./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength4.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_ba661145-3dbb-424f-a1ba-ea26f481e846/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_ba661145-3dbb-424f-a1ba-ea26f481e846/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_ba661145-3dbb-424f-a1ba-ea26f481e846/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_ba661145-3dbb-424f-a1ba-ea26f481e846/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength4.c -s /tmp/vcloud-vcloud-master/worker/run_dir_ba661145-3dbb-424f-a1ba-ea26f481e846/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_ba661145-3dbb-424f-a1ba-ea26f481e846/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 97fe3d28a1849ecc88958d9d302f4fb4c5dbb992 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-12-07 10:25:57,111 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 10:25:57,112 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 10:25:57,120 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 10:25:57,120 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 10:25:57,121 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 10:25:57,122 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 10:25:57,123 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 10:25:57,124 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 10:25:57,125 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 10:25:57,126 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 10:25:57,126 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 10:25:57,126 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 10:25:57,127 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 10:25:57,128 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 10:25:57,129 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 10:25:57,129 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 10:25:57,130 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 10:25:57,131 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 10:25:57,133 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 10:25:57,134 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 10:25:57,135 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 10:25:57,136 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 10:25:57,136 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 10:25:57,138 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 10:25:57,138 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 10:25:57,138 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 10:25:57,139 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 10:25:57,139 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 10:25:57,139 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 10:25:57,140 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 10:25:57,140 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 10:25:57,140 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 10:25:57,141 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 10:25:57,141 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 10:25:57,142 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 10:25:57,142 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 10:25:57,142 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 10:25:57,142 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 10:25:57,143 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 10:25:57,143 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 10:25:57,144 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_ba661145-3dbb-424f-a1ba-ea26f481e846/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2019-12-07 10:25:57,153 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 10:25:57,153 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 10:25:57,154 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 10:25:57,154 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 10:25:57,154 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 10:25:57,154 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 10:25:57,154 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 10:25:57,154 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-12-07 10:25:57,154 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 10:25:57,154 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 10:25:57,155 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 10:25:57,155 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-12-07 10:25:57,155 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-12-07 10:25:57,155 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-12-07 10:25:57,155 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 10:25:57,155 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-12-07 10:25:57,155 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 10:25:57,155 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 10:25:57,155 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 10:25:57,156 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 10:25:57,156 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 10:25:57,156 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 10:25:57,156 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 10:25:57,156 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 10:25:57,156 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 10:25:57,156 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 10:25:57,156 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 10:25:57,157 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 10:25:57,157 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_ba661145-3dbb-424f-a1ba-ea26f481e846/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 -> 97fe3d28a1849ecc88958d9d302f4fb4c5dbb992 [2019-12-07 10:25:57,257 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 10:25:57,267 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 10:25:57,270 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 10:25:57,272 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 10:25:57,272 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 10:25:57,272 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_ba661145-3dbb-424f-a1ba-ea26f481e846/bin/uautomizer/../../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength4.c [2019-12-07 10:25:57,315 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ba661145-3dbb-424f-a1ba-ea26f481e846/bin/uautomizer/data/d355a5b46/6c14032ee0424b969d924211a2999b4c/FLAG2b451c484 [2019-12-07 10:25:57,756 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 10:25:57,756 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_ba661145-3dbb-424f-a1ba-ea26f481e846/sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength4.c [2019-12-07 10:25:57,760 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ba661145-3dbb-424f-a1ba-ea26f481e846/bin/uautomizer/data/d355a5b46/6c14032ee0424b969d924211a2999b4c/FLAG2b451c484 [2019-12-07 10:25:57,768 