./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety-ext3/derefAfterFree2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_4a7e4836-f4c7-481d-8c5a-9e627ec555c1/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_4a7e4836-f4c7-481d-8c5a-9e627ec555c1/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_4a7e4836-f4c7-481d-8c5a-9e627ec555c1/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_4a7e4836-f4c7-481d-8c5a-9e627ec555c1/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-ext3/derefAfterFree2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_4a7e4836-f4c7-481d-8c5a-9e627ec555c1/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_4a7e4836-f4c7-481d-8c5a-9e627ec555c1/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 32bit --witnessprinter.graph.data.programhash 44834c55142a76240cb3980fc2bb6f5aeaa27c83 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref) --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-11-15 20:37:45,424 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-15 20:37:45,425 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-15 20:37:45,435 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-15 20:37:45,435 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-15 20:37:45,436 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-15 20:37:45,438 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-15 20:37:45,439 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-15 20:37:45,441 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-15 20:37:45,442 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-15 20:37:45,443 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-15 20:37:45,444 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-15 20:37:45,444 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-15 20:37:45,445 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-15 20:37:45,446 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-15 20:37:45,447 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-15 20:37:45,447 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-15 20:37:45,448 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-15 20:37:45,450 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-15 20:37:45,451 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-15 20:37:45,453 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-15 20:37:45,454 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-15 20:37:45,455 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-15 20:37:45,455 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-15 20:37:45,458 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-15 20:37:45,458 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-15 20:37:45,458 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-15 20:37:45,459 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-15 20:37:45,459 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-15 20:37:45,460 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-15 20:37:45,460 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-15 20:37:45,461 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-15 20:37:45,462 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-15 20:37:45,462 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-15 20:37:45,463 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-15 20:37:45,464 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-15 20:37:45,464 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-15 20:37:45,464 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-15 20:37:45,465 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-15 20:37:45,465 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-15 20:37:45,466 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-15 20:37:45,467 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_4a7e4836-f4c7-481d-8c5a-9e627ec555c1/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2019-11-15 20:37:45,479 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-15 20:37:45,479 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-15 20:37:45,480 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-15 20:37:45,481 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-15 20:37:45,481 INFO L138 SettingsManager]: * Use SBE=true [2019-11-15 20:37:45,481 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-15 20:37:45,481 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-15 20:37:45,482 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-15 20:37:45,482 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-15 20:37:45,482 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-15 20:37:45,482 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-15 20:37:45,483 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-11-15 20:37:45,483 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-11-15 20:37:45,483 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-11-15 20:37:45,483 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-15 20:37:45,484 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-15 20:37:45,484 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-15 20:37:45,484 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-15 20:37:45,484 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-15 20:37:45,485 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-15 20:37:45,485 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-15 20:37:45,485 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-15 20:37:45,485 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-15 20:37:45,486 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-15 20:37:45,486 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-15 20:37:45,486 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-15 20:37:45,486 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_4a7e4836-f4c7-481d-8c5a-9e627ec555c1/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 -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 44834c55142a76240cb3980fc2bb6f5aeaa27c83 [2019-11-15 20:37:45,511 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-15 20:37:45,520 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-15 20:37:45,523 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-15 20:37:45,525 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-15 20:37:45,525 INFO L275 PluginConnector]: CDTParser initialized [2019-11-15 20:37:45,526 