramCache]: Analyzing trace with hash 1209956346, now seen corresponding path program 1 times [2020-10-19 18:13:40,263 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:13:40,263 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088905330] [2020-10-19 18:13:40,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:13:40,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:13:40,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:13:40,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:13:40,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:13:40,366 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088905330] [2020-10-19 18:13:40,370 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:13:40,370 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-19 18:13:40,371 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960992631] [2020-10-19 18:13:40,371 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-19 18:13:40,372 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:13:40,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-19 18:13:40,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-19 18:13:40,373 INFO L87 Difference]: Start difference. First operand 257 states and 321 transitions. Second operand 6 states. [2020-10-19 18:13:41,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:13:41,040 INFO L93 Difference]: Finished difference Result 400 states and 506 transitions. [2020-10-19 18:13:41,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-19 18:13:41,043 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 35 [2020-10-19 18:13:41,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:13:41,045 INFO L225 Difference]: With dead ends: 400 [2020-10-19 18:13:41,045 INFO L226 Difference]: Without dead ends: 400 [2020-10-19 18:13:41,046 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-19 18:13:41,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2020-10-19 18:13:41,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 256. [2020-10-19 18:13:41,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 256 states. [2020-10-19 18:13:41,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 320 transitions. [2020-10-19 18:13:41,055 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 320 transitions. Word has length 35 [2020-10-19 18:13:41,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:13:41,056 INFO L481 AbstractCegarLoop]: Abstraction has 256 states and 320 transitions. [2020-10-19 18:13:41,056 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-19 18:13:41,056 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 320 transitions. [2020-10-19 18:13:41,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-19 18:13:41,057 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:13:41,057 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:13:41,057 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-19 18:13:41,058 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr66ENSURES_VIOLATIONMEMORY_LEAK, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr65ASSERT_VIOLATIONMEMORY_FREE, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr59ASSERT_VIOLATIONMEMORY_FREE, mainErr61REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr60ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr64ASSERT_VIOLATIONMEMORY_FREE, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr62REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr56REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-10-19 18:13:41,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:13:41,060 INFO L82 PathProgramCache]: Analyzing trace with hash 241182837, now seen corresponding path program 1 times [2020-10-19 18:13:41,060 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:13:41,060 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019088813] [2020-10-19 18:13:41,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:13:41,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:13:41,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:13:41,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:13:41,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:13:41,253 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019088813] [2020-10-19 18:13:41,254 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:13:41,254 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-19 18:13:41,254 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685081536] [2020-10-19 18:13:41,255 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-19 18:13:41,255 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:13:41,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-19 18:13:41,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-10-19 18:13:41,256 INFO L87 Difference]: Start difference. First operand 256 states and 320 transitions. Second operand 12 states. [2020-10-19 18:13:42,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:13:42,525 INFO L93 Difference]: Finished difference Result 502 states and 597 transitions. [2020-10-19 18:13:42,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-19 18:13:42,526 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 37 [2020-10-19 18:13:42,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:13:42,529 INFO L225 Difference]: With dead ends: 502 [2020-10-19 18:13:42,530 INFO L226 Difference]: Without dead ends: 502 [2020-10-19 18:13:42,530 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=119, Invalid=387, Unknown=0, NotChecked=0, Total=506 [2020-10-19 18:13:42,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502 states. [2020-10-19 18:13:42,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502 to 257. [2020-10-19 18:13:42,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 257 states. [2020-10-19 18:13:42,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 318 transitions. [2020-10-19 18:13:42,540 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 318 transitions. Word has length 37 [2020-10-19 18:13:42,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:13:42,540 INFO L481 AbstractCegarLoop]: Abstraction has 257 states and 318 transitions. [2020-10-19 18:13:42,540 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-19 18:13:42,540 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 318 transitions. [2020-10-19 18:13:42,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-19 18:13:42,541 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:13:42,541 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:13:42,542 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-19 18:13:42,542 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr66ENSURES_VIOLATIONMEMORY_LEAK, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr65ASSERT_VIOLATIONMEMORY_FREE, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr59ASSERT_VIOLATIONMEMORY_FREE, mainErr61REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr60ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr64ASSERT_VIOLATIONMEMORY_FREE, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr62REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr56REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-10-19 18:13:42,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:13:42,542 INFO L82 PathProgramCache]: Analyzing trace with hash 241182838, now seen corresponding path program 1 times [2020-10-19 18:13:42,543 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:13:42,543 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241173843] [2020-10-19 18:13:42,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:13:42,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:13:42,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:13:42,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:13:42,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:13:42,780 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241173843] [2020-10-19 18:13:42,780 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:13:42,780 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-19 18:13:42,781 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406078704] [2020-10-19 18:13:42,781 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-19 18:13:42,781 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:13:42,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-19 18:13:42,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2020-10-19 18:13:42,782 INFO L87 Difference]: Start difference. First operand 257 states and 318 transitions. Second operand 13 states. [2020-10-19 18:13:44,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:13:44,447 INFO L93 Difference]: Finished difference Result 566 states and 663 transitions. [2020-10-19 