./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/termination-crafted/LexIndexValue-Array-1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- 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_d526ea11-d1e8-4a1e-9774-3bd05e924e63/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_d526ea11-d1e8-4a1e-9774-3bd05e924e63/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_d526ea11-d1e8-4a1e-9774-3bd05e924e63/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_d526ea11-d1e8-4a1e-9774-3bd05e924e63/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/termination-crafted/LexIndexValue-Array-1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_d526ea11-d1e8-4a1e-9774-3bd05e924e63/bin/uautomizer/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_d526ea11-d1e8-4a1e-9774-3bd05e924e63/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash b9dfe2826dbd43b76a93fbf593c8a07947a4c894 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 22:10:24,657 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-15 22:10:24,659 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-15 22:10:24,676 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-15 22:10:24,676 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-15 22:10:24,678 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-15 22:10:24,680 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-15 22:10:24,690 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-15 22:10:24,695 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-15 22:10:24,699 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-15 22:10:24,700 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-15 22:10:24,701 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-15 22:10:24,701 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-15 22:10:24,702 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-15 22:10:24,702 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-15 22:10:24,703 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-15 22:10:24,704 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-15 22:10:24,705 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-15 22:10:24,706 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-15 22:10:24,711 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-15 22:10:24,714 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-15 22:10:24,716 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-15 22:10:24,719 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-15 22:10:24,720 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-15 22:10:24,724 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-15 22:10:24,724 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-15 22:10:24,725 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-15 22:10:24,726 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-15 22:10:24,727 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-15 22:10:24,728 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-15 22:10:24,728 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-15 22:10:24,729 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-15 22:10:24,730 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-15 22:10:24,730 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-15 22:10:24,732 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-15 22:10:24,732 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-15 22:10:24,733 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-15 22:10:24,733 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-15 22:10:24,733 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-15 22:10:24,734 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-15 22:10:24,735 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-15 22:10:24,736 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_d526ea11-d1e8-4a1e-9774-3bd05e924e63/bin/uautomizer/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2019-11-15 22:10:24,764 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-15 22:10:24,764 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-15 22:10:24,766 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-15 22:10:24,766 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-15 22:10:24,766 INFO L138 SettingsManager]: * Use SBE=true [2019-11-15 22:10:24,766 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-15 22:10:24,767 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-15 22:10:24,767 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-15 22:10:24,767 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-15 22:10:24,767 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-11-15 22:10:24,767 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-11-15 22:10:24,768 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-11-15 22:10:24,768 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-15 22:10:24,768 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-15 22:10:24,768 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-15 22:10:24,769 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-15 22:10:24,769 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-15 22:10:24,769 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-15 22:10:24,769 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-15 22:10:24,770 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-15 22:10:24,770 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-15 22:10:24,770 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-15 22:10:24,770 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-15 22:10:24,771 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_d526ea11-d1e8-4a1e-9774-3bd05e924e63/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b9dfe2826dbd43b76a93fbf593c8a07947a4c894 [2019-11-15 22:10:24,818 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-15 22:10:24,831 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-15 22:10:24,834 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-15 22:10:24,839 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-15 22:10:24,840 INFO L275 PluginConnector]: CDTParser initialized [2019-11-15 22:10:24,840 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_d526ea11-d1e8-4a1e-9774-3bd05e924e63/bin/uautomizer/../../sv-benchmarks/c/termination-crafted/LexIndexValue-Array-1.c [2019-11-15 22:10:24,913 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d526ea11-d1e8-4a1e-9774-3bd05e924e63/bin/uautomizer/data/e08f54c1b/5deddadf7c374671a07b56ec5f2a1fb5/FLAG6ad989270 [2019-11-15 22:10:25,302 INFO L306 CDTParser]: Found 1 translation units. [2019-11-15 22:10:25,303 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_d526ea11-d1e8-4a1e-9774-3bd05e924e63/sv-benchmarks/c/termination-crafted/LexIndexValue-Array-1.c [2019-11-15 22:10:25,308 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d526ea11-d1e8-4a1e-9774-3bd05e924e63/bin/uautomizer/data/e08f54c1b/5deddadf7c374671a07b56ec5f2a1fb5/FLAG6ad989270 [2019-11-15 22:10:25,655 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_d526ea11-d1e8-4a1e-9774-3bd05e924e63/bin/uautomizer/data/e08f54c1b/5deddadf7c374671a07b56ec5f2a1fb5 [2019-11-15 22:10:25,658 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-15 22:10:25,659 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-15 22:10:25,666 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-15 22:10:25,666 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-15 22:10:25,671 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-15 22:10:25,672 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 10:10:25" (1/1) ... [2019-11-15 22:10:25,676 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5106d612 