./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../sv-benchmarks/c/forester-heap/sll-token-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version 906a4fb5 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/forester-heap/sll-token-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-MemCleanup-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-memcleanup) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 95135695b4ab9cb9c416390540cae35b9fbb32e4 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-memcleanup) --- Real Ultimate output --- This is Ultimate 0.1.25-906a4fb [2020-10-19 18:26:16,578 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-19 18:26:16,580 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-19 18:26:16,611 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-19 18:26:16,611 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-19 18:26:16,621 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-19 18:26:16,622 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-19 18:26:16,625 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-19 18:26:16,627 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-19 18:26:16,630 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-19 18:26:16,631 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-19 18:26:16,632 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-19 18:26:16,632 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-19 18:26:16,636 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-19 18:26:16,637 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-19 18:26:16,640 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-19 18:26:16,641 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-19 18:26:16,643 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-19 18:26:16,646 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-19 18:26:16,651 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-19 18:26:16,654 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-19 18:26:16,655 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-19 18:26:16,656 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-19 18:26:16,657 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-19 18:26:16,669 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-19 18:26:16,671 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-19 18:26:16,671 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-19 18:26:16,672 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-19 18:26:16,673 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-19 18:26:16,674 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-19 18:26:16,674 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-19 18:26:16,678 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-19 18:26:16,679 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-19 18:26:16,679 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-19 18:26:16,683 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-19 18:26:16,683 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-19 18:26:16,684 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-19 18:26:16,684 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-19 18:26:16,685 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-19 18:26:16,688 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-19 18:26:16,688 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-19 18:26:16,689 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-MemCleanup-32bit-Automizer_Default.epf [2020-10-19 18:26:16,733 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-19 18:26:16,733 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-19 18:26:16,735 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-19 18:26:16,735 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-19 18:26:16,735 INFO L138 SettingsManager]: * Use SBE=true [2020-10-19 18:26:16,736 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-19 18:26:16,736 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-19 18:26:16,736 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-19 18:26:16,736 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-19 18:26:16,736 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-19 18:26:16,737 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-19 18:26:16,737 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-10-19 18:26:16,738 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-10-19 18:26:16,738 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-19 18:26:16,738 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-10-19 18:26:16,738 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-19 18:26:16,739 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-19 18:26:16,740 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-19 18:26:16,740 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-19 18:26:16,740 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-19 18:26:16,741 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-19 18:26:16,741 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 18:26:16,741 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-19 18:26:16,741 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-19 18:26:16,742 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-19 18:26:16,742 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-19 18:26:16,742 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-19 18:26:16,742 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 95135695b4ab9cb9c416390540cae35b9fbb32e4 [2020-10-19 18:26:17,044 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-19 18:26:17,056 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-19 18:26:17,059 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-19 18:26:17,061 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-19 18:26:17,061 INFO L275 PluginConnector]: CDTParser initialized [2020-10-19 18:26:17,062 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/forester-heap/sll-token-1.i [2020-10-19 18:26:17,116 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/80d54ad37/0cfb320149e145a4b252e7d5aae11048/FLAG666746915 [2020-10-19 18:26:17,561 INFO L306 CDTParser]: Found 1 translation units. [2020-10-19 18:26:17,562 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-token-1.i [2020-10-19 18:26:17,579 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/80d54ad37/0cfb320149e145a4b252e7d5aae11048/FLAG666746915 [2020-10-19 18:26:17,867 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/80d54ad37/0cfb320149e145a4b252e7d5aae11048 [2020-10-19 18:26:17,871 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-19 18:26:17,878 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-19 18:26:17,880 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-19 18:26:17,881 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-19 18:26:17,887 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-19 18:26:17,888 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:26:17" (1/1) ... [2020-10-19 18:26:17,892 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f75162a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:26:17, skipping insertion in model container [2020-10-19 18:26:17,892 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:26:17" (1/1) ... [2020-10-19 18:26:17,901 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-19 18:26:17,967 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 18:26:18,308 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:26:18,394 INFO L203 MainTranslator]: Completed pre-run [2020-10-19 18:26:18,472 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:26:18,532 INFO L208 MainTranslator]: Completed translation [2020-10-19 18:26:18,533 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:26:18 WrapperNode [2020-10-19 18:26:18,533 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-19 18:26:18,533 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-19 18:26:18,534 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-19 18:26:18,534 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-19 18:26:18,548 