18:13:44,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-19 18:13:44,447 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 37 [2020-10-19 18:13:44,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:13:44,451 INFO L225 Difference]: With dead ends: 566 [2020-10-19 18:13:44,451 INFO L226 Difference]: Without dead ends: 566 [2020-10-19 18:13:44,452 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=141, Invalid=411, Unknown=0, NotChecked=0, Total=552 [2020-10-19 18:13:44,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2020-10-19 18:13:44,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 263. [2020-10-19 18:13:44,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 263 states. [2020-10-19 18:13:44,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 325 transitions. [2020-10-19 18:13:44,459 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 325 transitions. Word has length 37 [2020-10-19 18:13:44,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:13:44,460 INFO L481 AbstractCegarLoop]: Abstraction has 263 states and 325 transitions. [2020-10-19 18:13:44,460 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-19 18:13:44,460 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 325 transitions. [2020-10-19 18:13:44,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-19 18:13:44,461 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:13:44,461 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:13:44,461 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-19 18:13:44,461 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr66ENSURES_VIOLATIONMEMORY_LEAK, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr65ASSERT_VIOLATIONMEMORY_FREE, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr59ASSERT_VIOLATIONMEMORY_FREE, mainErr61REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr60ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr64ASSERT_VIOLATIONMEMORY_FREE, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr62REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr56REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-10-19 18:13:44,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:13:44,462 INFO L82 PathProgramCache]: Analyzing trace with hash -1850907343, now seen corresponding path program 1 times [2020-10-19 18:13:44,462 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:13:44,462 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138104913] [2020-10-19 18:13:44,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:13:44,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:13:44,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:13:44,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:13:44,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:13:44,572 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138104913] [2020-10-19 18:13:44,572 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:13:44,572 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-19 18:13:44,573 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205468909] [2020-10-19 18:13:44,573 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-19 18:13:44,573 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:13:44,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-19 18:13:44,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-19 18:13:44,574 INFO L87 Difference]: Start difference. First operand 263 states and 325 transitions. Second operand 9 states. [2020-10-19 18:13:45,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:13:45,240 INFO L93 Difference]: Finished difference Result 277 states and 342 transitions. [2020-10-19 18:13:45,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-19 18:13:45,241 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 38 [2020-10-19 18:13:45,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:13:45,243 INFO L225 Difference]: With dead ends: 277 [2020-10-19 18:13:45,243 INFO L226 Difference]: Without dead ends: 277 [2020-10-19 18:13:45,244 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2020-10-19 18:13:45,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2020-10-19 18:13:45,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 262. [2020-10-19 18:13:45,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2020-10-19 18:13:45,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 324 transitions. [2020-10-19 18:13:45,250 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 324 transitions. Word has length 38 [2020-10-19 18:13:45,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:13:45,251 INFO L481 AbstractCegarLoop]: Abstraction has 262 states and 324 transitions. [2020-10-19 18:13:45,251 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-19 18:13:45,251 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 324 transitions. [2020-10-19 18:13:45,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-19 18:13:45,252 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:13:45,252 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:13:45,252 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-19 18:13:45,252 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr66ENSURES_VIOLATIONMEMORY_LEAK, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr65ASSERT_VIOLATIONMEMORY_FREE, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr59ASSERT_VIOLATIONMEMORY_FREE, mainErr61REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr60ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr64ASSERT_VIOLATIONMEMORY_FREE, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr62REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr56REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-10-19 18:13:45,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:13:45,253 INFO L82 PathProgramCache]: Analyzing trace with hash -1850907342, now seen corresponding path program 1 times [2020-10-19 18:13:45,253 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:13:45,253 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808648705] [2020-10-19 18:13:45,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:13:45,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:13:45,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:13:45,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:13:45,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:13:45,387 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808648705] [2020-10-19 18:13:45,387 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:13:45,387 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-19 18:13:45,387 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890664924] [2020-10-19 18:13:45,388 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-19 18:13:45,388 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:13:45,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-19 18:13:45,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-19 18:13:45,389 INFO L87 Difference]: Start difference. First operand 262 states and 324 transitions. Second operand 9 states. [2020-10-19 18:13:46,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:13:46,077 INFO L93 Difference]: Finished difference Result 276 states and 341 transitions. [2020-10-19 18:13:46,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-19 18:13:46,078 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 38 [2020-10-19 18:13:46,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:13:46,080 INFO L225 Difference]: With dead ends: 276 [2020-10-19 18:13:46,080 INFO L226 Difference]: Without dead ends: 276 [2020-10-19 18:13:46,081 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2020-10-19 18:13:46,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2020-10-19 18:13:46,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 261. [2020-10-19 18:13:46,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-19 18:13:46,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 323 transitions. [2020-10-19 18:13:46,087 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 323 transitions. Word has length 38 [2020-10-19 18:13:46,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:13:46,087 INFO L481 AbstractCegarLoop]: Abstraction has 261 states and 323 transitions. [2020-10-19 18:13:46,088 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-19 18:13:46,088 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 323 transitions. [2020-10-19 18:13:46,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-19 18:13:46,089 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:13:46,089 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:13:46,089 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-19 18:13:46,089 