./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_352b56b8-45c0-4d67-bb09-11185d4b82b0/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_352b56b8-45c0-4d67-bb09-11185d4b82b0/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_352b56b8-45c0-4d67-bb09-11185d4b82b0/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_352b56b8-45c0-4d67-bb09-11185d4b82b0/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength.c -s /tmp/vcloud-vcloud-master/worker/run_dir_352b56b8-45c0-4d67-bb09-11185d4b82b0/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_352b56b8-45c0-4d67-bb09-11185d4b82b0/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a4e278d158dd9e8a83bb0a2afcbaa26c6819a0f8 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 22:41:54,661 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-15 22:41:54,663 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-15 22:41:54,677 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-15 22:41:54,677 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-15 22:41:54,679 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-15 22:41:54,681 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-15 22:41:54,690 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-15 22:41:54,694 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-15 22:41:54,699 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-15 22:41:54,700 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-15 22:41:54,702 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-15 22:41:54,702 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-15 22:41:54,704 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-15 22:41:54,705 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-15 22:41:54,706 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-15 22:41:54,707 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-15 22:41:54,708 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-15 22:41:54,710 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-15 22:41:54,714 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-15 22:41:54,717 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-15 22:41:54,719 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-15 22:41:54,721 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-15 22:41:54,722 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-15 22:41:54,724 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-15 22:41:54,724 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-15 22:41:54,725 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-15 22:41:54,726 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-15 22:41:54,727 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-15 22:41:54,728 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-15 22:41:54,728 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-15 22:41:54,728 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-15 22:41:54,729 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-15 22:41:54,730 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-15 22:41:54,731 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-15 22:41:54,731 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-15 22:41:54,732 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-15 22:41:54,732 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-15 22:41:54,732 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-15 22:41:54,733 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-15 22:41:54,734 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-15 22:41:54,735 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_352b56b8-45c0-4d67-bb09-11185d4b82b0/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2019-11-15 22:41:54,760 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-15 22:41:54,770 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-15 22:41:54,772 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-15 22:41:54,772 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-15 22:41:54,772 INFO L138 SettingsManager]: * Use SBE=true [2019-11-15 22:41:54,773 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-15 22:41:54,773 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-15 22:41:54,773 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-15 22:41:54,773 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-15 22:41:54,774 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-15 22:41:54,774 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-15 22:41:54,774 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-11-15 22:41:54,774 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-11-15 22:41:54,775 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-11-15 22:41:54,775 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-15 22:41:54,775 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-15 22:41:54,775 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-15 22:41:54,776 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-15 22:41:54,776 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-15 22:41:54,777 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-15 22:41:54,777 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-15 22:41:54,777 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-15 22:41:54,777 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-15 22:41:54,778 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-15 22:41:54,778 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-15 22:41:54,778 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-15 22:41:54,779 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_352b56b8-45c0-4d67-bb09-11185d4b82b0/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a4e278d158dd9e8a83bb0a2afcbaa26c6819a0f8 [2019-11-15 22:41:54,812 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-15 22:41:54,826 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-15 22:41:54,830 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-15 22:41:54,832 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-15 22:41:54,832 INFO L275 PluginConnector]: CDTParser initialized [2019-11-15 22:41:54,833 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_352b56b8-45c0-4d67-bb09-11185d4b82b0/bin/uautomizer/../../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength.c [2019-11-15 22:41:54,894 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_352b56b8-45c0-4d67-bb09-11185d4b82b0/bin/uautomizer/data/247ab8865/f0aee5c74bb04f308ec1cad04e663166/FLAG4c6cff985 [2019-11-15 22:41:55,291 INFO L306 CDTParser]: Found 1 translation units. [2019-11-15 22:41:55,292 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_352b56b8-45c0-4d67-bb09-11185d4b82b0/sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength.c [2019-11-15 22:41:55,298 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_352b56b8-45c0-4d67-bb09-11185d4b82b0/bin/uautomizer/data/247ab8865/f0aee5c74bb04f308ec1cad04e663166/FLAG4c6cff985 [2019-11-15 22:41:55,721 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_352b56b8-45c0-4d67-bb09-11185d4b82b0/bin/uautomizer/data/247ab8865/f0aee5c74bb04f308ec1cad04e663166 [2019-11-15 22:41:55,724 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-15 22:41:55,725 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-15 22:41:55,725 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-15 22:41:55,726 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-15 22:41:55,729 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-15 22:41:55,730 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 10:41:55" (1/1) ... [2019-11-15 22:41:55,732 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7da7206b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:41:55, skipping insertion in model container [2019-11-15 22:41:55,733 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 10:41:55" (1/1) ... [2019-11-15 22:41:55,740 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-15 22:41:55,755 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-15 22:41:56,017 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 22:41:56,028 INFO L188 MainTranslator]: Completed pre-run [2019-11-15 22:41:56,052 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 22:41:56,068 INFO L192 MainTranslator]: Completed translation [2019-11-15 22:41:56,068 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:41:56 WrapperNode [2019-11-15 22:41:56,069 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-15 22:41:56,069 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-15 22:41:56,070 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-15 22:41:56,070 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-15 22:41:56,084 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:41:56" (1/1) ... [2019-11-15 22:41:56,084 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:41:56" (1/1) ... [2019-11-15 22:41:56,093 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:41:56" (1/1) ... [2019-11-15 22:41:56,093 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:41:56" (1/1) ... [2019-11-15 22:41:56,114 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:41:56" (1/1) ... [2019-11-15 22:41:56,119 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:41:56" (1/1) ... [2019-11-15 22:41:56,126 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:41:56" (1/1) ... [2019-11-15 22:41:56,130 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-15 22:41:56,131 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-15 22:41:56,131 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-15 22:41:56,131 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-15 22:41:56,132 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:41:56" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_352b56b8-45c0-4d67-bb09-11185d4b82b0/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 22:41:56,201 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-15 22:41:56,201 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-15 22:41:56,201 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2019-11-15 22:41:56,202 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-15 22:41:56,202 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2019-11-15 22:41:56,202 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-15 22:41:56,203 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-15 22:41:56,203 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-15 22:41:56,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-15 22:41:56,203 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-15 22:41:56,204 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-15 22:41:56,204 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-15 22:41:56,532 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-15 22:41:56,532 INFO L284 CfgBuilder]: Removed 3 assume(true) statements. [2019-11-15 22:41:56,533 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 10:41:56 BoogieIcfgContainer [2019-11-15 22:41:56,533 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-15 22:41:56,534 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-15 22:41:56,534 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-15 22:41:56,537 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-15 22:41:56,537 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.11 10:41:55" (1/3) ... [2019-11-15 22:41:56,538 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10396c59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 10:41:56, skipping insertion in model container [2019-11-15 22:41:56,538 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:41:56" (2/3) ... [2019-11-15 22:41:56,539 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10396c59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 10:41:56, skipping insertion in model container [2019-11-15 22:41:56,539 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 10:41:56" (3/3) ... [2019-11-15 22:41:56,540 INFO L109 eAbstractionObserver]: Analyzing ICFG ArraysOfVariableLength.c [2019-11-15 22:41:56,549 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-15 22:41:56,566 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 8 error locations. [2019-11-15 22:41:56,575 INFO L249 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2019-11-15 22:41:56,594 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-15 22:41:56,594 INFO L374 AbstractCegarLoop]: Hoare is false [2019-11-15 22:41:56,594 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-15 22:41:56,594 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-15 22:41:56,594 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-15 22:41:56,594 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-15 22:41:56,594 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-15 22:41:56,595 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-15 22:41:56,610 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2019-11-15 22:41:56,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-15 22:41:56,619 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:41:56,620 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 22:41:56,622 INFO L410 AbstractCegarLoop]: === Iteration 1 === [fooErr1REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION]=== [2019-11-15 22:41:56,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:41:56,627 INFO L82 PathProgramCache]: Analyzing trace with hash 1909189377, now seen corresponding path program 1 times [2019-11-15 22:41:56,635 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:41:56,635 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311999297] [2019-11-15 22:41:56,636 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:41:56,636 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:41:56,636 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:41:56,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:56,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:56,801 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 22:41:56,802 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311999297] [2019-11-15 22:41:56,802 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 22:41:56,803 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-15 