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_ba661145-3dbb-424f-a1ba-ea26f481e846/bin/uautomizer/data/d355a5b46/6c14032ee0424b969d924211a2999b4c [2019-12-07 10:25:57,770 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 10:25:57,771 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-12-07 10:25:57,772 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 10:25:57,772 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 10:25:57,774 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 10:25:57,774 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 10:25:57" (1/1) ... [2019-12-07 10:25:57,776 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21a99e56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:25:57, skipping insertion in model container [2019-12-07 10:25:57,776 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 10:25:57" (1/1) ... [2019-12-07 10:25:57,781 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 10:25:57,791 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 10:25:57,920 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 10:25:57,926 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 10:25:57,937 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 10:25:57,947 INFO L208 MainTranslator]: Completed translation [2019-12-07 10:25:57,947 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:25:57 WrapperNode [2019-12-07 10:25:57,947 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 10:25:57,948 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 10:25:57,948 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 10:25:57,948 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 10:25:57,956 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:25:57" (1/1) ... [2019-12-07 10:25:57,956 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:25:57" (1/1) ... [2019-12-07 10:25:57,961 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:25:57" (1/1) ... [2019-12-07 10:25:57,961 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:25:57" (1/1) ... [2019-12-07 10:25:57,966 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:25:57" (1/1) ... [2019-12-07 10:25:57,969 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:25:57" (1/1) ... [2019-12-07 10:25:57,970 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:25:57" (1/1) ... [2019-12-07 10:25:57,971 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 10:25:57,971 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 10:25:57,971 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 10:25:57,971 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 10:25:57,972 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:25:57" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ba661145-3dbb-424f-a1ba-ea26f481e846/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 [2019-12-07 10:25:58,011 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-12-07 10:25:58,011 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 10:25:58,011 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2019-12-07 10:25:58,011 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-12-07 10:25:58,011 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2019-12-07 10:25:58,011 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-12-07 10:25:58,011 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-12-07 10:25:58,011 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 10:25:58,012 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-07 10:25:58,012 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 10:25:58,012 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-12-07 10:25:58,012 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 10:25:58,164 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 10:25:58,165 INFO L287 CfgBuilder]: Removed 3 assume(true) statements. [2019-12-07 10:25:58,165 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 10:25:58 BoogieIcfgContainer [2019-12-07 10:25:58,165 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 10:25:58,166 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 10:25:58,166 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 10:25:58,168 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 10:25:58,168 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 10:25:57" (1/3) ... [2019-12-07 10:25:58,169 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@157108b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 10:25:58, skipping insertion in model container [2019-12-07 10:25:58,169 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:25:57" (2/3) ... [2019-12-07 10:25:58,169 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@157108b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 10:25:58, skipping insertion in model container [2019-12-07 10:25:58,169 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 10:25:58" (3/3) ... [2019-12-07 10:25:58,170 INFO L109 eAbstractionObserver]: Analyzing ICFG ArraysOfVariableLength4.c [2019-12-07 10:25:58,176 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 10:25:58,180 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 8 error locations. [2019-12-07 10:25:58,187 INFO L249 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2019-12-07 10:25:58,199 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 10:25:58,199 INFO L374 AbstractCegarLoop]: Hoare is false [2019-12-07 10:25:58,200 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 10:25:58,200 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 10:25:58,200 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 10:25:58,200 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 10:25:58,200 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 10:25:58,200 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 10:25:58,211 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2019-12-07 10:25:58,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-07 10:25:58,218 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 10:25:58,218 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 10:25:58,218 INFO L410 AbstractCegarLoop]: === Iteration 1 === [fooErr1REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-12-07 10:25:58,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 10:25:58,222 INFO L82 PathProgramCache]: Analyzing trace with hash 1909189377, now seen corresponding path program 1 times [2019-12-07 10:25:58,228 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 10:25:58,228 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438539317] [2019-12-07 10:25:58,228 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 10:25:58,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 10:25:58,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 10:25:58,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 10:25:58,347 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438539317] [2019-12-07 10:25:58,347 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 10:25:58,348 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-07 10:25:58,348 