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:10:25, skipping insertion in model container [2019-11-15 22:10:25,676 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 10:10:25" (1/1) ... [2019-11-15 22:10:25,685 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-15 22:10:25,705 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-15 22:10:25,925 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 22:10:25,930 INFO L188 MainTranslator]: Completed pre-run [2019-11-15 22:10:26,024 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 22:10:26,045 INFO L192 MainTranslator]: Completed translation [2019-11-15 22:10:26,046 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:10:26 WrapperNode [2019-11-15 22:10:26,046 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-15 22:10:26,046 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-15 22:10:26,047 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-15 22:10:26,047 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-15 22:10:26,059 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:10:26" (1/1) ... [2019-11-15 22:10:26,059 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:10:26" (1/1) ... [2019-11-15 22:10:26,067 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:10:26" (1/1) ... [2019-11-15 22:10:26,067 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:10:26" (1/1) ... [2019-11-15 22:10:26,074 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:10:26" (1/1) ... [2019-11-15 22:10:26,079 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:10:26" (1/1) ... [2019-11-15 22:10:26,080 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:10:26" (1/1) ... [2019-11-15 22:10:26,082 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-15 22:10:26,083 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-15 22:10:26,083 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-15 22:10:26,083 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-15 22:10:26,084 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:10:26" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d526ea11-d1e8-4a1e-9774-3bd05e924e63/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 22:10:26,140 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-15 22:10:26,141 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-15 22:10:26,141 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-15 22:10:26,141 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-15 22:10:26,141 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-15 22:10:26,142 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-15 22:10:26,142 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-15 22:10:26,142 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-15 22:10:26,143 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-15 22:10:26,143 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-15 22:10:26,143 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-15 22:10:26,421 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-15 22:10:26,422 INFO L284 CfgBuilder]: Removed 2 assume(true) statements. [2019-11-15 22:10:26,423 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 10:10:26 BoogieIcfgContainer [2019-11-15 22:10:26,423 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-15 22:10:26,424 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-15 22:10:26,424 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-15 22:10:26,436 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-15 22:10:26,437 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.11 10:10:25" (1/3) ... [2019-11-15 22:10:26,438 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f1be89a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 10:10:26, skipping insertion in model container [2019-11-15 22:10:26,438 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:10:26" (2/3) ... [2019-11-15 22:10:26,438 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f1be89a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 10:10:26, skipping insertion in model container [2019-11-15 22:10:26,438 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 10:10:26" (3/3) ... [2019-11-15 22:10:26,440 INFO L109 eAbstractionObserver]: Analyzing ICFG LexIndexValue-Array-1.c [2019-11-15 22:10:26,453 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-15 22:10:26,463 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 9 error locations. [2019-11-15 22:10:26,478 INFO L249 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2019-11-15 22:10:26,500 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-15 22:10:26,501 INFO L374 AbstractCegarLoop]: Hoare is false [2019-11-15 22:10:26,501 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-15 22:10:26,501 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-15 22:10:26,501 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-15 22:10:26,502 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-15 22:10:26,502 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-15 22:10:26,502 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-15 22:10:26,518 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2019-11-15 22:10:26,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-15 22:10:26,528 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:10:26,529 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 22:10:26,530 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION]=== [2019-11-15 22:10:26,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:10:26,536 INFO L82 PathProgramCache]: Analyzing trace with hash -1038673271, now seen corresponding path program 1 times [2019-11-15 22:10:26,545 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:10:26,546 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900367646] [2019-11-15 22:10:26,546 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:10:26,546 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:10:26,546 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:10:26,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:10:26,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:10:26,760 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 22:10:26,761 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900367646] [2019-11-15 22:10:26,762 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 22:10:26,762 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-15 22:10:26,762 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939296189] [2019-11-15 22:10:26,765 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-15 22:10:26,766 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 22:10:26,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-15 22:10:26,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-15 22:10:26,779 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 4 states. [2019-11-15 22:10:26,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 22:10:26,929 INFO L93 Difference]: Finished difference Result 39 states and 42 transitions. [2019-11-15 22:10:26,930 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-15 22:10:26,931 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2019-11-15 22:10:26,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 22:10:26,943 INFO L225 Difference]: With dead ends: 39 [2019-11-15 22:10:26,943 INFO L226 Difference]: Without dead ends: 36 [2019-11-15 22:10:26,945 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-15 22:10:26,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-11-15 22:10:26,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 33. [2019-11-15 22:10:26,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2019-11-15 22:10:26,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2019-11-15 22:10:26,980 