22:41:56,803 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102659411] [2019-11-15 22:41:56,807 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-15 22:41:56,807 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 22:41:56,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-15 22:41:56,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-15 22:41:56,820 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 4 states. [2019-11-15 22:41:57,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 22:41:57,048 INFO L93 Difference]: Finished difference Result 58 states and 63 transitions. [2019-11-15 22:41:57,049 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-15 22:41:57,050 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2019-11-15 22:41:57,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 22:41:57,060 INFO L225 Difference]: With dead ends: 58 [2019-11-15 22:41:57,060 INFO L226 Difference]: Without dead ends: 54 [2019-11-15 22:41:57,062 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-15 22:41:57,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2019-11-15 22:41:57,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 39. [2019-11-15 22:41:57,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2019-11-15 22:41:57,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2019-11-15 22:41:57,101 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 10 [2019-11-15 22:41:57,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 22:41:57,102 INFO L462 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2019-11-15 22:41:57,102 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-15 22:41:57,102 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2019-11-15 22:41:57,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-15 22:41:57,103 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:41:57,105 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 22:41:57,105 INFO L410 AbstractCegarLoop]: === Iteration 2 === [fooErr1REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION]=== [2019-11-15 22:41:57,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:41:57,105 INFO L82 PathProgramCache]: Analyzing trace with hash -941983064, now seen corresponding path program 1 times [2019-11-15 22:41:57,106 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:41:57,106 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615733513] [2019-11-15 22:41:57,106 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:41:57,106 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:41:57,106 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:41:57,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:57,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:57,209 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 22:41:57,209 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615733513] [2019-11-15 22:41:57,209 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 22:41:57,209 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-15 22:41:57,210 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451065187] [2019-11-15 22:41:57,211 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-15 22:41:57,211 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 22:41:57,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-15 22:41:57,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-15 22:41:57,212 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand 6 states. [2019-11-15 22:41:57,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 22:41:57,436 INFO L93 Difference]: Finished difference Result 59 states and 62 transitions. [2019-11-15 22:41:57,437 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-15 22:41:57,437 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2019-11-15 22:41:57,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 22:41:57,438 INFO L225 Difference]: With dead ends: 59 [2019-11-15 22:41:57,439 INFO L226 Difference]: Without dead ends: 59 [2019-11-15 22:41:57,439 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-11-15 22:41:57,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2019-11-15 22:41:57,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 45. [2019-11-15 22:41:57,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2019-11-15 22:41:57,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 48 transitions. [2019-11-15 22:41:57,447 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 48 transitions. Word has length 11 [2019-11-15 22:41:57,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 22:41:57,447 INFO L462 AbstractCegarLoop]: Abstraction has 45 states and 48 transitions. [2019-11-15 22:41:57,448 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-15 22:41:57,448 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 48 transitions. [2019-11-15 22:41:57,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-15 22:41:57,448 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:41:57,449 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 22:41:57,449 INFO L410 AbstractCegarLoop]: === Iteration 3 === [fooErr1REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION]=== [2019-11-15 22:41:57,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:41:57,450 INFO L82 PathProgramCache]: Analyzing trace with hash 143250926, now seen corresponding path program 1 times [2019-11-15 22:41:57,450 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:41:57,450 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213434571] [2019-11-15 22:41:57,450 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:41:57,451 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:41:57,451 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:41:57,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:57,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:57,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:57,532 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 22:41:57,538 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213434571] [2019-11-15 22:41:57,538 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 22:41:57,539 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-15 22:41:57,539 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006004891] [2019-11-15 22:41:57,540 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-15 22:41:57,541 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 22:41:57,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-15 22:41:57,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-15 22:41:57,543 INFO L87 Difference]: Start difference. First operand 45 states and 48 transitions. Second operand 4 states. [2019-11-15 22:41:57,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 22:41:57,635 INFO L93 Difference]: Finished difference Result 43 states and 46 transitions. [2019-11-15 22:41:57,636 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-15 22:41:57,636 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2019-11-15 22:41:57,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 22:41:57,639 INFO L225 Difference]: With dead ends: 