./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/list-properties/list_flag-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version f470102c 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/list-properties/list_flag-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash afc88cbf4886a453fed887733400308a528b9724 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -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/list-properties/list_flag-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash afc88cbf4886a453fed887733400308a528b9724 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-11-28 20:15:22,529 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 20:15:22,532 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 20:15:22,552 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 20:15:22,552 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 20:15:22,554 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 20:15:22,557 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 20:15:22,570 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 20:15:22,572 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 20:15:22,574 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 20:15:22,576 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 20:15:22,577 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 20:15:22,577 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 20:15:22,579 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 20:15:22,580 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 20:15:22,581 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 20:15:22,582 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 20:15:22,583 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 20:15:22,585 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 20:15:22,587 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 20:15:22,588 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 20:15:22,590 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 20:15:22,591 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 20:15:22,592 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 20:15:22,594 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 20:15:22,594 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 20:15:22,595 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 20:15:22,596 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 20:15:22,596 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 20:15:22,597 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 20:15:22,598 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 20:15:22,599 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 20:15:22,599 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 20:15:22,600 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 20:15:22,601 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 20:15:22,602 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 20:15:22,602 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 20:15:22,603 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 20:15:22,603 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 20:15:22,604 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 20:15:22,605 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 20:15:22,606 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2019-11-28 20:15:22,625 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 20:15:22,626 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 20:15:22,628 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 20:15:22,629 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 20:15:22,629 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 20:15:22,629 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 20:15:22,629 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 20:15:22,630 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-28 20:15:22,630 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 20:15:22,630 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 20:15:22,631 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 20:15:22,632 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-11-28 20:15:22,632 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-11-28 20:15:22,633 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-11-28 20:15:22,633 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 20:15:22,633 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-28 20:15:22,634 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 20:15:22,634 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 20:15:22,634 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 20:15:22,634 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 20:15:22,635 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 20:15:22,635 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 20:15:22,636 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 20:15:22,636 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 20:15:22,636 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 20:15:22,636 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 20:15:22,637 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 20:15:22,637 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 20:15:22,637 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> afc88cbf4886a453fed887733400308a528b9724 [2019-11-28 20:15:22,961 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 20:15:22,984 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 20:15:22,988 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 20:15:22,990 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 20:15:22,990 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 20:15:22,992 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-properties/list_flag-2.i [2019-11-28 20:15:23,055 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3f106411/d91cf07af3554f5d912f78a62badf0ec/FLAG788d51a1f [2019-11-28 20:15:23,548 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 20:15:23,549 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-properties/list_flag-2.i [2019-11-28 20:15:23,565 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3f106411/d91cf07af3554f5d912f78a62badf0ec/FLAG788d51a1f [2019-11-28 20:15:23,852 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3f106411/d91cf07af3554f5d912f78a62badf0ec [2019-11-28 20:15:23,855 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 20:15:23,856 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-28 20:15:23,858 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 20:15:23,858 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 20:15:23,861 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 20:15:23,863 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 08:15:23" (1/1) ... [2019-11-28 20:15:23,866 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@504566a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:15:23, skipping insertion in model container [2019-11-28 20:15:23,866 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 08:15:23" (1/1) ... [2019-11-28 20:15:23,874 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 20:15:23,931 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 20:15:24,381 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 20:15:24,396 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 20:15:24,470 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 20:15:24,537 INFO L208 MainTranslator]: Completed translation [2019-11-28 20:15:24,538 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:15:24 WrapperNode [2019-11-28 20:15:24,539 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 20:15:24,540 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 20:15:24,540 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 20:15:24,540 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 20:15:24,554 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:15:24" (1/1) ... [2019-11-28 20:15:24,555 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:15:24" (1/1) ... [2019-11-28 20:15:24,583 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:15:24" (1/1) ... [2019-11-28 20:15:24,584 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:15:24" (1/1) ... [2019-11-28 20:15:24,601 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:15:24" (1/1) ... [2019-11-28 20:15:24,611 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:15:24" (1/1) ... [2019-11-28 20:15:24,618 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:15:24" (1/1) ... [2019-11-28 20:15:24,631 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 20:15:24,633 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 20:15:24,633 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 20:15:24,633 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 20:15:24,634 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:15:24" (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 [2019-11-28 20:15:24,690 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-28 20:15:24,690 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 20:15:24,690 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-11-28 20:15:24,691 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-11-28 20:15:24,691 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2019-11-28 20:15:24,691 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2019-11-28 20:15:24,691 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2019-11-28 20:15:24,692 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-11-28 20:15:24,692 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-28 20:15:24,692 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-28 20:15:24,692 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-28 20:15:24,693 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-11-28 20:15:24,693 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-11-28 20:15:24,693 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-11-28 20:15:24,694 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-11-28 20:15:24,694 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-11-28 20:15:24,694 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-11-28 20:15:24,694 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-11-28 20:15:24,695 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-11-28 20:15:24,695 