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258786246] [2019-12-07 10:25:58,351 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 10:25:58,352 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 10:25:58,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 10:25:58,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 10:25:58,362 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 4 states. [2019-12-07 10:25:58,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 10:25:58,490 INFO L93 Difference]: Finished difference Result 58 states and 63 transitions. [2019-12-07 10:25:58,490 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 10:25:58,491 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2019-12-07 10:25:58,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 10:25:58,497 INFO L225 Difference]: With dead ends: 58 [2019-12-07 10:25:58,498 INFO L226 Difference]: Without dead ends: 54 [2019-12-07 10:25:58,499 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-07 10:25:58,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2019-12-07 10:25:58,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 39. [2019-12-07 10:25:58,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2019-12-07 10:25:58,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2019-12-07 10:25:58,533 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 10 [2019-12-07 10:25:58,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 10:25:58,533 INFO L462 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2019-12-07 10:25:58,533 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 10:25:58,533 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2019-12-07 10:25:58,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-07 10:25:58,534 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 10:25:58,534 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 10:25:58,534 INFO L410 AbstractCegarLoop]: === Iteration 2 === [fooErr1REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-12-07 10:25:58,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 10:25:58,534 INFO L82 PathProgramCache]: Analyzing trace with hash -941983064, now seen corresponding path program 1 times [2019-12-07 10:25:58,535 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 10:25:58,535 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875095917] [2019-12-07 10:25:58,535 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 10:25:58,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 10:25:58,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 10:25:58,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 10:25:58,584 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875095917] [2019-12-07 10:25:58,585 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 10:25:58,585 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 10:25:58,585 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022880405] [2019-12-07 10:25:58,586 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 10:25:58,586 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 10:25:58,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 10:25:58,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 10:25:58,587 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand 4 states. [2019-12-07 10:25:58,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 10:25:58,662 INFO L93 Difference]: Finished difference Result 49 states and 53 transitions. [2019-12-07 10:25:58,662 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 10:25:58,662 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-12-07 10:25:58,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 10:25:58,665 INFO L225 Difference]: With dead ends: 49 [2019-12-07 10:25:58,665 INFO L226 Difference]: Without dead ends: 49 [2019-12-07 10:25:58,665 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-07 10:25:58,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2019-12-07 10:25:58,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 41. [2019-12-07 10:25:58,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2019-12-07 10:25:58,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2019-12-07 10:25:58,671 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 11 [2019-12-07 10:25:58,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 10:25:58,672 INFO L462 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2019-12-07 10:25:58,672 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 10:25:58,672 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2019-12-07 10:25:58,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-12-07 10:25:58,672 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 10:25:58,672 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 10:25:58,673 INFO L410 AbstractCegarLoop]: === Iteration 3 === [fooErr1REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-12-07 10:25:58,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 10:25:58,673 INFO L82 PathProgramCache]: Analyzing trace with hash 863296133, now seen corresponding path program 1 times [2019-12-07 10:25:58,673 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 10:25:58,673 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385053453] [2019-12-07 10:25:58,673 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 10:25:58,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 10:25:58,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 10:25:58,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 10:25:58,723 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385053453] [2019-12-07 10:25:58,723 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 10:25:58,723 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-12-07 10:25:58,724 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627258729] [2019-12-07 10:25:58,724 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-07 10:25:58,724 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 10:25:58,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-07 10:25:58,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-12-07 10:25:58,725 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand 6 states. [2019-12-07 10:25:58,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 10:25:58,795 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions. [2019-12-07 10:25:58,795 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 10:25:58,796 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2019-12-07 10:25:58,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 10:25:58,796 INFO L225 Difference]: With dead ends: 40 [2019-12-07 10:25:58,796 INFO L226 Difference]: Without dead ends: 40 [2019-12-07 10:25:58,797 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-12-07 10:25:58,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2019-12-07 10:25:58,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2019-12-07 10:25:58,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-12-07 10:25:58,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2019-12-07 10:25:58,800 