43 [2019-11-15 22:41:57,639 INFO L226 Difference]: Without dead ends: 43 [2019-11-15 22:41:57,639 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-15 22:41:57,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2019-11-15 22:41:57,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2019-11-15 22:41:57,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2019-11-15 22:41:57,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 46 transitions. [2019-11-15 22:41:57,652 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 46 transitions. Word has length 15 [2019-11-15 22:41:57,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 22:41:57,653 INFO L462 AbstractCegarLoop]: Abstraction has 43 states and 46 transitions. [2019-11-15 22:41:57,653 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-15 22:41:57,653 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 46 transitions. [2019-11-15 22:41:57,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-15 22:41:57,654 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:41:57,654 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 22:41:57,655 INFO L410 AbstractCegarLoop]: === Iteration 4 === [fooErr1REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION]=== [2019-11-15 22:41:57,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:41:57,655 INFO L82 PathProgramCache]: Analyzing trace with hash 143250927, now seen corresponding path program 1 times [2019-11-15 22:41:57,655 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:41:57,656 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941794145] [2019-11-15 22:41:57,656 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:41:57,656 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:41:57,656 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:41:57,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:57,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:57,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:57,728 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 22:41:57,729 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941794145] [2019-11-15 22:41:57,729 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 22:41:57,729 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-15 22:41:57,729 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714595162] [2019-11-15 22:41:57,730 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-15 22:41:57,730 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 22:41:57,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-15 22:41:57,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-15 22:41:57,731 INFO L87 Difference]: Start difference. First operand 43 states and 46 transitions. Second operand 4 states. [2019-11-15 22:41:57,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 22:41:57,855 INFO L93 Difference]: Finished difference Result 47 states and 50 transitions. [2019-11-15 22:41:57,855 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-15 22:41:57,855 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2019-11-15 22:41:57,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 22:41:57,856 INFO L225 Difference]: With dead ends: 47 [2019-11-15 22:41:57,856 INFO L226 Difference]: Without dead ends: 47 [2019-11-15 22:41:57,857 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-15 22:41:57,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2019-11-15 22:41:57,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 45. [2019-11-15 22:41:57,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2019-11-15 22:41:57,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 48 transitions. [2019-11-15 22:41:57,862 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 48 transitions. Word has length 15 [2019-11-15 22:41:57,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 22:41:57,863 INFO L462 AbstractCegarLoop]: Abstraction has 45 states and 48 transitions. [2019-11-15 22:41:57,863 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-15 22:41:57,863 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 48 transitions. [2019-11-15 22:41:57,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-11-15 22:41:57,864 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:41:57,864 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 22:41:57,864 INFO L410 AbstractCegarLoop]: === Iteration 5 === [fooErr1REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION]=== [2019-11-15 22:41:57,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:41:57,865 INFO L82 PathProgramCache]: Analyzing trace with hash -1902162976, now seen corresponding path program 1 times [2019-11-15 22:41:57,865 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:41:57,865 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297404524] [2019-11-15 22:41:57,865 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:41:57,866 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:41:57,866 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:41:57,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:57,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:57,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:57,922 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 22:41:57,923 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297404524] [2019-11-15 22:41:57,923 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1244842021] [2019-11-15 22:41:57,923 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_352b56b8-45c0-4d67-bb09-11185d4b82b0/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 22:41:57,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:57,978 INFO L256 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-15 22:41:57,984 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 22:41:58,032 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 22:41:58,032 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 22:41:58,032 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 6 [2019-11-15 22:41:58,033 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983419270] [2019-11-15 22:41:58,033 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-15 22:41:58,033 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 22:41:58,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-15 22:41:58,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-11-15 22:41:58,034 INFO L87 Difference]: Start difference. First operand 45 states and 48 transitions. Second operand 6 states. [2019-11-15 22:41:58,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 22:41:58,185 INFO L93 Difference]: Finished difference Result 69 states and 73 transitions. [2019-11-15 22:41:58,186 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-15 22:41:58,186 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2019-11-15 22:41:58,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 22:41:58,187 INFO L225 Difference]: With dead ends: 69 [2019-11-15 22:41:58,187 INFO L226 Difference]: Without dead ends: 69 [2019-11-15 22:41:58,188 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-11-15 