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr66ENSURES_VIOLATIONMEMORY_LEAK, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr65ASSERT_VIOLATIONMEMORY_FREE, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr59ASSERT_VIOLATIONMEMORY_FREE, mainErr61REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr60ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr64ASSERT_VIOLATIONMEMORY_FREE, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr62REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr56REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-10-19 18:13:46,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:13:46,090 INFO L82 PathProgramCache]: Analyzing trace with hash -1871132276, now seen corresponding path program 1 times [2020-10-19 18:13:46,090 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:13:46,090 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028964653] [2020-10-19 18:13:46,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:13:46,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:13:46,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:13:46,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:13:46,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:13:46,137 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028964653] [2020-10-19 18:13:46,137 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:13:46,137 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 18:13:46,137 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776412374] [2020-10-19 18:13:46,138 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:13:46,138 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:13:46,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:13:46,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:13:46,139 INFO L87 Difference]: Start difference. First operand 261 states and 323 transitions. Second operand 4 states. [2020-10-19 18:13:46,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:13:46,335 INFO L93 Difference]: Finished difference Result 263 states and 325 transitions. [2020-10-19 18:13:46,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:13:46,336 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 40 [2020-10-19 18:13:46,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:13:46,338 INFO L225 Difference]: With dead ends: 263 [2020-10-19 18:13:46,338 INFO L226 Difference]: Without dead ends: 263 [2020-10-19 18:13:46,339 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 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 18:13:46,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2020-10-19 18:13:46,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 263. [2020-10-19 18:13:46,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 263 states. [2020-10-19 18:13:46,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 325 transitions. [2020-10-19 18:13:46,349 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 325 transitions. Word has length 40 [2020-10-19 18:13:46,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:13:46,349 INFO L481 AbstractCegarLoop]: Abstraction has 263 states and 325 transitions. [2020-10-19 18:13:46,350 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:13:46,350 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 325 transitions. [2020-10-19 18:13:46,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-19 18:13:46,351 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:13:46,351 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:13:46,351 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-19 18:13:46,351 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr66ENSURES_VIOLATIONMEMORY_LEAK, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr65ASSERT_VIOLATIONMEMORY_FREE, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr59ASSERT_VIOLATIONMEMORY_FREE, mainErr61REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr60ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr64ASSERT_VIOLATIONMEMORY_FREE, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr62REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr56REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-10-19 18:13:46,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:13:46,352 INFO L82 PathProgramCache]: Analyzing trace with hash 418645810, now seen corresponding path program 1 times [2020-10-19 18:13:46,352 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:13:46,352 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582187219] [2020-10-19 18:13:46,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:13:46,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:13:46,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:13:46,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:13:46,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:13:46,688 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582187219] [2020-10-19 18:13:46,689 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:13:46,689 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-19 18:13:46,689 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714630845] [2020-10-19 18:13:46,689 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-19 18:13:46,690 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:13:46,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-19 18:13:46,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2020-10-19 18:13:46,690 INFO L87 Difference]: Start difference. First operand 263 states and 325 transitions. Second operand 14 states. [2020-10-19 18:13:48,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:13:48,420 INFO L93 Difference]: Finished difference Result 565 states and 661 transitions. [2020-10-19 18:13:48,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-19 18:13:48,421 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 41 [2020-10-19 18:13:48,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:13:48,424 INFO L225 Difference]: With dead ends: 565 [2020-10-19 18:13:48,424 INFO L226 Difference]: Without dead ends: 565 [2020-10-19 18:13:48,425 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=181, Invalid=575, Unknown=0, NotChecked=0, Total=756 [2020-10-19 18:13:48,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2020-10-19 18:13:48,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 263. [2020-10-19 18:13:48,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 263 states. [2020-10-19 18:13:48,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 324 transitions. [2020-10-19 18:13:48,432 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 324 transitions. Word has length 41 [2020-10-19 18:13:48,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:13:48,432 INFO L481 AbstractCegarLoop]: Abstraction has 263 states and 324 transitions. [2020-10-19 18:13:48,432 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-19 18:13:48,432 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 324 transitions. [2020-10-19 18:13:48,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-19 18:13:48,433 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:13:48,433 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:13:48,434 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-19 18:13:48,434 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr66ENSURES_VIOLATIONMEMORY_LEAK, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr65ASSERT_VIOLATIONMEMORY_FREE, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr59ASSERT_VIOLATIONMEMORY_FREE, mainErr61REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr60ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr64ASSERT_VIOLATIONMEMORY_FREE, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr62REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr56REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-10-19 18:13:48,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:13:48,434 INFO L82 PathProgramCache]: Analyzing trace with hash -1318150528, now seen corresponding path program 1 times [2020-10-19 18:13:48,435 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:13:48,435 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160700579] [2020-10-19 18:13:48,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:13:48,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:13:48,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:13:48,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:13:48,555 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-19 18:13:48,555 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160700579] [2020-10-19 18:13:48,556 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:13:48,556 