./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/termination-crafted/SyntaxSupportPointer01-1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 678e0110 Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_6741ac20-98cd-40e0-b346-a59772be15d9/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_6741ac20-98cd-40e0-b346-a59772be15d9/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_6741ac20-98cd-40e0-b346-a59772be15d9/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_6741ac20-98cd-40e0-b346-a59772be15d9/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/termination-crafted/SyntaxSupportPointer01-1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_6741ac20-98cd-40e0-b346-a59772be15d9/bin/uautomizer/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_6741ac20-98cd-40e0-b346-a59772be15d9/bin/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 64bit --witnessprinter.graph.data.programhash f2a8d3919c0496882213752e07135061fdbafdf6 ........................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- Skipped default analysis because property is memsafety ### Bit-precise run ### This is Ultimate 0.1.24-678e011 [2019-11-20 04:30:25,950 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 04:30:25,952 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 04:30:25,966 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 04:30:25,967 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 04:30:25,968 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 04:30:25,969 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 04:30:25,972 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 04:30:25,981 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 04:30:25,983 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 04:30:25,984 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 04:30:25,985 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 04:30:25,985 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 04:30:25,986 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 04:30:25,987 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 04:30:25,988 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 04:30:25,988 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 04:30:25,989 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 04:30:25,991 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 04:30:25,994 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 04:30:25,998 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 04:30:26,000 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 04:30:26,003 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 04:30:26,003 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 04:30:26,007 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 04:30:26,008 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 04:30:26,008 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 04:30:26,010 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 04:30:26,010 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 04:30:26,011 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 04:30:26,011 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 04:30:26,012 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 04:30:26,013 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 04:30:26,013 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 04:30:26,014 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 04:30:26,014 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 04:30:26,015 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 04:30:26,015 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 04:30:26,015 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 04:30:26,016 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 04:30:26,018 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 04:30:26,018 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_6741ac20-98cd-40e0-b346-a59772be15d9/bin/uautomizer/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Bitvector.epf [2019-11-20 04:30:26,042 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 04:30:26,043 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 04:30:26,043 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 04:30:26,044 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 04:30:26,044 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 04:30:26,044 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 04:30:26,044 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-20 04:30:26,044 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-20 04:30:26,045 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 04:30:26,045 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-11-20 04:30:26,045 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-11-20 04:30:26,045 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-11-20 04:30:26,045 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-20 04:30:26,045 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-20 04:30:26,046 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-20 04:30:26,046 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 04:30:26,046 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 04:30:26,046 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 04:30:26,046 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-20 04:30:26,046 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-20 04:30:26,047 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 04:30:26,047 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 04:30:26,047 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-20 04:30:26,047 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-20 04:30:26,047 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-20 04:30:26,047 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-20 04:30:26,048 INFO L138 SettingsManager]: * Logic for external solver=AUFBV Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_6741ac20-98cd-40e0-b346-a59772be15d9/bin/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 -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f2a8d3919c0496882213752e07135061fdbafdf6 [2019-11-20 04:30:26,224 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 04:30:26,238 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 04:30:26,241 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 04:30:26,243 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 04:30:26,243 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 04:30:26,244 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_6741ac20-98cd-40e0-b346-a59772be15d9/bin/uautomizer/../../sv-benchmarks/c/termination-crafted/SyntaxSupportPointer01-1.c [2019-11-20 04:30:26,305 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6741ac20-98cd-40e0-b346-a59772be15d9/bin/uautomizer/data/bd120bc13/61aaa1582ea447e48a3b885120e52db8/FLAGa85a2de7e [2019-11-20 04:30:26,694 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 04:30:26,696 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_6741ac20-98cd-40e0-b346-a59772be15d9/sv-benchmarks/c/termination-crafted/SyntaxSupportPointer01-1.c [2019-11-20 04:30:26,702 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6741ac20-98cd-40e0-b346-a59772be15d9/bin/uautomizer/data/bd120bc13/61aaa1582ea447e48a3b885120e52db8/FLAGa85a2de7e [2019-11-20 04:30:27,133 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_6741ac20-98cd-40e0-b346-a59772be15d9/bin/uautomizer/data/bd120bc13/61aaa1582ea447e48a3b885120e52db8 [2019-11-20 04:30:27,136 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 04:30:27,137 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-20 04:30:27,138 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 04:30:27,138 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 04:30:27,143 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 04:30:27,144 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 04:30:27" (1/1) ... [2019-11-20 04:30:27,145 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c1f8c65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:30:27, skipping insertion in model container [2019-11-20 04:30:27,146 