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 8 [2019-11-15 22:10:26,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 22:10:26,980 INFO L462 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2019-11-15 22:10:26,981 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-15 22:10:26,981 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2019-11-15 22:10:26,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-15 22:10:26,982 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:10:26,982 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 22:10:26,982 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION]=== [2019-11-15 22:10:26,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:10:26,983 INFO L82 PathProgramCache]: Analyzing trace with hash -1038673272, now seen corresponding path program 1 times [2019-11-15 22:10:26,983 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:10:26,983 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771467548] [2019-11-15 22:10:26,984 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:10:26,984 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:10:26,984 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:10:26,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:10:27,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:10:27,034 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 22:10:27,034 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771467548] [2019-11-15 22:10:27,035 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 22:10:27,035 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-15 22:10:27,035 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676887032] [2019-11-15 22:10:27,041 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-15 22:10:27,041 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 22:10:27,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-15 22:10:27,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-15 22:10:27,042 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 4 states. [2019-11-15 22:10:27,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 22:10:27,137 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2019-11-15 22:10:27,137 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-15 22:10:27,137 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2019-11-15 22:10:27,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 22:10:27,138 INFO L225 Difference]: With dead ends: 29 [2019-11-15 22:10:27,139 INFO L226 Difference]: Without dead ends: 29 [2019-11-15 22:10:27,140 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-15 22:10:27,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-11-15 22:10:27,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2019-11-15 22:10:27,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-11-15 22:10:27,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2019-11-15 22:10:27,145 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 8 [2019-11-15 22:10:27,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 22:10:27,145 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2019-11-15 22:10:27,145 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-15 22:10:27,146 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2019-11-15 22:10:27,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-15 22:10:27,146 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:10:27,147 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 22:10:27,147 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION]=== [2019-11-15 22:10:27,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:10:27,147 INFO L82 PathProgramCache]: Analyzing trace with hash 1416659532, now seen corresponding path program 1 times [2019-11-15 22:10:27,148 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:10:27,148 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679344338] [2019-11-15 22:10:27,151 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:10:27,151 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:10:27,151 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:10:27,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:10:27,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:10:27,323 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 22:10:27,324 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679344338] [2019-11-15 22:10:27,324 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2096695519] [2019-11-15 22:10:27,324 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d526ea11-d1e8-4a1e-9774-3bd05e924e63/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 22:10:27,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:10:27,372 INFO L256 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-15 22:10:27,378 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 22:10:27,440 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-15 22:10:27,441 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-15 22:10:27,451 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 22:10:27,451 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-15 22:10:27,451 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2019-11-15 22:10:27,465 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 22:10:27,465 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 22:10:27,465 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3] total 4 [2019-11-15 22:10:27,466 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327627898] [2019-11-15 22:10:27,466 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-15 22:10:27,467 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 22:10:27,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-15 22:10:27,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-15 22:10:27,467 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand 5 states. [2019-11-15 22:10:27,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 22:10:27,579 INFO L93 Difference]: Finished difference Result 35 states and 38 transitions. [2019-11-15 22:10:27,580 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-15 22:10:27,580 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2019-11-15 22:10:27,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 22:10:27,581 INFO L225 Difference]: With dead ends: 35 [2019-11-15 22:10:27,582 INFO L226 Difference]: Without dead ends: 35 [2019-11-15 22:10:27,582 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-15 22:10:27,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2019-11-15 22:10:27,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2019-11-15 22:10:27,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2019-11-15 22:10:27,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2019-11-15 22:10:27,587 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 12 [2019-11-15 22:10:27,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 22:10:27,588 INFO L462 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2019-11-15 22:10:27,588 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-15 22:10:27,588 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2019-11-15 22:10:27,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-15 22:10:27,589 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:10:27,590 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 22:10:27,793 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 22:10:27,793 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION]=== [2019-11-15 22:10:27,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:10:27,794 INFO L82 PathProgramCache]: Analyzing trace with hash -931508081, now seen corresponding path program 2 times [2019-11-15 22:10:27,794 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:10:27,794 