./Ultimate.py --spec /storage/repos/svcomp/c/properties/valid-memsafety.prp --file /storage/repos/svcomp/c/list-properties/simple_true-unreach-call_false-valid-memtrack.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 91b1670e Calling Ultimate with: 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 /storage/repos/svcomp/c/list-properties/simple_true-unreach-call_false-valid-memtrack.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 62ed6df4fdaf468f52c0eff1159abadc4f432e3d ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: 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 /storage/repos/svcomp/c/list-properties/simple_true-unreach-call_false-valid-memtrack.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 62ed6df4fdaf468f52c0eff1159abadc4f432e3d ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample --- Real Ultimate output --- This is Ultimate 0.1.24-91b1670 [2018-11-28 22:54:39,578 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 22:54:39,580 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 22:54:39,593 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 22:54:39,593 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 22:54:39,595 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 22:54:39,596 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 22:54:39,598 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 22:54:39,601 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 22:54:39,608 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 22:54:39,612 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 22:54:39,612 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 22:54:39,613 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 22:54:39,614 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 22:54:39,615 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 22:54:39,616 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 22:54:39,620 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 22:54:39,624 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 22:54:39,628 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 22:54:39,630 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 22:54:39,630 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 22:54:39,632 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 22:54:39,634 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 22:54:39,634 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 22:54:39,634 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 22:54:39,635 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 22:54:39,636 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 22:54:39,637 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 22:54:39,638 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 22:54:39,639 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 22:54:39,639 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 22:54:39,640 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 22:54:39,640 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 22:54:39,641 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 22:54:39,642 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 22:54:39,643 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 22:54:39,643 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2018-11-28 22:54:39,667 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 22:54:39,668 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 22:54:39,669 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-28 22:54:39,669 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-28 22:54:39,670 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 22:54:39,670 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 22:54:39,670 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 22:54:39,670 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 22:54:39,674 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-28 22:54:39,675 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-28 22:54:39,675 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 22:54:39,675 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-28 22:54:39,675 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 22:54:39,675 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-11-28 22:54:39,676 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-11-28 22:54:39,677 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-11-28 22:54:39,677 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-28 22:54:39,677 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-28 22:54:39,677 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 22:54:39,677 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 22:54:39,678 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 22:54:39,680 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-28 22:54:39,680 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-28 22:54:39,680 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 22:54:39,680 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 22:54:39,681 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-28 22:54:39,681 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-28 22:54:39,681 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-28 22:54:39,682 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in 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 -> 62ed6df4fdaf468f52c0eff1159abadc4f432e3d [2018-11-28 22:54:39,722 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 22:54:39,735 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 22:54:39,739 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 22:54:39,741 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 22:54:39,741 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 22:54:39,742 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/list-properties/simple_true-unreach-call_false-valid-memtrack.i [2018-11-28 22:54:39,811 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/354712419/521a88b8ab244f1d8467a2143a3e2def/FLAG6074e33af [2018-11-28 22:54:40,292 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 22:54:40,295 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/list-properties/simple_true-unreach-call_false-valid-memtrack.i [2018-11-28 22:54:40,324 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/354712419/521a88b8ab244f1d8467a2143a3e2def/FLAG6074e33af [2018-11-28 22:54:40,626 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/354712419/521a88b8ab244f1d8467a2143a3e2def [2018-11-28 22:54:40,630 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 22:54:40,631 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-28 22:54:40,632 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 22:54:40,632 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 22:54:40,636 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 22:54:40,637 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 10:54:40" (1/1) ... [2018-11-28 22:54:40,640 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27498764 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:54:40, skipping insertion in model container [2018-11-28 22:54:40,641 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 10:54:40" (1/1) ... [2018-11-28 22:54:40,649 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 22:54:40,703 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 22:54:41,140 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 22:54:41,153 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 22:54:41,303 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 22:54:41,370 INFO L195 MainTranslator]: Completed translation [2018-11-28 22:54:41,370 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:54:41 WrapperNode [2018-11-28 22:54:41,371 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 22:54:41,372 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 22:54:41,372 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 22:54:41,372 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 22:54:41,388 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:54:41" (1/1) ... [2018-11-28 22:54:41,388 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:54:41" (1/1) ... [2018-11-28 22:54:41,419 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:54:41" (1/1) ... [2018-11-28 22:54:41,420 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:54:41" (1/1) ... [2018-11-28 22:54:41,446 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:54:41" (1/1) ... [2018-11-28 22:54:41,456 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:54:41" (1/1) ... [2018-11-28 22:54:41,461 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:54:41" (1/1) ... [2018-11-28 22:54:41,475 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 22:54:41,476 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 22:54:41,476 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 22:54:41,476 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 22:54:41,477 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:54:41" (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 [2018-11-28 22:54:41,537 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-28 22:54:41,537 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 22:54:41,538 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2018-11-28 22:54:41,538 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-28 22:54:41,538 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-28 22:54:41,538 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-11-28 22:54:41,538 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2018-11-28 22:54:41,538 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2018-11-28 22:54:41,539 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2018-11-28 22:54:41,539 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2018-11-28 22:54:41,539 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2018-11-28 22:54:41,539 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2018-11-28 22:54:41,540 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2018-11-28 22:54:41,540 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2018-11-28 22:54:41,540 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2018-11-28 22:54:41,540 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2018-11-28 22:54:41,540 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2018-11-28 22:54:41,540 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2018-11-28 22:54:41,541 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2018-11-28 22:54:41,541 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2018-11-28 22:54:41,541 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2018-11-28 22:54:41,541 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2018-11-28 22:54:41,541 INFO L130 BoogieDeclarations]: Found specification of procedure select [2018-11-28 22:54:41,541 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2018-11-28 22:54:41,541 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2018-11-28 22:54:41,542 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2018-11-28 22:54:41,542 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2018-11-28 22:54:41,542 INFO L130 BoogieDeclarations]: Found specification of procedure random [2018-11-28 22:54:41,542 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2018-11-28 22:54:41,542 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2018-11-28 22:54:41,542 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2018-11-28 22:54:41,543 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2018-11-28 22:54:41,543 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2018-11-28 22:54:41,543 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2018-11-28 22:54:41,543 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2018-11-28 22:54:41,543 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2018-11-28 22:54:41,543 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2018-11-28 22:54:41,543 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2018-11-28 22:54:41,544 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2018-11-28 22:54:41,544 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2018-11-28 22:54:41,544 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2018-11-28 22:54:41,544 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2018-11-28 22:54:41,544 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2018-11-28 22:54:41,544 