./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 cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_4159ffcf-89cf-4521-9b09-a890dcfcdf2a/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_4159ffcf-89cf-4521-9b09-a890dcfcdf2a/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_4159ffcf-89cf-4521-9b09-a890dcfcdf2a/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_4159ffcf-89cf-4521-9b09-a890dcfcdf2a/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength4.c -s /tmp/vcloud-vcloud-master/worker/run_dir_4159ffcf-89cf-4521-9b09-a890dcfcdf2a/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_4159ffcf-89cf-4521-9b09-a890dcfcdf2a/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 0.1.24-cad4683 [2019-11-15 19:59:01,901 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-15 19:59:01,902 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-15 19:59:01,912 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-15 19:59:01,912 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-15 19:59:01,913 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-15 19:59:01,914 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-15 19:59:01,916 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-15 19:59:01,918 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-15 19:59:01,918 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-15 19:59:01,919 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-15 19:59:01,920 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-15 19:59:01,921 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-15 19:59:01,922 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-15 19:59:01,922 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-15 19:59:01,923 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-15 19:59:01,924 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-15 19:59:01,925 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-15 19:59:01,927 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-15 19:59:01,929 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-15 19:59:01,930 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-15 19:59:01,931 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-15 19:59:01,932 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-15 19:59:01,933 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-15 19:59:01,935 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-15 19:59:01,936 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-15 19:59:01,936 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-15 19:59:01,937 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-15 19:59:01,937 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-15 19:59:01,938 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-15 19:59:01,938 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-15 19:59:01,939 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-15 19:59:01,940 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-15 19:59:01,940 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-15 19:59:01,941 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-15 19:59:01,942 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-15 19:59:01,942 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-15 19:59:01,943 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-15 19:59:01,943 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-15 19:59:01,944 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-15 19:59:01,944 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-15 19:59:01,945 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_4159ffcf-89cf-4521-9b09-a890dcfcdf2a/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2019-11-15 19:59:01,958 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-15 19:59:01,958 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-15 19:59:01,959 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-15 19:59:01,959 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-15 19:59:01,960 INFO L138 SettingsManager]: * Use SBE=true [2019-11-15 19:59:01,960 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-15 19:59:01,960 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-15 19:59:01,960 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-15 19:59:01,961 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-15 19:59:01,961 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-15 19:59:01,961 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-15 19:59:01,961 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-11-15 19:59:01,961 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-11-15 19:59:01,962 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-11-15 19:59:01,962 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-15 19:59:01,962 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-15 19:59:01,962 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-15 19:59:01,963 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-15 19:59:01,963 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-15 19:59:01,963 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-15 19:59:01,963 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-15 19:59:01,963 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-15 19:59:01,964 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-15 19:59:01,964 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-15 19:59:01,964 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-15 19:59:01,964 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-15 19:59:01,964 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_4159ffcf-89cf-4521-9b09-a890dcfcdf2a/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 [2019-11-15 19:59:01,988 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-15 19:59:01,998 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-15 19:59:02,001 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-15 19:59:02,002 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-15 19:59:02,002 INFO L275 PluginConnector]: CDTParser initialized [2019-11-15 19:59:02,003 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_4159ffcf-89cf-4521-9b09-a890dcfcdf2a/bin/uautomizer/../../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength4.c [2019-11-15 19:59:02,051 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_4159ffcf-89cf-4521-9b09-a890dcfcdf2a/bin/uautomizer/data/3925d4b96/2c610994b38c4b119560dce660ba575f/FLAGe85cc8f9a [2019-11-15 19:59:02,460 INFO L306 CDTParser]: Found 1 translation units. [2019-11-15 19:59:02,460 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_4159ffcf-89cf-4521-9b09-a890dcfcdf2a/sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength4.c [2019-11-15 19:59:02,467 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_4159ffcf-89cf-4521-9b09-a890dcfcdf2a/bin/uautomizer/data/3925d4b96/2c610994b38c4b119560dce660ba575f/FLAGe85cc8f9a [2019-11-15 19:59:02,847 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_4159ffcf-89cf-4521-9b09-a890dcfcdf2a/bin/uautomizer/data/3925d4b96/2c610994b38c4b119560dce660ba575f [2019-11-15 19:59:02,849 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-15 19:59:02,850 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-15 