./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/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 0cd3be1d Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_4d6d7a33-c853-439a-83dc-05b66ca2b0e2/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_4d6d7a33-c853-439a-83dc-05b66ca2b0e2/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_4d6d7a33-c853-439a-83dc-05b66ca2b0e2/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_4d6d7a33-c853-439a-83dc-05b66ca2b0e2/bin-2019/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-properties/simple_true-unreach-call_false-valid-memtrack.i -s /tmp/vcloud-vcloud-master/worker/working_dir_4d6d7a33-c853-439a-83dc-05b66ca2b0e2/bin-2019/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_4d6d7a33-c853-439a-83dc-05b66ca2b0e2/bin-2019/uautomizer --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=/tmp/vcloud-vcloud-master/worker/working_dir_4d6d7a33-c853-439a-83dc-05b66ca2b0e2/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_4d6d7a33-c853-439a-83dc-05b66ca2b0e2/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_4d6d7a33-c853-439a-83dc-05b66ca2b0e2/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_4d6d7a33-c853-439a-83dc-05b66ca2b0e2/bin-2019/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-properties/simple_true-unreach-call_false-valid-memtrack.i -s /tmp/vcloud-vcloud-master/worker/working_dir_4d6d7a33-c853-439a-83dc-05b66ca2b0e2/bin-2019/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_4d6d7a33-c853-439a-83dc-05b66ca2b0e2/bin-2019/uautomizer --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 0.1.23-0cd3be1 [2018-11-28 12:35:15,522 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 12:35:15,524 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 12:35:15,532 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 12:35:15,532 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 12:35:15,533 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 12:35:15,534 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 12:35:15,535 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 12:35:15,536 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 12:35:15,537 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 12:35:15,538 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 12:35:15,538 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 12:35:15,539 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 12:35:15,540 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 12:35:15,541 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 12:35:15,541 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 12:35:15,542 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 12:35:15,543 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 12:35:15,545 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 12:35:15,546 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 12:35:15,547 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 12:35:15,548 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 12:35:15,550 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 12:35:15,550 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 12:35:15,551 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 12:35:15,551 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 12:35:15,552 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 12:35:15,553 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 12:35:15,554 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 12:35:15,554 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 12:35:15,555 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 12:35:15,555 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 12:35:15,555 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 12:35:15,556 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 12:35:15,557 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 12:35:15,557 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 12:35:15,557 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_4d6d7a33-c853-439a-83dc-05b66ca2b0e2/bin-2019/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2018-11-28 12:35:15,569 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 12:35:15,569 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 12:35:15,570 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-28 12:35:15,570 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-28 12:35:15,571 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 12:35:15,571 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 12:35:15,571 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 12:35:15,571 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 12:35:15,571 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-28 12:35:15,572 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-28 12:35:15,572 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 12:35:15,572 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-28 12:35:15,572 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 12:35:15,572 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-11-28 12:35:15,572 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-11-28 12:35:15,572 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-11-28 12:35:15,573 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-28 12:35:15,573 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-28 12:35:15,573 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 12:35:15,573 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 12:35:15,573 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 12:35:15,573 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-28 12:35:15,573 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-28 12:35:15,574 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 12:35:15,574 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 12:35:15,574 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-28 12:35:15,574 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-28 12:35:15,574 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-28 12:35:15,575 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 -> /tmp/vcloud-vcloud-master/worker/working_dir_4d6d7a33-c853-439a-83dc-05b66ca2b0e2/bin-2019/uautomizer 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 12:35:15,602 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 12:35:15,613 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 12:35:15,616 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 12:35:15,618 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 12:35:15,618 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 12:35:15,619 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_4d6d7a33-c853-439a-83dc-05b66ca2b0e2/bin-2019/uautomizer/../../sv-benchmarks/c/list-properties/simple_true-unreach-call_false-valid-memtrack.i [2018-11-28 12:35:15,668 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_4d6d7a33-c853-439a-83dc-05b66ca2b0e2/bin-2019/uautomizer/data/51680d4fa/4a7d68a1ef9448bb8d3057849ad5ccf1/FLAG7ebde5c62 [2018-11-28 12:35:16,018 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 12:35:16,019 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_4d6d7a33-c853-439a-83dc-05b66ca2b0e2/sv-benchmarks/c/list-properties/simple_true-unreach-call_false-valid-memtrack.i [2018-11-28 12:35:16,028 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_4d6d7a33-c853-439a-83dc-05b66ca2b0e2/bin-2019/uautomizer/data/51680d4fa/4a7d68a1ef9448bb8d3057849ad5ccf1/FLAG7ebde5c62 [2018-11-28 12:35:16,039 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_4d6d7a33-c853-439a-83dc-05b66ca2b0e2/bin-2019/uautomizer/data/51680d4fa/4a7d68a1ef9448bb8d3057849ad5ccf1 [2018-11-28 12:35:16,042 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 12:35:16,043 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-28 12:35:16,044 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 12:35:16,044 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 12:35:16,047 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 12:35:16,048 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 12:35:16" (1/1) ... [2018-11-28 12:35:16,050 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4760b21c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:35:16, skipping insertion in model container [2018-11-28 12:35:16,050 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 12:35:16" (1/1) ... [2018-11-28 12:35:16,056 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 12:35:16,082 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 12:35:16,272 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 12:35:16,321 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 12:35:16,345 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 12:35:16,379 INFO L195 MainTranslator]: Completed translation [2018-11-28 12:35:16,380 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:35:16 WrapperNode [2018-11-28 12:35:16,380 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 12:35:16,380 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 12:35:16,380 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 12:35:16,381 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 12:35:16,391 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:35:16" (1/1) ... [2018-11-28 12:35:16,391 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:35:16" (1/1) ... [2018-11-28 12:35:16,399 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:35:16" (1/1) ... [2018-11-28 12:35:16,399 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:35:16" (1/1) ... [2018-11-28 12:35:16,407 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:35:16" (1/1) ... [2018-11-28 12:35:16,410 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:35:16" (1/1) ... [2018-11-28 12:35:16,411 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:35:16" (1/1) ... [2018-11-28 12:35:16,415 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 12:35:16,415 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 12:35:16,415 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 12:35:16,415 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 12:35:16,416 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:35:16" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4d6d7a33-c853-439a-83dc-05b66ca2b0e2/bin-2019/uautomizer/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 12:35:16,453 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-28 12:35:16,453 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 12:35:16,453 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2018-11-28 12:35:16,453 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-28 12:35:16,454 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-28 12:35:16,454 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-11-28 12:35:16,454 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2018-11-28 12:35:16,454 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2018-11-28 12:35:16,454 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2018-11-28 12:35:16,454 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2018-11-28 12:35:16,454 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2018-11-28 12:35:16,454 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2018-11-28 12:35:16,454 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2018-11-28 12:35:16,454 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2018-11-28 12:35:16,454 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2018-11-28 12:35:16,454 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2018-11-28 12:35:16,454 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2018-11-28 12:35:16,454 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2018-11-28 12:35:16,455 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2018-11-28 12:35:16,455 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2018-11-28 12:35:16,455 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2018-11-28 12:35:16,455 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2018-11-28 12:35:16,455 INFO L130 BoogieDeclarations]: Found specification