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2018-11-28 22:54:41,544 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2018-11-28 22:54:41,545 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2018-11-28 22:54:41,545 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2018-11-28 22:54:41,545 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2018-11-28 22:54:41,545 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2018-11-28 22:54:41,545 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2018-11-28 22:54:41,545 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2018-11-28 22:54:41,546 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2018-11-28 22:54:41,546 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2018-11-28 22:54:41,546 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2018-11-28 22:54:41,546 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2018-11-28 22:54:41,546 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2018-11-28 22:54:41,546 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2018-11-28 22:54:41,546 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2018-11-28 22:54:41,547 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2018-11-28 22:54:41,547 INFO L130 BoogieDeclarations]: Found specification of procedure free [2018-11-28 22:54:41,547 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2018-11-28 22:54:41,547 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2018-11-28 22:54:41,547 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2018-11-28 22:54:41,547 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2018-11-28 22:54:41,547 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2018-11-28 22:54:41,547 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2018-11-28 22:54:41,548 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2018-11-28 22:54:41,548 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-28 22:54:41,548 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2018-11-28 22:54:41,548 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2018-11-28 22:54:41,548 INFO L130 BoogieDeclarations]: Found specification of procedure __secure_getenv [2018-11-28 22:54:41,548 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2018-11-28 22:54:41,548 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2018-11-28 22:54:41,549 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2018-11-28 22:54:41,549 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2018-11-28 22:54:41,549 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2018-11-28 22:54:41,549 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2018-11-28 22:54:41,549 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2018-11-28 22:54:41,549 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2018-11-28 22:54:41,549 INFO L130 BoogieDeclarations]: Found specification of procedure system [2018-11-28 22:54:41,549 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2018-11-28 22:54:41,550 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2018-11-28 22:54:41,550 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2018-11-28 22:54:41,550 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2018-11-28 22:54:41,550 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2018-11-28 22:54:41,550 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2018-11-28 22:54:41,550 INFO L130 BoogieDeclarations]: Found specification of procedure div [2018-11-28 22:54:41,550 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2018-11-28 22:54:41,550 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2018-11-28 22:54:41,551 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2018-11-28 22:54:41,551 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2018-11-28 22:54:41,551 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2018-11-28 22:54:41,551 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2018-11-28 22:54:41,551 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2018-11-28 22:54:41,551 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2018-11-28 22:54:41,551 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2018-11-28 22:54:41,551 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2018-11-28 22:54:41,552 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2018-11-28 22:54:41,552 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2018-11-28 22:54:41,552 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2018-11-28 22:54:41,552 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2018-11-28 22:54:41,552 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2018-11-28 22:54:41,552 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2018-11-28 22:54:41,552 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2018-11-28 22:54:41,553 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2018-11-28 22:54:41,553 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2018-11-28 22:54:41,553 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2018-11-28 22:54:41,553 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2018-11-28 22:54:41,553 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-28 22:54:41,553 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-28 22:54:41,553 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-28 22:54:41,553 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-11-28 22:54:41,554 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-11-28 22:54:41,554 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-28 22:54:41,554 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-28 22:54:41,554 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 22:54:41,554 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-28 22:54:42,288 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 22:54:42,289 INFO L280 CfgBuilder]: Removed 2 assue(true) statements. [2018-11-28 22:54:42,289 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 10:54:42 BoogieIcfgContainer [2018-11-28 22:54:42,289 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 22:54:42,290 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-28 22:54:42,290 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-28 22:54:42,294 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-28 22:54:42,294 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 10:54:40" (1/3) ... [2018-11-28 22:54:42,295 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23a8f69f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 10:54:42, skipping insertion in model container [2018-11-28 22:54:42,295 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:54:41" (2/3) ... [2018-11-28 22:54:42,295 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23a8f69f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 10:54:42, skipping insertion in model container [2018-11-28 22:54:42,296 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 10:54:42" (3/3) ... [2018-11-28 22:54:42,297 INFO L112 eAbstractionObserver]: Analyzing ICFG simple_true-unreach-call_false-valid-memtrack.i [2018-11-28 22:54:42,307 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-28 22:54:42,314 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 15 error locations. [2018-11-28 22:54:42,329 INFO L257 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2018-11-28 22:54:42,356 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 22:54:42,357 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-28 22:54:42,357 INFO L383 AbstractCegarLoop]: Hoare is false [2018-11-28 22:54:42,357 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-28 22:54:42,359 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 22:54:42,359 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 22:54:42,359 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-28 22:54:42,359 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 22:54:42,360 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-28 22:54:42,380 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states. [2018-11-28 22:54:42,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-28 22:54:42,390 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 22:54:42,391 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 22:54:42,395 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr4REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr14ENSURES_VIOLATIONMEMORY_LEAK, mainErr9REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION]=== [2018-11-28 22:54:42,403 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 22:54:42,403 INFO L82 PathProgramCache]: Analyzing trace with hash 1635117424, now seen corresponding path program 1 times [2018-11-28 22:54:42,406 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 22:54:42,407 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 22:54:42,457 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 22:54:42,458 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 22:54:42,458 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 22:54:42,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 22:54:42,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 22:54:42,570 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 22:54:42,571 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-28 22:54:42,575 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-28 22:54:42,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-28 22:54:42,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-28 22:54:42,595 INFO L87 Difference]: Start difference. First operand 49 states. Second operand 2 states. [2018-11-28 22:54:42,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 22:54:42,618 INFO L93 Difference]: Finished difference Result 49 states and 52 transitions. [2018-11-28 22:54:42,618 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-28 22:54:42,620 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2018-11-28 22:54:42,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 22:54:42,629 INFO L225 Difference]: With dead ends: 49 [2018-11-28 22:54:42,629 INFO L226 Difference]: Without dead ends: 41 [2018-11-28 22:54:42,632 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-28 22:54:42,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-11-28 22:54:42,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-11-28 22:54:42,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-11-28 22:54:42,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 42 transitions. [2018-11-28 22:54:42,671 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 42 transitions. Word has length 10 [2018-11-28 22:54:42,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 22:54:42,671 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 42 transitions. [2018-11-28 22:54:42,672 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-28 22:54:42,672 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 42 transitions. [2018-11-28 22:54:42,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-28 22:54:42,672 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 22:54:42,673 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 22:54:42,673 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr4REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr14ENSURES_VIOLATIONMEMORY_LEAK, mainErr9REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION]=== [2018-11-28 22:54:42,673 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 22:54:42,673 INFO L82 PathProgramCache]: Analyzing trace with hash -850992160, now seen corresponding path program 1 times [2018-11-28 22:54:42,673 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 22:54:42,674 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 22:54:42,675 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 22:54:42,675 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 22:54:42,675 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 22:54:42,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 22:54:42,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 22:54:42,783 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 22:54:42,784 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-28 22:54:42,785 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 22:54:42,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 22:54:42,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 22:54:42,787 INFO L87 Difference]: Start difference. First operand 41 states and 42 transitions. Second operand 4 states. [2018-11-28 22:54:43,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 