19:59:02,851 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-15 19:59:02,851 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-15 19:59:02,854 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-15 19:59:02,855 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 07:59:02" (1/1) ... [2019-11-15 19:59:02,857 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e05a7c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 07:59:02, skipping insertion in model container [2019-11-15 19:59:02,857 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 07:59:02" (1/1) ... [2019-11-15 19:59:02,863 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-15 19:59:02,876 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-15 19:59:03,065 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 19:59:03,074 INFO L188 MainTranslator]: Completed pre-run [2019-11-15 19:59:03,094 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 19:59:03,104 INFO L192 MainTranslator]: Completed translation [2019-11-15 19:59:03,104 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 07:59:03 WrapperNode [2019-11-15 19:59:03,105 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-15 19:59:03,105 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-15 19:59:03,106 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-15 19:59:03,106 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-15 19:59:03,117 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 07:59:03" (1/1) ... [2019-11-15 19:59:03,118 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 07:59:03" (1/1) ... [2019-11-15 19:59:03,124 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 07:59:03" (1/1) ... [2019-11-15 19:59:03,124 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 07:59:03" (1/1) ... [2019-11-15 19:59:03,130 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 07:59:03" (1/1) ... [2019-11-15 19:59:03,135 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 07:59:03" (1/1) ... [2019-11-15 19:59:03,136 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 07:59:03" (1/1) ... [2019-11-15 19:59:03,138 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-15 19:59:03,138 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-15 19:59:03,138 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-15 19:59:03,138 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-15 19:59:03,139 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 07:59:03" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4159ffcf-89cf-4521-9b09-a890dcfcdf2a/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-15 19:59:03,187 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-15 19:59:03,187 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-15 19:59:03,187 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2019-11-15 19:59:03,187 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-15 19:59:03,188 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2019-11-15 19:59:03,188 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-15 19:59:03,188 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-15 19:59:03,188 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-15 19:59:03,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-15 19:59:03,188 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-15 19:59:03,188 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-15 19:59:03,188 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-15 19:59:03,410 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-15 19:59:03,410 INFO L284 CfgBuilder]: Removed 3 assume(true) statements. [2019-11-15 19:59:03,411 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 07:59:03 BoogieIcfgContainer [2019-11-15 19:59:03,411 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-15 19:59:03,412 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-15 19:59:03,412 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-15 19:59:03,415 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-15 19:59:03,415 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.11 07:59:02" (1/3) ... [2019-11-15 19:59:03,416 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cdbc725 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 07:59:03, skipping insertion in model container [2019-11-15 19:59:03,417 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 07:59:03" (2/3) ... [2019-11-15 19:59:03,417 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cdbc725 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 07:59:03, skipping insertion in model container [2019-11-15 19:59:03,417 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 07:59:03" (3/3) ... [2019-11-15 19:59:03,419 INFO L109 eAbstractionObserver]: Analyzing ICFG ArraysOfVariableLength4.c [2019-11-15 19:59:03,427 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-15 19:59:03,433 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 8 error locations. [2019-11-15 19:59:03,443 INFO L249 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2019-11-15 19:59:03,462 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-15 19:59:03,463 INFO L374 AbstractCegarLoop]: Hoare is false [2019-11-15 19:59:03,463 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-15 19:59:03,463 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-15 19:59:03,463 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-15 19:59:03,463 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-15 19:59:03,463 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-15 19:59:03,463 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-15 19:59:03,477 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2019-11-15 19:59:03,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-15 19:59:03,487 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 19:59:03,488 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 19:59:03,490 INFO L410 AbstractCegarLoop]: === Iteration 1 === [fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr1REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION]=== [2019-11-15 19:59:03,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 19:59:03,495 INFO L82 PathProgramCache]: Analyzing trace with hash 1909189377, now seen corresponding path program 1 times [2019-11-15 19:59:03,503 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 19:59:03,504 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582029649] [2019-11-15 19:59:03,504 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 19:59:03,504 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 19:59:03,511 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 19:59:03,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 19:59:03,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 19:59:03,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 19:59:03,670 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582029649] [2019-11-15 19:59:03,671 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 19:59:03,671 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-15 19:59:03,672 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748477225] [2019-11-15 19:59:03,675 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-15 19:59:03,676 