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:26:18" (1/1) ... [2020-10-19 18:26:18,548 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:26:18" (1/1) ... [2020-10-19 18:26:18,564 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:26:18" (1/1) ... [2020-10-19 18:26:18,564 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:26:18" (1/1) ... [2020-10-19 18:26:18,584 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:26:18" (1/1) ... [2020-10-19 18:26:18,599 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:26:18" (1/1) ... [2020-10-19 18:26:18,602 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:26:18" (1/1) ... [2020-10-19 18:26:18,616 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-19 18:26:18,620 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-19 18:26:18,620 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-19 18:26:18,620 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-19 18:26:18,621 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:26:18" (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 18:26:18,685 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-19 18:26:18,685 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-19 18:26:18,685 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-19 18:26:18,685 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-19 18:26:18,686 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-19 18:26:18,686 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-19 18:26:18,687 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-19 18:26:18,687 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-19 18:26:18,687 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-19 18:26:18,688 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-19 18:26:18,688 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-19 18:26:18,689 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-19 18:26:18,689 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-19 18:26:18,689 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-19 18:26:18,689 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-19 18:26:18,689 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-19 18:26:18,689 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-19 18:26:18,691 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-19 18:26:18,692 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-19 18:26:18,692 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-19 18:26:18,692 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-19 18:26:18,692 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-19 18:26:18,692 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-19 18:26:18,692 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-19 18:26:18,693 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-19 18:26:18,693 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-19 18:26:18,693 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-19 18:26:18,693 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-19 18:26:18,693 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-19 18:26:18,694 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-19 18:26:18,694 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-19 18:26:18,694 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-19 18:26:18,694 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-19 18:26:18,694 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-19 18:26:18,694 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-19 18:26:18,694 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-19 18:26:18,694 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-19 18:26:18,695 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-19 18:26:18,695 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-19 18:26:18,695 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-19 18:26:18,695 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-19 18:26:18,695 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-19 18:26:18,696 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-19 18:26:18,696 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-19 18:26:18,696 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-19 18:26:18,698 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-19 18:26:18,698 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-19 18:26:18,698 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-19 18:26:18,698 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-19 18:26:18,698 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-19 18:26:18,698 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-19 18:26:18,699 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-19 18:26:18,699 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-19 18:26:18,699 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-19 18:26:18,699 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-19 18:26:18,699 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-19 18:26:18,700 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-19 18:26:18,700 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-19 18:26:18,700 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-19 18:26:18,700 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-19 18:26:18,701 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-19 18:26:18,701 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-19 18:26:18,701 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-19 18:26:18,701 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-19 18:26:18,701 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-19 18:26:18,701 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-19 18:26:18,702 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-19 18:26:18,702 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-19 18:26:18,703 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-19 18:26:18,703 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-19 18:26:18,703 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-19 18:26:18,703 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-19 18:26:18,703 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-19 18:26:18,704 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-19 18:26:18,704 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-19 18:26:18,705 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-19 18:26:18,705 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-19 18:26:18,706 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-19 18:26:18,706 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-19 18:26:18,706 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-19 18:26:18,706 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-19 18:26:18,706 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-19 18:26:18,707 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-19 18:26:18,707 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-19 18:26:18,707 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-19 18:26:18,707 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-19 18:26:18,707 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-19 18:26:18,708 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-19 18:26:18,708 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-19 18:26:18,708 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-19 18:26:18,709 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-19 18:26:18,709 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-19 18:26:18,709 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-19 18:26:18,709 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-19 18:26:18,709 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-19 18:26:18,709 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-19 18:26:18,710 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-19 18:26:18,710 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-19 18:26:18,710 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-19 18:26:18,710 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-19 18:26:18,710 