22:54:43,111 INFO L93 Difference]: Finished difference Result 49 states and 51 transitions. [2018-11-28 22:54:43,111 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 22:54:43,111 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2018-11-28 22:54:43,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 22:54:43,113 INFO L225 Difference]: With dead ends: 49 [2018-11-28 22:54:43,113 INFO L226 Difference]: Without dead ends: 49 [2018-11-28 22:54:43,114 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-28 22:54:43,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-11-28 22:54:43,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 43. [2018-11-28 22:54:43,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-11-28 22:54:43,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 49 transitions. [2018-11-28 22:54:43,121 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 49 transitions. Word has length 11 [2018-11-28 22:54:43,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 22:54:43,122 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 49 transitions. [2018-11-28 22:54:43,122 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 22:54:43,122 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 49 transitions. [2018-11-28 22:54:43,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-28 22:54:43,123 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 22:54:43,123 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 22:54:43,123 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr4REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr14ENSURES_VIOLATIONMEMORY_LEAK, mainErr9REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION]=== [2018-11-28 22:54:43,123 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 22:54:43,123 INFO L82 PathProgramCache]: Analyzing trace with hash -850992159, now seen corresponding path program 1 times [2018-11-28 22:54:43,124 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 22:54:43,124 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 22:54:43,125 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 22:54:43,125 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 22:54:43,125 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 22:54:43,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 22:54:43,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 22:54:43,242 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 22:54:43,242 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-28 22:54:43,242 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 22:54:43,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 22:54:43,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 22:54:43,244 INFO L87 Difference]: Start difference. First operand 43 states and 49 transitions. Second operand 4 states. [2018-11-28 22:54:43,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 22:54:43,466 INFO L93 Difference]: Finished difference Result 56 states and 58 transitions. [2018-11-28 22:54:43,466 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 22:54:43,467 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2018-11-28 22:54:43,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 22:54:43,469 INFO L225 Difference]: With dead ends: 56 [2018-11-28 22:54:43,469 INFO L226 Difference]: Without dead ends: 56 [2018-11-28 22:54:43,470 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-28 22:54:43,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2018-11-28 22:54:43,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 50. [2018-11-28 22:54:43,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2018-11-28 22:54:43,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 53 transitions. [2018-11-28 22:54:43,477 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 53 transitions. Word has length 11 [2018-11-28 22:54:43,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 22:54:43,477 INFO L480 AbstractCegarLoop]: Abstraction has 50 states and 53 transitions. [2018-11-28 22:54:43,477 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 22:54:43,477 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 53 transitions. [2018-11-28 22:54:43,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-11-28 22:54:43,478 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 22:54:43,478 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 22:54:43,479 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr4REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr14ENSURES_VIOLATIONMEMORY_LEAK, mainErr9REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION]=== [2018-11-28 22:54:43,479 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 22:54:43,479 INFO L82 PathProgramCache]: Analyzing trace with hash 1777420732, now seen corresponding path program 1 times [2018-11-28 22:54:43,479 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 22:54:43,479 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 22:54:43,480 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 22:54:43,480 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 22:54:43,481 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 22:54:43,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 22:54:43,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 22:54:43,658 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 22:54:43,659 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 22:54:43,659 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 22:54:43,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 22:54:43,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 22:54:43,660 INFO L87 Difference]: Start difference. First operand 50 states and 53 transitions. Second operand 4 states. [2018-11-28 22:54:43,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 22:54:43,958 INFO L93 Difference]: Finished difference Result 53 states and 55 transitions. [2018-11-28 22:54:43,959 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 22:54:43,959 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2018-11-28 22:54:43,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 22:54:43,960 INFO L225 Difference]: With dead ends: 53 [2018-11-28 22:54:43,960 INFO L226 Difference]: Without dead ends: 53 [2018-11-28 22:54:43,961 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-28 22:54:43,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-11-28 22:54:43,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 50. [2018-11-28 22:54:43,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2018-11-28 22:54:43,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 52 transitions. [2018-11-28 22:54:43,969 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 52 transitions. Word has length 16 [2018-11-28 22:54:43,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 22:54:43,969 INFO L480 AbstractCegarLoop]: Abstraction has 50 states and 52 transitions. [2018-11-28 22:54:43,969 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 22:54:43,970 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 52 transitions. [2018-11-28 22:54:43,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-11-28 22:54:43,970 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 22:54:43,971 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 22:54:43,971 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr4REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr14ENSURES_VIOLATIONMEMORY_LEAK, mainErr9REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION]=== [2018-11-28 22:54:43,971 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 22:54:43,971 INFO L82 PathProgramCache]: Analyzing trace with hash -38969261, now seen corresponding path program 1 times [2018-11-28 22:54:43,971 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 22:54:43,972 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 22:54:43,972 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 22:54:43,973 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 22:54:43,973 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 22:54:43,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 22:54:44,076 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 22:54:44,077 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 22:54:44,077 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-28 22:54:44,078 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-28 22:54:44,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-28 22:54:44,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-11-28 22:54:44,079 INFO L87 Difference]: Start difference. First operand 50 states and 52 transitions. Second operand 6 states. [2018-11-28 22:54:44,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 22:54:44,378 INFO L93 Difference]: Finished difference Result 64 states and 66 transitions. [2018-11-28 22:54:44,379 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-28 22:54:44,379 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2018-11-28 22:54:44,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 22:54:44,381 INFO L225 Difference]: With dead ends: 64 [2018-11-28 22:54:44,381 INFO L226 Difference]: Without dead ends: 64 [2018-11-28 22:54:44,382 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-28 22:54:44,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2018-11-28 22:54:44,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 48. [2018-11-28 22:54:44,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-11-28 22:54:44,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 50 transitions. [2018-11-28 22:54:44,388 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 50 transitions. Word has length 19 [2018-11-28 22:54:44,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 22:54:44,388 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 50 transitions. [2018-11-28 22:54:44,388 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-28 22:54:44,388 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 50 transitions. [2018-11-28 22:54:44,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-11-28 22:54:44,389 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 22:54:44,389 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 22:54:44,390 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr4REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr14ENSURES_VIOLATIONMEMORY_LEAK, mainErr9REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION]=== [2018-11-28 22:54:44,390 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 22:54:44,390 INFO L82 PathProgramCache]: Analyzing trace with hash -38969260, now seen corresponding path program 1 times [2018-11-28 22:54:44,390 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 22:54:44,390 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 22:54:44,391 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 22:54:44,392 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 22:54:44,392 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 22:54:44,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 22:54:44,543 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 22:54:44,544 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 22:54:44,544 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-28 22:54:44,544 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-28 22:54:44,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-28 22:54:44,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-11-28 22:54:44,546 INFO L87 Difference]: Start difference. First operand 48 states and 50 transitions. Second operand 6 states. [2018-11-28 22:54:44,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 22:54:44,890 INFO L93 Difference]: Finished difference Result 60 states and 62 transitions. [2018-11-28 22:54:44,891 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-28 22:54:44,891 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2018-11-28 22:54:44,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 22:54:44,893 INFO L225 Difference]: With dead ends: 60 [2018-11-28 22:54:44,893 INFO L226 Difference]: Without dead ends: 60 [2018-11-28 22:54:44,893 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2018-11-28 22:54:44,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2018-11-28 22:54:44,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 34. [2018-11-28 22:54:44,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-11-28 22:54:44,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 