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 19:59:03,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-15 19:59:03,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-15 19:59:03,690 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 4 states. [2019-11-15 19:59:03,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 19:59:03,871 INFO L93 Difference]: Finished difference Result 58 states and 63 transitions. [2019-11-15 19:59:03,872 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-15 19:59:03,873 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2019-11-15 19:59:03,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 19:59:03,882 INFO L225 Difference]: With dead ends: 58 [2019-11-15 19:59:03,882 INFO L226 Difference]: Without dead ends: 54 [2019-11-15 19:59:03,883 INFO L600 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 [2019-11-15 19:59:03,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2019-11-15 19:59:03,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 39. [2019-11-15 19:59:03,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2019-11-15 19:59:03,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2019-11-15 19:59:03,929 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 10 [2019-11-15 19:59:03,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 19:59:03,929 INFO L462 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2019-11-15 19:59:03,929 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-15 19:59:03,930 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2019-11-15 19:59:03,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-15 19:59:03,930 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 19:59:03,931 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 19:59:03,931 INFO L410 AbstractCegarLoop]: === Iteration 2 === [fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr1REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION]=== [2019-11-15 19:59:03,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 19:59:03,931 INFO L82 PathProgramCache]: Analyzing trace with hash -941983064, now seen corresponding path program 1 times [2019-11-15 19:59:03,932 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 19:59:03,932 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459754169] [2019-11-15 19:59:03,932 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 19:59:03,932 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 19:59:03,933 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 19:59:03,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 19:59:03,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 19:59:03,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 19:59:03,988 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459754169] [2019-11-15 19:59:03,988 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 19:59:03,988 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-15 19:59:03,989 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350494778] [2019-11-15 19:59:03,997 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-15 19:59:03,998 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 19:59:03,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-15 19:59:03,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-15 19:59:04,000 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand 4 states. [2019-11-15 19:59:04,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 19:59:04,124 INFO L93 Difference]: Finished difference Result 49 states and 53 transitions. [2019-11-15 19:59:04,125 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-15 19:59:04,125 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-11-15 19:59:04,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 19:59:04,129 INFO L225 Difference]: With dead ends: 49 [2019-11-15 19:59:04,129 INFO L226 Difference]: Without dead ends: 49 [2019-11-15 19:59:04,129 INFO L600 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 [2019-11-15 19:59:04,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2019-11-15 19:59:04,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 41. [2019-11-15 19:59:04,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2019-11-15 19:59:04,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2019-11-15 19:59:04,140 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 11 [2019-11-15 19:59:04,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 19:59:04,140 INFO L462 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2019-11-15 19:59:04,141 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-15 19:59:04,141 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2019-11-15 19:59:04,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-15 19:59:04,142 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 19:59:04,143 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 19:59:04,143 INFO L410 AbstractCegarLoop]: === Iteration 3 === [fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr1REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION]=== [2019-11-15 19:59:04,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 19:59:04,144 INFO L82 PathProgramCache]: Analyzing trace with hash 863296133, now seen corresponding path program 1 times [2019-11-15 19:59:04,145 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 19:59:04,145 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19791673] [2019-11-15 19:59:04,145 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 19:59:04,146 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 19:59:04,147 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 19:59:04,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 19:59:04,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 19:59:04,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 19:59:04,229 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19791673] [2019-11-15 19:59:04,229 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 19:59:04,229 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-15 19:59:04,229 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839571871] [2019-11-15 19:59:04,230 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-15 19:59:04,230 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 19:59:04,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-15 19:59:04,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-15 19:59:04,230 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand 6 states. [2019-11-15 19:59:04,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 19:59:04,351 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions. [2019-11-15 19:59:04,351 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-15 19:59:04,351 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2019-11-15 19:59:04,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 19:59:04,352 INFO L225 Difference]: With dead ends: 40 [2019-11-15 19:59:04,353 INFO L226 Difference]: Without dead ends: 40 [2019-11-15 19:59:04,353 INFO L600 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 [2019-11-15 19:59:04,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2019-11-15 19:59:04,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2019-11-15 