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-19 18:26:18,710 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-19 18:26:18,711 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-19 18:26:18,711 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-19 18:26:18,711 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-19 18:26:18,711 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-19 18:26:18,711 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-19 18:26:18,711 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-19 18:26:18,712 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-19 18:26:18,712 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-19 18:26:18,712 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-19 18:26:18,712 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-19 18:26:18,712 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-19 18:26:18,712 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-19 18:26:18,713 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-19 18:26:18,713 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-19 18:26:18,713 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-19 18:26:18,714 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-19 18:26:18,714 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-19 18:26:18,714 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-19 18:26:18,714 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-19 18:26:18,714 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-19 18:26:18,714 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-19 18:26:19,452 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-19 18:26:19,452 INFO L298 CfgBuilder]: Removed 15 assume(true) statements. [2020-10-19 18:26:19,454 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:26:19 BoogieIcfgContainer [2020-10-19 18:26:19,454 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-19 18:26:19,455 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-19 18:26:19,455 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-19 18:26:19,459 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-19 18:26:19,459 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.10 06:26:17" (1/3) ... [2020-10-19 18:26:19,460 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@543c72a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 06:26:19, skipping insertion in model container [2020-10-19 18:26:19,460 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:26:18" (2/3) ... [2020-10-19 18:26:19,461 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@543c72a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 06:26:19, skipping insertion in model container [2020-10-19 18:26:19,461 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:26:19" (3/3) ... [2020-10-19 18:26:19,462 INFO L111 eAbstractionObserver]: Analyzing ICFG sll-token-1.i [2020-10-19 18:26:19,474 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-19 18:26:19,481 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 49 error locations. [2020-10-19 18:26:19,497 INFO L253 AbstractCegarLoop]: Starting to check reachability of 49 error locations. [2020-10-19 18:26:19,517 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-19 18:26:19,517 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-19 18:26:19,517 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-19 18:26:19,517 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-19 18:26:19,518 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-19 18:26:19,518 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-19 18:26:19,518 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-19 18:26:19,518 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-19 18:26:19,539 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states. [2020-10-19 18:26:19,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-19 18:26:19,548 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:26:19,549 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:26:19,550 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr42ASSERT_VIOLATIONMEMORY_FREE, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr35ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr47ENSURES_VIOLATIONMEMORY_LEAK, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr44ASSERT_VIOLATIONMEMORY_FREE, mainErr46ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr43ASSERT_VIOLATIONMEMORY_FREE, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr34ASSERT_VIOLATIONMEMORY_FREE, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr36ASSERT_VIOLATIONMEMORY_FREE, mainErr38REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr41ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr45ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-10-19 18:26:19,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:26:19,556 INFO L82 PathProgramCache]: Analyzing trace with hash -189780735, now seen corresponding path program 1 times [2020-10-19 18:26:19,565 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:26:19,566 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989653478] [2020-10-19 18:26:19,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:26:19,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:19,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:26:19,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:19,796 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 18:26:19,797 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989653478] [2020-10-19 18:26:19,797 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:26:19,798 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 18:26:19,799 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501364475] [2020-10-19 18:26:19,803 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:26:19,804 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:26:19,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:26:19,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:26:19,820 INFO L87 Difference]: Start difference. First operand 127 states. Second operand 4 states. [2020-10-19 18:26:20,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:26:20,200 INFO L93 Difference]: Finished difference Result 136 states and 145 transitions. [2020-10-19 18:26:20,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:26:20,203 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-10-19 18:26:20,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:26:20,215 INFO L225 Difference]: With dead ends: 136 [2020-10-19 18:26:20,215 INFO L226 Difference]: Without dead ends: 133 [2020-10-19 18:26:20,218 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 18:26:20,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-10-19 18:26:20,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 114. [2020-10-19 18:26:20,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-10-19 18:26:20,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 121 transitions. [2020-10-19 18:26:20,272 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 121 transitions. Word has length 7 [2020-10-19 18:26:20,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:26:20,273 INFO L481 AbstractCegarLoop]: Abstraction has 114 states and 121 transitions. [2020-10-19 18:26:20,273 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:26:20,274 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 121 transitions. [2020-10-19 18:26:20,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-19 18:26:20,274 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:26:20,275 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:26:20,275 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-19 18:26:20,276 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr42ASSERT_VIOLATIONMEMORY_FREE, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr35ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr47ENSURES_VIOLATIONMEMORY_LEAK, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr44ASSERT_VIOLATIONMEMORY_FREE, mainErr46ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr43ASSERT_VIOLATIONMEMORY_FREE, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr34ASSERT_VIOLATIONMEMORY_FREE, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr36ASSERT_VIOLATIONMEMORY_FREE, mainErr38REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr41ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr45ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-10-19 