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-19 18:13:48,556 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060681683] [2020-10-19 18:13:48,557 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-19 18:13:48,557 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:13:48,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-19 18:13:48,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-19 18:13:48,558 INFO L87 Difference]: Start difference. First operand 263 states and 324 transitions. Second operand 8 states. [2020-10-19 18:13:49,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:13:49,032 INFO L93 Difference]: Finished difference Result 278 states and 339 transitions. [2020-10-19 18:13:49,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-19 18:13:49,033 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 42 [2020-10-19 18:13:49,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:13:49,035 INFO L225 Difference]: With dead ends: 278 [2020-10-19 18:13:49,035 INFO L226 Difference]: Without dead ends: 278 [2020-10-19 18:13:49,036 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2020-10-19 18:13:49,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2020-10-19 18:13:49,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 272. [2020-10-19 18:13:49,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 272 states. [2020-10-19 18:13:49,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 333 transitions. [2020-10-19 18:13:49,041 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 333 transitions. Word has length 42 [2020-10-19 18:13:49,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:13:49,041 INFO L481 AbstractCegarLoop]: Abstraction has 272 states and 333 transitions. [2020-10-19 18:13:49,041 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-19 18:13:49,041 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 333 transitions. [2020-10-19 18:13:49,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-19 18:13:49,042 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:13:49,043 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:13:49,043 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-19 18:13:49,043 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr66ENSURES_VIOLATIONMEMORY_LEAK, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr65ASSERT_VIOLATIONMEMORY_FREE, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr59ASSERT_VIOLATIONMEMORY_FREE, mainErr61REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr60ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr64ASSERT_VIOLATIONMEMORY_FREE, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr62REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr56REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-10-19 18:13:49,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:13:49,044 INFO L82 PathProgramCache]: Analyzing trace with hash -1533266383, now seen corresponding path program 1 times [2020-10-19 18:13:49,044 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:13:49,044 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009127528] [2020-10-19 18:13:49,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:13:49,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:13:49,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:13:49,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:13:49,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:13:49,138 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009127528] [2020-10-19 18:13:49,139 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:13:49,139 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-19 18:13:49,139 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204835025] [2020-10-19 18:13:49,140 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-19 18:13:49,140 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:13:49,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-19 18:13:49,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-19 18:13:49,144 INFO L87 Difference]: Start difference. First operand 272 states and 333 transitions. Second operand 8 states. [2020-10-19 18:13:49,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:13:49,617 INFO L93 Difference]: Finished difference Result 282 states and 343 transitions. [2020-10-19 18:13:49,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-19 18:13:49,618 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 42 [2020-10-19 18:13:49,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:13:49,621 INFO L225 Difference]: With dead ends: 282 [2020-10-19 18:13:49,621 INFO L226 Difference]: Without dead ends: 282 [2020-10-19 18:13:49,621 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2020-10-19 18:13:49,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2020-10-19 18:13:49,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 269. [2020-10-19 18:13:49,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 269 states. [2020-10-19 18:13:49,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 328 transitions. [2020-10-19 18:13:49,630 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 328 transitions. Word has length 42 [2020-10-19 18:13:49,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:13:49,631 INFO L481 AbstractCegarLoop]: Abstraction has 269 states and 328 transitions. [2020-10-19 18:13:49,631 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-19 18:13:49,632 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 328 transitions. [2020-10-19 18:13:49,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-19 18:13:49,633 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:13:49,633 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:13:49,634 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-19 18:13:49,634 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr66ENSURES_VIOLATIONMEMORY_LEAK, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr65ASSERT_VIOLATIONMEMORY_FREE, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr59ASSERT_VIOLATIONMEMORY_FREE, mainErr61REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr60ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr64ASSERT_VIOLATIONMEMORY_FREE, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr62REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr56REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-10-19 18:13:49,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:13:49,635 INFO L82 PathProgramCache]: Analyzing trace with hash -1255371776, now seen corresponding path program 1 times [2020-10-19 18:13:49,635 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:13:49,639 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663438631] [2020-10-19 18:13:49,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:13:49,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:13:49,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:13:49,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:13:49,722 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-19 18:13:49,723 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663438631] [2020-10-19 18:13:49,723 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:13:49,723 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 18:13:49,724 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021486609] [2020-10-19 18:13:49,724 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:13:49,725 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:13:49,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:13:49,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:13:49,726 INFO L87 Difference]: Start difference. First operand 269 states and 328 transitions. Second operand 4 states. [2020-10-19 18:13:50,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:13:50,052 INFO L93 Difference]: Finished difference Result 279 states and 332 transitions. [2020-10-19 18:13:50,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:13:50,053 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 42 [2020-10-19 18:13:50,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:13:50,055 INFO L225 Difference]: With dead ends: 279 [2020-10-19 18:13:50,056 INFO L226 Difference]: Without dead ends: 279 [2020-10-19 18:13:50,056 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 18:13:50,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2020-10-19 18:13:50,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 270. [2020-10-19 18:13:50,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 270 states. [2020-10-19 18:13:50,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 329 transitions. [2020-10-19 18:13:50,064 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 329 transitions. Word