19:59:04,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-11-15 19:59:04,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2019-11-15 19:59:04,358 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 12 [2019-11-15 19:59:04,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 19:59:04,358 INFO L462 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2019-11-15 19:59:04,358 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-15 19:59:04,359 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2019-11-15 19:59:04,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-15 19:59:04,359 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 19:59:04,359 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 19:59:04,360 INFO L410 AbstractCegarLoop]: === Iteration 4 === [fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr1REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION]=== [2019-11-15 19:59:04,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 19:59:04,360 INFO L82 PathProgramCache]: Analyzing trace with hash 863296134, now seen corresponding path program 1 times [2019-11-15 19:59:04,360 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 19:59:04,360 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208428818] [2019-11-15 19:59:04,360 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 19:59:04,360 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 19:59:04,360 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 19:59:04,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 19:59:04,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 19:59:04,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 19:59:04,475 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208428818] [2019-11-15 19:59:04,475 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 19:59:04,475 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-15 19:59:04,475 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781383956] [2019-11-15 19:59:04,476 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-15 19:59:04,476 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 19:59:04,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-15 19:59:04,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-11-15 19:59:04,477 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand 7 states. [2019-11-15 19:59:04,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 19:59:04,658 INFO L93 Difference]: Finished difference Result 42 states and 46 transitions. [2019-11-15 19:59:04,659 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-15 19:59:04,659 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2019-11-15 19:59:04,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 19:59:04,660 INFO L225 Difference]: With dead ends: 42 [2019-11-15 19:59:04,660 INFO L226 Difference]: Without dead ends: 42 [2019-11-15 19:59:04,660 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2019-11-15 19:59:04,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2019-11-15 19:59:04,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 39. [2019-11-15 19:59:04,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2019-11-15 19:59:04,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2019-11-15 19:59:04,665 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 12 [2019-11-15 19:59:04,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 19:59:04,666 INFO L462 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2019-11-15 19:59:04,666 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-15 19:59:04,666 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2019-11-15 19:59:04,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-15 19:59:04,666 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 19:59:04,667 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 19:59:04,667 INFO L410 AbstractCegarLoop]: === Iteration 5 === [fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr1REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION]=== [2019-11-15 19:59:04,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 19:59:04,667 INFO L82 PathProgramCache]: Analyzing trace with hash 143250926, now seen corresponding path program 1 times [2019-11-15 19:59:04,667 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 19:59:04,668 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499313849] [2019-11-15 19:59:04,668 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 19:59:04,668 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 19:59:04,668 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 19:59:04,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 19:59:04,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 19:59:04,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 19:59:04,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 19:59:04,755 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499313849] [2019-11-15 19:59:04,756 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 19:59:04,756 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-15 19:59:04,756 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985578559] [2019-11-15 19:59:04,756 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-15 19:59:04,756 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 19:59:04,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-15 19:59:04,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-15 19:59:04,757 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand 5 states. [2019-11-15 19:59:04,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 19:59:04,891 INFO L93 Difference]: Finished difference Result 45 states and 48 transitions. [2019-11-15 19:59:04,892 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-15 19:59:04,892 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2019-11-15 19:59:04,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 19:59:04,893 INFO L225 Difference]: With dead ends: 45 [2019-11-15 19:59:04,893 INFO L226 Difference]: Without dead ends: 42 [2019-11-15 19:59:04,894 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-11-15 19:59:04,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2019-11-15 19:59:04,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 39. [2019-11-15 19:59:04,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2019-11-15 19:59:04,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2019-11-15 19:59:04,898 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 15 [2019-11-15 19:59:04,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 19:59:04,899 INFO L462 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2019-11-15 19:59:04,899 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-15 19:59:04,899 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2019-11-15 19:59:04,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-15 19:59:04,900 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 19:59:04,900 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 19:59:04,900 INFO L410 AbstractCegarLoop]: === Iteration 6 === [fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr1REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION]=== [2019-11-15 19:59:04,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 19:59:04,900 