18:26:20,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:26:20,276 INFO L82 PathProgramCache]: Analyzing trace with hash -189780734, now seen corresponding path program 1 times [2020-10-19 18:26:20,277 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:26:20,277 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395765004] [2020-10-19 18:26:20,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:26:20,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:20,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:26:20,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:20,386 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 18:26:20,388 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395765004] [2020-10-19 18:26:20,388 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:26:20,389 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 18:26:20,389 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716943599] [2020-10-19 18:26:20,393 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:26:20,394 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:26:20,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:26:20,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:26:20,395 INFO L87 Difference]: Start difference. First operand 114 states and 121 transitions. Second operand 4 states. [2020-10-19 18:26:20,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:26:20,735 INFO L93 Difference]: Finished difference Result 139 states and 147 transitions. [2020-10-19 18:26:20,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:26:20,736 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-10-19 18:26:20,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:26:20,738 INFO L225 Difference]: With dead ends: 139 [2020-10-19 18:26:20,738 INFO L226 Difference]: Without dead ends: 139 [2020-10-19 18:26:20,739 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 18:26:20,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-10-19 18:26:20,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 112. [2020-10-19 18:26:20,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-10-19 18:26:20,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 119 transitions. [2020-10-19 18:26:20,751 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 119 transitions. Word has length 7 [2020-10-19 18:26:20,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:26:20,751 INFO L481 AbstractCegarLoop]: Abstraction has 112 states and 119 transitions. [2020-10-19 18:26:20,752 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:26:20,752 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 119 transitions. [2020-10-19 18:26:20,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-19 18:26:20,752 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:26:20,753 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:26:20,753 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-19 18:26:20,753 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr42ASSERT_VIOLATIONMEMORY_FREE, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr35ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr47ENSURES_VIOLATIONMEMORY_LEAK, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr44ASSERT_VIOLATIONMEMORY_FREE, mainErr46ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr43ASSERT_VIOLATIONMEMORY_FREE, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr34ASSERT_VIOLATIONMEMORY_FREE, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr36ASSERT_VIOLATIONMEMORY_FREE, mainErr38REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr41ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr45ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-10-19 18:26:20,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:26:20,754 INFO L82 PathProgramCache]: Analyzing trace with hash 1145035767, now seen corresponding path program 1 times [2020-10-19 18:26:20,754 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:26:20,755 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971693113] [2020-10-19 18:26:20,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:26:20,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:20,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:26:20,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:20,908 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 18:26:20,911 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971693113] [2020-10-19 18:26:20,912 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:26:20,912 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 18:26:20,912 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357240753] [2020-10-19 18:26:20,913 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-19 18:26:20,913 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:26:20,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-19 18:26:20,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-19 18:26:20,915 INFO L87 Difference]: Start difference. First operand 112 states and 119 transitions. Second operand 5 states. [2020-10-19 18:26:21,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:26:21,264 INFO L93 Difference]: Finished difference Result 117 states and 126 transitions. [2020-10-19 18:26:21,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-19 18:26:21,264 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-10-19 18:26:21,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:26:21,267 INFO L225 Difference]: With dead ends: 117 [2020-10-19 18:26:21,268 INFO L226 Difference]: Without dead ends: 117 [2020-10-19 18:26:21,269 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-19 18:26:21,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-10-19 18:26:21,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 101. [2020-10-19 18:26:21,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-19 18:26:21,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 110 transitions. [2020-10-19 18:26:21,290 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 110 transitions. Word has length 12 [2020-10-19 18:26:21,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:26:21,291 INFO L481 AbstractCegarLoop]: Abstraction has 101 states and 110 transitions. [2020-10-19 18:26:21,291 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-19 18:26:21,291 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 110 transitions. [2020-10-19 18:26:21,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-19 18:26:21,292 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:26:21,292 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:26:21,293 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-19 18:26:21,293 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr42ASSERT_VIOLATIONMEMORY_FREE, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr35ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr47ENSURES_VIOLATIONMEMORY_LEAK, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr44ASSERT_VIOLATIONMEMORY_FREE, mainErr46ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr43ASSERT_VIOLATIONMEMORY_FREE, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr34ASSERT_VIOLATIONMEMORY_FREE, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr36ASSERT_VIOLATIONMEMORY_FREE, mainErr38REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr41ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr45ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-10-19 18:26:21,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:26:21,297 INFO L82 PathProgramCache]: Analyzing trace with hash 1145035768, now seen corresponding path program 1 times [2020-10-19 18:26:21,299 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:26:21,300 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864979646] [2020-10-19 