22:41:58,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2019-11-15 22:41:58,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 52. [2019-11-15 22:41:58,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2019-11-15 22:41:58,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 57 transitions. [2019-11-15 22:41:58,198 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 57 transitions. Word has length 21 [2019-11-15 22:41:58,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 22:41:58,199 INFO L462 AbstractCegarLoop]: Abstraction has 52 states and 57 transitions. [2019-11-15 22:41:58,199 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-15 22:41:58,199 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 57 transitions. [2019-11-15 22:41:58,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-11-15 22:41:58,200 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:41:58,201 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 22:41:58,401 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 22:41:58,402 INFO L410 AbstractCegarLoop]: === Iteration 6 === [fooErr1REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION]=== [2019-11-15 22:41:58,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:41:58,402 INFO L82 PathProgramCache]: Analyzing trace with hash 1165178250, now seen corresponding path program 1 times [2019-11-15 22:41:58,402 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:41:58,402 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364445555] [2019-11-15 22:41:58,403 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:41:58,403 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:41:58,403 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:41:58,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:58,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:58,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:58,502 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-15 22:41:58,503 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364445555] [2019-11-15 22:41:58,503 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 22:41:58,504 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-15 22:41:58,504 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177417554] [2019-11-15 22:41:58,504 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-15 22:41:58,505 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 22:41:58,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-15 22:41:58,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-15 22:41:58,506 INFO L87 Difference]: Start difference. First operand 52 states and 57 transitions. Second operand 6 states. [2019-11-15 22:41:58,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 22:41:58,683 INFO L93 Difference]: Finished difference Result 62 states and 68 transitions. [2019-11-15 22:41:58,683 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-15 22:41:58,683 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2019-11-15 22:41:58,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 22:41:58,684 INFO L225 Difference]: With dead ends: 62 [2019-11-15 22:41:58,685 INFO L226 Difference]: Without dead ends: 62 [2019-11-15 22:41:58,685 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-11-15 22:41:58,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2019-11-15 22:41:58,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 54. [2019-11-15 22:41:58,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2019-11-15 22:41:58,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 60 transitions. [2019-11-15 22:41:58,696 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 60 transitions. Word has length 22 [2019-11-15 22:41:58,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 22:41:58,696 INFO L462 AbstractCegarLoop]: Abstraction has 54 states and 60 transitions. [2019-11-15 22:41:58,696 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-15 22:41:58,697 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 60 transitions. [2019-11-15 22:41:58,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-11-15 22:41:58,698 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:41:58,698 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 22:41:58,698 INFO L410 AbstractCegarLoop]: === Iteration 7 === [fooErr1REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION]=== [2019-11-15 22:41:58,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:41:58,699 INFO L82 PathProgramCache]: Analyzing trace with hash 1760787427, now seen corresponding path program 1 times [2019-11-15 22:41:58,699 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:41:58,699 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143222226] [2019-11-15 22:41:58,699 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:41:58,700 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:41:58,700 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:41:58,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:58,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:58,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:58,775 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 22:41:58,775 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143222226] [2019-11-15 22:41:58,776 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 22:41:58,776 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-15 22:41:58,776 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022615173] [2019-11-15 22:41:58,777 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-15 22:41:58,777 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 22:41:58,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-15 22:41:58,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-15 22:41:58,778 INFO L87 Difference]: Start difference. First operand 54 states and 60 transitions. Second operand 6 states. [2019-11-15 22:41:58,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 22:41:58,904 INFO L93 Difference]: Finished difference Result 53 states and 59 transitions. [2019-11-15 22:41:58,904 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-15 22:41:58,904 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2019-11-15 22:41:58,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 22:41:58,905 INFO L225 Difference]: With dead ends: 53 [2019-11-15 22:41:58,905 INFO L226 Difference]: Without dead ends: 53 [2019-11-15 22:41:58,905 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-11-15 22:41:58,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2019-11-15 22:41:58,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2019-11-15 22:41:58,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2019-11-15 22:41:58,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 59 transitions. [2019-11-15 22:41:58,913 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 59 transitions. Word has length 23 [2019-11-15 22:41:58,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 22:41:58,914 INFO L462 AbstractCegarLoop]: Abstraction has 53 states and 59 transitions. [2019-11-15 22:41:58,914 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-15 