INFO L82 PathProgramCache]: Analyzing trace with hash 1623425863, now seen corresponding path program 1 times [2019-11-15 19:59:04,904 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 19:59:04,905 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445032434] [2019-11-15 19:59:04,905 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 19:59:04,905 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 19:59:04,905 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 19:59:04,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 19:59:05,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 19:59:05,030 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 19:59:05,030 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445032434] [2019-11-15 19:59:05,031 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2048371607] [2019-11-15 19:59:05,031 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4159ffcf-89cf-4521-9b09-a890dcfcdf2a/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 19:59:05,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 19:59:05,095 INFO L256 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-15 19:59:05,101 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 19:59:05,141 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 19:59:05,141 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 19:59:05,141 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 3] total 9 [2019-11-15 19:59:05,141 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821349214] [2019-11-15 19:59:05,142 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-15 19:59:05,142 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 19:59:05,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-15 19:59:05,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2019-11-15 19:59:05,143 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand 10 states. [2019-11-15 19:59:05,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 19:59:05,419 INFO L93 Difference]: Finished difference Result 47 states and 50 transitions. [2019-11-15 19:59:05,419 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-15 19:59:05,419 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 16 [2019-11-15 19:59:05,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 19:59:05,420 INFO L225 Difference]: With dead ends: 47 [2019-11-15 19:59:05,420 INFO L226 Difference]: Without dead ends: 47 [2019-11-15 19:59:05,420 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2019-11-15 19:59:05,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2019-11-15 19:59:05,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2019-11-15 19:59:05,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2019-11-15 19:59:05,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 50 transitions. [2019-11-15 19:59:05,425 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 50 transitions. Word has length 16 [2019-11-15 19:59:05,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 19:59:05,425 INFO L462 AbstractCegarLoop]: Abstraction has 47 states and 50 transitions. [2019-11-15 19:59:05,426 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-15 19:59:05,426 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 50 transitions. [2019-11-15 19:59:05,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-11-15 19:59:05,427 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 19:59:05,427 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 19:59:05,632 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 19:59:05,632 INFO L410 AbstractCegarLoop]: === Iteration 7 === [fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr1REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION]=== [2019-11-15 19:59:05,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 19:59:05,632 INFO L82 PathProgramCache]: Analyzing trace with hash -661735507, now seen corresponding path program 1 times [2019-11-15 19:59:05,633 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 19:59:05,633 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245685176] [2019-11-15 19:59:05,633 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 19:59:05,633 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 19:59:05,633 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 19:59:05,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 19:59:05,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 19:59:05,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 19:59:05,706 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-11-15 19:59:05,707 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245685176] [2019-11-15 19:59:05,708 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 19:59:05,708 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-15 19:59:05,708 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513167944] [2019-11-15 19:59:05,709 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-15 19:59:05,710 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 19:59:05,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-15 19:59:05,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-15 19:59:05,710 INFO L87 Difference]: Start difference. First operand 47 states and 50 transitions. Second operand 4 states. [2019-11-15 19:59:05,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 19:59:05,788 INFO L93 Difference]: Finished difference Result 45 states and 48 transitions. [2019-11-15 19:59:05,788 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-15 19:59:05,788 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2019-11-15 19:59:05,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 19:59:05,789 INFO L225 Difference]: With dead ends: 45 [2019-11-15 19:59:05,789 INFO L226 Difference]: Without dead ends: 45 [2019-11-15 19:59:05,790 INFO L600 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 [2019-11-15 19:59:05,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2019-11-15 19:59:05,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2019-11-15 19:59:05,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2019-11-15 19:59:05,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 48 transitions. [2019-11-15 19:59:05,795 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 48 transitions. Word has length 30 [2019-11-15 19:59:05,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 19:59:05,795 INFO L462 AbstractCegarLoop]: Abstraction has 45 states and 48 transitions. [2019-11-15 19:59:05,795 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-15 19:59:05,796 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 48 transitions. [2019-11-15 19:59:05,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-11-15 19:59:05,796 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 19:59:05,797 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 19:59:05,797 INFO L410 AbstractCegarLoop]: === Iteration 8 === [fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr1REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION]=== [2019-11-15 19:59:05,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 19:59:05,797 INFO L82 PathProgramCache]: Analyzing trace with hash -661735506, now seen corresponding path program 1 times [2019-11-15 