18:26:21,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:26:21,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:21,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:26:21,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:21,453 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 18:26:21,453 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864979646] [2020-10-19 18:26:21,454 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:26:21,454 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 18:26:21,454 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638672831] [2020-10-19 18:26:21,455 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-19 18:26:21,455 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:26:21,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-19 18:26:21,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-19 18:26:21,456 INFO L87 Difference]: Start difference. First operand 101 states and 110 transitions. Second operand 5 states. [2020-10-19 18:26:21,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:26:21,787 INFO L93 Difference]: Finished difference Result 177 states and 190 transitions. [2020-10-19 18:26:21,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-19 18:26:21,788 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-10-19 18:26:21,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:26:21,791 INFO L225 Difference]: With dead ends: 177 [2020-10-19 18:26:21,791 INFO L226 Difference]: Without dead ends: 177 [2020-10-19 18:26:21,792 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-19 18:26:21,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2020-10-19 18:26:21,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 130. [2020-10-19 18:26:21,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-10-19 18:26:21,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 146 transitions. [2020-10-19 18:26:21,803 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 146 transitions. Word has length 12 [2020-10-19 18:26:21,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:26:21,804 INFO L481 AbstractCegarLoop]: Abstraction has 130 states and 146 transitions. [2020-10-19 18:26:21,804 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-19 18:26:21,805 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 146 transitions. [2020-10-19 18:26:21,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-19 18:26:21,805 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:26:21,806 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:26:21,806 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-19 18:26:21,807 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr42ASSERT_VIOLATIONMEMORY_FREE, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr35ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr47ENSURES_VIOLATIONMEMORY_LEAK, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr44ASSERT_VIOLATIONMEMORY_FREE, mainErr46ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr43ASSERT_VIOLATIONMEMORY_FREE, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr34ASSERT_VIOLATIONMEMORY_FREE, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr36ASSERT_VIOLATIONMEMORY_FREE, mainErr38REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr41ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr45ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-10-19 18:26:21,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:26:21,807 INFO L82 PathProgramCache]: Analyzing trace with hash 1131195469, now seen corresponding path program 1 times [2020-10-19 18:26:21,808 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:26:21,808 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711976169] [2020-10-19 18:26:21,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:26:21,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:21,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:26:21,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:21,920 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 18:26:21,923 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711976169] [2020-10-19 18:26:21,924 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:26:21,924 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-19 18:26:21,924 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441704044] [2020-10-19 18:26:21,925 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-19 18:26:21,925 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:26:21,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-19 18:26:21,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-19 18:26:21,928 INFO L87 Difference]: Start difference. First operand 130 states and 146 transitions. Second operand 7 states. [2020-10-19 18:26:22,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:26:22,461 INFO L93 Difference]: Finished difference Result 192 states and 218 transitions. [2020-10-19 18:26:22,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-19 18:26:22,462 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-10-19 18:26:22,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:26:22,463 INFO L225 Difference]: With dead ends: 192 [2020-10-19 18:26:22,464 INFO L226 Difference]: Without dead ends: 192 [2020-10-19 18:26:22,464 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 18:26:22,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2020-10-19 18:26:22,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 129. [2020-10-19 18:26:22,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-10-19 18:26:22,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 145 transitions. [2020-10-19 18:26:22,475 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 145 transitions. Word has length 15 [2020-10-19 18:26:22,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:26:22,476 INFO L481 AbstractCegarLoop]: Abstraction has 129 states and 145 transitions. [2020-10-19 18:26:22,476 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-19 18:26:22,476 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 145 transitions. [2020-10-19 18:26:22,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-19 18:26:22,477 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:26:22,477 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:26:22,477 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-19 18:26:22,478 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr42ASSERT_VIOLATIONMEMORY_FREE, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr35ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr47ENSURES_VIOLATIONMEMORY_LEAK, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr44ASSERT_VIOLATIONMEMORY_FREE, mainErr46ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr43ASSERT_VIOLATIONMEMORY_FREE, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr34ASSERT_VIOLATIONMEMORY_FREE, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr36ASSERT_VIOLATIONMEMORY_FREE, mainErr38REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr41ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr45ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-10-19 18:26:22,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:26:22,479 INFO L82 PathProgramCache]: Analyzing trace with hash 1131195470, now seen corresponding path program 1 times [2020-10-19 18:26:22,479 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:26:22,479 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6186356] [2020-10-19 18:26:22,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:26:22,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:22,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:26:22,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:22,573 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 18:26:22,574 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6186356] [2020-10-19 18:26:22,574 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:26:22,574 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-19 18:26:22,575 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59882723] [2020-10-19 