35 transitions. [2018-11-28 22:54:44,899 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 35 transitions. Word has length 19 [2018-11-28 22:54:44,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 22:54:44,900 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 35 transitions. [2018-11-28 22:54:44,900 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-28 22:54:44,900 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 35 transitions. [2018-11-28 22:54:44,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-11-28 22:54:44,901 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 22:54:44,901 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 22:54:44,901 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr4REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr14ENSURES_VIOLATIONMEMORY_LEAK, mainErr9REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION]=== [2018-11-28 22:54:44,901 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 22:54:44,901 INFO L82 PathProgramCache]: Analyzing trace with hash 1662718154, now seen corresponding path program 1 times [2018-11-28 22:54:44,902 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 22:54:44,902 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 22:54:44,903 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 22:54:44,903 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 22:54:44,903 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 22:54:44,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 22:54:45,105 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 22:54:45,106 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 22:54:45,106 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 22:54:45,126 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 22:54:45,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 22:54:45,183 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 22:54:45,324 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 11 treesize of output 8 [2018-11-28 22:54:45,326 INFO L478 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 8 treesize of output 7 [2018-11-28 22:54:45,327 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-28 22:54:45,331 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-28 22:54:45,354 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 11 treesize of output 8 [2018-11-28 22:54:45,358 INFO L478 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 8 treesize of output 7 [2018-11-28 22:54:45,358 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-28 22:54:45,360 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-28 22:54:45,369 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-28 22:54:45,369 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 2 variables, input treesize:26, output treesize:18 [2018-11-28 22:54:45,483 INFO L478 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 15 treesize of output 11 [2018-11-28 22:54:45,486 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 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 3 [2018-11-28 22:54:45,487 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-28 22:54:45,501 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-28 22:54:45,514 INFO L478 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 15 treesize of output 11 [2018-11-28 22:54:45,517 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 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 3 [2018-11-28 22:54:45,518 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-28 22:54:45,522 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-28 22:54:45,530 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-28 22:54:45,530 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 3 variables, input treesize:29, output treesize:7 [2018-11-28 22:54:45,677 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 22:54:45,707 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 22:54:45,707 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10] total 11 [2018-11-28 22:54:45,708 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-28 22:54:45,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-28 22:54:45,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-11-28 22:54:45,708 INFO L87 Difference]: Start difference. First operand 34 states and 35 transitions. Second operand 11 states. [2018-11-28 22:54:45,983 WARN L180 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 23 [2018-11-28 22:54:46,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 22:54:46,489 INFO L93 Difference]: Finished difference Result 55 states and 56 transitions. [2018-11-28 22:54:46,491 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-28 22:54:46,491 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 20 [2018-11-28 22:54:46,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 22:54:46,492 INFO L225 Difference]: With dead ends: 55 [2018-11-28 22:54:46,493 INFO L226 Difference]: Without dead ends: 55 [2018-11-28 22:54:46,493 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 13 SyntacticMatches, 6 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2018-11-28 22:54:46,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-11-28 22:54:46,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 45. [2018-11-28 22:54:46,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-11-28 22:54:46,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 47 transitions. [2018-11-28 22:54:46,498 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 47 transitions. Word has length 20 [2018-11-28 22:54:46,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 22:54:46,498 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 47 transitions. [2018-11-28 22:54:46,499 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-28 22:54:46,499 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 47 transitions. [2018-11-28 22:54:46,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-11-28 22:54:46,499 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 22:54:46,499 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 22:54:46,502 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr4REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr14ENSURES_VIOLATIONMEMORY_LEAK, mainErr9REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION]=== [2018-11-28 22:54:46,502 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 22:54:46,502 INFO L82 PathProgramCache]: Analyzing trace with hash 4653910, now seen corresponding path program 1 times [2018-11-28 22:54:46,502 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 22:54:46,503 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 22:54:46,504 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 22:54:46,504 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 22:54:46,504 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 22:54:46,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 22:54:46,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 22:54:46,558 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-11-28 22:54:46,576 WARN L416 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-11-28 22:54:46,591 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 10:54:46 BoogieIcfgContainer [2018-11-28 22:54:46,591 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-28 22:54:46,593 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 22:54:46,593 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 22:54:46,593 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 22:54:46,594 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 10:54:42" (3/4) ... [2018-11-28 22:54:46,599 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-28 22:54:46,599 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 22:54:46,600 INFO L168 Benchmark]: Toolchain (without parser) took 5969.78 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 163.1 MB). Free memory was 952.7 MB in the beginning and 879.5 MB in the end (delta: 73.2 MB). Peak memory consumption was 236.2 MB. Max. memory is 11.5 GB. [2018-11-28 22:54:46,601 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 22:54:46,602 INFO L168 Benchmark]: CACSL2BoogieTranslator took 739.50 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 163.1 MB). Free memory was 947.3 MB in the beginning and 1.1 GB in the end (delta: -195.3 MB). Peak memory consumption was 30.5 MB. Max. memory is 11.5 GB. [2018-11-28 22:54:46,603 INFO L168 Benchmark]: Boogie Preprocessor took 103.56 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. [2018-11-28 22:54:46,603 INFO L168 Benchmark]: RCFGBuilder took 813.53 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: 45.9 MB). Peak memory consumption was 45.9 MB. Max. memory is 11.5 GB. [2018-11-28 22:54:46,604 INFO L168 Benchmark]: TraceAbstraction took 4301.16 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 879.5 MB in the end (delta: 217.2 MB). Peak memory consumption was 217.2 MB. Max. memory is 11.5 GB. [2018-11-28 22:54:46,605 INFO L168 Benchmark]: Witness Printer took 6.17 ms. Allocated memory is still 1.2 GB. Free memory is still 879.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 22:54:46,608 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 739.50 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 163.1 MB). Free memory was 947.3 MB in the beginning and 1.1 GB in the end (delta: -195.3 MB). Peak memory consumption was 30.5 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 103.56 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 813.53 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: 45.9 MB). Peak memory consumption was 45.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 4301.16 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 879.5 MB in the end (delta: 217.2 MB). Peak memory consumption was 217.2 MB. Max. memory is 11.5 GB. * Witness Printer took 6.17 ms. Allocated memory is still 1.2 GB. Free memory is still 879.5 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: 626]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 626. Possible FailurePath: [L627] List a = (List) malloc(sizeof(struct node)); VAL [a={13:0}, malloc(sizeof(struct node))={13:0}] [L628] COND FALSE !(a == 0) VAL [a={13:0}, malloc(sizeof(struct node))={13:0}] [L629] List t; [L630] List p = a; VAL [a={13:0}, malloc(sizeof(struct node))={13:0}, p={13:0}] [L631] COND FALSE !(__VERIFIER_nondet_int()) [L638] p->h = 1 VAL [a={13:0}, malloc(sizeof(struct node))={13:0}, p={13:0}] [L639] p->n = 0 VAL [a={13:0}, malloc(sizeof(struct node))={13:0}, p={13:0}] [L640] p = a VAL [a={13:0}, malloc(sizeof(struct node))={13:0}, p={13:0}] [L641] COND TRUE p!=0 VAL [a={13:0}, malloc(sizeof(struct node))={13:0}, p={13:0}] [L642] EXPR p->h VAL [a={13:0}, malloc(sizeof(struct node))={13:0}, p={13:0}, p->h=1] [L642] COND FALSE !(p->h != 1) [L645] EXPR p->n VAL [a={13:0}, malloc(sizeof(struct node))={13:0}, p={13:0}, p->n={0:0}] [L645] p = p->n [L641] COND FALSE !(p!=0) VAL [a={13:0}, malloc(sizeof(struct node))={13:0}, p={0:0}] [L647] return 0; VAL [\result=0, a={13:0}, malloc(sizeof(struct node))={13:0}, p={0:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 51 locations, 15 error locations. UNSAFE Result, 4.2s OverallTime, 8 OverallIterations, 2 TraceHistogramMax, 2.