22:41:58,914 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 59 transitions. [2019-11-15 22:41:58,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-11-15 22:41:58,915 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:41:58,915 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 22:41:58,915 INFO L410 AbstractCegarLoop]: === Iteration 8 === [fooErr1REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION]=== [2019-11-15 22:41:58,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:41:58,916 INFO L82 PathProgramCache]: Analyzing trace with hash 1760787428, now seen corresponding path program 1 times [2019-11-15 22:41:58,916 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:41:58,916 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156536078] [2019-11-15 22:41:58,916 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:41:58,916 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:41:58,917 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:41:58,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:59,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:59,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:59,107 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-15 22:41:59,109 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156536078] [2019-11-15 22:41:59,109 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 22:41:59,109 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-11-15 22:41:59,109 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878565368] [2019-11-15 22:41:59,110 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-15 22:41:59,110 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 22:41:59,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-15 22:41:59,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-11-15 22:41:59,111 INFO L87 Difference]: Start difference. First operand 53 states and 59 transitions. Second operand 10 states. [2019-11-15 22:41:59,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 22:41:59,454 INFO L93 Difference]: Finished difference Result 55 states and 61 transitions. [2019-11-15 22:41:59,454 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-15 22:41:59,454 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 23 [2019-11-15 22:41:59,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 22:41:59,455 INFO L225 Difference]: With dead ends: 55 [2019-11-15 22:41:59,455 INFO L226 Difference]: Without dead ends: 55 [2019-11-15 22:41:59,456 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 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 22:41:59,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2019-11-15 22:41:59,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 52. [2019-11-15 22:41:59,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2019-11-15 22:41:59,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 58 transitions. [2019-11-15 22:41:59,461 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 58 transitions. Word has length 23 [2019-11-15 22:41:59,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 22:41:59,461 INFO L462 AbstractCegarLoop]: Abstraction has 52 states and 58 transitions. [2019-11-15 22:41:59,461 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-15 22:41:59,461 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 58 transitions. [2019-11-15 22:41:59,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-11-15 22:41:59,462 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:41:59,462 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 22:41:59,462 INFO L410 AbstractCegarLoop]: === Iteration 9 === [fooErr1REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION]=== [2019-11-15 22:41:59,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:41:59,463 INFO L82 PathProgramCache]: Analyzing trace with hash 1134972881, now seen corresponding path program 1 times [2019-11-15 22:41:59,463 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:41:59,463 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103420396] [2019-11-15 22:41:59,463 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:41:59,463 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:41:59,464 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:41:59,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:59,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:59,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:59,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:59,571 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-11-15 22:41:59,576 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103420396] [2019-11-15 22:41:59,580 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 22:41:59,581 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-15 22:41:59,581 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083471465] [2019-11-15 22:41:59,581 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-15 22:41:59,582 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 22:41:59,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-15 22:41:59,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-11-15 22:41:59,583 INFO L87 Difference]: Start difference. First operand 52 states and 58 transitions. Second operand 7 states. [2019-11-15 22:41:59,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 22:41:59,708 INFO L93 Difference]: Finished difference Result 52 states and 57 transitions. [2019-11-15 22:41:59,708 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-15 22:41:59,708 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 26 [2019-11-15 22:41:59,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 22:41:59,709 INFO L225 Difference]: With dead ends: 52 [2019-11-15 22:41:59,709 INFO L226 Difference]: Without dead ends: 52 [2019-11-15 22:41:59,710 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-11-15 22:41:59,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2019-11-15 22:41:59,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 51. [2019-11-15 22:41:59,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2019-11-15 22:41:59,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 56 transitions. [2019-11-15 22:41:59,714 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 56 transitions. Word has length 26 [2019-11-15 22:41:59,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 22:41:59,715 INFO L462 AbstractCegarLoop]: Abstraction has 51 states and 56 transitions. [2019-11-15 22:41:59,715 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-15 22:41:59,718 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 56 transitions. [2019-11-15 22:41:59,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-11-15 22:41:59,722 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:41:59,722 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 22:41:59,722 INFO L410 AbstractCegarLoop]: === Iteration 10 === [fooErr1REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION]=== [2019-11-15 22:41:59,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:41:59,723 INFO L82 PathProgramCache]: Analyzing trace