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 12 [2019-12-07 10:25:58,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 10:25:58,801 INFO L462 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2019-12-07 10:25:58,801 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-07 10:25:58,801 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2019-12-07 10:25:58,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-12-07 10:25:58,801 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 10:25:58,801 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 10:25:58,801 INFO L410 AbstractCegarLoop]: === Iteration 4 === [fooErr1REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-12-07 10:25:58,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 10:25:58,802 INFO L82 PathProgramCache]: Analyzing trace with hash 863296134, now seen corresponding path program 1 times [2019-12-07 10:25:58,802 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 10:25:58,802 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498254942] [2019-12-07 10:25:58,802 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 10:25:58,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 10:25:58,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 10:25:58,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 10:25:58,861 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498254942] [2019-12-07 10:25:58,862 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 10:25:58,862 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-12-07 10:25:58,862 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751370865] [2019-12-07 10:25:58,862 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-12-07 10:25:58,862 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 10:25:58,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-12-07 10:25:58,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-12-07 10:25:58,863 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand 7 states. [2019-12-07 10:25:58,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 10:25:58,962 INFO L93 Difference]: Finished difference Result 42 states and 46 transitions. [2019-12-07 10:25:58,962 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-12-07 10:25:58,962 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2019-12-07 10:25:58,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 10:25:58,963 INFO L225 Difference]: With dead ends: 42 [2019-12-07 10:25:58,963 INFO L226 Difference]: Without dead ends: 42 [2019-12-07 10:25:58,963 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2019-12-07 10:25:58,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2019-12-07 10:25:58,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 39. [2019-12-07 10:25:58,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2019-12-07 10:25:58,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2019-12-07 10:25:58,967 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 12 [2019-12-07 10:25:58,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 10:25:58,967 INFO L462 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2019-12-07 10:25:58,967 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-12-07 10:25:58,967 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2019-12-07 10:25:58,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-12-07 10:25:58,968 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 10:25:58,968 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 10:25:58,968 INFO L410 AbstractCegarLoop]: === Iteration 5 === [fooErr1REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-12-07 10:25:58,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 10:25:58,968 INFO L82 PathProgramCache]: Analyzing trace with hash 143250926, now seen corresponding path program 1 times [2019-12-07 10:25:58,968 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 10:25:58,968 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282445671] [2019-12-07 10:25:58,968 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 10:25:58,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 10:25:58,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 10:25:58,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 10:25:59,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 10:25:59,021 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282445671] [2019-12-07 10:25:59,021 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 10:25:59,021 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-12-07 10:25:59,022 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442007300] [2019-12-07 10:25:59,022 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 10:25:59,022 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 10:25:59,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 10:25:59,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-12-07 10:25:59,022 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand 5 states. [2019-12-07 10:25:59,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 10:25:59,096 INFO L93 Difference]: Finished difference Result 45 states and 48 transitions. [2019-12-07 10:25:59,097 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 10:25:59,097 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2019-12-07 10:25:59,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 10:25:59,097 INFO L225 Difference]: With dead ends: 45 [2019-12-07 10:25:59,097 INFO L226 Difference]: Without dead ends: 42 [2019-12-07 10:25:59,098 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-12-07 10:25:59,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2019-12-07 10:25:59,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 39. [2019-12-07 10:25:59,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2019-12-07 10:25:59,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2019-12-07 10:25:59,101 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 15 [2019-12-07 10:25:59,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 10:25:59,101 INFO L462 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2019-12-07 10:25:59,101 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 10:25:59,101 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2019-12-07 10:25:59,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-12-07 10:25:59,102 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 10:25:59,102 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 10:25:59,102 INFO L410 AbstractCegarLoop]: === Iteration 6 === [fooErr1REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-12-07 10:25:59,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 10:25:59,102 INFO L82 PathProgramCache]: Analyzing trace with hash 1623425863, now seen corresponding path program 1 times [2019-12-07 10:25:59,103 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 10:25:59,103 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669743125] [2019-12-07 10:25:59,103 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 10:25:59,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 