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 04:30:27" (1/1) ... [2019-11-20 04:30:27,152 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 04:30:27,167 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 04:30:27,369 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 04:30:27,384 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 04:30:27,397 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 04:30:27,412 INFO L192 MainTranslator]: Completed translation [2019-11-20 04:30:27,412 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:30:27 WrapperNode [2019-11-20 04:30:27,413 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 04:30:27,413 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 04:30:27,413 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 04:30:27,414 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 04:30:27,426 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:30:27" (1/1) ... [2019-11-20 04:30:27,426 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:30:27" (1/1) ... [2019-11-20 04:30:27,434 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:30:27" (1/1) ... [2019-11-20 04:30:27,435 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:30:27" (1/1) ... [2019-11-20 04:30:27,449 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:30:27" (1/1) ... [2019-11-20 04:30:27,453 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:30:27" (1/1) ... [2019-11-20 04:30:27,454 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:30:27" (1/1) ... [2019-11-20 04:30:27,456 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 04:30:27,457 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 04:30:27,457 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 04:30:27,457 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 04:30:27,458 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:30:27" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6741ac20-98cd-40e0-b346-a59772be15d9/bin/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 [2019-11-20 04:30:27,537 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-20 04:30:27,538 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 04:30:27,538 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-20 04:30:27,538 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-20 04:30:27,538 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-20 04:30:27,539 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-20 04:30:27,539 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-20 04:30:27,539 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-20 04:30:27,540 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-11-20 04:30:27,540 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-20 04:30:27,541 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-20 04:30:27,541 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-20 04:30:27,542 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 04:30:27,856 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 04:30:27,856 INFO L285 CfgBuilder]: Removed 1 assume(true) statements. [2019-11-20 04:30:27,857 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 04:30:27 BoogieIcfgContainer [2019-11-20 04:30:27,857 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 04:30:27,858 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-20 04:30:27,858 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-20 04:30:27,862 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-20 04:30:27,862 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 04:30:27" (1/3) ... [2019-11-20 04:30:27,864 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15b6e854 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 04:30:27, skipping insertion in model container [2019-11-20 04:30:27,864 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:30:27" (2/3) ... [2019-11-20 04:30:27,864 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15b6e854 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 04:30:27, skipping insertion in model container [2019-11-20 04:30:27,864 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 04:30:27" (3/3) ... [2019-11-20 04:30:27,866 INFO L109 eAbstractionObserver]: Analyzing ICFG SyntaxSupportPointer01-1.c [2019-11-20 04:30:27,875 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-20 04:30:27,881 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 12 error locations. [2019-11-20 04:30:27,906 INFO L249 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2019-11-20 04:30:27,929 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-20 04:30:27,929 INFO L374 AbstractCegarLoop]: Hoare is false [2019-11-20 04:30:27,929 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-20 04:30:27,930 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 04:30:27,930 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 04:30:27,931 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-20 04:30:27,931 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 04:30:27,931 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-20 04:30:27,952 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2019-11-20 04:30:27,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-20 04:30:27,962 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 04:30:27,963 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-20 04:30:27,963 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr11ENSURES_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr10ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr9ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION]=== [2019-11-20 04:30:27,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:30:27,969 INFO L82 PathProgramCache]: Analyzing trace with hash -522028180, now seen corresponding path program 1 times [2019-11-20 04:30:27,980 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 04:30:27,981 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1120422271] [2019-11-20 04:30:27,982 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6741ac20-98cd-40e0-b346-a59772be15d9/bin/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 [2019-11-20 04:30:28,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:30:28,107 INFO L255 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-20 04:30:28,112 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:30:28,178 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-20 04:30:28,179 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 04:30:28,188 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 04:30:28,189 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 04:30:28,189 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-20 04:30:28,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 04:30:28,200 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 04:30:28,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 04:30:28,216 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1120422271] [2019-11-20 04:30:28,217 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 04:30:28,217 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-20 04:30:28,218 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867305328] [2019-11-20 04:30:28,222 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-20 04:30:28,222 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 04:30:28,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-20 04:30:28,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 04:30:28,238 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 3 states. [2019-11-20 04:30:28,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 04:30:28,338 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2019-11-20 04:30:28,339 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-20 04:30:28,340 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2019-11-20 04:30:28,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 04:30:28,348 INFO L225 Difference]: With dead ends: 28 [2019-11-20 04:30:28,348 INFO L226 Difference]: Without dead ends: 25 [2019-11-20 04:30:28,349 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 04:30:28,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2019-11-20 