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 200 SDtfs, 385 SDslu, 278 SDs, 0 SdLazy, 442 SolverSat, 51 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 67 GetRequests, 23 SyntacticMatches, 6 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=50occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 67 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 147 NumberOfCodeBlocks, 147 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 118 ConstructedInterpolants, 0 QuantifiedInterpolants, 10638 SizeOfPredicates, 11 NumberOfNonLiveVariables, 92 ConjunctsInSsa, 21 ConjunctsInUnsatCore, 8 InterpolantComputations, 6 PerfectInterpolantSequences, 6/8 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: 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 0.1.24-91b1670 [2018-11-28 22:54:48,872 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 22:54:48,874 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 22:54:48,889 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 22:54:48,889 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 22:54:48,890 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 22:54:48,892 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 22:54:48,894 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 22:54:48,895 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 22:54:48,896 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 22:54:48,898 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 22:54:48,898 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 22:54:48,899 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 22:54:48,900 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 22:54:48,902 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 22:54:48,902 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 22:54:48,903 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 22:54:48,905 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 22:54:48,907 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 22:54:48,909 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 22:54:48,910 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 22:54:48,912 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 22:54:48,914 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 22:54:48,915 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 22:54:48,915 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 22:54:48,916 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 22:54:48,917 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 22:54:48,918 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 22:54:48,919 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 22:54:48,920 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 22:54:48,921 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 22:54:48,921 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 22:54:48,922 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 22:54:48,922 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 22:54:48,923 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 22:54:48,924 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 22:54:48,925 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2018-11-28 22:54:48,947 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 22:54:48,948 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 22:54:48,949 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-28 22:54:48,950 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-28 22:54:48,950 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 22:54:48,951 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 22:54:48,951 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 22:54:48,951 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 22:54:48,951 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-28 22:54:48,951 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-28 22:54:48,952 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 22:54:48,953 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-28 22:54:48,953 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 22:54:48,953 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-11-28 22:54:48,953 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-11-28 22:54:48,953 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-11-28 22:54:48,954 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-28 22:54:48,954 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-11-28 22:54:48,954 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-11-28 22:54:48,954 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-28 22:54:48,954 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 22:54:48,955 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 22:54:48,957 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 22:54:48,957 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-28 22:54:48,957 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-28 22:54:48,957 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 22:54:48,958 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 22:54:48,958 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-28 22:54:48,958 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-11-28 22:54:48,959 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-28 22:54:48,959 INFO L133 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2018-11-28 22:54:48,959 INFO L133 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 -> 62ed6df4fdaf468f52c0eff1159abadc4f432e3d [2018-11-28 22:54:49,031 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 22:54:49,059 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 22:54:49,064 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 22:54:49,066 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 22:54:49,067 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 22:54:49,067 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/list-properties/simple_true-unreach-call_false-valid-memtrack.i [2018-11-28 22:54:49,128 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11748baa2/1a8f7772aa774e7c86920976bbb9d2d5/FLAG41d3c44fe [2018-11-28 22:54:49,621 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 22:54:49,622 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/list-properties/simple_true-unreach-call_false-valid-memtrack.i [2018-11-28 22:54:49,637 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11748baa2/1a8f7772aa774e7c86920976bbb9d2d5/FLAG41d3c44fe [2018-11-28 22:54:49,931 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11748baa2/1a8f7772aa774e7c86920976bbb9d2d5 [2018-11-28 22:54:49,935 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 22:54:49,937 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-28 22:54:49,938 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 22:54:49,939 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 22:54:49,943 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 22:54:49,944 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 10:54:49" (1/1) ... [2018-11-28 22:54:49,948 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3580b98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:54:49, skipping insertion in model container [2018-11-28 22:54:49,949 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 10:54:49" (1/1) ... [2018-11-28 22:54:49,957 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 22:54:50,015 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 22:54:50,393 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 22:54:50,413 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 22:54:50,498 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 22:54:50,645 INFO L195 MainTranslator]: Completed translation [2018-11-28 22:54:50,646 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:54:50 WrapperNode [2018-11-28 22:54:50,646 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 22:54:50,647 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 22:54:50,647 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 22:54:50,647 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 22:54:50,663 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:54:50" (1/1) ... [2018-11-28 22:54:50,663 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:54:50" (1/1) ... [2018-11-28 22:54:50,693 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:54:50" (1/1) ... [2018-11-28 22:54:50,693 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:54:50" (1/1) ... [2018-11-28 22:54:50,727 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:54:50" (1/1) ... [2018-11-28 22:54:50,734 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:54:50" (1/1) ... [2018-11-28 22:54:50,744 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:54:50" (1/1) ... [2018-11-28 22:54:50,756 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 22:54:50,759 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 22:54:50,759 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 22:54:50,759 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 22:54:50,760 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:54:50" (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 [2018-11-28 22:54:50,834 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-28 22:54:50,834 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 22:54:50,834 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2018-11-28 22:54:50,835 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-28 22:54:50,835 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-28 22:54:50,835 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-11-28 22:54:50,835 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2018-11-28 22:54:50,835 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2018-11-28 22:54:50,835 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2018-11-28 22:54:50,838 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2018-11-28 22:54:50,838 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2018-11-28 22:54:50,838 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2018-11-28 22:54:50,840 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2018-11-28 22:54:50,840 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2018-11-28 22:54:50,840 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2018-11-28 22:54:50,840 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2018-11-28 22:54:50,840 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2018-11-28 22:54:50,840 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2018-11-28 22:54:50,842 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2018-11-28 22:54:50,842 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2018-11-28 22:54:50,842 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2018-11-28 22:54:50,842 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2018-11-28 22:54:50,842 INFO L130 BoogieDeclarations]: Found specification of procedure select [2018-11-28 22:54:50,843 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2018-11-28 22:54:50,843 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2018-11-28 22:54:50,843 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2018-11-28 22:54:50,843 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2018-11-28 22:54:50,843 INFO L130 BoogieDeclarations]: Found specification of procedure random [2018-11-28 22:54:50,843 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2018-11-28 22:54:50,843 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2018-11-28 22:54:50,844 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2018-11-28 22:54:50,844 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2018-11-28 22:54:50,844 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2018-11-28 22:54:50,844 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2018-11-28 22:54:50,846 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2018-11-28 22:54:50,847 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2018-11-28 22:54:50,847 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2018-11-28 22:54:50,847 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2018-11-28 22:54:50,847 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2018-11-28 22:54:50,847 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2018-11-28 22:54:50,848 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2018-11-28 22:54:50,848 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2018-11-28 22:54:50,848 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2018-11-28 22:54:50,848 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2018-11-28 22:54:50,850 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2018-11-28 22:54:50,850 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2018-11-28 22:54:50,850 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2018-11-28 22:54:50,850 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2018-11-28 22:54:50,851 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2018-11-28 22:54:50,851 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2018-11-28 22:54:50,851 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2018-11-28 22:54:50,851 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2018-11-28 22:54:50,851 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2018-11-28 22:54:50,851 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2018-11-28 22:54:50,851 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2018-11-28 22:54:50,851 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2018-11-28 22:54:50,852 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2018-11-28 22:54:50,853 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2018-11-28 