19:59:05,798 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 19:59:05,798 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658268332] [2019-11-15 19:59:05,798 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 19:59:05,798 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 19:59:05,798 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 19:59:05,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 19:59:05,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 19:59:05,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 19:59:06,032 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 19:59:06,032 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658268332] [2019-11-15 19:59:06,033 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [219316150] [2019-11-15 19:59:06,033 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4159ffcf-89cf-4521-9b09-a890dcfcdf2a/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 19:59:06,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 19:59:06,085 INFO L256 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-15 19:59:06,089 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 19:59:06,173 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 19:59:06,174 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 19:59:06,174 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2019-11-15 19:59:06,174 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650028133] [2019-11-15 19:59:06,174 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-11-15 19:59:06,175 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 19:59:06,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-11-15 19:59:06,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2019-11-15 19:59:06,175 INFO L87 Difference]: Start difference. First operand 45 states and 48 transitions. Second operand 13 states. [2019-11-15 19:59:06,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 19:59:06,502 INFO L93 Difference]: Finished difference Result 57 states and 60 transitions. [2019-11-15 19:59:06,502 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-15 19:59:06,503 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 30 [2019-11-15 19:59:06,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 19:59:06,504 INFO L225 Difference]: With dead ends: 57 [2019-11-15 19:59:06,504 INFO L226 Difference]: Without dead ends: 54 [2019-11-15 19:59:06,504 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2019-11-15 19:59:06,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2019-11-15 19:59:06,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 50. [2019-11-15 19:59:06,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2019-11-15 19:59:06,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 53 transitions. [2019-11-15 19:59:06,509 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 53 transitions. Word has length 30 [2019-11-15 19:59:06,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 19:59:06,509 INFO L462 AbstractCegarLoop]: Abstraction has 50 states and 53 transitions. [2019-11-15 19:59:06,509 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-11-15 19:59:06,509 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 53 transitions. [2019-11-15 19:59:06,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2019-11-15 19:59:06,510 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 19:59:06,510 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 19:59:06,718 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 19:59:06,719 INFO L410 AbstractCegarLoop]: === Iteration 9 === [fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr1REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION]=== [2019-11-15 19:59:06,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 19:59:06,719 INFO L82 PathProgramCache]: Analyzing trace with hash 1228723375, now seen corresponding path program 2 times [2019-11-15 19:59:06,719 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 19:59:06,719 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666862637] [2019-11-15 19:59:06,720 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 19:59:06,720 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 19:59:06,720 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 19:59:06,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 19:59:06,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 19:59:06,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 19:59:07,028 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 19:59:07,029 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666862637] [2019-11-15 19:59:07,029 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [936640031] [2019-11-15 19:59:07,029 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4159ffcf-89cf-4521-9b09-a890dcfcdf2a/bin/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 19:59:07,068 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2019-11-15 19:59:07,069 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 19:59:07,069 INFO L256 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-15 19:59:07,072 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 19:59:07,096 INFO L392 ElimStorePlain]: Different costs {0=[|v_#length_12|], 1=[|v_#valid_24|]} [2019-11-15 19:59:07,116 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-15 19:59:07,132 INFO L375 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 [2019-11-15 19:59:07,133 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-15 19:59:07,143 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 19:59:07,146 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-15 19:59:07,151 INFO L375 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 [2019-11-15 19:59:07,152 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-15 19:59:07,160 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 19:59:07,161 INFO L496 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. [2019-11-15 19:59:07,161 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:24, output treesize:17 [2019-11-15 19:59:07,332 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-11-15 19:59:07,333 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-15 19:59:07,333 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 12 [2019-11-15 19:59:07,333 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135652692] [2019-11-15 19:59:07,334 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-15 19:59:07,334 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 19:59:07,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-15 19:59:07,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2019-11-15 19:59:07,335 INFO L87 Difference]: Start difference. First operand 50 states and 53 transitions. Second operand 5 states. [2019-11-15 19:59:07,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 19:59:07,381 INFO L93 Difference]: Finished difference Result 48 states and 51 transitions. [2019-11-15 19:59:07,382 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-15 19:59:07,382 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 35 [2019-11-15 19:59:07,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 19:59:07,383 INFO L225 Difference]: With dead ends: 48 [2019-11-15 19:59:07,383 INFO L226 Difference]: Without dead ends: 48 [2019-11-15 19:59:07,383 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2019-11-15 19:59:07,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2019-11-15 19:59:07,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2019-11-15 19:59:07,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2019-11-15 19:59:07,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 51 transitions. [2019-11-15 19:59:07,387 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 51 transitions. Word has length 35 [2019-11-15 19:59:07,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 19:59:07,387 INFO L462 AbstractCegarLoop]: Abstraction has 48 states and 51 transitions. [2019-11-15 19:59:07,387 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-15 19:59:07,387 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 51 transitions. [2019-11-15 19:59:07,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2019-11-15 19:59:07,388 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 19:59:07,393 INFO L380 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] [2019-11-15 19:59:07,596 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 19:59:07,596 INFO L410 AbstractCegarLoop]: === Iteration 10 === [fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr1REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION]=== [2019-11-15 19:59:07,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 19:59:07,596 INFO L82 PathProgramCache]: Analyzing trace with hash -1738652280, now seen corresponding path program 1 times [2019-11-15 19:59:07,597 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 19:59:07,597 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663411006] [2019-11-15 19:59:07,597 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 19:59:07,597 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 19:59:07,597 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 19:59:07,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 19:59:07,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 19:59:07,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 19:59:07,660 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-11-15 19:59:07,661 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663411006] [2019-11-15 19:59:07,661 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1406612157] [2019-11-15 19:59:07,661 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4159ffcf-89cf-4521-9b09-a890dcfcdf2a/bin/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 19:59:07,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 19:59:07,712 INFO L256 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-15 19:59:07,716 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 19:59:07,810 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 1 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 19:59:07,814 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 19:59:07,814 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8] total 11 [2019-11-15 19:59:07,814 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233052389] [2019-11-15 19:59:07,815 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-15 19:59:07,816 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 19:59:07,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-15 19:59:07,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2019-11-15 19:59:07,817 INFO L87 Difference]: Start difference. First operand 48 states and 51 transitions. Second operand 11 states. [2019-11-15 19:59:08,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 19:59:08,086 INFO L93 Difference]: Finished difference Result 84 states and 89 transitions. [2019-11-15 19:59:08,087 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-11-15 19:59:08,087 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 44 [2019-11-15 19:59:08,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 19:59:08,088 INFO L225 Difference]: With dead ends: 84 [2019-11-15 19:59:08,089 INFO L226 Difference]: Without dead ends: 81 [2019-11-15 19:59:08,089 INFO L600 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 [2019-11-15 19:59:08,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2019-11-15 19:59:08,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 63. [2019-11-15 19:59:08,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2019-11-15 19:59:08,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 68 transitions. [2019-11-15 19:59:08,095 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 68 transitions. Word has length 44 [2019-11-15 19:59:08,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 19:59:08,095 INFO L462 AbstractCegarLoop]: Abstraction has 63 states and 68 transitions. [2019-11-15 19:59:08,095 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-11-15 19:59:08,095 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 68 transitions. [2019-11-15 19:59:08,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2019-11-15 19:59:08,105 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 19:59:08,105 INFO L380 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] [2019-11-15 19:59:08,306 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 19:59:08,306 INFO L410 AbstractCegarLoop]: === Iteration 11 === [fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr1REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr3REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION]=== [2019-11-15 19:59:08,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 19:59:08,306 INFO L82 PathProgramCache]: Analyzing trace with hash -950238676, now seen corresponding path program 2 times [2019-11-15 19:59:08,306 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 19:59:08,307 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255273793] [2019-11-15 19:59:08,307 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 19:59:08,307 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 19:59:08,307 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 19:59:08,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 19:59:08,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 19:59:08,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 19:59:08,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 19:59:08,447 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked. [2019-11-15 19:59:08,447 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255273793] [2019-11-15 19:59:08,447 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1799283570] [2019-11-15 19:59:08,448 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4159ffcf-89cf-4521-9b09-a890dcfcdf2a/bin/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 19:59:08,493 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2019-11-15 19:59:08,493 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 19:59:08,493 INFO L256 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-15 19:59:08,497 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 19:59:08,545 INFO L341 Elim1Store]: treesize reduction 14, result has 50.0 percent of original size [2019-11-15 19:59:08,546 INFO L375 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 [2019-11-15 19:59:08,546 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-15 19:59:08,553 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 19:59:08,554 INFO L496 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. [2019-11-15 19:59:08,554 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:23, output treesize:15 [2019-11-15 19:59:08,636 INFO L341 Elim1Store]: treesize reduction 14, result has 50.0 percent of original size [2019-11-15 19:59:08,637 INFO L375 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 [2019-11-15 19:59:08,637 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-15 19:59:08,643 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 19:59:08,644 INFO L496 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. [2019-11-15 19:59:08,644 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:23, output treesize:15 [2019-11-15 19:59:08,755 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 258 trivial. 