with hash -1992931931, now seen corresponding path program 1 times [2019-11-15 22:41:59,723 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:41:59,723 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094388377] [2019-11-15 22:41:59,724 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:41:59,724 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:41:59,724 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:41:59,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:59,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:59,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:59,855 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 22:41:59,856 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094388377] [2019-11-15 22:41:59,856 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [549757246] [2019-11-15 22:41:59,856 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_352b56b8-45c0-4d67-bb09-11185d4b82b0/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 22:41:59,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:41:59,899 INFO L256 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-15 22:41:59,901 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 22:41:59,939 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 22:41:59,939 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 22:41:59,940 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 12 [2019-11-15 22:41:59,940 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590728328] [2019-11-15 22:41:59,940 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-15 22:41:59,940 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 22:41:59,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-15 22:41:59,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2019-11-15 22:41:59,941 INFO L87 Difference]: Start difference. First operand 51 states and 56 transitions. Second operand 12 states. [2019-11-15 22:42:00,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 22:42:00,211 INFO L93 Difference]: Finished difference Result 78 states and 83 transitions. [2019-11-15 22:42:00,211 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-15 22:42:00,211 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 27 [2019-11-15 22:42:00,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 22:42:00,212 INFO L225 Difference]: With dead ends: 78 [2019-11-15 22:42:00,213 INFO L226 Difference]: Without dead ends: 78 [2019-11-15 22:42:00,213 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2019-11-15 22:42:00,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2019-11-15 22:42:00,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 62. [2019-11-15 22:42:00,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2019-11-15 22:42:00,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 68 transitions. [2019-11-15 22:42:00,220 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 68 transitions. Word has length 27 [2019-11-15 22:42:00,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 22:42:00,220 INFO L462 AbstractCegarLoop]: Abstraction has 62 states and 68 transitions. [2019-11-15 22:42:00,220 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-15 22:42:00,220 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 68 transitions. [2019-11-15 22:42:00,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-11-15 22:42:00,221 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:42:00,222 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 22:42:00,425 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 22:42:00,426 INFO L410 AbstractCegarLoop]: === Iteration 11 === [fooErr1REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION]=== [2019-11-15 22:42:00,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:42:00,426 INFO L82 PathProgramCache]: Analyzing trace with hash -1979886526, now seen corresponding path program 2 times [2019-11-15 22:42:00,426 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:42:00,427 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241512411] [2019-11-15 22:42:00,427 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:42:00,427 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:42:00,427 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:42:00,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:42:00,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:42:00,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:42:00,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:42:00,504 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-11-15 22:42:00,504 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241512411] [2019-11-15 22:42:00,504 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [156909744] [2019-11-15 22:42:00,505 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_352b56b8-45c0-4d67-bb09-11185d4b82b0/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 22:42:00,559 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2019-11-15 22:42:00,559 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 22:42:00,560 INFO L256 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-15 22:42:00,562 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 22:42:00,609 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 22:42:00,610 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-15 22:42:00,618 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 22:42:00,619 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-15 22:42:00,619 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-11-15 22:42:00,729 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-11-15 22:42:00,729 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-15 22:42:00,729 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 10 [2019-11-15 22:42:00,730 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636895584] [2019-11-15 22:42:00,730 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-15 22:42:00,730 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 22:42:00,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-15 22:42:00,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2019-11-15 22:42:00,730 INFO L87 Difference]: Start difference. First operand 62 states and 68 transitions. Second operand 6 states. [2019-11-15 22:42:00,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 22:42:00,775 INFO L93 Difference]: Finished difference Result 61 states and 67 transitions. [2019-11-15 22:42:00,779 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-15 22:42:00,779 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 32 [2019-11-15 22:42:00,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 22:42:00,780 INFO L225 Difference]: With dead ends: 61 [2019-11-15 22:42:00,780 INFO L226 Difference]: Without dead ends: 61 [2019-11-15 22:42:00,781 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 31 SyntacticMatches, 3 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2019-11-15 22:42:00,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2019-11-15 22:42:00,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2019-11-15 