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-11-28 20:15:24,695 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-11-28 20:15:24,695 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-11-28 20:15:24,696 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-11-28 20:15:24,696 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-11-28 20:15:24,696 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-11-28 20:15:24,696 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-11-28 20:15:24,697 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-11-28 20:15:24,697 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-11-28 20:15:24,697 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-11-28 20:15:24,697 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2019-11-28 20:15:24,698 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2019-11-28 20:15:24,698 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2019-11-28 20:15:24,698 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-11-28 20:15:24,698 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-11-28 20:15:24,698 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-11-28 20:15:24,699 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-11-28 20:15:24,699 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-11-28 20:15:24,699 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-11-28 20:15:24,699 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-11-28 20:15:24,699 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-11-28 20:15:24,700 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-11-28 20:15:24,700 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-11-28 20:15:24,700 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-11-28 20:15:24,700 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-11-28 20:15:24,700 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-11-28 20:15:24,701 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-11-28 20:15:24,701 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-11-28 20:15:24,701 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-11-28 20:15:24,701 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-11-28 20:15:24,701 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-11-28 20:15:24,702 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-11-28 20:15:24,702 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-11-28 20:15:24,702 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-11-28 20:15:24,702 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-11-28 20:15:24,703 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-11-28 20:15:24,703 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-11-28 20:15:24,703 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-11-28 20:15:24,703 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-11-28 20:15:24,703 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-11-28 20:15:24,704 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-11-28 20:15:24,704 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-11-28 20:15:24,704 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-11-28 20:15:24,704 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-11-28 20:15:24,704 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-11-28 20:15:24,705 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-11-28 20:15:24,705 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-11-28 20:15:24,705 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-28 20:15:24,705 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-11-28 20:15:24,706 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-11-28 20:15:24,706 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-28 20:15:24,706 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-11-28 20:15:24,706 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-11-28 20:15:24,706 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-11-28 20:15:24,707 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-11-28 20:15:24,707 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-11-28 20:15:24,707 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-11-28 20:15:24,707 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-11-28 20:15:24,707 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-11-28 20:15:24,708 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-28 20:15:24,708 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-11-28 20:15:24,708 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-11-28 20:15:24,708 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-11-28 20:15:24,709 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-11-28 20:15:24,709 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-11-28 20:15:24,709 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-11-28 20:15:24,709 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-11-28 20:15:24,709 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-11-28 20:15:24,710 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-11-28 20:15:24,710 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-11-28 20:15:24,710 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-11-28 20:15:24,710 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-11-28 20:15:24,710 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-11-28 20:15:24,711 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-11-28 20:15:24,711 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-11-28 20:15:24,711 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-11-28 20:15:24,711 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-11-28 20:15:24,711 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-11-28 20:15:24,712 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-11-28 20:15:24,712 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-11-28 20:15:24,712 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-11-28 20:15:24,712 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-11-28 20:15:24,712 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-11-28 20:15:24,713 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-11-28 20:15:24,713 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-11-28 20:15:24,713 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-11-28 20:15:24,713 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-11-28 20:15:24,713 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-11-28 20:15:24,714 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-11-28 20:15:24,714 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-11-28 20:15:24,714 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-11-28 20:15:24,714 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-11-28 20:15:24,714 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-11-28 20:15:24,715 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-11-28 20:15:24,715 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-11-28 20:15:24,715 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-11-28 20:15:24,715 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-11-28 20:15:24,715 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-11-28 20:15:24,716 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-11-28 20:15:24,716 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-11-28 20:15:24,716 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-28 20:15:24,716 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-28 20:15:24,716 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-28 20:15:24,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-28 20:15:24,717 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-28 20:15:24,717 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-28 20:15:24,717 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-28 20:15:24,717 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 20:15:24,718 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-28 20:15:25,058 INFO L691 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-11-28 20:15:25,373 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 20:15:25,373 INFO L287 CfgBuilder]: Removed 3 assume(true) statements. [2019-11-28 20:15:25,375 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:15:25 BoogieIcfgContainer [2019-11-28 20:15:25,375 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 20:15:25,376 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 20:15:25,377 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 20:15:25,380 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 20:15:25,380 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 08:15:23" (1/3) ... [2019-11-28 20:15:25,381 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bdd1563 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 08:15:25, skipping insertion in model container [2019-11-28 20:15:25,382 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:15:24" (2/3) ... [2019-11-28 20:15:25,382 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bdd1563 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 08:15:25, skipping insertion in model container [2019-11-28 20:15:25,382 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:15:25" (3/3) ... [2019-11-28 20:15:25,384 INFO L109 eAbstractionObserver]: Analyzing ICFG list_flag-2.i [2019-11-28 20:15:25,395 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 20:15:25,403 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 22 error locations. [2019-11-28 20:15:25,416 INFO L249 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2019-11-28 20:15:25,437 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 20:15:25,437 INFO L374 AbstractCegarLoop]: Hoare is false [2019-11-28 20:15:25,438 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 20:15:25,438 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 20:15:25,438 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 20:15:25,438 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 20:15:25,439 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 20:15:25,439 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 20:15:25,456 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states. [2019-11-28 20:15:25,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-28 20:15:25,465 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:15:25,466 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 20:15:25,467 