10:25:59,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 10:25:59,158 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 10:25:59,158 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669743125] [2019-12-07 10:25:59,158 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [731669310] [2019-12-07 10:25:59,159 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ba661145-3dbb-424f-a1ba-ea26f481e846/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 [2019-12-07 10:25:59,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 10:25:59,187 INFO L264 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-07 10:25:59,191 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 10:25:59,217 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 10:25:59,217 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 10:25:59,217 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 3] total 9 [2019-12-07 10:25:59,218 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341395745] [2019-12-07 10:25:59,218 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-12-07 10:25:59,218 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 10:25:59,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-12-07 10:25:59,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2019-12-07 10:25:59,219 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand 10 states. [2019-12-07 10:25:59,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 10:25:59,354 INFO L93 Difference]: Finished difference Result 47 states and 50 transitions. [2019-12-07 10:25:59,354 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-12-07 10:25:59,354 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 16 [2019-12-07 10:25:59,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 10:25:59,355 INFO L225 Difference]: With dead ends: 47 [2019-12-07 10:25:59,355 INFO L226 Difference]: Without dead ends: 47 [2019-12-07 10:25:59,355 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2019-12-07 10:25:59,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2019-12-07 10:25:59,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2019-12-07 10:25:59,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2019-12-07 10:25:59,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 50 transitions. [2019-12-07 10:25:59,359 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 50 transitions. Word has length 16 [2019-12-07 10:25:59,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 10:25:59,359 INFO L462 AbstractCegarLoop]: Abstraction has 47 states and 50 transitions. [2019-12-07 10:25:59,359 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-12-07 10:25:59,359 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 50 transitions. [2019-12-07 10:25:59,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-12-07 10:25:59,360 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 10:25:59,360 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 10:25:59,561 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 10:25:59,562 INFO L410 AbstractCegarLoop]: === Iteration 7 === [fooErr1REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-12-07 10:25:59,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 10:25:59,563 INFO L82 PathProgramCache]: Analyzing trace with hash -661735507, now seen corresponding path program 1 times [2019-12-07 10:25:59,563 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 10:25:59,564 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348720375] [2019-12-07 10:25:59,564 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 10:25:59,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 10:25:59,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 10:25:59,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 10:25:59,650 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-12-07 10:25:59,650 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348720375] [2019-12-07 10:25:59,650 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 10:25:59,650 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 10:25:59,650 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316857825] [2019-12-07 10:25:59,651 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 10:25:59,651 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 10:25:59,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 10:25:59,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 10:25:59,651 INFO L87 Difference]: Start difference. First operand 47 states and 50 transitions. Second operand 4 states. [2019-12-07 10:25:59,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 10:25:59,689 INFO L93 Difference]: Finished difference Result 45 states and 48 transitions. [2019-12-07 10:25:59,689 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 10:25:59,690 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2019-12-07 10:25:59,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 10:25:59,690 INFO L225 Difference]: With dead ends: 45 [2019-12-07 10:25:59,690 INFO L226 Difference]: Without dead ends: 45 [2019-12-07 10:25:59,691 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 10:25:59,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2019-12-07 10:25:59,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2019-12-07 10:25:59,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2019-12-07 10:25:59,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 48 transitions. [2019-12-07 10:25:59,694 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 48 transitions. Word has length 30 [2019-12-07 10:25:59,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 10:25:59,694 INFO L462 AbstractCegarLoop]: Abstraction has 45 states and 48 transitions. [2019-12-07 10:25:59,694 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 10:25:59,694 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 48 transitions. [2019-12-07 10:25:59,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-12-07 10:25:59,695 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 10:25:59,695 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 10:25:59,695 INFO L410 AbstractCegarLoop]: === Iteration 8 === [fooErr1REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-12-07 10:25:59,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 10:25:59,696 INFO L82 PathProgramCache]: Analyzing trace with hash -661735506, now seen corresponding path program 1 times [2019-12-07 10:25:59,696 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 10:25:59,696 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829412933] [2019-12-07 10:25:59,696 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 10:25:59,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 10:25:59,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 10:25:59,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 10:25:59,828 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 10:25:59,828 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829412933] [2019-12-07 10:25:59,828 