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777892676] [2019-11-15 22:10:27,795 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:10:27,795 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:10:27,795 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:10:27,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:10:27,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:10:27,949 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 22:10:27,949 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777892676] [2019-11-15 22:10:27,949 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [830200378] [2019-11-15 22:10:27,949 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d526ea11-d1e8-4a1e-9774-3bd05e924e63/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 22:10:28,009 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-15 22:10:28,010 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 22:10:28,011 INFO L256 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-15 22:10:28,012 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 22:10:28,025 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-15 22:10:28,025 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-15 22:10:28,032 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 22:10:28,033 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-15 22:10:28,033 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2019-11-15 22:10:28,134 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 22:10:28,134 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-15 22:10:28,134 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 9 [2019-11-15 22:10:28,134 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070376309] [2019-11-15 22:10:28,135 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-15 22:10:28,135 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 22:10:28,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-15 22:10:28,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2019-11-15 22:10:28,136 INFO L87 Difference]: Start difference. First operand 33 states and 36 transitions. Second operand 6 states. [2019-11-15 22:10:28,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 22:10:28,194 INFO L93 Difference]: Finished difference Result 34 states and 37 transitions. [2019-11-15 22:10:28,194 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-15 22:10:28,194 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2019-11-15 22:10:28,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 22:10:28,195 INFO L225 Difference]: With dead ends: 34 [2019-11-15 22:10:28,196 INFO L226 Difference]: Without dead ends: 34 [2019-11-15 22:10:28,196 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2019-11-15 22:10:28,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-11-15 22:10:28,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 31. [2019-11-15 22:10:28,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-11-15 22:10:28,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2019-11-15 22:10:28,201 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 16 [2019-11-15 22:10:28,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 22:10:28,201 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2019-11-15 22:10:28,201 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-15 22:10:28,202 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2019-11-15 22:10:28,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-15 22:10:28,202 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:10:28,203 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 22:10:28,403 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 22:10:28,403 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION]=== [2019-11-15 22:10:28,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:10:28,404 INFO L82 PathProgramCache]: Analyzing trace with hash -1826117314, now seen corresponding path program 1 times [2019-11-15 22:10:28,404 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:10:28,404 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428048518] [2019-11-15 22:10:28,405 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:10:28,405 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:10:28,405 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:10:28,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:10:28,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:10:28,466 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 22:10:28,466 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428048518] [2019-11-15 22:10:28,467 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1363173983] [2019-11-15 22:10:28,467 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d526ea11-d1e8-4a1e-9774-3bd05e924e63/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 22:10:28,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:10:28,522 INFO L256 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-15 22:10:28,524 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 22:10:28,539 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 22:10:28,542 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 22:10:28,542 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 7 [2019-11-15 22:10:28,543 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733406464] [2019-11-15 22:10:28,543 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-15 22:10:28,544 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 22:10:28,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-15 22:10:28,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-11-15 22:10:28,547 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand 7 states. [2019-11-15 22:10:28,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 22:10:28,632 INFO L93 Difference]: Finished difference Result 38 states and 41 transitions. [2019-11-15 22:10:28,633 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-15 22:10:28,633 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2019-11-15 22:10:28,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 22:10:28,634 INFO L225 Difference]: With dead ends: 38 [2019-11-15 22:10:28,634 INFO L226 Difference]: Without dead ends: 38 [2019-11-15 22:10:28,635 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-11-15 22:10:28,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2019-11-15 22:10:28,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 35. [2019-11-15 22:10:28,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2019-11-15 22:10:28,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 38 transitions. [2019-11-15 22:10:28,641 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 38 transitions. Word has length 18 [2019-11-15 22:10:28,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 22:10:28,641 INFO L462 AbstractCegarLoop]: Abstraction has 35 states and 38 transitions. [2019-11-15 22:10:28,641 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-15 22:10:28,642 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 38 transitions. [2019-11-15 22:10:28,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-11-15 22:10:28,643 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:10:28,643 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 22:10:28,849 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 22:10:28,849 INFO L410 AbstractCegarLoop]: === Iteration 6 === [mainErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION]=== [2019-11-15 22:10:28,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:10:28,850 INFO L82 PathProgramCache]: Analyzing trace with hash 945846593, now seen corresponding path program 2 times [2019-11-15 22:10:28,850 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:10:28,851 