04:30:28,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2019-11-20 04:30:28,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-11-20 04:30:28,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2019-11-20 04:30:28,377 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 7 [2019-11-20 04:30:28,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 04:30:28,378 INFO L462 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2019-11-20 04:30:28,378 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-20 04:30:28,378 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2019-11-20 04:30:28,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-20 04:30:28,379 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 04:30:28,379 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-20 04:30:28,580 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 04:30:28,581 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr11ENSURES_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr10ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr9ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION]=== [2019-11-20 04:30:28,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:30:28,581 INFO L82 PathProgramCache]: Analyzing trace with hash -522028179, now seen corresponding path program 1 times [2019-11-20 04:30:28,582 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 04:30:28,582 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1895472305] [2019-11-20 04:30:28,582 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6741ac20-98cd-40e0-b346-a59772be15d9/bin/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 [2019-11-20 04:30:28,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:30:28,631 INFO L255 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-20 04:30:28,632 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:30:28,651 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-20 04:30:28,651 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 04:30:28,674 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 04:30:28,674 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 04:30:28,675 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-11-20 04:30:28,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 04:30:28,695 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 04:30:28,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 04:30:28,748 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1895472305] [2019-11-20 04:30:28,748 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 04:30:28,749 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2019-11-20 04:30:28,749 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150890186] [2019-11-20 04:30:28,750 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-20 04:30:28,750 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 04:30:28,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-20 04:30:28,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-20 04:30:28,751 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand 4 states. [2019-11-20 04:30:28,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 04:30:28,842 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2019-11-20 04:30:28,843 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-20 04:30:28,843 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2019-11-20 04:30:28,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 04:30:28,844 INFO L225 Difference]: With dead ends: 20 [2019-11-20 04:30:28,844 INFO L226 Difference]: Without dead ends: 20 [2019-11-20 04:30:28,844 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-20 04:30:28,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-11-20 04:30:28,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2019-11-20 04:30:28,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-11-20 04:30:28,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2019-11-20 04:30:28,847 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 7 [2019-11-20 04:30:28,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 04:30:28,847 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2019-11-20 04:30:28,847 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-20 04:30:28,847 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2019-11-20 04:30:28,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-20 04:30:28,848 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 04:30:28,848 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 04:30:29,048 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 04:30:29,049 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr11ENSURES_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr10ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr9ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION]=== [2019-11-20 04:30:29,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:30:29,049 INFO L82 PathProgramCache]: Analyzing trace with hash -141661244, now seen corresponding path program 1 times [2019-11-20 04:30:29,049 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 04:30:29,050 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [856537398] [2019-11-20 04:30:29,050 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6741ac20-98cd-40e0-b346-a59772be15d9/bin/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 [2019-11-20 04:30:29,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:30:29,114 INFO L255 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 04:30:29,115 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:30:29,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 04:30:29,139 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 04:30:29,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 04:30:29,158 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [856537398] [2019-11-20 04:30:29,159 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 04:30:29,159 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 2] imperfect sequences [] total 4 [2019-11-20 04:30:29,159 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770577511] [2019-11-20 04:30:29,159 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-20 04:30:29,160 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 04:30:29,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-20 04:30:29,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-20 04:30:29,160 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 5 states. [2019-11-20 04:30:29,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 04:30:29,213 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2019-11-20 04:30:29,213 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-20 04:30:29,214 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2019-11-20 04:30:29,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 04:30:29,215 INFO L225 Difference]: With dead ends: 19 [2019-11-20 04:30:29,215 INFO L226 Difference]: Without dead ends: 19 [2019-11-20 04:30:29,215 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-20 04:30:29,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2019-11-20 04:30:29,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2019-11-20 04:30:29,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-11-20 04:30:29,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2019-11-20 04:30:29,219 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 12 [2019-11-20 04:30:29,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 04:30:29,219 INFO L462 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2019-11-20 04:30:29,220 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-20 04:30:29,220 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2019-11-20 04:30:29,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-20 04:30:29,220 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 04:30:29,220 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 04:30:29,425 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 04:30:29,425 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr11ENSURES_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr10ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr9ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION]=== [2019-11-20 