18:26:22,575 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-19 18:26:22,575 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:26:22,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-19 18:26:22,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-19 18:26:22,576 INFO L87 Difference]: Start difference. First operand 129 states and 145 transitions. Second operand 7 states. [2020-10-19 18:26:23,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:26:23,159 INFO L93 Difference]: Finished difference Result 214 states and 244 transitions. [2020-10-19 18:26:23,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-19 18:26:23,160 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-10-19 18:26:23,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:26:23,162 INFO L225 Difference]: With dead ends: 214 [2020-10-19 18:26:23,162 INFO L226 Difference]: Without dead ends: 214 [2020-10-19 18:26:23,162 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 18:26:23,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2020-10-19 18:26:23,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 115. [2020-10-19 18:26:23,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-10-19 18:26:23,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 130 transitions. [2020-10-19 18:26:23,172 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 130 transitions. Word has length 15 [2020-10-19 18:26:23,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:26:23,172 INFO L481 AbstractCegarLoop]: Abstraction has 115 states and 130 transitions. [2020-10-19 18:26:23,172 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-19 18:26:23,173 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 130 transitions. [2020-10-19 18:26:23,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-19 18:26:23,173 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:26:23,174 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:26:23,174 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-19 18:26:23,175 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr42ASSERT_VIOLATIONMEMORY_FREE, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr35ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr47ENSURES_VIOLATIONMEMORY_LEAK, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr44ASSERT_VIOLATIONMEMORY_FREE, mainErr46ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr43ASSERT_VIOLATIONMEMORY_FREE, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr34ASSERT_VIOLATIONMEMORY_FREE, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr36ASSERT_VIOLATIONMEMORY_FREE, mainErr38REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr41ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr45ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-10-19 18:26:23,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:26:23,175 INFO L82 PathProgramCache]: Analyzing trace with hash 679644411, now seen corresponding path program 1 times [2020-10-19 18:26:23,175 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:26:23,176 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153869920] [2020-10-19 18:26:23,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:26:23,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:23,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:26:23,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:23,241 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 18:26:23,241 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153869920] [2020-10-19 18:26:23,242 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:26:23,242 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-19 18:26:23,242 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456736032] [2020-10-19 18:26:23,243 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-19 18:26:23,243 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:26:23,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-19 18:26:23,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-19 18:26:23,244 INFO L87 Difference]: Start difference. First operand 115 states and 130 transitions. Second operand 6 states. [2020-10-19 18:26:23,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:26:23,491 INFO L93 Difference]: Finished difference Result 121 states and 133 transitions. [2020-10-19 18:26:23,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-19 18:26:23,491 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-10-19 18:26:23,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:26:23,493 INFO L225 Difference]: With dead ends: 121 [2020-10-19 18:26:23,493 INFO L226 Difference]: Without dead ends: 121 [2020-10-19 18:26:23,494 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 18:26:23,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-10-19 18:26:23,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 114. [2020-10-19 18:26:23,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-10-19 18:26:23,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 129 transitions. [2020-10-19 18:26:23,506 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 129 transitions. Word has length 16 [2020-10-19 18:26:23,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:26:23,510 INFO L481 AbstractCegarLoop]: Abstraction has 114 states and 129 transitions. [2020-10-19 18:26:23,510 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-19 18:26:23,510 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 129 transitions. [2020-10-19 18:26:23,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-19 18:26:23,511 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:26:23,511 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:26:23,512 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-19 18:26:23,515 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr42ASSERT_VIOLATIONMEMORY_FREE, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr35ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr47ENSURES_VIOLATIONMEMORY_LEAK, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr44ASSERT_VIOLATIONMEMORY_FREE, mainErr46ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr43ASSERT_VIOLATIONMEMORY_FREE, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr34ASSERT_VIOLATIONMEMORY_FREE, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr36ASSERT_VIOLATIONMEMORY_FREE, mainErr38REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr41ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr45ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-10-19 18:26:23,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:26:23,516 INFO L82 PathProgramCache]: Analyzing trace with hash 679644412, now seen corresponding path program 1 times [2020-10-19 18:26:23,516 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:26:23,516 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289102122] [2020-10-19 18:26:23,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:26:23,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:23,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:26:23,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:23,624 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 18:26:23,625 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289102122] [2020-10-19 18:26:23,628 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:26:23,628 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-19 18:26:23,629 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824558261] [2020-10-19 18:26:23,629 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-19 18:26:23,629 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:26:23,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-19 18:26:23,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-19 18:26:23,630 INFO L87 Difference]: Start difference. First operand 114 states and 129 transitions. Second operand 6 states. [2020-10-19 18:26:23,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:26:23,902 INFO L93 Difference]: Finished difference Result 113 states and 128 transitions. [2020-10-19 18:26:23,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-19 18:26:23,903 