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr21ENSURES_VIOLATIONMEMORY_LEAK, mainErr20ASSERT_VIOLATIONMEMORY_LEAK, mainErr5REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2019-11-28 20:15:25,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:15:25,474 INFO L82 PathProgramCache]: Analyzing trace with hash 2131838764, now seen corresponding path program 1 times [2019-11-28 20:15:25,483 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:15:25,484 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337303865] [2019-11-28 20:15:25,485 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:15:25,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:15:25,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:15:25,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:15:25,658 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337303865] [2019-11-28 20:15:25,659 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 20:15:25,660 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-28 20:15:25,661 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197733526] [2019-11-28 20:15:25,666 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-28 20:15:25,667 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:15:25,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-28 20:15:25,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 20:15:25,687 INFO L87 Difference]: Start difference. First operand 62 states. Second operand 3 states. [2019-11-28 20:15:25,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:15:25,882 INFO L93 Difference]: Finished difference Result 62 states and 68 transitions. [2019-11-28 20:15:25,883 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-28 20:15:25,885 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2019-11-28 20:15:25,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:15:25,894 INFO L225 Difference]: With dead ends: 62 [2019-11-28 20:15:25,895 INFO L226 Difference]: Without dead ends: 55 [2019-11-28 20:15:25,897 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 20:15:25,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2019-11-28 20:15:25,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2019-11-28 20:15:25,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2019-11-28 20:15:25,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions. [2019-11-28 20:15:25,942 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 59 transitions. Word has length 10 [2019-11-28 20:15:25,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:15:25,943 INFO L462 AbstractCegarLoop]: Abstraction has 55 states and 59 transitions. [2019-11-28 20:15:25,943 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-28 20:15:25,943 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 59 transitions. [2019-11-28 20:15:25,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-28 20:15:25,944 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:15:25,944 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 20:15:25,945 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr21ENSURES_VIOLATIONMEMORY_LEAK, mainErr20ASSERT_VIOLATIONMEMORY_LEAK, mainErr5REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2019-11-28 20:15:25,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:15:25,946 INFO L82 PathProgramCache]: Analyzing trace with hash 1662458549, now seen corresponding path program 1 times [2019-11-28 20:15:25,946 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:15:25,947 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695082599] [2019-11-28 20:15:25,947 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:15:25,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:15:26,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:15:26,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:15:26,054 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695082599] [2019-11-28 20:15:26,055 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 20:15:26,055 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-28 20:15:26,056 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295299145] [2019-11-28 20:15:26,057 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-28 20:15:26,058 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:15:26,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-28 20:15:26,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-28 20:15:26,059 INFO L87 Difference]: Start difference. First operand 55 states and 59 transitions. Second operand 5 states. [2019-11-28 20:15:26,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:15:26,348 INFO L93 Difference]: Finished difference Result 91 states and 98 transitions. [2019-11-28 20:15:26,349 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-28 20:15:26,349 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2019-11-28 20:15:26,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:15:26,352 INFO L225 Difference]: With dead ends: 91 [2019-11-28 20:15:26,352 INFO L226 Difference]: Without dead ends: 91 [2019-11-28 20:15:26,353 INFO L630 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 [2019-11-28 20:15:26,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2019-11-28 20:15:26,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 72. [2019-11-28 20:15:26,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2019-11-28 20:15:26,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 90 transitions. [2019-11-28 20:15:26,375 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 90 transitions. Word has length 11 [2019-11-28 20:15:26,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:15:26,376 INFO L462 AbstractCegarLoop]: Abstraction has 72 states and 90 transitions. [2019-11-28 20:15:26,376 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-28 20:15:26,376 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 90 transitions. [2019-11-28 20:15:26,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-28 20:15:26,379 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:15:26,379 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 20:15:26,380 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr21ENSURES_VIOLATIONMEMORY_LEAK, mainErr20ASSERT_VIOLATIONMEMORY_LEAK, mainErr5REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2019-11-28 20:15:26,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:15:26,381 INFO L82 PathProgramCache]: Analyzing trace with hash 1662458548, now seen corresponding path program 1 times [2019-11-28 20:15:26,381 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:15:26,381 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61244888] [2019-11-28 20:15:26,382 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:15:26,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:15:26,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:15:26,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:15:26,495 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61244888] [2019-11-28 20:15:26,496 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 20:15:26,496 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-28 20:15:26,496 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504269965] [2019-11-28 20:15:26,497 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-28 20:15:26,497 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:15:26,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-28 20:15:26,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-28 20:15:26,500 INFO L87 Difference]: Start difference. First operand 72 states and 90 transitions. Second operand 5 states. [2019-11-28 20:15:26,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:15:26,686 INFO L93 Difference]: Finished difference Result 67 states and 75 transitions. [2019-11-28 20:15:26,687 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-28 20:15:26,687 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2019-11-28 20:15:26,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:15:26,688 INFO L225 Difference]: With dead ends: 67 [2019-11-28 20:15:26,688 INFO L226 Difference]: Without dead ends: 67 [2019-11-28 20:15:26,689 INFO L630 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 [2019-11-28 20:15:26,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2019-11-28 20:15:26,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2019-11-28 20:15:26,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2019-11-28 20:15:26,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 75 transitions. [2019-11-28 20:15:26,697 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 75 transitions. Word has length 11 [2019-11-28 20:15:26,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:15:26,698 INFO L462 AbstractCegarLoop]: Abstraction has 67 states and 75 transitions. [2019-11-28 20:15:26,698 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-28 20:15:26,698 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 75 transitions. [2019-11-28 20:15:26,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-28 20:15:26,699 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:15:26,699 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 20:15:26,700 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr21ENSURES_VIOLATIONMEMORY_LEAK, mainErr20ASSERT_VIOLATIONMEMORY_LEAK, mainErr5REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2019-11-28 20:15:26,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:15:26,700 INFO L82 PathProgramCache]: Analyzing trace with hash -1397561430, now seen corresponding path program 1 times [2019-11-28 20:15:26,701 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:15:26,701 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754778894] [2019-11-28 20:15:26,701 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:15:26,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:15:26,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:15:26,811 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:15:26,811 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754778894] [2019-11-28 20:15:26,811 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 20:15:26,812 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-28 20:15:26,812 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558158208] [2019-11-28 20:15:26,813 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-28 20:15:26,814 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:15:26,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-28 