of procedure select [2018-11-28 12:35:16,455 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2018-11-28 12:35:16,455 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2018-11-28 12:35:16,455 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2018-11-28 12:35:16,455 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2018-11-28 12:35:16,455 INFO L130 BoogieDeclarations]: Found specification of procedure random [2018-11-28 12:35:16,455 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2018-11-28 12:35:16,455 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2018-11-28 12:35:16,455 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2018-11-28 12:35:16,455 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2018-11-28 12:35:16,456 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2018-11-28 12:35:16,456 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2018-11-28 12:35:16,456 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2018-11-28 12:35:16,456 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2018-11-28 12:35:16,456 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2018-11-28 12:35:16,456 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2018-11-28 12:35:16,456 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2018-11-28 12:35:16,456 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2018-11-28 12:35:16,456 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2018-11-28 12:35:16,457 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2018-11-28 12:35:16,457 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2018-11-28 12:35:16,457 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2018-11-28 12:35:16,457 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2018-11-28 12:35:16,457 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2018-11-28 12:35:16,457 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2018-11-28 12:35:16,457 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2018-11-28 12:35:16,457 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2018-11-28 12:35:16,457 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2018-11-28 12:35:16,458 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2018-11-28 12:35:16,458 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2018-11-28 12:35:16,458 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2018-11-28 12:35:16,458 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2018-11-28 12:35:16,458 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2018-11-28 12:35:16,458 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2018-11-28 12:35:16,458 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2018-11-28 12:35:16,458 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2018-11-28 12:35:16,459 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2018-11-28 12:35:16,459 INFO L130 BoogieDeclarations]: Found specification of procedure free [2018-11-28 12:35:16,459 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2018-11-28 12:35:16,459 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2018-11-28 12:35:16,459 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2018-11-28 12:35:16,459 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2018-11-28 12:35:16,459 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2018-11-28 12:35:16,459 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2018-11-28 12:35:16,459 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2018-11-28 12:35:16,459 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-28 12:35:16,460 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2018-11-28 12:35:16,460 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2018-11-28 12:35:16,460 INFO L130 BoogieDeclarations]: Found specification of procedure __secure_getenv [2018-11-28 12:35:16,460 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2018-11-28 12:35:16,460 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2018-11-28 12:35:16,460 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2018-11-28 12:35:16,460 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2018-11-28 12:35:16,460 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2018-11-28 12:35:16,460 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2018-11-28 12:35:16,461 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2018-11-28 12:35:16,461 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2018-11-28 12:35:16,461 INFO L130 BoogieDeclarations]: Found specification of procedure system [2018-11-28 12:35:16,461 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2018-11-28 12:35:16,461 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2018-11-28 12:35:16,461 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2018-11-28 12:35:16,461 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2018-11-28 12:35:16,461 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2018-11-28 12:35:16,461 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2018-11-28 12:35:16,462 INFO L130 BoogieDeclarations]: Found specification of procedure div [2018-11-28 12:35:16,462 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2018-11-28 12:35:16,462 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2018-11-28 12:35:16,462 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2018-11-28 12:35:16,462 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2018-11-28 12:35:16,462 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2018-11-28 12:35:16,462 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2018-11-28 12:35:16,463 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2018-11-28 12:35:16,463 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2018-11-28 12:35:16,463 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2018-11-28 12:35:16,463 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2018-11-28 12:35:16,463 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2018-11-28 12:35:16,463 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2018-11-28 12:35:16,463 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2018-11-28 12:35:16,463 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2018-11-28 12:35:16,464 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2018-11-28 12:35:16,464 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2018-11-28 12:35:16,464 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2018-11-28 12:35:16,464 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2018-11-28 12:35:16,464 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2018-11-28 12:35:16,464 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2018-11-28 12:35:16,464 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2018-11-28 12:35:16,464 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-28 12:35:16,465 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-28 12:35:16,465 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-28 12:35:16,465 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-11-28 12:35:16,465 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-11-28 12:35:16,465 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-28 12:35:16,465 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-28 12:35:16,465 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 12:35:16,465 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-28 12:35:16,752 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 12:35:16,752 INFO L280 CfgBuilder]: Removed 2 assue(true) statements. [2018-11-28 12:35:16,753 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 12:35:16 BoogieIcfgContainer [2018-11-28 12:35:16,753 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 12:35:16,753 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-28 12:35:16,754 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-28 12:35:16,756 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-28 12:35:16,756 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 12:35:16" (1/3) ... [2018-11-28 12:35:16,757 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78e6bae3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 12:35:16, skipping insertion in model container [2018-11-28 12:35:16,757 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:35:16" (2/3) ... [2018-11-28 12:35:16,758 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78e6bae3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 12:35:16, skipping insertion in model container [2018-11-28 12:35:16,758 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 12:35:16" (3/3) ... [2018-11-28 12:35:16,759 INFO L112 eAbstractionObserver]: Analyzing ICFG simple_true-unreach-call_false-valid-memtrack.i [2018-11-28 12:35:16,766 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-28 12:35:16,772 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 15 error locations. [2018-11-28 12:35:16,783 INFO L257 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2018-11-28 12:35:16,797 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 12:35:16,798 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-28 12:35:16,798 INFO L383 AbstractCegarLoop]: Hoare is false [2018-11-28 12:35:16,798 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-28 12:35:16,798 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 12:35:16,798 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 12:35:16,798 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-28 12:35:16,798 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 12:35:16,798 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-28 12:35:16,809 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states. [2018-11-28 12:35:16,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-28 12:35:16,817 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:35:16,818 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 12:35:16,819 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr9REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr14ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION]=== [2018-11-28 12:35:16,824 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:35:16,825 INFO L82 PathProgramCache]: Analyzing trace with hash 1635117424, now seen corresponding path program 1 times [2018-11-28 12:35:16,826 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:35:16,827 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:35:16,857 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:35:16,857 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:35:16,857 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:35:16,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:35:16,915 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 12:35:16,916 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 12:35:16,917 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-28 12:35:16,919 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-28 12:35:16,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-28 12:35:16,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-28 12:35:16,928 INFO L87 Difference]: Start difference. First operand 49 states. Second operand 2 states. [2018-11-28 12:35:16,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:35:16,940 INFO L93 Difference]: Finished difference Result 49 states and 52 transitions. [2018-11-28 12:35:16,940 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-28 12:35:16,941 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2018-11-28 12:35:16,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 12:35:16,946 INFO L225 Difference]: With dead ends: 49 [2018-11-28 12:35:16,946 INFO L226 Difference]: Without dead ends: 41 [2018-11-28 12:35:16,947 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 12:35:16,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-11-28 12:35:16,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-11-28 12:35:16,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-11-28 12:35:16,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 42 transitions. [2018-11-28 12:35:16,974 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 42 transitions. Word has length 10 [2018-11-28 