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045857181] [2019-11-15 22:10:28,851 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:10:28,863 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:10:28,863 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:10:28,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:10:28,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:10:28,972 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 22:10:28,972 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045857181] [2019-11-15 22:10:28,973 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1980955917] [2019-11-15 22:10:28,973 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d526ea11-d1e8-4a1e-9774-3bd05e924e63/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 22:10:29,020 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2019-11-15 22:10:29,020 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 22:10:29,022 INFO L256 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-15 22:10:29,024 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 22:10:29,034 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-15 22:10:29,034 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-15 22:10:29,044 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 22:10:29,045 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-15 22:10:29,045 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2019-11-15 22:10:29,073 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-11-15 22:10:29,075 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-15 22:10:29,075 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2019-11-15 22:10:29,076 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72547836] [2019-11-15 22:10:29,077 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-15 22:10:29,077 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 22:10:29,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-15 22:10:29,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-11-15 22:10:29,079 INFO L87 Difference]: Start difference. First operand 35 states and 38 transitions. Second operand 3 states. [2019-11-15 22:10:29,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 22:10:29,116 INFO L93 Difference]: Finished difference Result 46 states and 52 transitions. [2019-11-15 22:10:29,117 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-15 22:10:29,117 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2019-11-15 22:10:29,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 22:10:29,118 INFO L225 Difference]: With dead ends: 46 [2019-11-15 22:10:29,118 INFO L226 Difference]: Without dead ends: 46 [2019-11-15 22:10:29,118 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-11-15 22:10:29,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2019-11-15 22:10:29,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2019-11-15 22:10:29,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2019-11-15 22:10:29,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 51 transitions. [2019-11-15 22:10:29,124 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 51 transitions. Word has length 22 [2019-11-15 22:10:29,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 22:10:29,125 INFO L462 AbstractCegarLoop]: Abstraction has 45 states and 51 transitions. [2019-11-15 22:10:29,125 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-15 22:10:29,125 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 51 transitions. [2019-11-15 22:10:29,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-11-15 22:10:29,126 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:10:29,127 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 22:10:29,328 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 22:10:29,329 INFO L410 AbstractCegarLoop]: === Iteration 7 === [mainErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION]=== [2019-11-15 22:10:29,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:10:29,329 INFO L82 PathProgramCache]: Analyzing trace with hash -1574303516, now seen corresponding path program 1 times [2019-11-15 22:10:29,329 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:10:29,329 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511880583] [2019-11-15 22:10:29,330 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:10:29,330 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:10:29,330 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:10:29,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:10:29,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:10:29,432 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-11-15 22:10:29,432 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511880583] [2019-11-15 22:10:29,433 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 22:10:29,433 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-15 22:10:29,433 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722948454] [2019-11-15 22:10:29,434 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-15 22:10:29,434 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 22:10:29,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-15 22:10:29,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-15 22:10:29,435 INFO L87 Difference]: Start difference. First operand 45 states and 51 transitions. Second operand 5 states. [2019-11-15 22:10:29,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 22:10:29,540 INFO L93 Difference]: Finished difference Result 48 states and 52 transitions. [2019-11-15 22:10:29,541 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-15 22:10:29,541 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2019-11-15 22:10:29,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 22:10:29,542 INFO L225 Difference]: With dead ends: 48 [2019-11-15 22:10:29,542 INFO L226 Difference]: Without dead ends: 48 [2019-11-15 22:10:29,543 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-15 22:10:29,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2019-11-15 22:10:29,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 45. [2019-11-15 22:10:29,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2019-11-15 22:10:29,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 50 transitions. [2019-11-15 22:10:29,549 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 50 transitions. Word has length 24 [2019-11-15 22:10:29,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 22:10:29,550 INFO L462 AbstractCegarLoop]: Abstraction has 45 states and 50 transitions. [2019-11-15 22:10:29,550 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-15 22:10:29,550 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 50 transitions. [2019-11-15 22:10:29,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-11-15 22:10:29,551 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:10:29,552 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 22:10:29,552 INFO L410 AbstractCegarLoop]: === Iteration 8 === [mainErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION]=== [2019-11-15 22:10:29,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:10:29,553 INFO L82 PathProgramCache]: Analyzing trace with hash -1258071097, now seen corresponding path program 1 times [2019-11-15 22:10:29,553 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:10:29,553 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731533109] [2019-11-15 22:10:29,554 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:10:29,554 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:10:29,554 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:10:29,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:10:29,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:10:29,632 