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_4a7e4836-f4c7-481d-8c5a-9e627ec555c1/bin/uautomizer/../../sv-benchmarks/c/memsafety-ext3/derefAfterFree2.c [2019-11-15 20:37:45,576 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_4a7e4836-f4c7-481d-8c5a-9e627ec555c1/bin/uautomizer/data/da0215555/589328501bdf473698f3ef29263c419c/FLAG9572fedf0 [2019-11-15 20:37:45,985 INFO L306 CDTParser]: Found 1 translation units. [2019-11-15 20:37:45,985 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_4a7e4836-f4c7-481d-8c5a-9e627ec555c1/sv-benchmarks/c/memsafety-ext3/derefAfterFree2.c [2019-11-15 20:37:45,992 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_4a7e4836-f4c7-481d-8c5a-9e627ec555c1/bin/uautomizer/data/da0215555/589328501bdf473698f3ef29263c419c/FLAG9572fedf0 [2019-11-15 20:37:46,385 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_4a7e4836-f4c7-481d-8c5a-9e627ec555c1/bin/uautomizer/data/da0215555/589328501bdf473698f3ef29263c419c [2019-11-15 20:37:46,388 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-15 20:37:46,389 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-15 20:37:46,390 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-15 20:37:46,390 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-15 20:37:46,393 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-15 20:37:46,393 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 08:37:46" (1/1) ... [2019-11-15 20:37:46,396 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f8f4b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:37:46, skipping insertion in model container [2019-11-15 20:37:46,396 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 08:37:46" (1/1) ... [2019-11-15 20:37:46,402 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-15 20:37:46,413 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-15 20:37:46,603 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 20:37:46,617 INFO L188 MainTranslator]: Completed pre-run [2019-11-15 20:37:46,639 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 20:37:46,652 INFO L192 MainTranslator]: Completed translation [2019-11-15 20:37:46,652 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:37:46 WrapperNode [2019-11-15 20:37:46,652 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-15 20:37:46,653 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-15 20:37:46,653 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-15 20:37:46,653 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-15 20:37:46,664 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:37:46" (1/1) ... [2019-11-15 20:37:46,665 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:37:46" (1/1) ... [2019-11-15 20:37:46,671 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:37:46" (1/1) ... [2019-11-15 20:37:46,671 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:37:46" (1/1) ... [2019-11-15 20:37:46,676 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:37:46" (1/1) ... [2019-11-15 20:37:46,679 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:37:46" (1/1) ... [2019-11-15 20:37:46,680 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:37:46" (1/1) ... [2019-11-15 20:37:46,682 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-15 20:37:46,682 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-15 20:37:46,682 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-15 20:37:46,682 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-15 20:37:46,683 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:37:46" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4a7e4836-f4c7-481d-8c5a-9e627ec555c1/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 [2019-11-15 20:37:46,726 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-15 20:37:46,726 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-15 20:37:46,726 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-15 20:37:46,726 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-15 20:37:46,726 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-15 20:37:46,727 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-15 20:37:46,727 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-15 20:37:46,727 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-15 20:37:46,727 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-15 20:37:46,727 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-15 20:37:46,727 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-15 20:37:46,728 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-15 20:37:46,900 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-15 20:37:46,900 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-11-15 20:37:46,901 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 08:37:46 BoogieIcfgContainer [2019-11-15 20:37:46,901 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-15 20:37:46,902 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-15 20:37:46,902 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-15 20:37:46,905 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-15 20:37:46,905 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.11 08:37:46" (1/3) ... [2019-11-15 20:37:46,908 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e955f8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 08:37:46, skipping insertion in model container [2019-11-15 20:37:46,908 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:37:46" (2/3) ... [2019-11-15 20:37:46,908 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e955f8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 08:37:46, skipping insertion in model container [2019-11-15 20:37:46,908 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 08:37:46" (3/3) ... [2019-11-15 20:37:46,910 INFO L109 eAbstractionObserver]: Analyzing ICFG derefAfterFree2.c [2019-11-15 20:37:46,918 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-15 20:37:46,924 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2019-11-15 20:37:46,938 INFO L249 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2019-11-15 20:37:46,968 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-15 20:37:46,968 INFO L374 AbstractCegarLoop]: Hoare is false [2019-11-15 20:37:46,968 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-15 20:37:46,969 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-15 20:37:46,969 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-15 20:37:46,969 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-15 20:37:46,969 