12:35:16,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 12:35:16,975 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 42 transitions. [2018-11-28 12:35:16,975 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-28 12:35:16,975 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 42 transitions. [2018-11-28 12:35:16,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-28 12:35:16,975 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:35:16,975 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 12:35:16,975 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr9REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr14ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION]=== [2018-11-28 12:35:16,976 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:35:16,976 INFO L82 PathProgramCache]: Analyzing trace with hash -850992160, now seen corresponding path program 1 times [2018-11-28 12:35:16,976 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:35:16,976 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:35:16,977 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:35:16,977 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:35:16,977 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:35:16,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:35:17,030 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 12:35:17,030 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 12:35:17,031 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-28 12:35:17,032 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 12:35:17,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 12:35:17,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 12:35:17,032 INFO L87 Difference]: Start difference. First operand 41 states and 42 transitions. Second operand 4 states. [2018-11-28 12:35:17,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:35:17,137 INFO L93 Difference]: Finished difference Result 49 states and 51 transitions. [2018-11-28 12:35:17,138 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 12:35:17,138 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2018-11-28 12:35:17,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 12:35:17,139 INFO L225 Difference]: With dead ends: 49 [2018-11-28 12:35:17,139 INFO L226 Difference]: Without dead ends: 49 [2018-11-28 12:35:17,140 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 12:35:17,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-11-28 12:35:17,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 43. [2018-11-28 12:35:17,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-11-28 12:35:17,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 49 transitions. [2018-11-28 12:35:17,146 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 49 transitions. Word has length 11 [2018-11-28 12:35:17,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 12:35:17,146 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 49 transitions. [2018-11-28 12:35:17,146 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 12:35:17,146 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 49 transitions. [2018-11-28 12:35:17,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-28 12:35:17,147 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:35:17,147 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 12:35:17,147 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr9REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr14ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION]=== [2018-11-28 12:35:17,147 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:35:17,148 INFO L82 PathProgramCache]: Analyzing trace with hash -850992159, now seen corresponding path program 1 times [2018-11-28 12:35:17,148 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:35:17,148 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:35:17,149 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:35:17,149 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:35:17,149 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:35:17,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:35:17,196 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 12:35:17,196 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 12:35:17,196 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-28 12:35:17,196 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 12:35:17,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 12:35:17,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 12:35:17,197 INFO L87 Difference]: Start difference. First operand 43 states and 49 transitions. Second operand 4 states. [2018-11-28 12:35:17,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:35:17,277 INFO L93 Difference]: Finished difference Result 56 states and 58 transitions. [2018-11-28 12:35:17,278 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 12:35:17,278 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2018-11-28 12:35:17,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 12:35:17,278 INFO L225 Difference]: With dead ends: 56 [2018-11-28 12:35:17,278 INFO L226 Difference]: Without dead ends: 56 [2018-11-28 12:35:17,279 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 12:35:17,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2018-11-28 12:35:17,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 50. [2018-11-28 12:35:17,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2018-11-28 12:35:17,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 53 transitions. [2018-11-28 12:35:17,283 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 53 transitions. Word has length 11 [2018-11-28 12:35:17,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 12:35:17,283 INFO L480 AbstractCegarLoop]: Abstraction has 50 states and 53 transitions. [2018-11-28 12:35:17,283 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 12:35:17,283 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 53 transitions. [2018-11-28 12:35:17,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-11-28 12:35:17,284 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:35:17,284 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 12:35:17,284 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr9REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr14ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION]=== [2018-11-28 12:35:17,284 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:35:17,284 INFO L82 PathProgramCache]: Analyzing trace with hash 1777420732, now seen corresponding path program 1 times [2018-11-28 12:35:17,284 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:35:17,284 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:35:17,285 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:35:17,285 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:35:17,285 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:35:17,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:35:17,329 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 12:35:17,329 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 12:35:17,330 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 12:35:17,330 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 12:35:17,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 12:35:17,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 12:35:17,330 INFO L87 Difference]: Start difference. First operand 50 states and 53 transitions. Second operand 4 states. [2018-11-28 12:35:17,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:35:17,377 INFO L93 Difference]: Finished difference Result 53 states and 55 transitions. [2018-11-28 12:35:17,378 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 12:35:17,378 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2018-11-28 12:35:17,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 12:35:17,379 INFO L225 Difference]: With dead ends: 53 [2018-11-28 12:35:17,379 INFO L226 Difference]: Without dead ends: 53 [2018-11-28 12:35:17,379 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 12:35:17,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-11-28 12:35:17,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 50. [2018-11-28 12:35:17,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2018-11-28 12:35:17,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 52 transitions. [2018-11-28 12:35:17,385 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 52 transitions. Word has length 16 [2018-11-28 12:35:17,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 12:35:17,385 INFO L480 AbstractCegarLoop]: Abstraction has 50 states and 52 transitions. [2018-11-28 12:35:17,385 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 12:35:17,385 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 52 transitions. [2018-11-28 12:35:17,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-11-28 12:35:17,386 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:35:17,386 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 12:35:17,386 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr9REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr14ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION]=== [2018-11-28 12:35:17,386 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:35:17,386 INFO L82 PathProgramCache]: Analyzing trace with hash -38969261, now seen corresponding path program 1 times [2018-11-28 12:35:17,386 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:35:17,386 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:35:17,387 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:35:17,387 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:35:17,387 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:35:17,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:35:17,442 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 12:35:17,443 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 12:35:17,443 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-28 12:35:17,443 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-28 12:35:17,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-28 12:35:17,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-11-28 12:35:17,444 INFO L87 Difference]: Start difference. First operand 50 states and 52 transitions. Second operand 6 states. [2018-11-28 12:35:17,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:35:17,560 INFO L93 Difference]: Finished difference Result 64 states and 66 transitions. [2018-11-28 12:35:17,560 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-28 12:35:17,560 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2018-11-28 12:35:17,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 12:35:17,561 INFO L225 Difference]: With dead ends: 64 [2018-11-28 12:35:17,561 INFO L226 Difference]: Without dead ends: 64 [2018-11-28 12:35:17,561 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-28 12:35:17,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2018-11-28 12:35:17,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 48. [2018-11-28 12:35:17,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-11-28 12:35:17,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 50 transitions. [2018-11-28 12:35:17,565 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 50 transitions. Word has length 19 [2018-11-28 12:35:17,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 12:35:17,566 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 50 transitions. [2018-11-28 12:35:17,566 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-28 12:35:17,566 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 50 transitions. [2018-11-28 12:35:17,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-11-28 12:35:17,567 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:35:17,567 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 12:35:17,567 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr9REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr14ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION]=== [2018-11-28 12:35:17,567 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:35:17,567 