22:54:50,853 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2018-11-28 22:54:50,854 INFO L130 BoogieDeclarations]: Found specification of procedure free [2018-11-28 22:54:50,854 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2018-11-28 22:54:50,854 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2018-11-28 22:54:50,854 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2018-11-28 22:54:50,854 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2018-11-28 22:54:50,854 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2018-11-28 22:54:50,854 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2018-11-28 22:54:50,854 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2018-11-28 22:54:50,854 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-28 22:54:50,856 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2018-11-28 22:54:50,856 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2018-11-28 22:54:50,857 INFO L130 BoogieDeclarations]: Found specification of procedure __secure_getenv [2018-11-28 22:54:50,857 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2018-11-28 22:54:50,857 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2018-11-28 22:54:50,858 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2018-11-28 22:54:50,858 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2018-11-28 22:54:50,858 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2018-11-28 22:54:50,858 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2018-11-28 22:54:50,858 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2018-11-28 22:54:50,858 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2018-11-28 22:54:50,859 INFO L130 BoogieDeclarations]: Found specification of procedure system [2018-11-28 22:54:50,859 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2018-11-28 22:54:50,859 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2018-11-28 22:54:50,859 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2018-11-28 22:54:50,859 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2018-11-28 22:54:50,859 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2018-11-28 22:54:50,859 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2018-11-28 22:54:50,859 INFO L130 BoogieDeclarations]: Found specification of procedure div [2018-11-28 22:54:50,863 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2018-11-28 22:54:50,863 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2018-11-28 22:54:50,863 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2018-11-28 22:54:50,864 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2018-11-28 22:54:50,864 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2018-11-28 22:54:50,864 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2018-11-28 22:54:50,864 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2018-11-28 22:54:50,865 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2018-11-28 22:54:50,866 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2018-11-28 22:54:50,866 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2018-11-28 22:54:50,866 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2018-11-28 22:54:50,867 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2018-11-28 22:54:50,867 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2018-11-28 22:54:50,867 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2018-11-28 22:54:50,868 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2018-11-28 22:54:50,868 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2018-11-28 22:54:50,868 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2018-11-28 22:54:50,868 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2018-11-28 22:54:50,868 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2018-11-28 22:54:50,868 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2018-11-28 22:54:50,868 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2018-11-28 22:54:50,869 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-28 22:54:50,869 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-28 22:54:50,869 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-11-28 22:54:50,871 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-11-28 22:54:50,871 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-11-28 22:54:50,871 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-11-28 22:54:50,871 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-28 22:54:50,872 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 22:54:50,872 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-28 22:54:51,732 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 22:54:51,733 INFO L280 CfgBuilder]: Removed 2 assue(true) statements. [2018-11-28 22:54:51,733 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 10:54:51 BoogieIcfgContainer [2018-11-28 22:54:51,733 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 22:54:51,734 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-28 22:54:51,734 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-28 22:54:51,739 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-28 22:54:51,739 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 10:54:49" (1/3) ... [2018-11-28 22:54:51,740 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24a8624c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 10:54:51, skipping insertion in model container [2018-11-28 22:54:51,740 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:54:50" (2/3) ... [2018-11-28 22:54:51,740 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24a8624c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 10:54:51, skipping insertion in model container [2018-11-28 22:54:51,741 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 10:54:51" (3/3) ... [2018-11-28 22:54:51,744 INFO L112 eAbstractionObserver]: Analyzing ICFG simple_true-unreach-call_false-valid-memtrack.i [2018-11-28 22:54:51,755 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-28 22:54:51,765 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 15 error locations. [2018-11-28 22:54:51,781 INFO L257 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2018-11-28 22:54:51,810 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 22:54:51,810 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-28 22:54:51,811 INFO L383 AbstractCegarLoop]: Hoare is false [2018-11-28 22:54:51,811 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-28 22:54:51,811 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 22:54:51,812 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 22:54:51,812 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-28 22:54:51,812 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 22:54:51,812 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-28 22:54:51,830 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states. [2018-11-28 22:54:51,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-28 22:54:51,841 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 22:54:51,842 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 22:54:51,845 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr12REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr14ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION]=== [2018-11-28 22:54:51,851 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 22:54:51,852 INFO L82 PathProgramCache]: Analyzing trace with hash 915497384, now seen corresponding path program 1 times [2018-11-28 22:54:51,857 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-28 22:54:51,857 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-11-28 22:54:51,887 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 22:54:51,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 22:54:51,953 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 22:54:52,029 INFO L478 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 [2018-11-28 22:54:52,032 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-28 22:54:52,062 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-28 22:54:52,064 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-11-28 22:54:52,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 22:54:52,152 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 22:54:52,156 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 22:54:52,156 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-28 22:54:52,159 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 22:54:52,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 22:54:52,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 22:54:52,176 INFO L87 Difference]: Start difference. First operand 48 states. Second operand 4 states. [2018-11-28 22:54:52,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 22:54:52,785 INFO L93 Difference]: Finished difference Result 76 states and 82 transitions. [2018-11-28 22:54:52,786 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 22:54:52,788 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2018-11-28 22:54:52,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 22:54:52,799 INFO L225 Difference]: With dead ends: 76 [2018-11-28 22:54:52,802 INFO L226 Difference]: Without dead ends: 65 [2018-11-28 22:54:52,804 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-28 22:54:52,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-11-28 22:54:52,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 52. [2018-11-28 22:54:52,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-11-28 22:54:52,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 62 transitions. [2018-11-28 22:54:52,854 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 62 transitions. Word has length 10 [2018-11-28 22:54:52,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 22:54:52,854 INFO L480 AbstractCegarLoop]: Abstraction has 52 states and 62 transitions. [2018-11-28 22:54:52,854 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 22:54:52,855 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 62 transitions. [2018-11-28 22:54:52,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-28 22:54:52,855 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 22:54:52,855 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 22:54:52,856 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr12REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr14ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION]=== [2018-11-28 22:54:52,856 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 22:54:52,856 INFO L82 PathProgramCache]: Analyzing trace with hash 915497383, now seen corresponding path program 1 times [2018-11-28 22:54:52,856 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-28 22:54:52,856 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-11-28 22:54:52,873 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 22:54:52,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 22:54:52,898 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 22:54:52,919 INFO L478 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 [2018-11-28 22:54:52,919 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-28 22:54:52,947 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-28 22:54:52,948 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2018-11-28 22:54:53,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 22:54:53,015 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 22:54:53,017 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 22:54:53,017 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-28 22:54:53,019 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 22:54:53,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 22:54:53,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 22:54:53,020 INFO L87 Difference]: Start difference. First operand 52 states and 62 transitions. Second operand 4 states. [2018-11-28 22:54:53,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 22:54:53,492 INFO L93 Difference]: Finished difference Result 51 states and 53 transitions. [2018-11-28 22:54:53,493 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 22:54:53,493 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2018-11-28 22:54:53,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 22:54:53,496 INFO L225 Difference]: With dead ends: 51 [2018-11-28 22:54:53,496 INFO L226 Difference]: Without dead ends: 51 [2018-11-28 22:54:53,497 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-28 