has length 42 [2020-10-19 18:13:50,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:13:50,065 INFO L481 AbstractCegarLoop]: Abstraction has 270 states and 329 transitions. [2020-10-19 18:13:50,065 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:13:50,066 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 329 transitions. [2020-10-19 18:13:50,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-19 18:13:50,067 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:13:50,067 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:13:50,068 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-19 18:13:50,070 INFO L429 AbstractCegarLoop]: === Iteration 32 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr66ENSURES_VIOLATIONMEMORY_LEAK, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr65ASSERT_VIOLATIONMEMORY_FREE, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr59ASSERT_VIOLATIONMEMORY_FREE, mainErr61REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr60ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr64ASSERT_VIOLATIONMEMORY_FREE, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr62REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr56REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-10-19 18:13:50,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:13:50,071 INFO L82 PathProgramCache]: Analyzing trace with hash -2063486311, now seen corresponding path program 1 times [2020-10-19 18:13:50,071 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:13:50,072 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274647643] [2020-10-19 18:13:50,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:13:50,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:13:50,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:13:50,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:13:50,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:13:50,535 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274647643] [2020-10-19 18:13:50,536 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:13:50,536 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-19 18:13:50,536 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270327201] [2020-10-19 18:13:50,536 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-19 18:13:50,537 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:13:50,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-19 18:13:50,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2020-10-19 18:13:50,538 INFO L87 Difference]: Start difference. First operand 270 states and 329 transitions. Second operand 15 states. [2020-10-19 18:13:52,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:13:52,463 INFO L93 Difference]: Finished difference Result 567 states and 658 transitions. [2020-10-19 18:13:52,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-19 18:13:52,463 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 44 [2020-10-19 18:13:52,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:13:52,466 INFO L225 Difference]: With dead ends: 567 [2020-10-19 18:13:52,466 INFO L226 Difference]: Without dead ends: 567 [2020-10-19 18:13:52,467 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=199, Invalid=613, Unknown=0, NotChecked=0, Total=812 [2020-10-19 18:13:52,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2020-10-19 18:13:52,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 270. [2020-10-19 18:13:52,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 270 states. [2020-10-19 18:13:52,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 328 transitions. [2020-10-19 18:13:52,473 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 328 transitions. Word has length 44 [2020-10-19 18:13:52,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:13:52,474 INFO L481 AbstractCegarLoop]: Abstraction has 270 states and 328 transitions. [2020-10-19 18:13:52,474 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-19 18:13:52,474 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 328 transitions. [2020-10-19 18:13:52,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-19 18:13:52,475 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:13:52,475 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, 1, 1, 1, 1] [2020-10-19 18:13:52,475 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-19 18:13:52,476 INFO L429 AbstractCegarLoop]: === Iteration 33 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr66ENSURES_VIOLATIONMEMORY_LEAK, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr65ASSERT_VIOLATIONMEMORY_FREE, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr59ASSERT_VIOLATIONMEMORY_FREE, mainErr61REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr60ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr64ASSERT_VIOLATIONMEMORY_FREE, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr62REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr56REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-10-19 18:13:52,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:13:52,476 INFO L82 PathProgramCache]: Analyzing trace with hash 1795101756, now seen corresponding path program 1 times [2020-10-19 18:13:52,477 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:13:52,477 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862369054] [2020-10-19 18:13:52,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:13:52,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:13:52,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:13:52,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:13:52,602 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:13:52,603 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862369054] [2020-10-19 18:13:52,603 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1929578395] [2020-10-19 18:13:52,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:13:52,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:13:52,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 17 conjunts are in the unsatisfiable core [2020-10-19 18:13:52,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:13:52,730 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-10-19 18:13:52,730 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:13:52,738 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:13:52,741 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-10-19 18:13:52,741 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-19 18:13:52,745 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:13:52,746 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:13:52,746 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:23, output treesize:15 [2020-10-19 18:13:52,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-19 18:13:52,756 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2020-10-19 18:13:52,757 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:13:52,767 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:13:52,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-19 18:13:52,772 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2020-10-19 18:13:52,773 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-19 18:13:52,781 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:13:52,781 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:13:52,781 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:41, output treesize:33 [2020-10-19 18:13:52,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-19 18:13:52,817 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 10 [2020-10-19 18:13:52,819 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:13:52,830 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:13:52,836 INFO L350 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2020-10-19 18:13:52,837 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 10 [2020-10-19 18:13:52,839 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-19 18:13:52,842 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:13:52,843 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:13:52,843 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:47, output treesize:7 [2020-10-19 18:13:52,856 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-19 18:13:52,856 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 18:13:52,856 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7] total 11 [2020-10-19 18:13:52,857 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728077952] [2020-10-19 18:13:52,857 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-19 18:13:52,857 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:13:52,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-19 