20:15:26,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-28 20:15:26,815 INFO L87 Difference]: Start difference. First operand 67 states and 75 transitions. Second operand 7 states. [2019-11-28 20:15:27,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:15:27,084 INFO L93 Difference]: Finished difference Result 103 states and 111 transitions. [2019-11-28 20:15:27,084 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-28 20:15:27,085 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2019-11-28 20:15:27,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:15:27,086 INFO L225 Difference]: With dead ends: 103 [2019-11-28 20:15:27,086 INFO L226 Difference]: Without dead ends: 103 [2019-11-28 20:15:27,087 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2019-11-28 20:15:27,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2019-11-28 20:15:27,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 71. [2019-11-28 20:15:27,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2019-11-28 20:15:27,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 80 transitions. [2019-11-28 20:15:27,096 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 80 transitions. Word has length 18 [2019-11-28 20:15:27,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:15:27,096 INFO L462 AbstractCegarLoop]: Abstraction has 71 states and 80 transitions. [2019-11-28 20:15:27,096 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-28 20:15:27,097 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 80 transitions. [2019-11-28 20:15:27,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-28 20:15:27,098 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:15:27,098 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 20:15:27,098 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr21ENSURES_VIOLATIONMEMORY_LEAK, mainErr20ASSERT_VIOLATIONMEMORY_LEAK, mainErr5REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2019-11-28 20:15:27,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:15:27,099 INFO L82 PathProgramCache]: Analyzing trace with hash -1397593132, now seen corresponding path program 1 times [2019-11-28 20:15:27,099 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:15:27,099 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598414581] [2019-11-28 20:15:27,100 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:15:27,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:15:27,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:15:27,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:15:27,206 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598414581] [2019-11-28 20:15:27,206 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 20:15:27,206 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-28 20:15:27,207 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193608548] [2019-11-28 20:15:27,207 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-28 20:15:27,208 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:15:27,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-28 20:15:27,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-28 20:15:27,209 INFO L87 Difference]: Start difference. First operand 71 states and 80 transitions. Second operand 7 states. [2019-11-28 20:15:27,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:15:27,476 INFO L93 Difference]: Finished difference Result 101 states and 109 transitions. [2019-11-28 20:15:27,477 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-28 20:15:27,477 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2019-11-28 20:15:27,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:15:27,478 INFO L225 Difference]: With dead ends: 101 [2019-11-28 20:15:27,479 INFO L226 Difference]: Without dead ends: 101 [2019-11-28 20:15:27,481 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2019-11-28 20:15:27,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2019-11-28 20:15:27,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 75. [2019-11-28 20:15:27,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2019-11-28 20:15:27,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 85 transitions. [2019-11-28 20:15:27,494 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 85 transitions. Word has length 18 [2019-11-28 20:15:27,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:15:27,494 INFO L462 AbstractCegarLoop]: Abstraction has 75 states and 85 transitions. [2019-11-28 20:15:27,494 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-28 20:15:27,494 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 85 transitions. [2019-11-28 20:15:27,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-28 20:15:27,497 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:15:27,498 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 20:15:27,498 INFO L410 AbstractCegarLoop]: === Iteration 6 === [mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr21ENSURES_VIOLATIONMEMORY_LEAK, mainErr20ASSERT_VIOLATIONMEMORY_LEAK, mainErr5REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2019-11-28 20:15:27,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:15:27,498 INFO L82 PathProgramCache]: Analyzing trace with hash -1397592971, now seen corresponding path program 1 times [2019-11-28 20:15:27,499 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:15:27,499 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531300600] [2019-11-28 20:15:27,499 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:15:27,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:15:27,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:15:27,599 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:15:27,599 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-28 20:15:27,612 WARN L417 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2019-11-28 20:15:27,628 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 08:15:27 BoogieIcfgContainer [2019-11-28 20:15:27,629 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 20:15:27,629 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 20:15:27,629 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 20:15:27,630 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 20:15:27,630 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:15:25" (3/4) ... [2019-11-28 20:15:27,635 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-28 20:15:27,635 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 20:15:27,638 INFO L168 Benchmark]: Toolchain (without parser) took 3780.41 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 146.3 MB). Free memory was 961.7 MB in the beginning and 888.6 MB in the end (delta: 73.1 MB). Peak memory consumption was 219.4 MB. Max. memory is 11.5 GB. [2019-11-28 20:15:27,639 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 20:15:27,640 INFO L168 Benchmark]: CACSL2BoogieTranslator took 682.02 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 146.3 MB). Free memory was 956.3 MB in the beginning and 1.1 GB in the end (delta: -171.4 MB). Peak memory consumption was 20.5 MB. Max. memory is 11.5 GB. [2019-11-28 20:15:27,641 INFO L168 Benchmark]: Boogie Preprocessor took 92.29 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. [2019-11-28 20:15:27,642 INFO L168 Benchmark]: RCFGBuilder took 742.89 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: 51.2 MB). Peak memory consumption was 51.2 MB. Max. memory is 11.5 GB. [2019-11-28 20:15:27,643 INFO L168 Benchmark]: TraceAbstraction took 2252.46 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 888.6 MB in the end (delta: 181.3 MB). Peak memory consumption was 181.3 MB. Max. memory is 11.5 GB. [2019-11-28 20:15:27,643 INFO L168 Benchmark]: Witness Printer took 5.91 ms. Allocated memory is still 1.2 GB. Free memory is still 888.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 20:15:27,647 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 682.02 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 146.3 MB). Free memory was 956.3 MB in the beginning and 1.1 GB in the end (delta: -171.4 MB). Peak memory consumption was 20.5 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 92.29 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 742.89 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: 51.2 MB). Peak memory consumption was 51.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2252.46 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 888.6 MB in the end (delta: 181.3 MB). Peak memory consumption was 181.3 MB. Max. memory is 11.5 GB. * Witness Printer took 5.91 ms. Allocated memory is still 1.2 GB. Free memory is still 888.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 520]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 520. Possible FailurePath: [L521] int flag = __VERIFIER_nondet_int(); [L522] List p, a, t; [L523] a = (List) malloc(sizeof(struct node)) VAL [a={-1:0}, flag=1, malloc(sizeof(struct node))={-1:0}] [L524] COND FALSE !(a == 0) VAL [a={-1:0}, flag=1, malloc(sizeof(struct node))={-1:0}] [L525] p = a VAL [a={-1:0}, flag=1, malloc(sizeof(struct node))={-1:0}, p={-1:0}] [L526] COND FALSE !(__VERIFIER_nondet_int()) [L537] p->h = 3 VAL [a={-1:0}, flag=1, malloc(sizeof(struct node))={-1:0}, p={-1:0}] [L538] p = a VAL [a={-1:0}, flag=1, malloc(sizeof(struct node))={-1:0}, p={-1:0}] [L539] COND TRUE \read(flag) VAL [a={-1:0}, flag=1, malloc(sizeof(struct node))={-1:0}, p={-1:0}] [L540] EXPR p->h VAL [a={-1:0}, flag=1, malloc(sizeof(struct node))={-1:0}, p={-1:0}, p->h=3] [L540] COND FALSE !(p->h == 1) [L545] EXPR p->h VAL [a={-1:0}, flag=1, malloc(sizeof(struct node))={-1:0}, p={-1:0}, p->h=3] [L545] COND FALSE !