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-15 20:37:46,969 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-15 20:37:46,987 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2019-11-15 20:37:46,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-15 20:37:46,995 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 20:37:46,996 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 20:37:46,998 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr5ENSURES_VIOLATIONMEMORY_LEAK, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr3ASSERT_VIOLATIONMEMORY_FREE]=== [2019-11-15 20:37:47,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:37:47,002 INFO L82 PathProgramCache]: Analyzing trace with hash 868112163, now seen corresponding path program 1 times [2019-11-15 20:37:47,008 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:37:47,008 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131061162] [2019-11-15 20:37:47,008 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:37:47,008 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:37:47,008 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:37:47,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:37:47,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:37:47,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:37:47,225 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131061162] [2019-11-15 20:37:47,226 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 20:37:47,226 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-15 20:37:47,227 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842566756] [2019-11-15 20:37:47,230 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-15 20:37:47,231 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 20:37:47,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-15 20:37:47,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-15 20:37:47,245 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 4 states. [2019-11-15 20:37:47,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 20:37:47,337 INFO L93 Difference]: Finished difference Result 29 states and 30 transitions. [2019-11-15 20:37:47,338 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-15 20:37:47,339 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2019-11-15 20:37:47,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 20:37:47,347 INFO L225 Difference]: With dead ends: 29 [2019-11-15 20:37:47,347 INFO L226 Difference]: Without dead ends: 26 [2019-11-15 20:37:47,349 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-15 20:37:47,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-11-15 20:37:47,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2019-11-15 20:37:47,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-11-15 20:37:47,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2019-11-15 20:37:47,380 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 8 [2019-11-15 20:37:47,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 20:37:47,381 INFO L462 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2019-11-15 20:37:47,381 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-15 20:37:47,381 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2019-11-15 20:37:47,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-15 20:37:47,386 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 20:37:47,386 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 20:37:47,386 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr5ENSURES_VIOLATIONMEMORY_LEAK, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr3ASSERT_VIOLATIONMEMORY_FREE]=== [2019-11-15 20:37:47,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:37:47,387 INFO L82 PathProgramCache]: Analyzing trace with hash 868112162, now seen corresponding path program 1 times [2019-11-15 20:37:47,388 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:37:47,388 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816782127] [2019-11-15 20:37:47,388 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:37:47,388 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:37:47,388 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:37:47,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:37:47,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:37:47,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:37:47,457 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816782127] [2019-11-15 20:37:47,457 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 20:37:47,457 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-15 20:37:47,458 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019356859] [2019-11-15 20:37:47,459 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-15 20:37:47,459 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 20:37:47,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-15 20:37:47,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-15 20:37:47,460 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand 4 states. [2019-11-15 20:37:47,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 20:37:47,538 INFO L93 Difference]: Finished difference Result 30 states and 31 transitions. [2019-11-15 20:37:47,540 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-15 20:37:47,540 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2019-11-15 20:37:47,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 20:37:47,541 INFO L225 Difference]: With dead ends: 30 [2019-11-15 20:37:47,541 INFO L226 Difference]: Without dead ends: 30 [2019-11-15 20:37:47,542 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-15 20:37:47,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2019-11-15 20:37:47,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 26. [2019-11-15 20:37:47,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-11-15 20:37:47,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2019-11-15 20:37:47,547 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 8 [2019-11-15 20:37:47,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 20:37:47,547 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2019-11-15 20:37:47,547 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-15 20:37:47,547 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2019-11-15 20:37:47,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-15 20:37:47,548 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 20:37:47,548 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 