04:30:29,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:30:29,425 INFO L82 PathProgramCache]: Analyzing trace with hash 1302500167, now seen corresponding path program 1 times [2019-11-20 04:30:29,426 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 04:30:29,427 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [521551795] [2019-11-20 04:30:29,427 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6741ac20-98cd-40e0-b346-a59772be15d9/bin/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 [2019-11-20 04:30:29,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:30:29,493 INFO L255 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-20 04:30:29,494 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:30:29,499 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-20 04:30:29,499 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 04:30:29,501 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 04:30:29,501 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 04:30:29,501 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-20 04:30:29,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 04:30:29,547 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 04:30:33,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 04:30:33,634 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [521551795] [2019-11-20 04:30:33,634 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 04:30:33,634 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2019-11-20 04:30:33,634 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916856293] [2019-11-20 04:30:33,635 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-20 04:30:33,635 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 04:30:33,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-20 04:30:33,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=36, Unknown=2, NotChecked=0, Total=56 [2019-11-20 04:30:33,636 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 8 states. [2019-11-20 04:30:33,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 04:30:33,763 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2019-11-20 04:30:33,764 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-20 04:30:33,764 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2019-11-20 04:30:33,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 04:30:33,764 INFO L225 Difference]: With dead ends: 18 [2019-11-20 04:30:33,764 INFO L226 Difference]: Without dead ends: 0 [2019-11-20 04:30:33,765 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=30, Invalid=58, Unknown=2, NotChecked=0, Total=90 [2019-11-20 04:30:33,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-20 04:30:33,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-20 04:30:33,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-20 04:30:33,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-20 04:30:33,766 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2019-11-20 04:30:33,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 04:30:33,766 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-20 04:30:33,766 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-20 04:30:33,766 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-20 04:30:33,766 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-20 04:30:33,967 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 04:30:33,971 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 04:30:33 BoogieIcfgContainer [2019-11-20 04:30:33,971 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-20 04:30:33,972 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-20 04:30:33,972 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-20 04:30:33,973 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-20 04:30:33,973 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 04:30:27" (3/4) ... [2019-11-20 04:30:33,977 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-20 04:30:33,986 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2019-11-20 04:30:33,987 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2019-11-20 04:30:33,992 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2019-11-20 04:30:33,992 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-11-20 04:30:33,992 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-20 04:30:33,992 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-20 04:30:34,029 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_6741ac20-98cd-40e0-b346-a59772be15d9/bin/uautomizer/witness.graphml [2019-11-20 04:30:34,034 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-20 04:30:34,035 INFO L168 Benchmark]: Toolchain (without parser) took 6898.26 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.8 MB). Free memory was 950.0 MB in the beginning and 996.9 MB in the end (delta: -46.9 MB). Peak memory consumption was 89.9 MB. Max. memory is 11.5 GB. [2019-11-20 04:30:34,036 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 04:30:34,036 INFO L168 Benchmark]: CACSL2BoogieTranslator took 275.01 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.8 MB). Free memory was 950.0 MB in the beginning and 1.1 GB in the end (delta: -178.2 MB). Peak memory consumption was 22.8 MB. Max. memory is 11.5 GB. [2019-11-20 04:30:34,037 INFO L168 Benchmark]: Boogie Preprocessor took 43.19 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 04:30:34,037 INFO L168 Benchmark]: RCFGBuilder took 400.54 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: 21.6 MB). Peak memory consumption was 21.6 MB. Max. memory is 11.5 GB. [2019-11-20 04:30:34,038 INFO L168 Benchmark]: TraceAbstraction took 6113.24 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 102.9 MB). Peak memory consumption was 102.9 MB. Max. memory is 11.5 GB. [2019-11-20 04:30:34,038 INFO L168 Benchmark]: Witness Printer took 61.51 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 996.9 MB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2019-11-20 04:30:34,040 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 275.01 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.8 MB). Free memory was 950.0 MB in the beginning and 1.1 GB in the end (delta: -178.2 MB). Peak memory consumption was 22.8 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 43.19 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 400.54 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: 21.6 MB). Peak memory consumption was 21.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 6113.24 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 102.9 MB). Peak memory consumption was 102.9 MB. Max. memory is 11.5 GB. * Witness Printer took 61.51 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 996.9 MB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 13]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 16]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 19]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 16]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 17]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 17]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 19]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 15]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 19]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 15]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 17]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 17]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - AllSpecificationsHoldResult: All specifications hold 12 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 33 locations, 12 error locations. Result: SAFE, OverallTime: 6.0s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 51 SDtfs, 67 SDslu, 37 SDs, 0 SdLazy, 66 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 78 GetRequests, 63 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 4.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 4.4s InterpolantComputationTime, 40 NumberOfCodeBlocks, 40 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 72 ConstructedInterpolants, 1 QuantifiedInterpolants, 3996 SizeOfPredicates, 8 NumberOfNonLiveVariables, 154 ConjunctsInSsa, 20 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...