(p->h != 3) - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 78 locations, 22 error locations. Result: UNSAFE, OverallTime: 2.1s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 198 SDtfs, 350 SDslu, 297 SDs, 0 SdLazy, 605 SolverSat, 57 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 36 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=75occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 77 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 86 NumberOfCodeBlocks, 86 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 63 ConstructedInterpolants, 0 QuantifiedInterpolants, 3522 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 1/1 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.25-f470102 [2019-11-28 20:15:29,596 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 20:15:29,598 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 20:15:29,616 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 20:15:29,617 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 20:15:29,620 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 20:15:29,622 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 20:15:29,633 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 20:15:29,638 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 20:15:29,641 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 20:15:29,643 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 20:15:29,646 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 20:15:29,646 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 20:15:29,650 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 20:15:29,652 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 20:15:29,654 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 20:15:29,656 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 20:15:29,657 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 20:15:29,660 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 20:15:29,664 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 20:15:29,668 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 20:15:29,673 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 20:15:29,674 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 20:15:29,677 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 20:15:29,680 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 20:15:29,681 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 20:15:29,681 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 20:15:29,683 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 20:15:29,684 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 20:15:29,685 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 20:15:29,685 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 20:15:29,686 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 20:15:29,687 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 20:15:29,688 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 20:15:29,689 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 20:15:29,689 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 20:15:29,691 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 20:15:29,691 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 20:15:29,691 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 20:15:29,692 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 20:15:29,694 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 20:15:29,695 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2019-11-28 20:15:29,722 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 20:15:29,722 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 20:15:29,726 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 20:15:29,727 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 20:15:29,727 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 20:15:29,728 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 20:15:29,728 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 20:15:29,728 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-28 20:15:29,728 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 20:15:29,729 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 20:15:29,729 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 20:15:29,729 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-11-28 20:15:29,729 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-11-28 20:15:29,730 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-11-28 20:15:29,730 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 20:15:29,730 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-28 20:15:29,731 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-28 20:15:29,731 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-28 20:15:29,731 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 20:15:29,731 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 20:15:29,732 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 20:15:29,732 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 20:15:29,732 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 20:15:29,733 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 20:15:29,733 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 20:15:29,733 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 20:15:29,734 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 20:15:29,734 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-28 20:15:29,734 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-28 20:15:29,734 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 20:15:29,735 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-28 20:15:29,735 INFO L138 SettingsManager]: * Logic for external solver=AUFBV Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> afc88cbf4886a453fed887733400308a528b9724 [2019-11-28 20:15:30,077 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 20:15:30,090 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 20:15:30,094 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 20:15:30,096 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 20:15:30,096 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 20:15:30,097 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-properties/list_flag-2.i [2019-11-28 20:15:30,159 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae0ced9fd/48e7be3ad6304f749754c51c1d47a3d5/FLAG9774ca57f [2019-11-28 20:15:30,650 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 20:15:30,651 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-properties/list_flag-2.i [2019-11-28 20:15:30,674 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae0ced9fd/48e7be3ad6304f749754c51c1d47a3d5/FLAG9774ca57f [2019-11-28 20:15:30,968 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae0ced9fd/48e7be3ad6304f749754c51c1d47a3d5 [2019-11-28 20:15:30,971 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 20:15:30,973 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-28 20:15:30,974 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 20:15:30,974 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 20:15:30,978 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 20:15:30,980 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 08:15:30" (1/1) ... [2019-11-28 20:15:30,984 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b7c4448 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:15:30, skipping insertion in model container [2019-11-28 20:15:30,985 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 08:15:30" (1/1) ... [2019-11-28 20:15:30,992 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 20:15:31,055 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 20:15:31,466 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 20:15:31,488 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 20:15:31,587 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 20:15:31,664 INFO L208 MainTranslator]: Completed translation [2019-11-28 20:15:31,665 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:15:31 WrapperNode [2019-11-28 20:15:31,665 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 20:15:31,666 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 20:15:31,667 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 20:15:31,669 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 20:15:31,680 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:15:31" (1/1) ... [2019-11-28 20:15:31,680 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:15:31" (1/1) ... [2019-11-28 20:15:31,700 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:15:31" (1/1) ... [2019-11-28 20:15:31,701 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:15:31" (1/1) ... [2019-11-28 20:15:31,739 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:15:31" (1/1) ... [2019-11-28 20:15:31,748 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:15:31" (1/1) ... [2019-11-28 20:15:31,754 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:15:31" (1/1) ... [2019-11-28 20:15:31,765 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 20:15:31,765 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 20:15:31,766 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 20:15:31,766 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 20:15:31,767 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:15:31" (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 [2019-11-28 20:15:31,820 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-28 20:15:31,820 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 20:15:31,820 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2019-11-28 20:15:31,820 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-11-28 20:15:31,820 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-11-28 20:15:31,821 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2019-11-28 20:15:31,821 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2019-11-28 20:15:31,821 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2019-11-28 20:15:31,821 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-11-28 20:15:31,822 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-28 20:15:31,822 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-28 20:15:31,822 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-28 20:15:31,822 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-11-28 20:15:31,822 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-11-28 20:15:31,822 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-11-28 20:15:31,823 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-11-28 20:15:31,823 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-11-28 20:15:31,823 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-11-28 20:15:31,823 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-11-28 20:15:31,823 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-11-28 20:15:31,824 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-11-28 20:15:31,824 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-11-28 20:15:31,824 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-11-28 20:15:31,824 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-11-28 