20:37:47,548 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr5ENSURES_VIOLATIONMEMORY_LEAK, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr3ASSERT_VIOLATIONMEMORY_FREE]=== [2019-11-15 20:37:47,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:37:47,549 INFO L82 PathProgramCache]: Analyzing trace with hash -258436314, now seen corresponding path program 1 times [2019-11-15 20:37:47,549 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:37:47,549 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26781591] [2019-11-15 20:37:47,549 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:37:47,550 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:37:47,550 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:37:47,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:37:47,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:37:47,674 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:37:47,674 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26781591] [2019-11-15 20:37:47,675 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 20:37:47,675 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-15 20:37:47,675 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60982859] [2019-11-15 20:37:47,675 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-15 20:37:47,675 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 20:37:47,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-15 20:37:47,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-11-15 20:37:47,676 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand 7 states. [2019-11-15 20:37:47,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 20:37:47,742 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2019-11-15 20:37:47,743 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-15 20:37:47,743 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2019-11-15 20:37:47,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 20:37:47,744 INFO L225 Difference]: With dead ends: 25 [2019-11-15 20:37:47,744 INFO L226 Difference]: Without dead ends: 25 [2019-11-15 20:37:47,744 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-11-15 20:37:47,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2019-11-15 20:37:47,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2019-11-15 20:37:47,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-11-15 20:37:47,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2019-11-15 20:37:47,748 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 12 [2019-11-15 20:37:47,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 20:37:47,748 INFO L462 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2019-11-15 20:37:47,749 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-15 20:37:47,749 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2019-11-15 20:37:47,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-15 20:37:47,749 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 20:37:47,749 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 20:37:47,753 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr5ENSURES_VIOLATIONMEMORY_LEAK, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr3ASSERT_VIOLATIONMEMORY_FREE]=== [2019-11-15 20:37:47,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:37:47,754 INFO L82 PathProgramCache]: Analyzing trace with hash 578407498, now seen corresponding path program 1 times [2019-11-15 20:37:47,754 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:37:47,754 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537471745] [2019-11-15 20:37:47,754 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:37:47,754 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:37:47,755 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:37:47,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:37:47,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:37:47,799 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:37:47,799 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537471745] [2019-11-15 20:37:47,799 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1789089164] [2019-11-15 20:37:47,800 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4a7e4836-f4c7-481d-8c5a-9e627ec555c1/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 20:37:47,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:37:47,851 INFO L256 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-15 20:37:47,856 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 20:37:47,891 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:37:47,892 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 20:37:47,892 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 6 [2019-11-15 20:37:47,892 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459754169] [2019-11-15 20:37:47,893 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-15 20:37:47,893 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 20:37:47,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-15 20:37:47,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-11-15 20:37:47,894 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand 6 states. [2019-11-15 20:37:47,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 20:37:47,952 INFO L93 Difference]: Finished difference Result 29 states and 31 transitions. [2019-11-15 20:37:47,953 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-15 20:37:47,953 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2019-11-15 20:37:47,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 20:37:47,954 INFO L225 Difference]: With dead ends: 29 [2019-11-15 20:37:47,954 INFO L226 Difference]: Without dead ends: 29 [2019-11-15 20:37:47,954 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-11-15 20:37:47,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-11-15 20:37:47,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2019-11-15 20:37:47,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-11-15 20:37:47,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2019-11-15 20:37:47,958 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 13 [2019-11-15 20:37:47,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 20:37:47,959 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2019-11-15 20:37:47,959 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-15 20:37:47,959 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2019-11-15 20:37:47,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-15 