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1123876233] [2019-12-07 10:25:59,828 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ba661145-3dbb-424f-a1ba-ea26f481e846/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 [2019-12-07 10:25:59,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 10:25:59,853 INFO L264 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 7 conjunts are in the unsatisfiable core [2019-12-07 10:25:59,855 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 10:25:59,907 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 10:25:59,908 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 10:25:59,908 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2019-12-07 10:25:59,908 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557797823] [2019-12-07 10:25:59,908 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-12-07 10:25:59,908 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 10:25:59,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-12-07 10:25:59,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2019-12-07 10:25:59,909 INFO L87 Difference]: Start difference. First operand 45 states and 48 transitions. Second operand 13 states. [2019-12-07 10:26:00,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 10:26:00,121 INFO L93 Difference]: Finished difference Result 57 states and 60 transitions. [2019-12-07 10:26:00,121 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-12-07 10:26:00,121 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 30 [2019-12-07 10:26:00,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 10:26:00,122 INFO L225 Difference]: With dead ends: 57 [2019-12-07 10:26:00,122 INFO L226 Difference]: Without dead ends: 54 [2019-12-07 10:26:00,122 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2019-12-07 10:26:00,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2019-12-07 10:26:00,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 50. [2019-12-07 10:26:00,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2019-12-07 10:26:00,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 53 transitions. [2019-12-07 10:26:00,125 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 53 transitions. Word has length 30 [2019-12-07 10:26:00,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 10:26:00,125 INFO L462 AbstractCegarLoop]: Abstraction has 50 states and 53 transitions. [2019-12-07 10:26:00,125 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-12-07 10:26:00,125 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 53 transitions. [2019-12-07 10:26:00,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2019-12-07 10:26:00,126 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 10:26:00,126 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 10:26:00,326 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 10:26:00,327 INFO L410 AbstractCegarLoop]: === Iteration 9 === [fooErr1REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-12-07 10:26:00,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 10:26:00,328 INFO L82 PathProgramCache]: Analyzing trace with hash 1228723375, now seen corresponding path program 2 times [2019-12-07 10:26:00,328 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 10:26:00,329 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662225184] [2019-12-07 10:26:00,329 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 10:26:00,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 10:26:00,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 10:26:00,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 10:26:00,523 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 10:26:00,523 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662225184] [2019-12-07 10:26:00,523 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2064297626] [2019-12-07 10:26:00,523 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ba661145-3dbb-424f-a1ba-ea26f481e846/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 [2019-12-07 10:26:00,545 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2019-12-07 10:26:00,545 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 10:26:00,546 INFO L264 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 8 conjunts are in the unsatisfiable core [2019-12-07 10:26:00,547 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 10:26:00,565 INFO L430 ElimStorePlain]: Different costs {0=[|v_#length_12|], 1=[|v_#valid_24|]} [2019-12-07 10:26:00,571 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 10:26:00,579 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2019-12-07 10:26:00,579 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 10:26:00,587 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 10:26:00,589 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 10:26:00,591 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2019-12-07 10:26:00,591 INFO L534 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-12-07 10:26:00,596 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 10:26:00,596 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-12-07 10:26:00,596 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:24, output treesize:17 [2019-12-07 10:26:00,689 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-12-07 10:26:00,689 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-12-07 10:26:00,689 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 12 [2019-12-07 10:26:00,689 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177462496] [2019-12-07 10:26:00,689 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 10:26:00,689 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 10:26:00,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 10:26:00,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2019-12-07 10:26:00,690 INFO L87 Difference]: Start difference. First operand 50 states and 53 transitions. Second operand 5 states. [2019-12-07 10:26:00,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 10:26:00,717 INFO L93 Difference]: Finished difference Result 48 states and 51 transitions. [2019-12-07 10:26:00,717 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 10:26:00,718 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 35 [2019-12-07 10:26:00,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 10:26:00,718 INFO L225 Difference]: With dead ends: 48 [2019-12-07 10:26:00,718 INFO L226 Difference]: Without dead ends: 48 [2019-12-07 10:26:00,719 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2019-12-07 10:26:00,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2019-12-07 10:26:00,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2019-12-07 10:26:00,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2019-12-07 10:26:00,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 51 transitions. [2019-12-07 10:26:00,722 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 51 transitions. Word has length 35 [2019-12-07 10:26:00,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 10:26:00,722 