INFO L82 PathProgramCache]: Analyzing trace with hash -38969260, now seen corresponding path program 1 times [2018-11-28 12:35:17,567 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:35:17,567 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:35:17,568 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:35:17,568 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:35:17,568 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:35:17,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:35:17,626 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 12:35:17,626 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 12:35:17,627 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-28 12:35:17,627 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-28 12:35:17,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-28 12:35:17,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-11-28 12:35:17,628 INFO L87 Difference]: Start difference. First operand 48 states and 50 transitions. Second operand 6 states. [2018-11-28 12:35:17,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:35:17,755 INFO L93 Difference]: Finished difference Result 60 states and 62 transitions. [2018-11-28 12:35:17,755 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-28 12:35:17,755 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2018-11-28 12:35:17,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 12:35:17,756 INFO L225 Difference]: With dead ends: 60 [2018-11-28 12:35:17,756 INFO L226 Difference]: Without dead ends: 60 [2018-11-28 12:35:17,756 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2018-11-28 12:35:17,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2018-11-28 12:35:17,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 34. [2018-11-28 12:35:17,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-11-28 12:35:17,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 35 transitions. [2018-11-28 12:35:17,758 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 35 transitions. Word has length 19 [2018-11-28 12:35:17,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 12:35:17,758 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 35 transitions. [2018-11-28 12:35:17,758 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-28 12:35:17,758 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 35 transitions. [2018-11-28 12:35:17,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-11-28 12:35:17,759 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:35:17,759 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 12:35:17,759 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr9REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr14ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION]=== [2018-11-28 12:35:17,759 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:35:17,759 INFO L82 PathProgramCache]: Analyzing trace with hash 1662718154, now seen corresponding path program 1 times [2018-11-28 12:35:17,759 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:35:17,759 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:35:17,760 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:35:17,760 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:35:17,760 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:35:17,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:35:17,847 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 12:35:17,847 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 12:35:17,847 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4d6d7a33-c853-439a-83dc-05b66ca2b0e2/bin-2019/uautomizer/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 12:35:17,863 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:35:17,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:35:17,884 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:35:17,962 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 12:35:17,964 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 12:35:17,964 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-28 12:35:17,966 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-28 12:35:17,972 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 12:35:17,973 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 12:35:17,974 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-28 12:35:17,975 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-28 12:35:17,978 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-28 12:35:17,979 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 2 variables, input treesize:26, output treesize:18 [2018-11-28 12:35:18,004 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 12:35:18,007 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 12:35:18,007 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-28 12:35:18,009 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-28 12:35:18,017 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 12:35:18,019 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 12:35:18,019 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-28 12:35:18,021 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-28 12:35:18,023 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 12:35:18,023 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 3 variables, input treesize:29, output treesize:7 [2018-11-28 12:35:18,035 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 12:35:18,056 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 12:35:18,056 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10] total 11 [2018-11-28 12:35:18,056 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-28 12:35:18,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-28 12:35:18,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-11-28 12:35:18,057 INFO L87 Difference]: Start difference. First operand 34 states and 35 transitions. Second operand 11 states. [2018-11-28 12:35:18,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:35:18,189 INFO L93 Difference]: Finished difference Result 55 states and 56 transitions. [2018-11-28 12:35:18,190 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-28 12:35:18,190 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 20 [2018-11-28 12:35:18,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 12:35:18,191 INFO L225 Difference]: With dead ends: 55 [2018-11-28 12:35:18,191 INFO L226 Difference]: Without dead ends: 55 [2018-11-28 12:35:18,191 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 13 SyntacticMatches, 6 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2018-11-28 12:35:18,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-11-28 12:35:18,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 45. [2018-11-28 12:35:18,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-11-28 12:35:18,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 47 transitions. [2018-11-28 12:35:18,194 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 47 transitions. Word has length 20 [2018-11-28 12:35:18,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 12:35:18,198 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 47 transitions. [2018-11-28 12:35:18,198 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-28 12:35:18,198 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 47 transitions. [2018-11-28 12:35:18,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-11-28 12:35:18,199 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:35:18,199 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 12:35:18,199 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr9REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr14ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION]=== [2018-11-28 12:35:18,199 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:35:18,199 INFO L82 PathProgramCache]: Analyzing trace with hash 4653910, now seen corresponding path program 1 times [2018-11-28 12:35:18,199 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:35:18,199 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:35:18,200 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:35:18,200 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:35:18,200 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:35:18,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 12:35:18,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 12:35:18,229 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-11-28 12:35:18,239 WARN L416 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-11-28 12:35:18,248 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 12:35:18 BoogieIcfgContainer [2018-11-28 12:35:18,248 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-28 12:35:18,249 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 12:35:18,249 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 12:35:18,249 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 12:35:18,249 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 12:35:16" (3/4) ... [2018-11-28 12:35:18,252 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-28 12:35:18,252 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 12:35:18,252 INFO L168 Benchmark]: Toolchain (without parser) took 2209.93 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.6 MB). Free memory was 949.9 MB in the beginning and 854.3 MB in the end (delta: 95.7 MB). Peak memory consumption was 238.3 MB. Max. memory is 11.5 GB. [2018-11-28 12:35:18,253 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 976.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 12:35:18,253 INFO L168 Benchmark]: CACSL2BoogieTranslator took 336.23 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.6 MB). Free memory was 949.9 MB in the beginning and 1.1 GB in the end (delta: -176.8 MB). Peak memory consumption was 24.3 MB. Max. memory is 11.5 GB. [2018-11-28 12:35:18,254 INFO L168 Benchmark]: Boogie Preprocessor took 34.66 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 12:35:18,254 INFO L168 Benchmark]: RCFGBuilder took 337.63 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: 48.0 MB). Peak memory consumption was 48.0 MB. Max. memory is 11.5 GB. [2018-11-28 12:35:18,255 INFO L168 Benchmark]: TraceAbstraction took 1495.03 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 854.3 MB in the end (delta: 224.5 MB). Peak memory consumption was 224.5 MB. Max. memory is 11.5 GB. [2018-11-28 12:35:18,255 INFO L168 Benchmark]: Witness Printer took 3.07 ms. Allocated memory is still 1.2 GB. Free memory is still 854.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 12:35:18,257 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 976.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 336.23 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.6 MB). Free memory was 949.9 MB in the beginning and 1.1 GB in the end (delta: -176.8 MB). Peak memory consumption was 24.3 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 34.66 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 337.63 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: 48.0 MB). Peak memory consumption was 48.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1495.03 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 854.3 MB in the end (delta: 224.5 MB). Peak memory consumption was 224.5 MB. Max. memory is 11.5 GB. * Witness Printer took 3.07 ms. Allocated memory is still 1.2 GB. Free memory is still 854.3 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, 1.4s OverallTime, 8 OverallIterations, 2 TraceHistogramMax, 0.