20:37:47,959 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 20:37:47,960 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 20:37:48,165 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 20:37:48,166 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr5ENSURES_VIOLATIONMEMORY_LEAK, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr3ASSERT_VIOLATIONMEMORY_FREE]=== [2019-11-15 20:37:48,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:37:48,167 INFO L82 PathProgramCache]: Analyzing trace with hash -977036761, now seen corresponding path program 2 times [2019-11-15 20:37:48,169 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:37:48,169 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947522671] [2019-11-15 20:37:48,170 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:37:48,170 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:37:48,170 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:37:48,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:37:48,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:37:48,260 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:37:48,261 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947522671] [2019-11-15 20:37:48,261 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [995369610] [2019-11-15 20:37:48,261 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4a7e4836-f4c7-481d-8c5a-9e627ec555c1/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 20:37:48,299 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-15 20:37:48,299 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 20:37:48,300 INFO L256 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-15 20:37:48,301 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 20:37:48,318 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:37:48,319 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 20:37:48,319 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 7 [2019-11-15 20:37:48,319 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914713879] [2019-11-15 20:37:48,319 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-15 20:37:48,320 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 20:37:48,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-15 20:37:48,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-11-15 20:37:48,320 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand 7 states. [2019-11-15 20:37:48,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 20:37:48,382 INFO L93 Difference]: Finished difference Result 33 states and 35 transitions. [2019-11-15 20:37:48,383 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-15 20:37:48,383 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 17 [2019-11-15 20:37:48,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 20:37:48,384 INFO L225 Difference]: With dead ends: 33 [2019-11-15 20:37:48,384 INFO L226 Difference]: Without dead ends: 33 [2019-11-15 20:37:48,384 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-11-15 20:37:48,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2019-11-15 20:37:48,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 32. [2019-11-15 20:37:48,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2019-11-15 20:37:48,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 34 transitions. [2019-11-15 20:37:48,388 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 34 transitions. Word has length 17 [2019-11-15 20:37:48,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 20:37:48,389 INFO L462 AbstractCegarLoop]: Abstraction has 32 states and 34 transitions. [2019-11-15 20:37:48,389 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-15 20:37:48,389 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 34 transitions. [2019-11-15 20:37:48,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-11-15 20:37:48,390 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 20:37:48,390 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 20:37:48,590 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 20:37:48,591 INFO L410 AbstractCegarLoop]: === Iteration 6 === [mainErr5ENSURES_VIOLATIONMEMORY_LEAK, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr3ASSERT_VIOLATIONMEMORY_FREE]=== [2019-11-15 20:37:48,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:37:48,591 INFO L82 PathProgramCache]: Analyzing trace with hash -242667132, now seen corresponding path program 3 times [2019-11-15 20:37:48,591 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:37:48,592 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328436112] [2019-11-15 20:37:48,592 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:37:48,592 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:37:48,592 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:37:48,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:37:48,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:37:48,675 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:37:48,675 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328436112] [2019-11-15 20:37:48,675 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1587927774] [2019-11-15 20:37:48,675 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4a7e4836-f4c7-481d-8c5a-9e627ec555c1/bin/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 20:37:48,728 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-11-15 20:37:48,729 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 20:37:48,729 INFO L256 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-15 20:37:48,731 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 20:37:48,750 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:37:48,750 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 20:37:48,750 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 8 [2019-11-15 20:37:48,751 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382777311] [2019-11-15 20:37:48,751 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-15 20:37:48,751 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 20:37:48,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-15 20:37:48,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2019-11-15 20:37:48,752 INFO L87 Difference]: Start difference. First operand 32 states and 34 transitions. Second operand 8 states. [2019-11-15 20:37:48,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 20:37:48,815 INFO L93 Difference]: Finished difference Result 37 