20:15:31,825 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-11-28 20:15:31,825 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-11-28 20:15:31,825 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-11-28 20:15:31,825 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-11-28 20:15:31,825 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-11-28 20:15:31,826 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-11-28 20:15:31,826 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2019-11-28 20:15:31,826 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2019-11-28 20:15:31,826 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2019-11-28 20:15:31,827 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-11-28 20:15:31,827 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-11-28 20:15:31,827 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-11-28 20:15:31,827 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-11-28 20:15:31,827 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-11-28 20:15:31,828 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-11-28 20:15:31,828 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-11-28 20:15:31,828 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-11-28 20:15:31,828 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-11-28 20:15:31,828 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-11-28 20:15:31,829 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-11-28 20:15:31,829 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-11-28 20:15:31,829 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-11-28 20:15:31,829 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-11-28 20:15:31,829 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-11-28 20:15:31,830 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-11-28 20:15:31,830 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-11-28 20:15:31,830 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-11-28 20:15:31,830 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-11-28 20:15:31,831 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-11-28 20:15:31,831 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-11-28 20:15:31,831 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-11-28 20:15:31,831 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-11-28 20:15:31,831 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-11-28 20:15:31,832 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-11-28 20:15:31,832 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-11-28 20:15:31,832 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-11-28 20:15:31,832 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-11-28 20:15:31,832 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-11-28 20:15:31,833 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-11-28 20:15:31,833 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-11-28 20:15:31,833 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-11-28 20:15:31,833 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-11-28 20:15:31,834 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-11-28 20:15:31,834 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-28 20:15:31,834 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-11-28 20:15:31,834 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-11-28 20:15:31,834 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-28 20:15:31,835 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-11-28 20:15:31,835 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-11-28 20:15:31,835 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-11-28 20:15:31,835 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-11-28 20:15:31,835 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-11-28 20:15:31,836 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-11-28 20:15:31,836 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-11-28 20:15:31,836 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-11-28 20:15:31,836 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-28 20:15:31,837 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-11-28 20:15:31,837 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-11-28 20:15:31,837 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-11-28 20:15:31,837 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-11-28 20:15:31,837 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-11-28 20:15:31,838 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-11-28 20:15:31,838 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-11-28 20:15:31,838 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-11-28 20:15:31,838 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-11-28 20:15:31,839 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-11-28 20:15:31,839 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-11-28 20:15:31,839 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-11-28 20:15:31,839 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-11-28 20:15:31,839 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-11-28 20:15:31,840 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-11-28 20:15:31,840 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-11-28 20:15:31,840 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-11-28 20:15:31,840 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-11-28 20:15:31,840 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-11-28 20:15:31,841 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-11-28 20:15:31,841 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-11-28 20:15:31,841 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-11-28 20:15:31,841 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-11-28 20:15:31,841 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-11-28 20:15:31,841 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-11-28 20:15:31,841 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-11-28 20:15:31,841 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-11-28 20:15:31,842 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-11-28 20:15:31,842 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-11-28 20:15:31,842 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-11-28 20:15:31,842 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-11-28 20:15:31,842 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-11-28 20:15:31,842 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-11-28 20:15:31,842 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-11-28 20:15:31,843 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-11-28 20:15:31,843 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-11-28 20:15:31,843 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-11-28 20:15:31,843 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-11-28 20:15:31,843 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-11-28 20:15:31,844 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-11-28 20:15:31,844 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-28 20:15:31,844 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-28 20:15:31,844 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-11-28 20:15:31,844 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-28 20:15:31,844 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-28 20:15:31,844 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-28 20:15:31,845 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-28 20:15:31,845 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 20:15:31,845 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2019-11-28 20:15:31,845 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-28 20:15:32,221 INFO L691 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-11-28 20:15:32,562 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 20:15:32,562 INFO L287 CfgBuilder]: Removed 3 assume(true) statements. [2019-11-28 20:15:32,564 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:15:32 BoogieIcfgContainer [2019-11-28 20:15:32,564 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 20:15:32,565 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 20:15:32,565 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 20:15:32,568 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 20:15:32,569 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 08:15:30" (1/3) ... [2019-11-28 20:15:32,570 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e015fbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 08:15:32, skipping insertion in model container [2019-11-28 20:15:32,570 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:15:31" (2/3) ... [2019-11-28 20:15:32,570 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e015fbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 08:15:32, skipping insertion in model container [2019-11-28 20:15:32,570 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:15:32" (3/3) ... [2019-11-28 20:15:32,572 INFO L109 eAbstractionObserver]: Analyzing ICFG list_flag-2.i [2019-11-28 20:15:32,582 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 20:15:32,590 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 22 error locations. [2019-11-28 20:15:32,603 INFO L249 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2019-11-28 20:15:32,624 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 20:15:32,625 INFO L374 AbstractCegarLoop]: Hoare is false [2019-11-28 20:15:32,625 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 20:15:32,625 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 20:15:32,625 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 20:15:32,626 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 20:15:32,626 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 20:15:32,626 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 20:15:32,639 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states. [2019-11-28 20:15:32,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-28 20:15:32,649 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:15:32,650 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 20:15:32,651 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr21ENSURES_VIOLATIONMEMORY_LEAK, mainErr20ASSERT_VIOLATIONMEMORY_LEAK, mainErr5REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2019-11-28 