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 200 SDtfs, 385 SDslu, 278 SDs, 0 SdLazy, 442 SolverSat, 51 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 67 GetRequests, 23 SyntacticMatches, 6 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.3s 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, 0.0s SatisfiabilityAnalysisTime, 0.4s 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 0.1.23-0cd3be1 [2018-11-28 12:35:19,699 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 12:35:19,700 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 12:35:19,708 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 12:35:19,708 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 12:35:19,709 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 12:35:19,710 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 12:35:19,711 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 12:35:19,712 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 12:35:19,713 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 12:35:19,713 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 12:35:19,714 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 12:35:19,714 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 12:35:19,715 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 12:35:19,716 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 12:35:19,716 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 12:35:19,717 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 12:35:19,718 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 12:35:19,720 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 12:35:19,721 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 12:35:19,722 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 12:35:19,722 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 12:35:19,724 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 12:35:19,724 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 12:35:19,724 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 12:35:19,725 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 12:35:19,726 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 12:35:19,726 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 12:35:19,727 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 12:35:19,728 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 12:35:19,728 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 12:35:19,728 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 12:35:19,729 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 12:35:19,729 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 12:35:19,729 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 12:35:19,730 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 12:35:19,730 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_4d6d7a33-c853-439a-83dc-05b66ca2b0e2/bin-2019/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2018-11-28 12:35:19,741 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 12:35:19,741 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 12:35:19,742 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-28 12:35:19,742 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-28 12:35:19,742 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 12:35:19,743 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 12:35:19,743 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 12:35:19,743 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 12:35:19,743 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-28 12:35:19,743 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-28 12:35:19,743 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 12:35:19,743 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-28 12:35:19,744 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 12:35:19,744 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-11-28 12:35:19,744 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-11-28 12:35:19,744 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-11-28 12:35:19,744 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-28 12:35:19,744 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-11-28 12:35:19,744 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-11-28 12:35:19,745 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-28 12:35:19,745 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 12:35:19,745 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 12:35:19,745 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 12:35:19,745 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-28 12:35:19,745 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-28 12:35:19,745 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 12:35:19,746 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 12:35:19,746 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-28 12:35:19,746 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-11-28 12:35:19,746 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-28 12:35:19,746 INFO L133 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2018-11-28 12:35:19,746 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 -> /tmp/vcloud-vcloud-master/worker/working_dir_4d6d7a33-c853-439a-83dc-05b66ca2b0e2/bin-2019/uautomizer 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 12:35:19,770 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 12:35:19,778 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 12:35:19,781 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 12:35:19,782 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 12:35:19,782 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 12:35:19,782 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_4d6d7a33-c853-439a-83dc-05b66ca2b0e2/bin-2019/uautomizer/../../sv-benchmarks/c/list-properties/simple_true-unreach-call_false-valid-memtrack.i [2018-11-28 12:35:19,821 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_4d6d7a33-c853-439a-83dc-05b66ca2b0e2/bin-2019/uautomizer/data/59157d842/d4f0f5b5b7a042b396835c7e9392a2dc/FLAGdfcb67308 [2018-11-28 12:35:20,257 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 12:35:20,258 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_4d6d7a33-c853-439a-83dc-05b66ca2b0e2/sv-benchmarks/c/list-properties/simple_true-unreach-call_false-valid-memtrack.i [2018-11-28 12:35:20,266 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_4d6d7a33-c853-439a-83dc-05b66ca2b0e2/bin-2019/uautomizer/data/59157d842/d4f0f5b5b7a042b396835c7e9392a2dc/FLAGdfcb67308 [2018-11-28 12:35:20,274 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_4d6d7a33-c853-439a-83dc-05b66ca2b0e2/bin-2019/uautomizer/data/59157d842/d4f0f5b5b7a042b396835c7e9392a2dc [2018-11-28 12:35:20,276 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 12:35:20,277 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-28 12:35:20,278 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 12:35:20,278 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 12:35:20,281 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 12:35:20,281 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 12:35:20" (1/1) ... [2018-11-28 12:35:20,284 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f622ba4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:35:20, skipping insertion in model container [2018-11-28 12:35:20,284 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 12:35:20" (1/1) ... [2018-11-28 12:35:20,290 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 12:35:20,317 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 12:35:20,508 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 12:35:20,518 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 12:35:20,603 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 12:35:20,630 INFO L195 MainTranslator]: Completed translation [2018-11-28 12:35:20,631 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:35:20 WrapperNode [2018-11-28 12:35:20,631 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 12:35:20,631 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 12:35:20,631 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 12:35:20,631 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 12:35:20,639 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:35:20" (1/1) ... [2018-11-28 12:35:20,639 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:35:20" (1/1) ... [2018-11-28 12:35:20,651 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:35:20" (1/1) ... [2018-11-28 12:35:20,651 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:35:20" (1/1) ... [2018-11-28 12:35:20,662 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:35:20" (1/1) ... [2018-11-28 12:35:20,665 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:35:20" (1/1) ... [2018-11-28 12:35:20,668 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:35:20" (1/1) ... [2018-11-28 12:35:20,672 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 12:35:20,672 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 12:35:20,672 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 12:35:20,672 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 12:35:20,673 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:35:20" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4d6d7a33-c853-439a-83dc-05b66ca2b0e2/bin-2019/uautomizer/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 12:35:20,705 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-28 12:35:20,705 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 12:35:20,705 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2018-11-28 12:35:20,705 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-28 12:35:20,706 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-28 12:35:20,706 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-11-28 12:35:20,706 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2018-11-28 12:35:20,706 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2018-11-28 12:35:20,706 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2018-11-28 12:35:20,706 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2018-11-28 12:35:20,706 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2018-11-28 12:35:20,707 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2018-11-28 12:35:20,707 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2018-11-28 12:35:20,707 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2018-11-28 12:35:20,707 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2018-11-28 12:35:20,707 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2018-11-28 12:35:20,707 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2018-11-28 12:35:20,707 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2018-11-28 12:35:20,707 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2018-11-28 12:35:20,708 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2018-11-28 12:35:20,708 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2018-11-28 12:35:20,708 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2018-11-28 12:35:20,708 INFO L130 BoogieDeclarations]: Found specification of procedure select [2018-11-28 12:35:20,708 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2018-11-28 12:35:20,708 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2018-11-28 12:35:20,708 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2018-11-28 12:35:20,708 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2018-11-28 12:35:20,708 INFO L130 BoogieDeclarations]: Found specification of procedure random [2018-11-28 12:35:20,709 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2018-11-28 12:35:20,709 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2018-11-28 12:35:20,709 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2018-11-28 12:35:20,709 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2018-11-28 12:35:20,709 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2018-11-28 12:35:20,709 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2018-11-28 12:35:20,709 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2018-11-28 12:35:20,709 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2018-11-28 12:35:20,709 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2018-11-28 12:35:20,710 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2018-11-28 12:35:20,710 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2018-11-28 12:35:20,710 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2018-11-28 12:35:20,710 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2018-11-28 12:35:20,710 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2018-11-28 