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-10-19 18:26:23,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:26:23,904 INFO L225 Difference]: With dead ends: 113 [2020-10-19 18:26:23,904 INFO L226 Difference]: Without dead ends: 113 [2020-10-19 18:26:23,904 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 18:26:23,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-10-19 18:26:23,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2020-10-19 18:26:23,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-10-19 18:26:23,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 128 transitions. [2020-10-19 18:26:23,913 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 128 transitions. Word has length 16 [2020-10-19 18:26:23,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:26:23,914 INFO L481 AbstractCegarLoop]: Abstraction has 113 states and 128 transitions. [2020-10-19 18:26:23,914 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-19 18:26:23,914 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 128 transitions. [2020-10-19 18:26:23,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-19 18:26:23,915 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:26:23,915 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 18:26:23,915 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-19 18:26:23,916 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr42ASSERT_VIOLATIONMEMORY_FREE, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr35ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr47ENSURES_VIOLATIONMEMORY_LEAK, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr44ASSERT_VIOLATIONMEMORY_FREE, mainErr46ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr43ASSERT_VIOLATIONMEMORY_FREE, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr34ASSERT_VIOLATIONMEMORY_FREE, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr36ASSERT_VIOLATIONMEMORY_FREE, mainErr38REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr41ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr45ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-10-19 18:26:23,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:26:23,916 INFO L82 PathProgramCache]: Analyzing trace with hash 696071059, now seen corresponding path program 1 times [2020-10-19 18:26:23,916 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:26:23,917 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743448889] [2020-10-19 18:26:23,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:26:23,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:24,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:26:24,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:24,032 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 18:26:24,032 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743448889] [2020-10-19 18:26:24,033 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:26:24,033 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-19 18:26:24,033 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747810206] [2020-10-19 18:26:24,033 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-19 18:26:24,034 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:26:24,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-19 18:26:24,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-19 18:26:24,034 INFO L87 Difference]: Start difference. First operand 113 states and 128 transitions. Second operand 7 states. [2020-10-19 18:26:24,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:26:24,433 INFO L93 Difference]: Finished difference Result 209 states and 238 transitions. [2020-10-19 18:26:24,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-19 18:26:24,436 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-19 18:26:24,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:26:24,437 INFO L225 Difference]: With dead ends: 209 [2020-10-19 18:26:24,438 INFO L226 Difference]: Without dead ends: 209 [2020-10-19 18:26:24,439 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 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 18:26:24,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2020-10-19 18:26:24,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 112. [2020-10-19 18:26:24,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-10-19 18:26:24,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 126 transitions. [2020-10-19 18:26:24,446 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 126 transitions. Word has length 19 [2020-10-19 18:26:24,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:26:24,447 INFO L481 AbstractCegarLoop]: Abstraction has 112 states and 126 transitions. [2020-10-19 18:26:24,447 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-19 18:26:24,447 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 126 transitions. [2020-10-19 18:26:24,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-19 18:26:24,448 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:26:24,449 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 18:26:24,449 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-19 18:26:24,449 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr42ASSERT_VIOLATIONMEMORY_FREE, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr35ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr47ENSURES_VIOLATIONMEMORY_LEAK, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr44ASSERT_VIOLATIONMEMORY_FREE, mainErr46ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr43ASSERT_VIOLATIONMEMORY_FREE, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr34ASSERT_VIOLATIONMEMORY_FREE, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr36ASSERT_VIOLATIONMEMORY_FREE, mainErr38REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr41ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr45ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-10-19 18:26:24,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:26:24,450 INFO L82 PathProgramCache]: Analyzing trace with hash 1845276885, now seen corresponding path program 1 times [2020-10-19 18:26:24,450 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:26:24,450 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689266354] [2020-10-19 18:26:24,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:26:24,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:24,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:26:24,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:24,503 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 18:26:24,504 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689266354] [2020-10-19 18:26:24,504 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:26:24,504 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-19 18:26:24,505 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041213502] [2020-10-19 18:26:24,505 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-19 18:26:24,505 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:26:24,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-19 18:26:24,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-19 18:26:24,506 INFO L87 Difference]: Start difference. First operand 112 states and 126 transitions. Second operand 5 states. [2020-10-19 18:26:24,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:26:24,731 INFO L93 Difference]: Finished difference Result 163 states and 175 transitions. [2020-10-19 18:26:24,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-19 18:26:24,731 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-10-19 18:26:24,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:26:24,733 INFO L225 Difference]: With dead ends: 163 [2020-10-19 18:26:24,733 INFO L226 Difference]: Without dead ends: 163 [2020-10-19 18:26:24,734 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 18:26:24,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-10-19 18:26:24,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 111. [2020-10-19 18:26:24,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-10-19 18:26:24,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 