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 22:10:29,634 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731533109] [2019-11-15 22:10:29,634 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1840969815] [2019-11-15 22:10:29,634 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d526ea11-d1e8-4a1e-9774-3bd05e924e63/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 22:10:29,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:10:29,686 INFO L256 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-15 22:10:29,690 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 22:10:29,708 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 22:10:29,708 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 22:10:29,708 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 8 [2019-11-15 22:10:29,709 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91263997] [2019-11-15 22:10:29,709 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-15 22:10:29,710 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 22:10:29,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-15 22:10:29,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2019-11-15 22:10:29,711 INFO L87 Difference]: Start difference. First operand 45 states and 50 transitions. Second operand 8 states. [2019-11-15 22:10:29,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 22:10:29,804 INFO L93 Difference]: Finished difference Result 52 states and 57 transitions. [2019-11-15 22:10:29,804 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-15 22:10:29,805 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 26 [2019-11-15 22:10:29,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 22:10:29,806 INFO L225 Difference]: With dead ends: 52 [2019-11-15 22:10:29,806 INFO L226 Difference]: Without dead ends: 52 [2019-11-15 22:10:29,806 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2019-11-15 22:10:29,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2019-11-15 22:10:29,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 49. [2019-11-15 22:10:29,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2019-11-15 22:10:29,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 54 transitions. [2019-11-15 22:10:29,812 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 54 transitions. Word has length 26 [2019-11-15 22:10:29,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 22:10:29,813 INFO L462 AbstractCegarLoop]: Abstraction has 49 states and 54 transitions. [2019-11-15 22:10:29,813 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-15 22:10:29,813 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 54 transitions. [2019-11-15 22:10:29,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-11-15 22:10:29,815 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:10:29,815 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 22:10:30,019 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 22:10:30,019 INFO L410 AbstractCegarLoop]: === Iteration 9 === [mainErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION]=== [2019-11-15 22:10:30,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:10:30,020 INFO L82 PathProgramCache]: Analyzing trace with hash -113674038, now seen corresponding path program 2 times [2019-11-15 22:10:30,020 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:10:30,020 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827977032] [2019-11-15 22:10:30,020 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:10:30,020 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:10:30,020 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:10:30,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:10:30,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:10:30,134 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 22:10:30,135 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827977032] [2019-11-15 22:10:30,135 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1241861985] [2019-11-15 22:10:30,135 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d526ea11-d1e8-4a1e-9774-3bd05e924e63/bin/uautomizer/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 22:10:30,178 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2019-11-15 22:10:30,178 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 22:10:30,179 INFO L256 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-15 22:10:30,181 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 22:10:30,274 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-11-15 22:10:30,274 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-15 22:10:30,274 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 11 [2019-11-15 22:10:30,275 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325255219] [2019-11-15 22:10:30,275 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-15 22:10:30,275 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 22:10:30,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-15 22:10:30,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2019-11-15 22:10:30,276 INFO L87 Difference]: Start difference. First operand 49 states and 54 transitions. Second operand 5 states. [2019-11-15 22:10:30,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 22:10:30,330 INFO L93 Difference]: Finished difference Result 48 states and 53 transitions. [2019-11-15 22:10:30,331 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-15 22:10:30,331 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2019-11-15 22:10:30,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 22:10:30,332 INFO L225 Difference]: With dead ends: 48 [2019-11-15 22:10:30,332 INFO L226 Difference]: Without dead ends: 46 [2019-11-15 22:10:30,333 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2019-11-15 22:10:30,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2019-11-15 22:10:30,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2019-11-15 22:10:30,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2019-11-15 22:10:30,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 50 transitions. [2019-11-15 22:10:30,338 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 50 transitions. Word has length 30 [2019-11-15 22:10:30,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 22:10:30,338 INFO L462 AbstractCegarLoop]: Abstraction has 46 states and 50 transitions. [2019-11-15 22:10:30,338 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-15 22:10:30,338 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 50 transitions. [2019-11-15 22:10:30,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-11-15 22:10:30,340 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:10:30,340 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 22:10:30,544 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 22:10:30,545 INFO L410 AbstractCegarLoop]: === Iteration 10 === [mainErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION]=== [2019-11-15 22:10:30,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:10:30,545 INFO L82 PathProgramCache]: Analyzing trace with hash -1865200645, now seen corresponding path program 1 times [2019-11-15 22:10:30,545 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:10:30,545 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721979178] [2019-11-15 22:10:30,545 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:10:30,546 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:10:30,546 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:10:30,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:10:30,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:10:30,627 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-15 