12:35:20,710 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2018-11-28 12:35:20,710 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2018-11-28 12:35:20,710 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2018-11-28 12:35:20,711 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2018-11-28 12:35:20,711 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2018-11-28 12:35:20,711 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2018-11-28 12:35:20,711 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2018-11-28 12:35:20,711 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2018-11-28 12:35:20,711 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2018-11-28 12:35:20,711 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2018-11-28 12:35:20,711 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2018-11-28 12:35:20,711 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2018-11-28 12:35:20,712 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2018-11-28 12:35:20,712 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2018-11-28 12:35:20,712 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2018-11-28 12:35:20,712 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2018-11-28 12:35:20,712 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2018-11-28 12:35:20,712 INFO L130 BoogieDeclarations]: Found specification of procedure free [2018-11-28 12:35:20,712 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2018-11-28 12:35:20,712 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2018-11-28 12:35:20,712 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2018-11-28 12:35:20,712 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2018-11-28 12:35:20,713 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2018-11-28 12:35:20,713 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2018-11-28 12:35:20,713 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2018-11-28 12:35:20,713 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-28 12:35:20,713 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2018-11-28 12:35:20,713 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2018-11-28 12:35:20,713 INFO L130 BoogieDeclarations]: Found specification of procedure __secure_getenv [2018-11-28 12:35:20,713 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2018-11-28 12:35:20,713 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2018-11-28 12:35:20,714 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2018-11-28 12:35:20,714 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2018-11-28 12:35:20,714 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2018-11-28 12:35:20,714 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2018-11-28 12:35:20,714 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2018-11-28 12:35:20,714 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2018-11-28 12:35:20,714 INFO L130 BoogieDeclarations]: Found specification of procedure system [2018-11-28 12:35:20,714 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2018-11-28 12:35:20,715 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2018-11-28 12:35:20,715 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2018-11-28 12:35:20,715 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2018-11-28 12:35:20,715 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2018-11-28 12:35:20,715 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2018-11-28 12:35:20,715 INFO L130 BoogieDeclarations]: Found specification of procedure div [2018-11-28 12:35:20,715 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2018-11-28 12:35:20,715 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2018-11-28 12:35:20,715 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2018-11-28 12:35:20,715 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2018-11-28 12:35:20,716 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2018-11-28 12:35:20,716 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2018-11-28 12:35:20,716 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2018-11-28 12:35:20,716 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2018-11-28 12:35:20,716 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2018-11-28 12:35:20,716 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2018-11-28 12:35:20,716 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2018-11-28 12:35:20,716 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2018-11-28 12:35:20,716 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2018-11-28 12:35:20,717 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2018-11-28 12:35:20,717 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2018-11-28 12:35:20,717 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2018-11-28 12:35:20,717 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2018-11-28 12:35:20,717 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2018-11-28 12:35:20,717 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2018-11-28 12:35:20,717 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2018-11-28 12:35:20,717 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2018-11-28 12:35:20,718 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-28 12:35:20,718 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-28 12:35:20,718 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-11-28 12:35:20,718 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-11-28 12:35:20,718 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-11-28 12:35:20,718 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-11-28 12:35:20,718 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-28 12:35:20,718 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 12:35:20,718 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-28 12:35:21,037 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 12:35:21,037 INFO L280 CfgBuilder]: Removed 2 assue(true) statements. [2018-11-28 12:35:21,038 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 12:35:21 BoogieIcfgContainer [2018-11-28 12:35:21,038 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 12:35:21,039 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-28 12:35:21,039 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-28 12:35:21,041 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-28 12:35:21,041 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 12:35:20" (1/3) ... [2018-11-28 12:35:21,042 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@83a9550 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 12:35:21, skipping insertion in model container [2018-11-28 12:35:21,042 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:35:20" (2/3) ... [2018-11-28 12:35:21,042 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@83a9550 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 12:35:21, skipping insertion in model container [2018-11-28 12:35:21,043 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 12:35:21" (3/3) ... [2018-11-28 12:35:21,044 INFO L112 eAbstractionObserver]: Analyzing ICFG simple_true-unreach-call_false-valid-memtrack.i [2018-11-28 12:35:21,052 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-28 12:35:21,057 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 15 error locations. [2018-11-28 12:35:21,069 INFO L257 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2018-11-28 12:35:21,087 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 12:35:21,088 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-28 12:35:21,088 INFO L383 AbstractCegarLoop]: Hoare is false [2018-11-28 12:35:21,088 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-28 12:35:21,088 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 12:35:21,088 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 12:35:21,088 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-28 12:35:21,089 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 12:35:21,089 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-28 12:35:21,099 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states. [2018-11-28 12:35:21,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-28 12:35:21,104 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:35:21,105 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 12:35:21,106 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr14ENSURES_VIOLATIONMEMORY_LEAK, mainErr12REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION]=== [2018-11-28 12:35:21,110 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:35:21,110 INFO L82 PathProgramCache]: Analyzing trace with hash 915497384, now seen corresponding path program 1 times [2018-11-28 12:35:21,112 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-28 12:35:21,113 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4d6d7a33-c853-439a-83dc-05b66ca2b0e2/bin-2019/uautomizer/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 12:35:21,127 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:35:21,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:35:21,166 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:35:21,201 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 12:35:21,202 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-28 12:35:21,212 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-28 12:35:21,212 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-11-28 12:35:21,235 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 12:35:21,235 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 12:35:21,239 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 12:35:21,239 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-28 12:35:21,241 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 12:35:21,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 12:35:21,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 12:35:21,251 INFO L87 Difference]: Start difference. First operand 48 states. Second operand 4 states. [2018-11-28 12:35:21,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:35:21,479 INFO L93 Difference]: Finished difference Result 76 states and 82 transitions. [2018-11-28 12:35:21,481 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 12:35:21,482 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2018-11-28 12:35:21,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 12:35:21,489 INFO L225 Difference]: With dead ends: 76 [2018-11-28 12:35:21,489 INFO L226 Difference]: Without dead ends: 65 [2018-11-28 12:35:21,491 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 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 12:35:21,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-11-28 12:35:21,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 52. [2018-11-28 12:35:21,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-11-28 12:35:21,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 62 transitions. [2018-11-28 12:35:21,523 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 62 transitions. Word has length 10 [2018-11-28 12:35:21,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 12:35:21,524 INFO L480 AbstractCegarLoop]: Abstraction has 52 states and 62 transitions. [2018-11-28 12:35:21,524 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 12:35:21,524 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 62 transitions. [2018-11-28 12:35:21,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-28 12:35:21,524 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:35:21,525 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 12:35:21,525 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr14ENSURES_VIOLATIONMEMORY_LEAK, mainErr12REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION]=== [2018-11-28 12:35:21,525 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:35:21,525 INFO L82 PathProgramCache]: Analyzing trace with hash 915497383, now seen corresponding path program 1 times [2018-11-28 12:35:21,525 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-28 12:35:21,525 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4d6d7a33-c853-439a-83dc-05b66ca2b0e2/bin-2019/uautomizer/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 