18:13:52,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-10-19 18:13:52,858 INFO L87 Difference]: Start difference. First operand 270 states and 328 transitions. Second operand 11 states. [2020-10-19 18:13:53,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:13:53,898 INFO L93 Difference]: Finished difference Result 389 states and 448 transitions. [2020-10-19 18:13:53,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-19 18:13:53,898 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 45 [2020-10-19 18:13:53,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:13:53,901 INFO L225 Difference]: With dead ends: 389 [2020-10-19 18:13:53,901 INFO L226 Difference]: Without dead ends: 389 [2020-10-19 18:13:53,901 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=85, Invalid=335, Unknown=0, NotChecked=0, Total=420 [2020-10-19 18:13:53,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2020-10-19 18:13:53,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 294. [2020-10-19 18:13:53,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2020-10-19 18:13:53,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 363 transitions. [2020-10-19 18:13:53,908 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 363 transitions. Word has length 45 [2020-10-19 18:13:53,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:13:53,908 INFO L481 AbstractCegarLoop]: Abstraction has 294 states and 363 transitions. [2020-10-19 18:13:53,908 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-19 18:13:53,909 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 363 transitions. [2020-10-19 18:13:53,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-19 18:13:53,909 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:13:53,910 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:13:54,123 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:13:54,124 INFO L429 AbstractCegarLoop]: === Iteration 34 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr66ENSURES_VIOLATIONMEMORY_LEAK, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr65ASSERT_VIOLATIONMEMORY_FREE, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr59ASSERT_VIOLATIONMEMORY_FREE, mainErr61REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr60ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr64ASSERT_VIOLATIONMEMORY_FREE, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr62REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr56REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-10-19 18:13:54,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:13:54,124 INFO L82 PathProgramCache]: Analyzing trace with hash 1877413324, now seen corresponding path program 1 times [2020-10-19 18:13:54,125 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:13:54,125 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498224405] [2020-10-19 18:13:54,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:13:54,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:13:54,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:13:54,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:13:54,186 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-19 18:13:54,186 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498224405] [2020-10-19 18:13:54,187 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:13:54,187 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 18:13:54,187 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746578884] [2020-10-19 18:13:54,187 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:13:54,188 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:13:54,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:13:54,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:13:54,188 INFO L87 Difference]: Start difference. First operand 294 states and 363 transitions. Second operand 4 states. [2020-10-19 18:13:54,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:13:54,472 INFO L93 Difference]: Finished difference Result 296 states and 362 transitions. [2020-10-19 18:13:54,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:13:54,473 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 46 [2020-10-19 18:13:54,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:13:54,474 INFO L225 Difference]: With dead ends: 296 [2020-10-19 18:13:54,475 INFO L226 Difference]: Without dead ends: 296 [2020-10-19 18:13:54,475 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 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 18:13:54,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2020-10-19 18:13:54,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 293. [2020-10-19 18:13:54,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 293 states. [2020-10-19 18:13:54,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 359 transitions. [2020-10-19 18:13:54,481 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 359 transitions. Word has length 46 [2020-10-19 18:13:54,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:13:54,482 INFO L481 AbstractCegarLoop]: Abstraction has 293 states and 359 transitions. [2020-10-19 18:13:54,482 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:13:54,482 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 359 transitions. [2020-10-19 18:13:54,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-19 18:13:54,483 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:13:54,483 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:13:54,483 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-19 18:13:54,483 INFO L429 AbstractCegarLoop]: === Iteration 35 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr66ENSURES_VIOLATIONMEMORY_LEAK, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr65ASSERT_VIOLATIONMEMORY_FREE, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr59ASSERT_VIOLATIONMEMORY_FREE, mainErr61REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr60ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr64ASSERT_VIOLATIONMEMORY_FREE, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr62REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr56REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-10-19 18:13:54,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:13:54,484 INFO L82 PathProgramCache]: Analyzing trace with hash 1168941722, now seen corresponding path program 1 times [2020-10-19 18:13:54,484 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:13:54,484 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175507753] [2020-10-19 18:13:54,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:13:54,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:13:54,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:13:54,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:13:54,629 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-19 18:13:54,630 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175507753] [2020-10-19 18:13:54,630 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:13:54,630 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-19 18:13:54,630 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599435462] [2020-10-19 18:13:54,632 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-19 18:13:54,633 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:13:54,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-19 18:13:54,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-10-19 18:13:54,633 INFO L87 Difference]: Start difference. First operand 293 states and 359 transitions. Second operand 11 states. [2020-10-19 18:13:55,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:13:55,628 INFO L93 Difference]: Finished difference Result 520 states and 622 transitions. [2020-10-19 18:13:55,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-19 18:13:55,629 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 45 [2020-10-19 18:13:55,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:13:55,632 INFO L225 Difference]: With dead ends: 520 [2020-10-19 18:13:55,632 INFO L226 Difference]: Without dead ends: 520 [2020-10-19 18:13:55,632 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2020-10-19 18:13:55,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 520 states. [2020-10-19 18:13:55,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 520 to 300. [2020-10-19 18:13:55,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 300 states. [2020-10-19 18:13:55,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 368 transitions. [2020-10-19 18:13:55,639 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 368 transitions. Word has length 45 [2020-10-19 18:13:55,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:13:55,639 INFO L481 AbstractCegarLoop]: Abstraction has 300 states and 368 transitions. [2020-10-19 18:13:55,640 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-19 18:13:55,640 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 368 transitions. [2020-10-19 18:13:55,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-19 18:13:55,641 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:13:55,641 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:13:55,641 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-19 18:13:55,641 INFO L429 AbstractCegarLoop]: === Iteration 36 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr66ENSURES_VIOLATIONMEMORY_LEAK, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr65ASSERT_VIOLATIONMEMORY_FREE, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr59ASSERT_VIOLATIONMEMORY_FREE, mainErr61REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr60ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr64ASSERT_VIOLATIONMEMORY_FREE, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr62REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr56REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-10-19 18:13:55,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:13:55,642 INFO L82 PathProgramCache]: Analyzing trace with hash 1168941723, now seen corresponding path program 1 times [2020-10-19 18:13:55,642 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:13:55,642 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701373517] [2020-10-19 18:13:55,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:13:55,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:13:55,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:13:55,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:13:55,847 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-19 18:13:55,848 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701373517] [2020-10-19 18:13:55,848 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:13:55,849 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-19 18:13:55,852 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349830263] [2020-10-19 18:13:55,853 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-19 18:13:55,853 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:13:55,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-19 18:13:55,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-10-19 18:13:55,854 INFO L87 Difference]: Start difference. First operand 300 states and 368 transitions. Second operand 11 states. [2020-10-19 18:13:56,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:13:56,997 INFO L93 Difference]: Finished difference Result 523 states and 626 transitions. [2020-10-19 18:13:56,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-19 18:13:56,998 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 45 [2020-10-19 18:13:56,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:13:57,001 INFO L225 Difference]: With dead ends: 523 [2020-10-19 18:13:57,001 INFO L226 Difference]: Without dead ends: 523 [2020-10-19 18:13:57,002 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2020-10-19 18:13:57,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 523 states. [2020-10-19 18:13:57,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 523 to 306. [2020-10-19 18:13:57,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 306 states. [2020-10-19 18:13:57,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 375 transitions. [2020-10-19 18:13:57,009 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 375 transitions. Word has length 45 [2020-10-19 18:13:57,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:13:57,009 INFO L481 AbstractCegarLoop]: Abstraction has 306 states and 375 transitions. [2020-10-19 18:13:57,009 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-19 18:13:57,009 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 375 transitions. [2020-10-19 18:13:57,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-19 18:13:57,010 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:13:57,011 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:13:57,011 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-19 18:13:57,011 INFO L429 AbstractCegarLoop]: === Iteration 37 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr66ENSURES_VIOLATIONMEMORY_LEAK, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr65ASSERT_VIOLATIONMEMORY_FREE, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr59ASSERT_VIOLATIONMEMORY_FREE, mainErr61REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr60ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr64ASSERT_VIOLATIONMEMORY_FREE, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr62REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr56REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-10-19 18:13:57,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:13:57,012 INFO L82 PathProgramCache]: Analyzing trace with hash -186419219, now seen corresponding path program 1 times [2020-10-19 18:13:57,012 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:13:57,012 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100151042] [2020-10-19 18:13:57,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:13:57,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:13:57,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:13:57,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:13:57,077 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-19 18:13:57,077 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100151042] [2020-10-19 18:13:57,077 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1758059208] [2020-10-19 18:13:57,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:13:57,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:13:57,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-19 18:13:57,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:13:57,257 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-19 18:13:57,258 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 18:13:57,258 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 7 [2020-10-19 18:13:57,258 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351643634] [2020-10-19 18:13:57,259 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-19 18:13:57,259 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:13:57,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-19 18:13:57,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-10-19 18:13:57,260 INFO L87 Difference]: Start difference. First operand 306 states and 375 transitions. Second operand 8 states. [2020-10-19 18:13:57,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:13:57,478 INFO L93 Difference]: Finished difference Result 337 states and 406 transitions. [2020-10-19 18:13:57,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-19 18:13:57,479 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 46 [2020-10-19 18:13:57,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:13:57,481 INFO L225 Difference]: With dead ends: 337 [2020-10-19 18:13:57,481 INFO L226 Difference]: Without dead ends: 313 [2020-10-19 18:13:57,481 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-10-19 18:13:57,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2020-10-19 18:13:57,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 313. [2020-10-19 18:13:57,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 313 states. [2020-10-19 18:13:57,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 382 transitions. [2020-10-19 18:13:57,490 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 382 transitions. Word has length 46 [2020-10-19 18:13:57,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:13:57,490 INFO L481 AbstractCegarLoop]: Abstraction has 313 states and 382 transitions. [2020-10-19 18:13:57,490 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-19 18:13:57,491 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 382 transitions. [2020-10-19 18:13:57,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-19 18:13:57,491 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:13:57,492 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:13:57,703 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2020-10-19 18:13:57,704 INFO L429 AbstractCegarLoop]: === Iteration 38 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr51REQUIRES_VIOLATION, mainErr66ENSURES_VIOLATIONMEMORY_LEAK, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr65ASSERT_VIOLATIONMEMORY_FREE, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr59ASSERT_VIOLATIONMEMORY_FREE, mainErr61REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr60ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr64ASSERT_VIOLATIONMEMORY_FREE, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr58ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr62REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr56REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2020-10-19 