22:10:30,627 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721979178] [2019-11-15 22:10:30,628 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [141993594] [2019-11-15 22:10:30,628 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d526ea11-d1e8-4a1e-9774-3bd05e924e63/bin/uautomizer/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 22:10:30,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:10:30,677 INFO L256 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-15 22:10:30,679 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 22:10:30,693 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-15 22:10:30,693 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 22:10:30,693 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 9 [2019-11-15 22:10:30,693 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009287201] [2019-11-15 22:10:30,694 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-15 22:10:30,694 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 22:10:30,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-15 22:10:30,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2019-11-15 22:10:30,695 INFO L87 Difference]: Start difference. First operand 46 states and 50 transitions. Second operand 9 states. [2019-11-15 22:10:30,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 22:10:30,784 INFO L93 Difference]: Finished difference Result 53 states and 57 transitions. [2019-11-15 22:10:30,784 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-15 22:10:30,784 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 32 [2019-11-15 22:10:30,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 22:10:30,785 INFO L225 Difference]: With dead ends: 53 [2019-11-15 22:10:30,785 INFO L226 Difference]: Without dead ends: 53 [2019-11-15 22:10:30,785 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2019-11-15 22:10:30,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2019-11-15 22:10:30,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 50. [2019-11-15 22:10:30,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2019-11-15 22:10:30,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2019-11-15 22:10:30,790 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 32 [2019-11-15 22:10:30,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 22:10:30,790 INFO L462 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2019-11-15 22:10:30,790 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-15 22:10:30,790 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2019-11-15 22:10:30,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2019-11-15 22:10:30,791 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:10:30,792 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 22:10:30,992 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 22:10:30,992 INFO L410 AbstractCegarLoop]: === Iteration 11 === [mainErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION]=== [2019-11-15 22:10:30,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:10:30,993 INFO L82 PathProgramCache]: Analyzing trace with hash 133323454, now seen corresponding path program 2 times [2019-11-15 22:10:30,993 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:10:30,993 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962014862] [2019-11-15 22:10:30,993 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:10:30,993 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:10:30,994 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:10:31,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:10:31,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:10:31,090 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-15 22:10:31,090 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962014862] [2019-11-15 22:10:31,091 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [346640761] [2019-11-15 22:10:31,091 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d526ea11-d1e8-4a1e-9774-3bd05e924e63/bin/uautomizer/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 22:10:31,138 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-15 22:10:31,138 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 22:10:31,139 INFO L256 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-15 22:10:31,140 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 22:10:31,159 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-15 22:10:31,159 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 22:10:31,160 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 10 [2019-11-15 22:10:31,160 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023715761] [2019-11-15 22:10:31,160 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-15 22:10:31,161 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 22:10:31,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-15 22:10:31,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2019-11-15 22:10:31,161 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand 10 states. [2019-11-15 22:10:31,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 22:10:31,246 INFO L93 Difference]: Finished difference Result 57 states and 61 transitions. [2019-11-15 22:10:31,247 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-15 22:10:31,247 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 36 [2019-11-15 22:10:31,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 22:10:31,248 INFO L225 Difference]: With dead ends: 57 [2019-11-15 22:10:31,248 INFO L226 Difference]: Without dead ends: 57 [2019-11-15 22:10:31,248 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2019-11-15 22:10:31,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2019-11-15 22:10:31,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 54. [2019-11-15 22:10:31,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2019-11-15 22:10:31,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 58 transitions. [2019-11-15 22:10:31,252 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 58 transitions. Word has length 36 [2019-11-15 22:10:31,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 22:10:31,253 INFO L462 AbstractCegarLoop]: Abstraction has 54 states and 58 transitions. [2019-11-15 22:10:31,253 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-15 22:10:31,253 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 58 transitions. [2019-11-15 22:10:31,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2019-11-15 22:10:31,254 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:10:31,254 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 22:10:31,460 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 22:10:31,461 INFO L410 AbstractCegarLoop]: === Iteration 12 === [mainErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION]=== [2019-11-15 22:10:31,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:10:31,461 INFO L82 PathProgramCache]: Analyzing trace with hash -1483321343, now seen corresponding path program 3 times [2019-11-15 22:10:31,461 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:10:31,462 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941687620] [2019-11-15 22:10:31,462 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:10:31,462 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:10:31,462 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:10:31,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:10:31,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:10:31,600 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-15 22:10:31,601 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941687620] [2019-11-15 22:10:31,601 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1244981186] [2019-11-15 