20:15:32,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:15:32,656 INFO L82 PathProgramCache]: Analyzing trace with hash -1337200692, now seen corresponding path program 1 times [2019-11-28 20:15:32,668 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-28 20:15:32,669 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2009820206] [2019-11-28 20:15:32,669 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2019-11-28 20:15:32,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:15:32,901 INFO L264 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 1 conjunts are in the unsatisfiable core [2019-11-28 20:15:32,907 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:15:32,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:15:32,927 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-11-28 20:15:32,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:15:32,959 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2009820206] [2019-11-28 20:15:32,959 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-28 20:15:32,960 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-28 20:15:32,962 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71651084] [2019-11-28 20:15:32,968 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-28 20:15:32,968 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-28 20:15:32,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-28 20:15:32,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-28 20:15:32,989 INFO L87 Difference]: Start difference. First operand 61 states. Second operand 2 states. [2019-11-28 20:15:33,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:15:33,021 INFO L93 Difference]: Finished difference Result 61 states and 67 transitions. [2019-11-28 20:15:33,021 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-28 20:15:33,023 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-11-28 20:15:33,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:15:33,035 INFO L225 Difference]: With dead ends: 61 [2019-11-28 20:15:33,035 INFO L226 Difference]: Without dead ends: 54 [2019-11-28 20:15:33,038 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-28 20:15:33,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2019-11-28 20:15:33,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2019-11-28 20:15:33,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2019-11-28 20:15:33,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 58 transitions. [2019-11-28 20:15:33,095 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 58 transitions. Word has length 10 [2019-11-28 20:15:33,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:15:33,096 INFO L462 AbstractCegarLoop]: Abstraction has 54 states and 58 transitions. [2019-11-28 20:15:33,096 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-28 20:15:33,096 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 58 transitions. [2019-11-28 20:15:33,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-28 20:15:33,098 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:15:33,098 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 20:15:33,321 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-11-28 20:15:33,322 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr21ENSURES_VIOLATIONMEMORY_LEAK, mainErr20ASSERT_VIOLATIONMEMORY_LEAK, mainErr5REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2019-11-28 20:15:33,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:15:33,323 INFO L82 PathProgramCache]: Analyzing trace with hash -1337201653, now seen corresponding path program 1 times [2019-11-28 20:15:33,324 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-28 20:15:33,324 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2069001977] [2019-11-28 20:15:33,324 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2019-11-28 20:15:33,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:15:33,447 INFO L264 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 20:15:33,449 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:15:33,516 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-28 20:15:33,517 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-28 20:15:33,522 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-28 20:15:33,523 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-28 20:15:33,523 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-28 20:15:33,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:15:33,544 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-11-28 20:15:33,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:15:33,558 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2069001977] [2019-11-28 20:15:33,559 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-28 20:15:33,559 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-11-28 20:15:33,559 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484894395] [2019-11-28 20:15:33,561 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 20:15:33,561 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-28 20:15:33,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 20:15:33,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-28 20:15:33,562 INFO L87 Difference]: Start difference. First operand 54 states and 58 transitions. Second operand 4 states. [2019-11-28 20:15:33,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:15:33,811 INFO L93 Difference]: Finished difference Result 61 states and 67 transitions. [2019-11-28 20:15:33,813 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 20:15:33,813 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2019-11-28 20:15:33,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:15:33,817 INFO L225 Difference]: With dead ends: 61 [2019-11-28 20:15:33,817 INFO L226 Difference]: Without dead ends: 61 [2019-11-28 20:15:33,818 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-28 20:15:33,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2019-11-28 20:15:33,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 56. [2019-11-28 20:15:33,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2019-11-28 20:15:33,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 67 transitions. [2019-11-28 20:15:33,828 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 67 transitions. Word has length 10 [2019-11-28 20:15:33,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:15:33,829 INFO L462 AbstractCegarLoop]: Abstraction has 56 states and 67 transitions. [2019-11-28 20:15:33,829 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 20:15:33,830 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 67 transitions. [2019-11-28 20:15:33,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-28 20:15:33,831 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:15:33,831 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 20:15:34,043 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-11-28 20:15:34,044 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr21ENSURES_VIOLATIONMEMORY_LEAK, mainErr20ASSERT_VIOLATIONMEMORY_LEAK, mainErr5REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2019-11-28 20:15:34,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:15:34,044 INFO L82 PathProgramCache]: Analyzing trace with hash -1337201652, now seen corresponding path program 1 times [2019-11-28 20:15:34,045 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-28 20:15:34,045 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1931383707] [2019-11-28 20:15:34,045 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2019-11-28 20:15:34,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:15:34,165 INFO L264 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-28 20:15:34,168 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:15:34,187 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-28 20:15:34,187 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-28 20:15:34,214 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-28 20:15:34,215 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-28 20:15:34,216 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-11-28 20:15:34,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:15:34,270 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-11-28 20:15:34,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:15:34,421 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1931383707] [2019-11-28 20:15:34,421 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-28 20:15:34,421 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2019-11-28 20:15:34,421 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868035815] [2019-11-28 20:15:34,424 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-28 20:15:34,424 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-28 20:15:34,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-28 20:15:34,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-28 20:15:34,427 INFO L87 Difference]: Start difference. First operand 56 states and 67 transitions. Second operand 6 states. [2019-11-28 20:15:34,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:15:34,844 INFO L93 Difference]: Finished difference Result 73 states and 80 transitions. [2019-11-28 20:15:34,846 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-28 20:15:34,846 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2019-11-28 20:15:34,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:15:34,847 INFO L225 Difference]: With dead ends: 73 [2019-11-28 20:15:34,848 INFO L226 Difference]: Without dead ends: 73 [2019-11-28 20:15:34,848 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2019-11-28 20:15:34,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2019-11-28 20:15:34,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 63. [2019-11-28 20:15:34,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2019-11-28 20:15:34,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 71 transitions. [2019-11-28 20:15:34,857 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 71 transitions. Word has length 10 [2019-11-28 20:15:34,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:15:34,858 INFO L462 AbstractCegarLoop]: Abstraction has 63 states and 71 transitions. [2019-11-28 20:15:34,858 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-28 20:15:34,858 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 71 transitions. [2019-11-28 20:15:34,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-28 