18:13:57,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:13:57,705 INFO L82 PathProgramCache]: Analyzing trace with hash 1237981495, now seen corresponding path program 1 times [2020-10-19 18:13:57,705 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:13:57,705 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799949181] [2020-10-19 18:13:57,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:13:57,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:13:57,721 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:13:57,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:13:57,736 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:13:57,777 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:13:57,777 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-19 18:13:57,778 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-19 18:13:57,872 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.10 06:13:57 BoogieIcfgContainer [2020-10-19 18:13:57,872 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-19 18:13:57,872 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-19 18:13:57,873 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-19 18:13:57,873 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-19 18:13:57,874 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:13:23" (3/4) ... [2020-10-19 18:13:57,876 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-19 18:13:57,949 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-19 18:13:57,950 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-19 18:13:57,951 INFO L168 Benchmark]: Toolchain (without parser) took 35930.02 ms. Allocated memory was 1.0 GB in the beginning and 1.5 GB in the end (delta: 519.0 MB). Free memory was 950.6 MB in the beginning and 963.1 MB in the end (delta: -12.5 MB). Peak memory consumption was 506.5 MB. Max. memory is 11.5 GB. [2020-10-19 18:13:57,952 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:13:57,952 INFO L168 Benchmark]: CACSL2BoogieTranslator took 652.72 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.5 MB). Free memory was 950.6 MB in the beginning and 1.1 GB in the end (delta: -159.2 MB). Peak memory consumption was 20.9 MB. Max. memory is 11.5 GB. [2020-10-19 18:13:57,953 INFO L168 Benchmark]: Boogie Preprocessor took 100.32 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:13:57,953 INFO L168 Benchmark]: RCFGBuilder took 922.54 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: 77.5 MB). Peak memory consumption was 77.5 MB. Max. memory is 11.5 GB. [2020-10-19 18:13:57,954 INFO L168 Benchmark]: TraceAbstraction took 34166.63 ms. Allocated memory was 1.2 GB in the beginning and 1.5 GB in the end (delta: 378.5 MB). Free memory was 1.0 GB in the beginning and 963.1 MB in the end (delta: 69.2 MB). Peak memory consumption was 447.7 MB. Max. memory is 11.5 GB. [2020-10-19 18:13:57,954 INFO L168 Benchmark]: Witness Printer took 77.25 ms. Allocated memory is still 1.5 GB. Free memory is still 963.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:13:57,956 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 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 652.72 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.5 MB). Free memory was 950.6 MB in the beginning and 1.1 GB in the end (delta: -159.2 MB). Peak memory consumption was 20.9 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 100.32 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 922.54 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: 77.5 MB). Peak memory consumption was 77.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 34166.63 ms. Allocated memory was 1.2 GB in the beginning and 1.5 GB in the end (delta: 378.5 MB). Free memory was 1.0 GB in the beginning and 963.1 MB in the end (delta: 69.2 MB). Peak memory consumption was 447.7 MB. Max. memory is 11.5 GB. * Witness Printer took 77.25 ms. Allocated memory is still 1.5 GB. Free memory is still 963.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1040]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L1002] SLL* list = malloc(sizeof(SLL)); VAL [list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1003] list->next = ((void*)0) VAL [list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1004] COND FALSE !(!(list != ((void*)0))) VAL [list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1004] COND FALSE !(__VERIFIER_nondet_int()) [L1004] list->inner = malloc(sizeof(SLL)) VAL [list={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}] [L1004] EXPR list->inner VAL [list={-1:0}, list->inner={-2:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L1004] list->inner->next = ((void*)0) VAL [list={-1:0}, list->inner={-2:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}] [L1004] EXPR list->inner VAL [list={-1:0}, list->inner={-2:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}] [L1004] list->inner->inner = ((void*)0) VAL [list={-1:0}, list->inner={-2:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L1004] EXPR list->inner VAL [list={-1:0}, list->inner={-2:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}] [L1004] EXPR list->inner != ((void*)0) || list->inner == ((void*)0) VAL [list={-1:0}, list->inner={-2:0}, list->inner != ((void*)0) || list->inner == ((void*)0)=1, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}] [L1004] COND FALSE !(!(list->inner != ((void*)0) || list->inner == ((void*)0))) [L1006] SLL* end = list; VAL [end={-1:0}, list={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}] [L1009] COND FALSE !(__VERIFIER_nondet_int()) [L1019] end = ((void*)0) [L1020] end = list VAL [end={-1:0}, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L1023] COND FALSE !(!(((void*)0) != end)) VAL [end={-1:0}, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L1025] COND TRUE ((void*)0) != end [L1027] int len = 0; VAL [end={-1:0}, len=0, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L1028] EXPR end->inner VAL [end={-1:0}, end->inner={-2:0}, len=0, list={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}] [L1028] SLL* inner = end->inner; [L1029] COND TRUE ((void*)0) != inner VAL [end={-1:0}, inner={-2:0}, len=0, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L1031] COND TRUE len == 0 [L1032] len = 1 VAL [end={-1:0}, inner={-2:0}, len=1, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L1035] COND FALSE !(!(((void*)0) != inner)) VAL [end={-1:0}, inner={-2:0}, len=1, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L1036] EXPR inner->inner VAL [end={-1:0}, inner={-2:0}, inner->inner={0:0}, len=1, list={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}] [L1036] COND FALSE !(!(((void*)0) == inner->inner)) [L1037] EXPR inner->next VAL [end={-1:0}, inner={-2:0}, inner->next={0:0}, len=1, list={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}] [L1037] COND FALSE !(!(((void*)0) == inner->next)) [L1038] EXPR inner->inner VAL [end={-1:0}, inner={-2:0}, inner->inner={0:0}, len=1, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L1038] inner = inner->inner [L1039] COND TRUE len == 1 VAL [end={-1:0}, inner={0:0}, len=1, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L1040] inner->inner - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 202 locations, 68 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 34.0s, OverallIterations: 38, TraceHistogramMax: 2, AutomataDifference: 26.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 5913 SDtfs, 9534 SDslu, 16377 SDs, 0 SdLazy, 20148 SolverSat, 1046 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 17.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 586 GetRequests, 223 SyntacticMatches, 1 SemanticMatches, 362 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 599 ImplicationChecksByTransitivity, 6.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=313occurred in iteration=37, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 37 MinimizatonAttempts, 3428 StatesRemovedByMinimization, 33 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 4.4s InterpolantComputationTime, 1308 NumberOfCodeBlocks, 1308 NumberOfCodeBlocksAsserted, 41 NumberOfCheckSat, 1222 ConstructedInterpolants, 12 QuantifiedInterpolants, 417928 SizeOfPredicates, 19 NumberOfNonLiveVariables, 595 ConjunctsInSsa, 47 ConjunctsInUnsatCore, 40 InterpolantComputations, 34 PerfectInterpolantSequences, 12/19 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...