INFO L462 AbstractCegarLoop]: Abstraction has 48 states and 51 transitions. [2019-12-07 10:26:00,722 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 10:26:00,722 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 51 transitions. [2019-12-07 10:26:00,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2019-12-07 10:26:00,723 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 10:26:00,723 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 10:26:00,924 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 10:26:00,925 INFO L410 AbstractCegarLoop]: === Iteration 10 === [fooErr1REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-12-07 10:26:00,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 10:26:00,925 INFO L82 PathProgramCache]: Analyzing trace with hash -1738652280, now seen corresponding path program 1 times [2019-12-07 10:26:00,926 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 10:26:00,926 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574016189] [2019-12-07 10:26:00,926 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 10:26:00,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 10:26:01,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 10:26:01,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 10:26:01,064 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-12-07 10:26:01,064 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574016189] [2019-12-07 10:26:01,065 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [832574413] [2019-12-07 10:26:01,065 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ba661145-3dbb-424f-a1ba-ea26f481e846/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 [2019-12-07 10:26:01,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 10:26:01,111 INFO L264 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 8 conjunts are in the unsatisfiable core [2019-12-07 10:26:01,113 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 10:26:01,170 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 1 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 10:26:01,170 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 10:26:01,170 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8] total 11 [2019-12-07 10:26:01,171 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098121685] [2019-12-07 10:26:01,171 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-12-07 10:26:01,171 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 10:26:01,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-12-07 10:26:01,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2019-12-07 10:26:01,172 INFO L87 Difference]: Start difference. First operand 48 states and 51 transitions. Second operand 11 states. [2019-12-07 10:26:01,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 10:26:01,338 INFO L93 Difference]: Finished difference Result 84 states and 89 transitions. [2019-12-07 10:26:01,338 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-12-07 10:26:01,338 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 44 [2019-12-07 10:26:01,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 10:26:01,339 INFO L225 Difference]: With dead ends: 84 [2019-12-07 10:26:01,339 INFO L226 Difference]: Without dead ends: 81 [2019-12-07 10:26:01,339 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=76, Invalid=196, Unknown=0, NotChecked=0, Total=272 [2019-12-07 10:26:01,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2019-12-07 10:26:01,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 63. [2019-12-07 10:26:01,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2019-12-07 10:26:01,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 68 transitions. [2019-12-07 10:26:01,344 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 68 transitions. Word has length 44 [2019-12-07 10:26:01,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 10:26:01,344 INFO L462 AbstractCegarLoop]: Abstraction has 63 states and 68 transitions. [2019-12-07 10:26:01,344 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-12-07 10:26:01,344 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 68 transitions. [2019-12-07 10:26:01,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2019-12-07 10:26:01,346 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 10:26:01,346 INFO L410 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 10:26:01,547 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 10:26:01,547 INFO L410 AbstractCegarLoop]: === Iteration 11 === [fooErr1REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-12-07 10:26:01,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 10:26:01,547 INFO L82 PathProgramCache]: Analyzing trace with hash -950238676, now seen corresponding path program 2 times [2019-12-07 10:26:01,548 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 10:26:01,548 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085351886] [2019-12-07 10:26:01,548 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 10:26:01,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 10:26:01,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 10:26:01,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 10:26:01,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 10:26:01,686 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked. [2019-12-07 10:26:01,687 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085351886] [2019-12-07 10:26:01,687 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [294154001] [2019-12-07 10:26:01,687 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ba661145-3dbb-424f-a1ba-ea26f481e846/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 [2019-12-07 10:26:01,711 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2019-12-07 10:26:01,711 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 10:26:01,712 INFO L264 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 8 conjunts are in the unsatisfiable core [2019-12-07 10:26:01,715 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 10:26:01,746 INFO L343 Elim1Store]: treesize reduction 14, result has 50.0 percent of original size [2019-12-07 10:26:01,747 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 29 [2019-12-07 10:26:01,747 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 10:26:01,751 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 10:26:01,752 INFO L534 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-12-07 10:26:01,752 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:23, output treesize:15 [2019-12-07 10:26:01,813 INFO L343 Elim1Store]: treesize reduction 14, result has 50.0 percent of original size [2019-12-07 10:26:01,813 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 29 [2019-12-07 10:26:01,814 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 10:26:01,817 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 10:26:01,818 INFO L534 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-12-07 10:26:01,818 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:23, output treesize:15 [2019-12-07 10:26:01,898 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 258 trivial. 