22:54:53,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-11-28 22:54:53,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 48. [2018-11-28 22:54:53,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-11-28 22:54:53,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 51 transitions. [2018-11-28 22:54:53,504 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 51 transitions. Word has length 10 [2018-11-28 22:54:53,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 22:54:53,505 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 51 transitions. [2018-11-28 22:54:53,505 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 22:54:53,505 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 51 transitions. [2018-11-28 22:54:53,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-11-28 22:54:53,506 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 22:54:53,506 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 22:54:53,506 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr12REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr14ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION]=== [2018-11-28 22:54:53,507 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 22:54:53,507 INFO L82 PathProgramCache]: Analyzing trace with hash -533544812, now seen corresponding path program 1 times [2018-11-28 22:54:53,507 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-28 22:54:53,508 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-11-28 22:54:53,526 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 22:54:53,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 22:54:53,559 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 22:54:53,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 22:54:53,630 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 22:54:53,633 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 22:54:53,634 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 22:54:53,634 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 22:54:53,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 22:54:53,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 22:54:53,635 INFO L87 Difference]: Start difference. First operand 48 states and 51 transitions. Second operand 4 states. [2018-11-28 22:54:53,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 22:54:53,847 INFO L93 Difference]: Finished difference Result 51 states and 53 transitions. [2018-11-28 22:54:53,849 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 22:54:53,849 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2018-11-28 22:54:53,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 22:54:53,850 INFO L225 Difference]: With dead ends: 51 [2018-11-28 22:54:53,851 INFO L226 Difference]: Without dead ends: 51 [2018-11-28 22:54:53,851 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-28 22:54:53,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-11-28 22:54:53,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 48. [2018-11-28 22:54:53,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-11-28 22:54:53,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 50 transitions. [2018-11-28 22:54:53,858 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 50 transitions. Word has length 15 [2018-11-28 22:54:53,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 22:54:53,859 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 50 transitions. [2018-11-28 22:54:53,859 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 22:54:53,859 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 50 transitions. [2018-11-28 22:54:53,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-11-28 22:54:53,860 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 22:54:53,860 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 22:54:53,861 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr12REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr14ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION]=== [2018-11-28 22:54:53,861 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 22:54:53,862 INFO L82 PathProgramCache]: Analyzing trace with hash -895242068, now seen corresponding path program 1 times [2018-11-28 22:54:53,862 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-28 22:54:53,862 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-11-28 22:54:53,879 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 22:54:53,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 22:54:53,941 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 22:54:53,950 INFO L478 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 [2018-11-28 22:54:53,951 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-28 22:54:53,971 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-28 22:54:53,971 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-11-28 22:54:54,017 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 13 treesize of output 10 [2018-11-28 22:54:54,031 INFO L478 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 10 treesize of output 9 [2018-11-28 22:54:54,032 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-28 22:54:54,040 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-28 22:54:54,081 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 13 treesize of output 10 [2018-11-28 22:54:54,087 INFO L478 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 10 treesize of output 9 [2018-11-28 22:54:54,088 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-28 22:54:54,093 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-28 22:54:54,111 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-28 22:54:54,112 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 3 variables, input treesize:34, output treesize:23 [2018-11-28 22:54:54,153 INFO L478 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 19 treesize of output 15 [2018-11-28 22:54:54,169 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 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 15 treesize of output 3 [2018-11-28 22:54:54,171 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-28 22:54:54,188 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-28 22:54:54,209 INFO L478 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 23 treesize of output 19 [2018-11-28 22:54:54,218 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 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 19 treesize of output 7 [2018-11-28 22:54:54,219 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-28 22:54:54,222 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-28 22:54:54,244 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-28 22:54:54,244 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:41, output treesize:11 [2018-11-28 22:54:54,302 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 22:54:54,303 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 22:54:54,306 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 22:54:54,306 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-28 22:54:54,306 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-28 22:54:54,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-28 22:54:54,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-11-28 22:54:54,307 INFO L87 Difference]: Start difference. First operand 48 states and 50 transitions. Second operand 6 states. [2018-11-28 22:54:54,697 WARN L180 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 30 [2018-11-28 22:54:55,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 22:54:55,187 INFO L93 Difference]: Finished difference Result 60 states and 62 transitions. [2018-11-28 22:54:55,188 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-28 22:54:55,188 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2018-11-28 22:54:55,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 22:54:55,189 INFO L225 Difference]: With dead ends: 60 [2018-11-28 22:54:55,189 INFO L226 Difference]: Without dead ends: 60 [2018-11-28 22:54:55,190 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2018-11-28 22:54:55,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2018-11-28 22:54:55,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 38. [2018-11-28 22:54:55,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-11-28 22:54:55,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 40 transitions. [2018-11-28 22:54:55,196 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 40 transitions. Word has length 17 [2018-11-28 22:54:55,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 22:54:55,196 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 40 transitions. [2018-11-28 22:54:55,196 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-28 22:54:55,196 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 40 transitions. [2018-11-28 22:54:55,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-11-28 22:54:55,197 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 22:54:55,197 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 22:54:55,198 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr12REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr14ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION]=== [2018-11-28 22:54:55,198 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 22:54:55,198 INFO L82 PathProgramCache]: Analyzing trace with hash -895242069, now seen corresponding path program 1 times [2018-11-28 22:54:55,198 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-28 22:54:55,199 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-11-28 22:54:55,218 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 22:54:55,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 22:54:55,271 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 22:54:55,331 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 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 12 treesize of output 11 [2018-11-28 22:54:55,331 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-28 22:54:55,341 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-28 22:54:55,341 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:12, output treesize:11 [2018-11-28 22:54:55,374 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 13 treesize of output 10 [2018-11-28 22:54:55,381 INFO L478 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 10 treesize of output 9 [2018-11-28 22:54:55,382 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-28 22:54:55,385 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-28 22:54:55,405 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-28 22:54:55,405 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:26, output treesize:17 [2018-11-28 22:54:55,455 INFO L478 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 21 treesize of output 17 [2018-11-28 22:54:55,459 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 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 17 treesize of output 5 [2018-11-28 22:54:55,459 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-28 22:54:55,463 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-28 22:54:55,470 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-28 22:54:55,471 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:26, output treesize:11 [2018-11-28 22:54:55,502 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 22:54:55,502 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 22:54:55,504 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 22:54:55,504 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-28 22:54:55,505 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-28 22:54:55,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-28 22:54:55,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-28 22:54:55,506 INFO L87 Difference]: Start difference. First operand 38 states and 40 transitions. Second operand 6 states. [2018-11-28 22:54:55,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 22:54:55,826 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2018-11-28 22:54:55,827 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-28 22:54:55,828 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2018-11-28 22:54:55,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 22:54:55,829 INFO L225 Difference]: With dead ends: 39 [2018-11-28 22:54:55,830 INFO L226 Difference]: Without dead ends: 39 [2018-11-28 22:54:55,830 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2018-11-28 22:54:55,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-11-28 