states and 39 transitions. [2019-11-15 20:37:48,815 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-15 20:37:48,815 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 21 [2019-11-15 20:37:48,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 20:37:48,816 INFO L225 Difference]: With dead ends: 37 [2019-11-15 20:37:48,816 INFO L226 Difference]: Without dead ends: 37 [2019-11-15 20:37:48,816 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2019-11-15 20:37:48,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2019-11-15 20:37:48,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 36. [2019-11-15 20:37:48,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-11-15 20:37:48,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2019-11-15 20:37:48,821 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 21 [2019-11-15 20:37:48,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 20:37:48,821 INFO L462 AbstractCegarLoop]: Abstraction has 36 states and 38 transitions. [2019-11-15 20:37:48,821 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-15 20:37:48,821 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 38 transitions. [2019-11-15 20:37:48,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-11-15 20:37:48,822 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 20:37:48,822 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 20:37:49,022 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 20:37:49,023 INFO L410 AbstractCegarLoop]: === Iteration 7 === [mainErr5ENSURES_VIOLATIONMEMORY_LEAK, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr3ASSERT_VIOLATIONMEMORY_FREE]=== [2019-11-15 20:37:49,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:37:49,023 INFO L82 PathProgramCache]: Analyzing trace with hash 130667105, now seen corresponding path program 4 times [2019-11-15 20:37:49,023 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:37:49,023 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239082823] [2019-11-15 20:37:49,024 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:37:49,024 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:37:49,024 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:37:49,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:37:49,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:37:49,115 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:37:49,116 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239082823] [2019-11-15 20:37:49,116 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1260682095] [2019-11-15 20:37:49,116 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4a7e4836-f4c7-481d-8c5a-9e627ec555c1/bin/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 20:37:49,163 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-15 20:37:49,164 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 20:37:49,165 INFO L256 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-15 20:37:49,166 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 20:37:49,187 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:37:49,187 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 20:37:49,187 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 9 [2019-11-15 20:37:49,188 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502468423] [2019-11-15 20:37:49,188 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-15 20:37:49,188 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 20:37:49,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-15 20:37:49,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2019-11-15 20:37:49,189 INFO L87 Difference]: Start difference. First operand 36 states and 38 transitions. Second operand 9 states. [2019-11-15 20:37:49,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 20:37:49,257 INFO L93 Difference]: Finished difference Result 41 states and 43 transitions. [2019-11-15 20:37:49,258 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-15 20:37:49,258 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2019-11-15 20:37:49,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 20:37:49,259 INFO L225 Difference]: With dead ends: 41 [2019-11-15 20:37:49,259 INFO L226 Difference]: Without dead ends: 41 [2019-11-15 20:37:49,259 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2019-11-15 20:37:49,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2019-11-15 20:37:49,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 40. [2019-11-15 20:37:49,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-11-15 20:37:49,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 42 transitions. [2019-11-15 20:37:49,264 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 42 transitions. Word has length 25 [2019-11-15 20:37:49,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 20:37:49,264 INFO L462 AbstractCegarLoop]: Abstraction has 40 states and 42 transitions. [2019-11-15 20:37:49,264 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-15 20:37:49,264 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 42 transitions. [2019-11-15 20:37:49,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-11-15 20:37:49,265 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 20:37:49,265 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 20:37:49,469 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 20:37:49,469 INFO L410 AbstractCegarLoop]: === Iteration 8 === [mainErr5ENSURES_VIOLATIONMEMORY_LEAK, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr3ASSERT_VIOLATIONMEMORY_FREE]=== [2019-11-15 20:37:49,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:37:49,469 INFO L82 PathProgramCache]: Analyzing trace with hash -656098114, now seen corresponding path program 5 times [2019-11-15 20:37:49,470 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:37:49,470 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133316266] [2019-11-15 20:37:49,470 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:37:49,470 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:37:49,470 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:37:49,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:37:49,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:37:49,629 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 13 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:37:49,629 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133316266] [2019-11-15 20:37:49,630 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1937932814] [2019-11-15 