20:15:34,859 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:15:34,859 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 20:15:35,071 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2019-11-28 20:15:35,072 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr21ENSURES_VIOLATIONMEMORY_LEAK, mainErr20ASSERT_VIOLATIONMEMORY_LEAK, mainErr5REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2019-11-28 20:15:35,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:15:35,072 INFO L82 PathProgramCache]: Analyzing trace with hash 2081498834, now seen corresponding path program 1 times [2019-11-28 20:15:35,074 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-28 20:15:35,076 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2014565550] [2019-11-28 20:15:35,076 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2019-11-28 20:15:35,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:15:35,197 INFO L264 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-28 20:15:35,199 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 20:15:35,226 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2019-11-28 20:15:35,227 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-28 20:15:35,229 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-28 20:15:35,230 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-28 20:15:35,230 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:7 [2019-11-28 20:15:35,257 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2019-11-28 20:15:35,259 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-28 20:15:35,261 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-28 20:15:35,262 INFO L534 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-28 20:15:35,262 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:17, output treesize:3 [2019-11-28 20:15:35,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:15:35,271 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-11-28 20:15:35,285 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2019-11-28 20:15:35,286 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2019-11-28 20:15:35,293 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-28 20:15:35,293 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2019-11-28 20:15:35,294 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:15, output treesize:7 [2019-11-28 20:15:35,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:15:35,300 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2014565550] [2019-11-28 20:15:35,300 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-28 20:15:35,300 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2019-11-28 20:15:35,301 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483052323] [2019-11-28 20:15:35,301 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-28 20:15:35,301 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-28 20:15:35,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-28 20:15:35,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-28 20:15:35,302 INFO L87 Difference]: Start difference. First operand 63 states and 71 transitions. Second operand 6 states. [2019-11-28 20:15:35,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:15:35,700 INFO L93 Difference]: Finished difference Result 106 states and 116 transitions. [2019-11-28 20:15:35,701 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-28 20:15:35,701 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2019-11-28 20:15:35,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:15:35,703 INFO L225 Difference]: With dead ends: 106 [2019-11-28 20:15:35,703 INFO L226 Difference]: Without dead ends: 106 [2019-11-28 20:15:35,704 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2019-11-28 20:15:35,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2019-11-28 20:15:35,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 71. [2019-11-28 20:15:35,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2019-11-28 20:15:35,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 82 transitions. [2019-11-28 20:15:35,713 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 82 transitions. Word has length 17 [2019-11-28 20:15:35,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:15:35,713 INFO L462 AbstractCegarLoop]: Abstraction has 71 states and 82 transitions. [2019-11-28 20:15:35,714 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-28 20:15:35,714 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 82 transitions. [2019-11-28 20:15:35,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-28 20:15:35,714 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:15:35,715 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 20:15:35,915 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2019-11-28 20:15:35,916 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr21ENSURES_VIOLATIONMEMORY_LEAK, mainErr20ASSERT_VIOLATIONMEMORY_LEAK, mainErr5REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2019-11-28 20:15:35,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:15:35,917 INFO L82 PathProgramCache]: Analyzing trace with hash 2081498995, now seen corresponding path program 1 times [2019-11-28 20:15:35,918 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-28 20:15:35,918 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1117317188] [2019-11-28 20:15:35,919 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2019-11-28 20:15:36,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:15:36,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:15:36,072 INFO L174 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2019-11-28 20:15:36,072 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-28 20:15:36,273 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2019-11-28 20:15:36,303 WARN L417 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2019-11-28 20:15:36,319 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 08:15:36 BoogieIcfgContainer [2019-11-28 20:15:36,319 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 20:15:36,320 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 20:15:36,320 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 20:15:36,320 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 20:15:36,321 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:15:32" (3/4) ... [2019-11-28 20:15:36,325 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-28 20:15:36,325 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 20:15:36,327 INFO L168 Benchmark]: Toolchain (without parser) took 5354.82 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 199.8 MB). Free memory was 957.7 MB in the beginning and 1.2 GB in the end (delta: -228.5 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 20:15:36,328 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 20:15:36,329 INFO L168 Benchmark]: CACSL2BoogieTranslator took 692.21 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 127.4 MB). Free memory was 952.3 MB in the beginning and 1.1 GB in the end (delta: -149.7 MB). Peak memory consumption was 20.4 MB. Max. memory is 11.5 GB. [2019-11-28 20:15:36,330 INFO L168 Benchmark]: Boogie Preprocessor took 98.61 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 20:15:36,331 INFO L168 Benchmark]: RCFGBuilder took 798.48 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: 51.4 MB). Peak memory consumption was 51.4 MB. Max. memory is 11.5 GB. [2019-11-28 20:15:36,331 INFO L168 Benchmark]: TraceAbstraction took 3754.43 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 72.4 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -139.7 MB). Peak memory consumption was 260.1 MB. Max. memory is 11.5 GB. [2019-11-28 20:15:36,332 INFO L168 Benchmark]: Witness Printer took 5.92 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 11.5 GB. [2019-11-28 20:15:36,336 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 692.21 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 127.4 MB). Free memory was 952.3 MB in the beginning and 1.1 GB in the end (delta: -149.7 MB). Peak memory consumption was 20.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 98.61 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 798.48 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: 51.4 MB). Peak memory consumption was 51.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3754.43 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 72.4 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -139.7 MB). Peak memory consumption was 260.1 MB. Max. memory is 11.5 GB. * Witness Printer took 5.92 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 520]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 520. Possible FailurePath: [L521] int flag = __VERIFIER_nondet_int(); [L522] List p, a, t; [L523] a = (List) malloc(sizeof(struct node)) VAL [a={1:0}, flag=2147483648, malloc(sizeof(struct node))={1:0}] [L524] COND FALSE !(a == 0) VAL [a={1:0}, flag=2147483648, malloc(sizeof(struct node))={1:0}] [L525] p = a VAL [a={1:0}, flag=2147483648, malloc(sizeof(struct node))={1:0}, p={1:0}] [L526] COND FALSE !(__VERIFIER_nondet_int()) [L537] p->h = 3 VAL [a={1:0}, flag=2147483648, malloc(sizeof(struct node))={1:0}, p={1:0}] [L538] p = a VAL [a={1:0}, flag=2147483648, malloc(sizeof(struct node))={1:0}, p={1:0}] [L539] COND TRUE \read(flag) VAL [a={1:0}, flag=2147483648, malloc(sizeof(struct node))={1:0}, p={1:0}] [L540] EXPR p->h VAL [a={1:0}, flag=2147483648, malloc(sizeof(struct node))={1:0}, p={1:0}, p->h=3] [L540] COND FALSE !(p->h == 1) [L545] EXPR p->h VAL [a={1:0}, flag=2147483648, malloc(sizeof(struct node))={1:0}, p={1:0}, p->h=3] [L545] COND FALSE !(p->h != 3) - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 83 locations, 22 error locations. Result: UNSAFE, OverallTime: 3.6s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 161 SDtfs, 303 SDslu, 167 SDs, 0 SdLazy, 204 SolverSat, 51 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 95 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=71occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 50 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 64 NumberOfCodeBlocks, 64 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 86 ConstructedInterpolants, 0 QuantifiedInterpolants, 3770 SizeOfPredicates, 16 NumberOfNonLiveVariables, 194 ConjunctsInSsa, 19 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...