124 transitions. [2020-10-19 18:26:24,738 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 124 transitions. Word has length 21 [2020-10-19 18:26:24,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:26:24,739 INFO L481 AbstractCegarLoop]: Abstraction has 111 states and 124 transitions. [2020-10-19 18:26:24,739 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-19 18:26:24,739 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 124 transitions. [2020-10-19 18:26:24,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-19 18:26:24,740 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:26:24,740 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 18:26:24,740 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-19 18:26:24,740 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr42ASSERT_VIOLATIONMEMORY_FREE, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr35ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr47ENSURES_VIOLATIONMEMORY_LEAK, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr44ASSERT_VIOLATIONMEMORY_FREE, mainErr46ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr43ASSERT_VIOLATIONMEMORY_FREE, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr34ASSERT_VIOLATIONMEMORY_FREE, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr36ASSERT_VIOLATIONMEMORY_FREE, mainErr38REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr41ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr45ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-10-19 18:26:24,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:26:24,741 INFO L82 PathProgramCache]: Analyzing trace with hash -1016411300, now seen corresponding path program 1 times [2020-10-19 18:26:24,741 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:26:24,741 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286730996] [2020-10-19 18:26:24,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:26:24,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:26:24,766 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:26:24,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:26:24,789 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:26:24,822 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:26:24,822 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-19 18:26:24,822 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-19 18:26:24,859 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.10 06:26:24 BoogieIcfgContainer [2020-10-19 18:26:24,859 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-19 18:26:24,860 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-19 18:26:24,860 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-19 18:26:24,860 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-19 18:26:24,861 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:26:19" (3/4) ... [2020-10-19 18:26:24,863 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-19 18:26:24,950 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-19 18:26:24,950 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-19 18:26:24,952 INFO L168 Benchmark]: Toolchain (without parser) took 7079.36 ms. Allocated memory was 1.0 GB in the beginning and 1.4 GB in the end (delta: 321.9 MB). Free memory was 943.9 MB in the beginning and 1.3 GB in the end (delta: -369.2 MB). Peak memory consumption was 355.1 MB. Max. memory is 11.5 GB. [2020-10-19 18:26:24,952 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 1.0 GB. Free memory is still 980.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:26:24,953 INFO L168 Benchmark]: CACSL2BoogieTranslator took 652.93 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.5 MB). Free memory was 943.9 MB in the beginning and 1.1 GB in the end (delta: -172.2 MB). Peak memory consumption was 21.1 MB. Max. memory is 11.5 GB. [2020-10-19 18:26:24,954 INFO L168 Benchmark]: Boogie Preprocessor took 85.68 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2020-10-19 18:26:24,954 INFO L168 Benchmark]: RCFGBuilder took 834.74 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 57.8 MB). Peak memory consumption was 57.8 MB. Max. memory is 11.5 GB. [2020-10-19 18:26:24,955 INFO L168 Benchmark]: TraceAbstraction took 5404.09 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 77.1 MB). Free memory was 1.1 GB in the beginning and 806.3 MB in the end (delta: 245.3 MB). Peak memory consumption was 322.4 MB. Max. memory is 11.5 GB. [2020-10-19 18:26:24,956 INFO L168 Benchmark]: Witness Printer took 90.14 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 104.3 MB). Free memory was 806.3 MB in the beginning and 1.3 GB in the end (delta: -506.7 MB). Peak memory consumption was 8.2 kB. Max. memory is 11.5 GB. [2020-10-19 18:26:24,959 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 1.0 GB. Free memory is still 980.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 652.93 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.5 MB). Free memory was 943.9 MB in the beginning and 1.1 GB in the end (delta: -172.2 MB). Peak memory consumption was 21.1 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 85.68 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 834.74 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 57.8 MB). Peak memory consumption was 57.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 5404.09 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 77.1 MB). Free memory was 1.1 GB in the beginning and 806.3 MB in the end (delta: 245.3 MB). Peak memory consumption was 322.4 MB. Max. memory is 11.5 GB. * Witness Printer took 90.14 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 104.3 MB). Free memory was 806.3 MB in the beginning and 1.3 GB in the end (delta: -506.7 MB). Peak memory consumption was 8.2 kB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 992]: not all allocated memory was freed not all allocated memory was freed We found a FailurePath: [L1003] SLL* head = malloc(sizeof(SLL)); VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1004] head->next = ((void*)0) VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1005] head->data = 0 VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1007] SLL* x = head; VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, x={-1:0}] [L1010] COND FALSE !(__VERIFIER_nondet_int()) [L1018] x->data = 1 VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, x={-1:0}] [L1019] x->next = malloc(sizeof(SLL)) VAL [head={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, x={-1:0}] [L1020] EXPR x->next VAL [head={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, x={-1:0}, x->next={-2:0}] [L1020] x->next->data = 2 VAL [head={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, x={-1:0}, x->next={-2:0}] [L1022] x = head VAL [head={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, x={-1:0}] [L1024] COND FALSE !(!(((void*)0) != x)) VAL [head={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, x={-1:0}] [L1026] EXPR x->data VAL [head={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, x={-1:0}, x->data=1] [L1026] COND FALSE !(1 != x->data) [L1031] EXPR x->data VAL [head={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, x={-1:0}, x->data=1] [L1031] COND TRUE !(2 == x->data) [L1031] CALL reach_error() [L992] COND FALSE !(0) [L992] __assert_fail ("0", "sll-token-1.c", 12, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 127 locations, 49 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 5.3s, OverallIterations: 11, TraceHistogramMax: 1, AutomataDifference: 3.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 889 SDtfs, 1104 SDslu, 1378 SDs, 0 SdLazy, 2821 SolverSat, 175 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 83 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=130occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 427 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 166 NumberOfCodeBlocks, 166 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 130 ConstructedInterpolants, 0 QuantifiedInterpolants, 8442 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...