12:35:21,539 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:35:21,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:35:21,553 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:35:21,557 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 12:35:21,557 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-28 12:35:21,562 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-28 12:35:21,563 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2018-11-28 12:35:21,584 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 12:35:21,584 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 12:35:21,585 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 12:35:21,585 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-28 12:35:21,586 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 12:35:21,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 12:35:21,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 12:35:21,587 INFO L87 Difference]: Start difference. First operand 52 states and 62 transitions. Second operand 4 states. [2018-11-28 12:35:21,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:35:21,692 INFO L93 Difference]: Finished difference Result 51 states and 53 transitions. [2018-11-28 12:35:21,692 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 12:35:21,693 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2018-11-28 12:35:21,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 12:35:21,693 INFO L225 Difference]: With dead ends: 51 [2018-11-28 12:35:21,693 INFO L226 Difference]: Without dead ends: 51 [2018-11-28 12:35:21,694 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 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 12:35:21,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-11-28 12:35:21,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 48. [2018-11-28 12:35:21,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-11-28 12:35:21,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 51 transitions. [2018-11-28 12:35:21,699 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 51 transitions. Word has length 10 [2018-11-28 12:35:21,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 12:35:21,699 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 51 transitions. [2018-11-28 12:35:21,699 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 12:35:21,699 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 51 transitions. [2018-11-28 12:35:21,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-11-28 12:35:21,700 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:35:21,700 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 12:35:21,700 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr14ENSURES_VIOLATIONMEMORY_LEAK, mainErr12REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION]=== [2018-11-28 12:35:21,700 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:35:21,700 INFO L82 PathProgramCache]: Analyzing trace with hash -533544812, now seen corresponding path program 1 times [2018-11-28 12:35:21,701 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-28 12:35:21,701 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4d6d7a33-c853-439a-83dc-05b66ca2b0e2/bin-2019/uautomizer/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 12:35:21,719 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:35:21,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:35:21,737 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:35:21,759 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 12:35:21,760 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 12:35:21,761 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 12:35:21,761 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 12:35:21,762 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 12:35:21,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 12:35:21,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 12:35:21,762 INFO L87 Difference]: Start difference. First operand 48 states and 51 transitions. Second operand 4 states. [2018-11-28 12:35:21,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:35:21,855 INFO L93 Difference]: Finished difference Result 51 states and 53 transitions. [2018-11-28 12:35:21,856 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 12:35:21,856 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2018-11-28 12:35:21,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 12:35:21,857 INFO L225 Difference]: With dead ends: 51 [2018-11-28 12:35:21,857 INFO L226 Difference]: Without dead ends: 51 [2018-11-28 12:35:21,858 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 12:35:21,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-11-28 12:35:21,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 48. [2018-11-28 12:35:21,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-11-28 12:35:21,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 50 transitions. [2018-11-28 12:35:21,863 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 50 transitions. Word has length 15 [2018-11-28 12:35:21,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 12:35:21,863 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 50 transitions. [2018-11-28 12:35:21,863 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 12:35:21,863 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 50 transitions. [2018-11-28 12:35:21,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-11-28 12:35:21,864 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:35:21,864 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 12:35:21,864 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr14ENSURES_VIOLATIONMEMORY_LEAK, mainErr12REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION]=== [2018-11-28 12:35:21,865 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:35:21,865 INFO L82 PathProgramCache]: Analyzing trace with hash -895242068, now seen corresponding path program 1 times [2018-11-28 12:35:21,865 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-28 12:35:21,865 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4d6d7a33-c853-439a-83dc-05b66ca2b0e2/bin-2019/uautomizer/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 12:35:21,882 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:35:21,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:35:21,926 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:35:21,931 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 12:35:21,931 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-28 12:35:21,937 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-28 12:35:21,937 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-11-28 12:35:21,956 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 12:35:21,960 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 12:35:21,960 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-28 12:35:21,963 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-28 12:35:21,983 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 12:35:21,987 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 12:35:21,987 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-28 12:35:21,990 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-28 12:35:22,000 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 12:35:22,000 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 3 variables, input treesize:34, output treesize:23 [2018-11-28 12:35:22,018 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 12:35:22,022 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 12:35:22,022 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-28 12:35:22,025 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-28 12:35:22,036 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 12:35:22,039 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 12:35:22,040 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-28 12:35:22,042 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-28 12:35:22,046 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 12:35:22,047 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:41, output treesize:11 [2018-11-28 12:35:22,068 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 12:35:22,068 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 12:35:22,069 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 12:35:22,070 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-28 12:35:22,070 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-28 12:35:22,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-28 12:35:22,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-11-28 12:35:22,070 INFO L87 Difference]: Start difference. First operand 48 states and 50 transitions. Second operand 6 states. [2018-11-28 12:35:22,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:35:22,427 INFO L93 Difference]: Finished difference Result 60 states and 62 transitions. [2018-11-28 12:35:22,427 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-28 12:35:22,427 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2018-11-28 12:35:22,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 12:35:22,428 INFO L225 Difference]: With dead ends: 60 [2018-11-28 12:35:22,428 INFO L226 Difference]: Without dead ends: 60 [2018-11-28 12:35:22,428 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2018-11-28 12:35:22,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2018-11-28 12:35:22,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 38. [2018-11-28 12:35:22,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-11-28 12:35:22,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 40 transitions. [2018-11-28 12:35:22,431 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 40 transitions. Word has length 17 [2018-11-28 12:35:22,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 12:35:22,431 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 40 transitions. [2018-11-28 12:35:22,431 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-28 12:35:22,431 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 40 transitions. [2018-11-28 12:35:22,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-11-28 12:35:22,432 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:35:22,432 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 12:35:22,432 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr14ENSURES_VIOLATIONMEMORY_LEAK, mainErr12REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION]=== [2018-11-28 12:35:22,432 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:35:22,432 INFO L82 PathProgramCache]: Analyzing trace with hash -895242069, now seen corresponding path program 1 times [2018-11-28 12:35:22,433 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-28 12:35:22,433 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4d6d7a33-c853-439a-83dc-05b66ca2b0e2/bin-2019/uautomizer/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 12:35:22,445 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:35:22,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:35:22,477 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:35:22,494 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 12:35:22,495 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-28 12:35:22,499 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-28 12:35:22,500 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:12, output treesize:11 [2018-11-28 12:35:22,519 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 12:35:22,522 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 12:35:22,522 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-28 12:35:22,525 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-28 12:35:22,533 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 12:35:22,534 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:26, output treesize:17 [2018-11-28 12:35:22,547 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 12:35:22,550 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 12:35:22,550 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-28 