0 not checked. [2019-12-07 10:26:01,898 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-12-07 10:26:01,899 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 10 [2019-12-07 10:26:01,899 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396184406] [2019-12-07 10:26:01,899 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-07 10:26:01,899 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 10:26:01,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-07 10:26:01,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-12-07 10:26:01,900 INFO L87 Difference]: Start difference. First operand 63 states and 68 transitions. Second operand 6 states. [2019-12-07 10:26:01,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 10:26:01,951 INFO L93 Difference]: Finished difference Result 62 states and 67 transitions. [2019-12-07 10:26:01,951 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 10:26:01,951 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 85 [2019-12-07 10:26:01,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 10:26:01,952 INFO L225 Difference]: With dead ends: 62 [2019-12-07 10:26:01,952 INFO L226 Difference]: Without dead ends: 0 [2019-12-07 10:26:01,952 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 84 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2019-12-07 10:26:01,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-07 10:26:01,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-07 10:26:01,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-07 10:26:01,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-07 10:26:01,953 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 85 [2019-12-07 10:26:01,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 10:26:01,953 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 10:26:01,953 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-07 10:26:01,953 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-07 10:26:01,953 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-07 10:26:02,153 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 10:26:02,164 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 10:26:02 BoogieIcfgContainer [2019-12-07 10:26:02,164 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 10:26:02,165 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 10:26:02,165 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 10:26:02,166 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 10:26:02,166 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 10:25:58" (3/4) ... [2019-12-07 10:26:02,173 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-12-07 10:26:02,188 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2019-12-07 10:26:02,188 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure foo [2019-12-07 10:26:02,189 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2019-12-07 10:26:02,199 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2019-12-07 10:26:02,200 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2019-12-07 10:26:02,200 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-12-07 10:26:02,201 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-12-07 10:26:02,256 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_ba661145-3dbb-424f-a1ba-ea26f481e846/bin/uautomizer/witness.graphml [2019-12-07 10:26:02,256 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 10:26:02,257 INFO L168 Benchmark]: Toolchain (without parser) took 4485.74 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 125.8 MB). Free memory was 946.1 MB in the beginning and 1.0 GB in the end (delta: -84.1 MB). Peak memory consumption was 41.7 MB. Max. memory is 11.5 GB. [2019-12-07 10:26:02,257 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 960.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 10:26:02,257 INFO L168 Benchmark]: CACSL2BoogieTranslator took 175.96 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 78.6 MB). Free memory was 946.1 MB in the beginning and 1.1 GB in the end (delta: -127.3 MB). Peak memory consumption was 23.3 MB. Max. memory is 11.5 GB. [2019-12-07 10:26:02,258 INFO L168 Benchmark]: Boogie Preprocessor took 23.24 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 10:26:02,258 INFO L168 Benchmark]: RCFGBuilder took 194.29 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. [2019-12-07 10:26:02,258 INFO L168 Benchmark]: TraceAbstraction took 3998.28 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 47.2 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 18.6 MB). Peak memory consumption was 65.8 MB. Max. memory is 11.5 GB. [2019-12-07 10:26:02,258 INFO L168 Benchmark]: Witness Printer took 90.83 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 11.5 GB. [2019-12-07 10:26:02,260 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 960.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 175.96 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 78.6 MB). Free memory was 946.1 MB in the beginning and 1.1 GB in the end (delta: -127.3 MB). Peak memory consumption was 23.3 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 23.24 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 194.29 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3998.28 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 47.2 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 18.6 MB). Peak memory consumption was 65.8 MB. Max. memory is 11.5 GB. * Witness Printer took 90.83 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 16]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 16]: array index is always in bounds For all program executions holds that array index is always in bounds 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: 29]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 29]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 21]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 26]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 26]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 40 locations, 8 error locations. Result: SAFE, OverallTime: 3.9s, OverallIterations: 11, TraceHistogramMax: 10, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 280 SDtfs, 478 SDslu, 686 SDs, 0 SdLazy, 820 SolverSat, 88 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 314 GetRequests, 220 SyntacticMatches, 4 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=63occurred in iteration=10, 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, 11 MinimizatonAttempts, 51 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 510 NumberOfCodeBlocks, 418 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 494 ConstructedInterpolants, 90 QuantifiedInterpolants, 182724 SizeOfPredicates, 5 NumberOfNonLiveVariables, 450 ConjunctsInSsa, 36 ConjunctsInUnsatCore, 16 InterpolantComputations, 8 PerfectInterpolantSequences, 596/712 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...