22:10:31,601 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d526ea11-d1e8-4a1e-9774-3bd05e924e63/bin/uautomizer/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 22:10:31,652 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-11-15 22:10:31,652 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 22:10:31,653 INFO L256 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-15 22:10:31,655 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 22:10:31,662 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-15 22:10:31,662 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-15 22:10:31,670 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 22:10:31,671 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-15 22:10:31,671 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2019-11-15 22:10:31,783 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2019-11-15 22:10:31,784 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-15 22:10:31,784 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 14 [2019-11-15 22:10:31,784 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034845418] [2019-11-15 22:10:31,784 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-15 22:10:31,785 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 22:10:31,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-15 22:10:31,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2019-11-15 22:10:31,785 INFO L87 Difference]: Start difference. First operand 54 states and 58 transitions. Second operand 6 states. [2019-11-15 22:10:31,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 22:10:31,900 INFO L93 Difference]: Finished difference Result 54 states and 58 transitions. [2019-11-15 22:10:31,901 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-15 22:10:31,901 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 40 [2019-11-15 22:10:31,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 22:10:31,902 INFO L225 Difference]: With dead ends: 54 [2019-11-15 22:10:31,902 INFO L226 Difference]: Without dead ends: 0 [2019-11-15 22:10:31,902 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2019-11-15 22:10:31,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-15 22:10:31,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-15 22:10:31,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-15 22:10:31,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-15 22:10:31,903 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 40 [2019-11-15 22:10:31,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 22:10:31,903 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-15 22:10:31,903 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-15 22:10:31,903 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-15 22:10:31,903 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-15 22:10:32,104 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 22:10:32,108 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.11 10:10:32 BoogieIcfgContainer [2019-11-15 22:10:32,108 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-15 22:10:32,109 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-15 22:10:32,109 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-15 22:10:32,109 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-15 22:10:32,110 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 10:10:26" (3/4) ... [2019-11-15 22:10:32,113 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-15 22:10:32,119 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2019-11-15 22:10:32,120 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2019-11-15 22:10:32,124 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2019-11-15 22:10:32,124 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2019-11-15 22:10:32,125 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-15 22:10:32,193 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_d526ea11-d1e8-4a1e-9774-3bd05e924e63/bin/uautomizer/witness.graphml [2019-11-15 22:10:32,193 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-15 22:10:32,195 INFO L168 Benchmark]: Toolchain (without parser) took 6535.67 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 128.5 MB). Free memory was 944.7 MB in the beginning and 961.1 MB in the end (delta: -16.4 MB). Peak memory consumption was 112.0 MB. Max. memory is 11.5 GB. [2019-11-15 22:10:32,195 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 22:10:32,196 INFO L168 Benchmark]: CACSL2BoogieTranslator took 380.23 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 128.5 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -178.6 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. [2019-11-15 22:10:32,196 INFO L168 Benchmark]: Boogie Preprocessor took 35.85 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 22:10:32,197 INFO L168 Benchmark]: RCFGBuilder took 340.70 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: 23.7 MB). Peak memory consumption was 23.7 MB. Max. memory is 11.5 GB. [2019-11-15 22:10:32,197 INFO L168 Benchmark]: TraceAbstraction took 5684.21 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 962.8 MB in the end (delta: 136.7 MB). Peak memory consumption was 136.7 MB. Max. memory is 11.5 GB. [2019-11-15 22:10:32,198 INFO L168 Benchmark]: Witness Printer took 84.72 ms. Allocated memory is still 1.2 GB. Free memory was 962.8 MB in the beginning and 961.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. [2019-11-15 22:10:32,200 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 380.23 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 128.5 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -178.6 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 35.85 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 340.70 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: 23.7 MB). Peak memory consumption was 23.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 5684.21 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 962.8 MB in the end (delta: 136.7 MB). Peak memory consumption was 136.7 MB. Max. memory is 11.5 GB. * Witness Printer took 84.72 ms. Allocated memory is still 1.2 GB. Free memory was 962.8 MB in the beginning and 961.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 18]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 22]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 15]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 22]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 22]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 10]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 15]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 22]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - AllSpecificationsHoldResult: All specifications hold 9 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 34 locations, 9 error locations. Result: SAFE, OverallTime: 5.6s, OverallIterations: 12, TraceHistogramMax: 6, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 268 SDtfs, 159 SDslu, 585 SDs, 0 SdLazy, 555 SolverSat, 29 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 312 GetRequests, 237 SyntacticMatches, 2 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=54occurred in iteration=11, 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, 12 MinimizatonAttempts, 24 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 504 NumberOfCodeBlocks, 456 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 483 ConstructedInterpolants, 1 QuantifiedInterpolants, 58570 SizeOfPredicates, 5 NumberOfNonLiveVariables, 652 ConjunctsInSsa, 58 ConjunctsInUnsatCore, 21 InterpolantComputations, 7 PerfectInterpolantSequences, 150/459 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...