12:35:22,552 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-28 12:35:22,556 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 12:35:22,556 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:26, output treesize:11 [2018-11-28 12:35:22,575 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 12:35:22,576 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 12:35:22,577 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 12:35:22,577 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-28 12:35:22,577 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-28 12:35:22,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-28 12:35:22,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-28 12:35:22,578 INFO L87 Difference]: Start difference. First operand 38 states and 40 transitions. Second operand 6 states. [2018-11-28 12:35:22,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:35:22,756 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2018-11-28 12:35:22,757 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-28 12:35:22,757 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2018-11-28 12:35:22,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 12:35:22,757 INFO L225 Difference]: With dead ends: 39 [2018-11-28 12:35:22,757 INFO L226 Difference]: Without dead ends: 39 [2018-11-28 12:35:22,758 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2018-11-28 12:35:22,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-11-28 12:35:22,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 33. [2018-11-28 12:35:22,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-11-28 12:35:22,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2018-11-28 12:35:22,760 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 17 [2018-11-28 12:35:22,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 12:35:22,760 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2018-11-28 12:35:22,760 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-28 12:35:22,760 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2018-11-28 12:35:22,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-11-28 12:35:22,760 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:35:22,761 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 12:35:22,761 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr14ENSURES_VIOLATIONMEMORY_LEAK, mainErr12REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION]=== [2018-11-28 12:35:22,761 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:35:22,761 INFO L82 PathProgramCache]: Analyzing trace with hash 1536484195, now seen corresponding path program 1 times [2018-11-28 12:35:22,762 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-28 12:35:22,762 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4d6d7a33-c853-439a-83dc-05b66ca2b0e2/bin-2019/uautomizer/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 12:35:22,775 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:35:22,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:35:22,818 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:35:22,837 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 12:35:22,840 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 12:35:22,840 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-28 12:35:22,842 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-28 12:35:22,860 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 12:35:22,865 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 12:35:22,865 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-28 12:35:22,867 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-28 12:35:22,874 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-28 12:35:22,875 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 2 variables, input treesize:30, output treesize:22 [2018-11-28 12:35:22,909 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 12:35:22,911 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 12:35:22,912 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-28 12:35:22,914 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-28 12:35:22,919 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 12:35:22,921 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 12:35:22,921 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-28 12:35:22,922 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-28 12:35:22,925 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 12:35:22,925 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 3 variables, input treesize:29, output treesize:7 [2018-11-28 12:35:22,943 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 12:35:22,943 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-28 12:35:23,026 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 12:35:23,028 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 12:35:23,029 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-28 12:35:23,030 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-28 12:35:23,033 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 12:35:23,035 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 12:35:23,035 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-28 12:35:23,036 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-28 12:35:23,049 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-11-28 12:35:23,049 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 2 variables, input treesize:39, output treesize:7 [2018-11-28 12:35:23,066 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 12:35:23,068 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 12:35:23,068 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 11 [2018-11-28 12:35:23,068 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-28 12:35:23,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-28 12:35:23,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2018-11-28 12:35:23,069 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand 11 states. [2018-11-28 12:35:23,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:35:23,411 INFO L93 Difference]: Finished difference Result 53 states and 54 transitions. [2018-11-28 12:35:23,412 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-28 12:35:23,412 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 19 [2018-11-28 12:35:23,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 12:35:23,412 INFO L225 Difference]: With dead ends: 53 [2018-11-28 12:35:23,412 INFO L226 Difference]: Without dead ends: 53 [2018-11-28 12:35:23,413 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2018-11-28 12:35:23,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-11-28 12:35:23,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 43. [2018-11-28 12:35:23,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-11-28 12:35:23,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 45 transitions. [2018-11-28 12:35:23,416 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 45 transitions. Word has length 19 [2018-11-28 12:35:23,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 12:35:23,416 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 45 transitions. [2018-11-28 12:35:23,416 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-28 12:35:23,416 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 45 transitions. [2018-11-28 12:35:23,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-11-28 12:35:23,417 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:35:23,417 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 12:35:23,417 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr14ENSURES_VIOLATIONMEMORY_LEAK, mainErr12REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION]=== [2018-11-28 12:35:23,417 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:35:23,417 INFO L82 PathProgramCache]: Analyzing trace with hash 386368445, now seen corresponding path program 1 times [2018-11-28 12:35:23,417 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-28 12:35:23,417 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4d6d7a33-c853-439a-83dc-05b66ca2b0e2/bin-2019/uautomizer/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 12:35:23,430 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:35:23,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 12:35:23,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 12:35:23,534 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-11-28 12:35:23,547 WARN L416 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-11-28 12:35:23,558 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 12:35:23 BoogieIcfgContainer [2018-11-28 12:35:23,558 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-28 12:35:23,558 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 12:35:23,558 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 12:35:23,558 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 12:35:23,559 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 12:35:21" (3/4) ... [2018-11-28 12:35:23,562 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-28 12:35:23,562 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 12:35:23,563 INFO L168 Benchmark]: Toolchain (without parser) took 3286.03 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 228.1 MB). Free memory was 938.0 MB in the beginning and 1.2 GB in the end (delta: -261.1 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 12:35:23,564 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 972.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 12:35:23,564 INFO L168 Benchmark]: CACSL2BoogieTranslator took 353.25 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 172.0 MB). Free memory was 938.0 MB in the beginning and 1.2 GB in the end (delta: -215.1 MB). Peak memory consumption was 25.7 MB. Max. memory is 11.5 GB. [2018-11-28 12:35:23,564 INFO L168 Benchmark]: Boogie Preprocessor took 40.53 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 12:35:23,565 INFO L168 Benchmark]: RCFGBuilder took 366.09 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 51.4 MB). Peak memory consumption was 51.4 MB. Max. memory is 11.5 GB. [2018-11-28 12:35:23,565 INFO L168 Benchmark]: TraceAbstraction took 2519.18 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 56.1 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -104.5 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 12:35:23,565 INFO L168 Benchmark]: Witness Printer took 3.87 ms. Allocated memory is still 1.3 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 7.1 MB). Peak memory consumption was 7.1 MB. Max. memory is 11.5 GB. [2018-11-28 12:35:23,568 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 972.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 353.25 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 172.0 MB). Free memory was 938.0 MB in the beginning and 1.2 GB in the end (delta: -215.1 MB). Peak memory consumption was 25.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 40.53 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. * RCFGBuilder took 366.09 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 51.4 MB). Peak memory consumption was 51.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2519.18 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 56.1 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -104.5 MB). There was no memory consumed. Max. memory is 11.5 GB. * Witness Printer took 3.87 ms. Allocated memory is still 1.3 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 7.1 MB). Peak memory consumption was 7.1 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 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, 2.4s OverallTime, 7 OverallIterations, 2 TraceHistogramMax, 1.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 143 SDtfs, 310 SDslu, 282 SDs, 0 SdLazy, 458 SolverSat, 48 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 117 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.5s 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, 0.1s SatisfiabilityAnalysisTime, 0.6s 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...