22:54:55,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 33. [2018-11-28 22:54:55,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-11-28 22:54:55,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2018-11-28 22:54:55,835 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 17 [2018-11-28 22:54:55,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 22:54:55,836 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2018-11-28 22:54:55,836 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-28 22:54:55,836 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2018-11-28 22:54:55,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-11-28 22:54:55,837 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 22:54:55,837 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 22:54:55,837 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr12REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr14ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION]=== [2018-11-28 22:54:55,837 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 22:54:55,839 INFO L82 PathProgramCache]: Analyzing trace with hash 1536484195, now seen corresponding path program 1 times [2018-11-28 22:54:55,839 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-28 22:54:55,840 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-11-28 22:54:55,856 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 22:54:55,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 22:54:55,922 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 22:54:55,979 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 13 treesize of output 10 [2018-11-28 22:54:55,985 INFO L478 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 10 treesize of output 9 [2018-11-28 22:54:55,986 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-28 22:54:55,993 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-28 22:54:56,029 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 13 treesize of output 10 [2018-11-28 22:54:56,032 INFO L478 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 10 treesize of output 9 [2018-11-28 22:54:56,032 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-28 22:54:56,035 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-28 22:54:56,075 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-28 22:54:56,076 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 2 variables, input treesize:30, output treesize:22 [2018-11-28 22:54:56,157 INFO L478 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 15 treesize of output 11 [2018-11-28 22:54:56,162 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 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 3 [2018-11-28 22:54:56,163 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-28 22:54:56,165 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-28 22:54:56,175 INFO L478 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 15 treesize of output 11 [2018-11-28 22:54:56,179 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 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 3 [2018-11-28 22:54:56,179 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-28 22:54:56,182 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-28 22:54:56,191 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-28 22:54:56,193 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 3 variables, input treesize:29, output treesize:7 [2018-11-28 22:54:56,242 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 22:54:56,243 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-28 22:54:56,440 INFO L478 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 13 treesize of output 11 [2018-11-28 22:54:56,444 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2018-11-28 22:54:56,445 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-28 22:54:56,447 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-28 22:54:56,451 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 11 [2018-11-28 22:54:56,456 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2018-11-28 22:54:56,457 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-28 22:54:56,458 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-28 22:54:56,481 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-11-28 22:54:56,481 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 2 variables, input treesize:39, output treesize:7 [2018-11-28 22:54:56,508 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 22:54:56,511 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 22:54:56,511 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 11 [2018-11-28 22:54:56,511 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-28 22:54:56,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-28 22:54:56,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2018-11-28 22:54:56,512 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand 11 states. [2018-11-28 22:54:57,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 22:54:57,120 INFO L93 Difference]: Finished difference Result 53 states and 54 transitions. [2018-11-28 22:54:57,121 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-28 22:54:57,121 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 19 [2018-11-28 22:54:57,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 22:54:57,123 INFO L225 Difference]: With dead ends: 53 [2018-11-28 22:54:57,123 INFO L226 Difference]: Without dead ends: 53 [2018-11-28 22:54:57,124 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2018-11-28 22:54:57,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-11-28 22:54:57,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 43. [2018-11-28 22:54:57,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-11-28 22:54:57,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 45 transitions. [2018-11-28 22:54:57,130 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 45 transitions. Word has length 19 [2018-11-28 22:54:57,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 22:54:57,131 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 45 transitions. [2018-11-28 22:54:57,131 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-28 22:54:57,131 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 45 transitions. [2018-11-28 22:54:57,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-11-28 22:54:57,133 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 22:54:57,133 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 22:54:57,133 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr12REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr14ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION]=== [2018-11-28 22:54:57,133 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 22:54:57,134 INFO L82 PathProgramCache]: Analyzing trace with hash 386368445, now seen corresponding path program 1 times [2018-11-28 22:54:57,134 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-28 22:54:57,134 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 8 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-11-28 22:54:57,178 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 22:54:57,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 22:54:57,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 22:54:57,334 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-11-28 22:54:57,354 WARN L416 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-11-28 22:54:57,370 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 10:54:57 BoogieIcfgContainer [2018-11-28 22:54:57,370 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-28 22:54:57,370 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 22:54:57,370 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 22:54:57,370 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 22:54:57,372 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 10:54:51" (3/4) ... [2018-11-28 22:54:57,377 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-28 22:54:57,377 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 22:54:57,378 INFO L168 Benchmark]: Toolchain (without parser) took 7442.32 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 206.0 MB). Free memory was 952.7 MB in the beginning and 1.2 GB in the end (delta: -231.2 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 22:54:57,379 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 22:54:57,380 INFO L168 Benchmark]: CACSL2BoogieTranslator took 708.09 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.1 MB). Free memory was 952.7 MB in the beginning and 1.1 GB in the end (delta: -163.5 MB). Peak memory consumption was 37.1 MB. Max. memory is 11.5 GB. [2018-11-28 22:54:57,381 INFO L168 Benchmark]: Boogie Preprocessor took 111.88 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. [2018-11-28 22:54:57,382 INFO L168 Benchmark]: RCFGBuilder took 974.28 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: 44.5 MB). Peak memory consumption was 44.5 MB. Max. memory is 11.5 GB. [2018-11-28 22:54:57,383 INFO L168 Benchmark]: TraceAbstraction took 5635.51 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 64.0 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -112.2 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 22:54:57,384 INFO L168 Benchmark]: Witness Printer took 6.91 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 22:54:57,389 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 708.09 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.1 MB). Free memory was 952.7 MB in the beginning and 1.1 GB in the end (delta: -163.5 MB). Peak memory consumption was 37.1 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 111.88 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 974.28 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: 44.5 MB). Peak memory consumption was 44.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 5635.51 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 64.0 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -112.2 MB). There was no memory consumed. Max. memory is 11.5 GB. * Witness Printer took 6.91 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. 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: 626]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 626. Possible FailurePath: [L627] List a = (List) malloc(sizeof(struct node)); VAL [a={-2147483648:0}, malloc(sizeof(struct node))={-2147483648:0}] [L628] COND FALSE !(a == 0) VAL [a={-2147483648:0}, malloc(sizeof(struct node))={-2147483648:0}] [L629] List t; [L630] List p = a; VAL [a={-2147483648:0}, malloc(sizeof(struct node))={-2147483648:0}, p={-2147483648:0}] [L631] COND FALSE !(__VERIFIER_nondet_int()) [L638] p->h = 1 VAL [a={-2147483648:0}, malloc(sizeof(struct node))={-2147483648:0}, p={-2147483648:0}] [L639] p->n = 0 VAL [a={-2147483648:0}, malloc(sizeof(struct node))={-2147483648:0}, p={-2147483648:0}] [L640] p = a VAL [a={-2147483648:0}, malloc(sizeof(struct node))={-2147483648:0}, p={-2147483648:0}] [L641] COND TRUE p!=0 VAL [a={-2147483648:0}, malloc(sizeof(struct node))={-2147483648:0}, p={-2147483648:0}] [L642] EXPR p->h VAL [a={-2147483648:0}, malloc(sizeof(struct node))={-2147483648:0}, p={-2147483648:0}, p->h=1] [L642] COND FALSE !(p->h != 1) [L645] EXPR p->n VAL [a={-2147483648:0}, malloc(sizeof(struct node))={-2147483648:0}, p={-2147483648:0}, p->n={0:0}] [L645] p = p->n [L641] COND FALSE !(p!=0) VAL [a={-2147483648:0}, malloc(sizeof(struct node))={-2147483648:0}, p={0:0}] [L647] return 0; VAL [\result=0, a={-2147483648:0}, malloc(sizeof(struct node))={-2147483648:0}, p={0:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 50 locations, 15 error locations. UNSAFE Result, 5.5s OverallTime, 7 OverallIterations, 2 TraceHistogramMax, 3.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 143 SDtfs, 310 SDslu, 282 SDs, 0 SdLazy, 458 SolverSat, 48 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 117 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=52occurred in iteration=1, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 57 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 108 NumberOfCodeBlocks, 108 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 100 ConstructedInterpolants, 0 QuantifiedInterpolants, 8900 SizeOfPredicates, 35 NumberOfNonLiveVariables, 335 ConjunctsInSsa, 47 ConjunctsInUnsatCore, 7 InterpolantComputations, 5 PerfectInterpolantSequences, 4/6 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...