20:37:49,630 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4a7e4836-f4c7-481d-8c5a-9e627ec555c1/bin/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 20:37:49,680 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2019-11-15 20:37:49,680 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 20:37:49,681 INFO L256 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-15 20:37:49,682 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 20:37:49,773 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:37:49,773 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 20:37:49,773 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 16 [2019-11-15 20:37:49,773 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027970172] [2019-11-15 20:37:49,774 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-11-15 20:37:49,774 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 20:37:49,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-11-15 20:37:49,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=153, Unknown=0, NotChecked=0, Total=240 [2019-11-15 20:37:49,776 INFO L87 Difference]: Start difference. First operand 40 states and 42 transitions. Second operand 16 states. [2019-11-15 20:37:50,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 20:37:50,243 INFO L93 Difference]: Finished difference Result 55 states and 60 transitions. [2019-11-15 20:37:50,244 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-11-15 20:37:50,244 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 29 [2019-11-15 20:37:50,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 20:37:50,246 INFO L225 Difference]: With dead ends: 55 [2019-11-15 20:37:50,246 INFO L226 Difference]: Without dead ends: 55 [2019-11-15 20:37:50,247 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=218, Invalid=432, Unknown=0, NotChecked=0, Total=650 [2019-11-15 20:37:50,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2019-11-15 20:37:50,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2019-11-15 20:37:50,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2019-11-15 20:37:50,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 60 transitions. [2019-11-15 20:37:50,254 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 60 transitions. Word has length 29 [2019-11-15 20:37:50,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 20:37:50,254 INFO L462 AbstractCegarLoop]: Abstraction has 55 states and 60 transitions. [2019-11-15 20:37:50,254 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-11-15 20:37:50,254 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 60 transitions. [2019-11-15 20:37:50,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-11-15 20:37:50,255 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 20:37:50,255 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 20:37:50,458 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 20:37:50,459 INFO L410 AbstractCegarLoop]: === Iteration 9 === [mainErr5ENSURES_VIOLATIONMEMORY_LEAK, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr3ASSERT_VIOLATIONMEMORY_FREE]=== [2019-11-15 20:37:50,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:37:50,459 INFO L82 PathProgramCache]: Analyzing trace with hash 851171268, now seen corresponding path program 1 times [2019-11-15 20:37:50,459 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:37:50,459 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086747725] [2019-11-15 20:37:50,459 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:37:50,459 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:37:50,460 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:37:50,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:37:50,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:37:50,527 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2019-11-15 20:37:50,527 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086747725] [2019-11-15 20:37:50,527 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 20:37:50,527 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-15 20:37:50,527 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833218165] [2019-11-15 20:37:50,528 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-15 20:37:50,528 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 20:37:50,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-15 20:37:50,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-15 20:37:50,528 INFO L87 Difference]: Start difference. First operand 55 states and 60 transitions. Second operand 4 states. [2019-11-15 20:37:50,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 20:37:50,573 INFO L93 Difference]: Finished difference Result 54 states and 59 transitions. [2019-11-15 20:37:50,574 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-15 20:37:50,574 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2019-11-15 20:37:50,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 20:37:50,575 INFO L225 Difference]: With dead ends: 54 [2019-11-15 20:37:50,575 INFO L226 Difference]: Without dead ends: 54 [2019-11-15 20:37:50,575 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-15 20:37:50,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2019-11-15 20:37:50,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2019-11-15 20:37:50,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2019-11-15 20:37:50,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 59 transitions. [2019-11-15 20:37:50,580 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 59 transitions. Word has length 31 [2019-11-15 20:37:50,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 20:37:50,580 INFO L462 AbstractCegarLoop]: Abstraction has 54 states and 59 transitions. [2019-11-15 20:37:50,580 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-15 20:37:50,580 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 59 transitions. [2019-11-15 20:37:50,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2019-11-15 20:37:50,581 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 20:37:50,581 INFO L380 BasicCegarLoop]: trace histogram [7, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 20:37:50,581 INFO L410 AbstractCegarLoop]: === Iteration 10 === [mainErr5ENSURES_VIOLATIONMEMORY_LEAK, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr3ASSERT_VIOLATIONMEMORY_FREE]=== [2019-11-15 20:37:50,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:37:50,586 INFO