0 not checked. [2019-11-15 19:59:08,755 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-15 19:59:08,755 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 10 [2019-11-15 19:59:08,755 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433756307] [2019-11-15 19:59:08,756 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-15 19:59:08,756 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 19:59:08,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-15 19:59:08,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-11-15 19:59:08,757 INFO L87 Difference]: Start difference. First operand 63 states and 68 transitions. Second operand 6 states. [2019-11-15 19:59:08,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 19:59:08,836 INFO L93 Difference]: Finished difference Result 62 states and 67 transitions. [2019-11-15 19:59:08,836 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-15 19:59:08,837 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 85 [2019-11-15 19:59:08,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 19:59:08,837 INFO L225 Difference]: With dead ends: 62 [2019-11-15 19:59:08,837 INFO L226 Difference]: Without dead ends: 0 [2019-11-15 19:59:08,838 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 84 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2019-11-15 19:59:08,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-15 19:59:08,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-15 19:59:08,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-15 19:59:08,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-15 19:59:08,838 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 85 [2019-11-15 19:59:08,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 19:59:08,839 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-15 19:59:08,839 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-15 19:59:08,839 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-15 19:59:08,839 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-15 19:59:09,039 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 19:59:09,043 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.11 07:59:09 BoogieIcfgContainer [2019-11-15 19:59:09,043 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-15 19:59:09,044 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-15 19:59:09,044 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-15 19:59:09,044 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-15 19:59:09,045 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 07:59:03" (3/4) ... [2019-11-15 19:59:09,049 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-15 19:59:09,054 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2019-11-15 19:59:09,054 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure foo [2019-11-15 19:59:09,054 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2019-11-15 19:59:09,058 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2019-11-15 19:59:09,058 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2019-11-15 19:59:09,058 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-11-15 19:59:09,059 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-15 19:59:09,093 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_4159ffcf-89cf-4521-9b09-a890dcfcdf2a/bin/uautomizer/witness.graphml [2019-11-15 19:59:09,093 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-15 19:59:09,094 INFO L168 Benchmark]: Toolchain (without parser) took 6244.20 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 172.5 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -129.0 MB). Peak memory consumption was 43.5 MB. Max. memory is 11.5 GB. [2019-11-15 19:59:09,095 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 19:59:09,095 INFO L168 Benchmark]: CACSL2BoogieTranslator took 254.13 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.1 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -179.9 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. [2019-11-15 19:59:09,096 INFO L168 Benchmark]: Boogie Preprocessor took 32.73 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 19:59:09,096 INFO L168 Benchmark]: RCFGBuilder took 273.49 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. [2019-11-15 19:59:09,096 INFO L168 Benchmark]: TraceAbstraction took 5631.11 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 41.4 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 20.5 MB). Peak memory consumption was 61.9 MB. Max. memory is 11.5 GB. [2019-11-15 19:59:09,097 INFO L168 Benchmark]: Witness Printer took 49.48 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 11.5 GB. [2019-11-15 19:59:09,099 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 254.13 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.1 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -179.9 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 32.73 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 273.49 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 5631.11 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 41.4 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 20.5 MB). Peak memory consumption was 61.9 MB. Max. memory is 11.5 GB. * Witness Printer took 49.48 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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: 16]: 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: 29]: 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 - PositiveResult [Line: 26]: 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 - 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: 5.5s, OverallIterations: 11, TraceHistogramMax: 10, AutomataDifference: 1.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 280 SDtfs, 478 SDslu, 686 SDs, 0 SdLazy, 820 SolverSat, 88 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 314 GetRequests, 220 SyntacticMatches, 4 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 1.6s 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, 1.9s InterpolantComputationTime, 510 NumberOfCodeBlocks, 418 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 494 ConstructedInterpolants, 90 QuantifiedInterpolants, 182724 SizeOfPredicates, 5 NumberOfNonLiveVariables, 445 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...