L82 PathProgramCache]: Analyzing trace with hash 1037842699, now seen corresponding path program 1 times [2019-11-15 20:37:50,586 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:37:50,586 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339168172] [2019-11-15 20:37:50,586 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:37:50,586 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:37:50,587 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:37:50,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 20:37:50,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 20:37:50,656 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 20:37:50,656 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-11-15 20:37:50,684 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.11 08:37:50 BoogieIcfgContainer [2019-11-15 20:37:50,684 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-15 20:37:50,684 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-15 20:37:50,684 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-15 20:37:50,685 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-15 20:37:50,685 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 08:37:46" (3/4) ... [2019-11-15 20:37:50,687 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-15 20:37:50,741 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_4a7e4836-f4c7-481d-8c5a-9e627ec555c1/bin/uautomizer/witness.graphml [2019-11-15 20:37:50,742 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-15 20:37:50,744 INFO L168 Benchmark]: Toolchain (without parser) took 4353.99 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.7 MB). Free memory was 950.2 MB in the beginning and 1.1 GB in the end (delta: -127.1 MB). Peak memory consumption was 17.6 MB. Max. memory is 11.5 GB. [2019-11-15 20:37:50,744 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 20:37:50,745 INFO L168 Benchmark]: CACSL2BoogieTranslator took 263.00 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.7 MB). Free memory was 950.2 MB in the beginning and 1.1 GB in the end (delta: -188.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. [2019-11-15 20:37:50,745 INFO L168 Benchmark]: Boogie Preprocessor took 28.99 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. [2019-11-15 20:37:50,746 INFO L168 Benchmark]: RCFGBuilder took 219.60 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: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. [2019-11-15 20:37:50,746 INFO L168 Benchmark]: TraceAbstraction took 3781.74 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 37.2 MB). Peak memory consumption was 37.2 MB. Max. memory is 11.5 GB. [2019-11-15 20:37:50,747 INFO L168 Benchmark]: Witness Printer took 57.42 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2019-11-15 20:37:50,749 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 263.00 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.7 MB). Free memory was 950.2 MB in the beginning and 1.1 GB in the end (delta: -188.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 28.99 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 219.60 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: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3781.74 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 37.2 MB). Peak memory consumption was 37.2 MB. Max. memory is 11.5 GB. * Witness Printer took 57.42 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 9]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L6] int* p = malloc(10 * sizeof(int)); [L8] int i = 0; VAL [i=0, malloc(10 * sizeof(int))={2:0}, p={2:0}] [L8] COND TRUE i < 10 VAL [i=0, malloc(10 * sizeof(int))={2:0}, p={2:0}] [L9] p[i] = 1 VAL [i=0, malloc(10 * sizeof(int))={2:0}, p={2:0}] [L10] COND FALSE !(i == 5) VAL [i=0, malloc(10 * sizeof(int))={2:0}, p={2:0}] [L8] i++ VAL [i=1, malloc(10 * sizeof(int))={2:0}, p={2:0}] [L8] COND TRUE i < 10 VAL [i=1, malloc(10 * sizeof(int))={2:0}, p={2:0}] [L9] p[i] = 1 VAL [i=1, malloc(10 * sizeof(int))={2:0}, p={2:0}] [L10] COND FALSE !(i == 5) VAL [i=1, malloc(10 * sizeof(int))={2:0}, p={2:0}] [L8] i++ VAL [i=2, malloc(10 * sizeof(int))={2:0}, p={2:0}] [L8] COND TRUE i < 10 VAL [i=2, malloc(10 * sizeof(int))={2:0}, p={2:0}] [L9] p[i] = 1 VAL [i=2, malloc(10 * sizeof(int))={2:0}, p={2:0}] [L10] COND FALSE !(i == 5) VAL [i=2, malloc(10 * sizeof(int))={2:0}, p={2:0}] [L8] i++ VAL [i=3, malloc(10 * sizeof(int))={2:0}, p={2:0}] [L8] COND TRUE i < 10 VAL [i=3, malloc(10 * sizeof(int))={2:0}, p={2:0}] [L9] p[i] = 1 VAL [i=3, malloc(10 * sizeof(int))={2:0}, p={2:0}] [L10] COND FALSE !(i == 5) VAL [i=3, malloc(10 * sizeof(int))={2:0}, p={2:0}] [L8] i++ VAL [i=4, malloc(10 * sizeof(int))={2:0}, p={2:0}] [L8] COND TRUE i < 10 VAL [i=4, malloc(10 * sizeof(int))={2:0}, p={2:0}] [L9] p[i] = 1 VAL [i=4, malloc(10 * sizeof(int))={2:0}, p={2:0}] [L10] COND FALSE !(i == 5) VAL [i=4, malloc(10 * sizeof(int))={2:0}, p={2:0}] [L8] i++ VAL [i=5, malloc(10 * sizeof(int))={2:0}, p={2:0}] [L8] COND TRUE i < 10 VAL [i=5, malloc(10 * sizeof(int))={2:0}, p={2:0}] [L9] p[i] = 1 VAL [i=5, malloc(10 * sizeof(int))={2:0}, p={2:0}] [L10] COND TRUE i == 5 VAL [i=5, malloc(10 * sizeof(int))={2:0}, p={2:0}] [L11] free(p) VAL [i=5, malloc(10 * sizeof(int))={2:0}, p={2:0}] [L11] free(p) VAL [i=5, malloc(10 * sizeof(int))={2:0}, p={2:0}] [L11] free(p) [L8] i++ VAL [i=6, malloc(10 * sizeof(int))={2:0}, p={2:0}] [L8] COND TRUE i < 10 VAL [i=6, malloc(10 * sizeof(int))={2:0}, p={2:0}] [L9] p[i] = 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 24 locations, 6 error locations. Result: UNSAFE, OverallTime: 3.7s, OverallIterations: 10, TraceHistogramMax: 7, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 112 SDtfs, 176 SDslu, 252 SDs, 0 SdLazy, 421 SolverSat, 47 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 175 GetRequests, 117 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=55occurred in iteration=8, 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, 9 MinimizatonAttempts, 11 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 304 NumberOfCodeBlocks, 304 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 255 ConstructedInterpolants, 0 QuantifiedInterpolants, 18153 SizeOfPredicates, 5 NumberOfNonLiveVariables, 360 ConjunctsInSsa, 25 ConjunctsInUnsatCore, 14 InterpolantComputations, 4 PerfectInterpolantSequences, 70/247 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 incorrect! Received shutdown request...