22:42:00,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2019-11-15 22:42:00,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 67 transitions. [2019-11-15 22:42:00,786 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 67 transitions. Word has length 32 [2019-11-15 22:42:00,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 22:42:00,787 INFO L462 AbstractCegarLoop]: Abstraction has 61 states and 67 transitions. [2019-11-15 22:42:00,787 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-15 22:42:00,787 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 67 transitions. [2019-11-15 22:42:00,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2019-11-15 22:42:00,788 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:42:00,788 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 22:42:00,991 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 22:42:00,992 INFO L410 AbstractCegarLoop]: === Iteration 12 === [fooErr1REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION]=== [2019-11-15 22:42:00,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:42:00,992 INFO L82 PathProgramCache]: Analyzing trace with hash -13619034, now seen corresponding path program 1 times [2019-11-15 22:42:00,992 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:42:00,992 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323317845] [2019-11-15 22:42:00,993 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:42:00,993 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:42:00,993 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:42:00,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:42:01,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:42:01,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:42:01,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:42:01,038 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-11-15 22:42:01,038 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323317845] [2019-11-15 22:42:01,039 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [968856009] [2019-11-15 22:42:01,039 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_352b56b8-45c0-4d67-bb09-11185d4b82b0/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 22:42:01,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:42:01,085 INFO L256 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-15 22:42:01,086 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 22:42:01,144 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-15 22:42:01,145 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-15 22:42:01,145 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2019-11-15 22:42:01,145 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672024411] [2019-11-15 22:42:01,145 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-15 22:42:01,146 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 22:42:01,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-15 22:42:01,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2019-11-15 22:42:01,146 INFO L87 Difference]: Start difference. First operand 61 states and 67 transitions. Second operand 6 states. [2019-11-15 22:42:01,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 22:42:01,281 INFO L93 Difference]: Finished difference Result 73 states and 76 transitions. [2019-11-15 22:42:01,281 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-15 22:42:01,282 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 35 [2019-11-15 22:42:01,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 22:42:01,282 INFO L225 Difference]: With dead ends: 73 [2019-11-15 22:42:01,282 INFO L226 Difference]: Without dead ends: 67 [2019-11-15 22:42:01,283 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2019-11-15 22:42:01,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2019-11-15 22:42:01,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 61. [2019-11-15 22:42:01,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2019-11-15 22:42:01,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 65 transitions. [2019-11-15 22:42:01,288 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 65 transitions. Word has length 35 [2019-11-15 22:42:01,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 22:42:01,288 INFO L462 AbstractCegarLoop]: Abstraction has 61 states and 65 transitions. [2019-11-15 22:42:01,288 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-15 22:42:01,288 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 65 transitions. [2019-11-15 22:42:01,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2019-11-15 22:42:01,289 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:42:01,289 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 22:42:01,492 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 22:42:01,492 INFO L410 AbstractCegarLoop]: === Iteration 13 === [fooErr1REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION]=== [2019-11-15 22:42:01,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:42:01,493 INFO L82 PathProgramCache]: Analyzing trace with hash -548707221, now seen corresponding path program 1 times [2019-11-15 22:42:01,493 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:42:01,493 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83126995] [2019-11-15 22:42:01,493 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:42:01,493 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:42:01,493 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:42:01,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:42:01,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:42:01,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:42:01,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:42:01,550 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-11-15 22:42:01,551 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83126995] [2019-11-15 22:42:01,551 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1931370751] [2019-11-15 22:42:01,551 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_352b56b8-45c0-4d67-bb09-11185d4b82b0/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 22:42:01,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:42:01,599 INFO L256 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-15 22:42:01,601 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 22:42:01,617 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-11-15 22:42:01,621 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 22:42:01,621 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 7 [2019-11-15 22:42:01,622 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761438114] [2019-11-15 22:42:01,622 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-15 22:42:01,624 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 22:42:01,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-15 22:42:01,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-11-15 22:42:01,625 INFO L87 Difference]: Start difference. First operand 61 states and 65 transitions. Second operand 7 states. [2019-11-15 22:42:01,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 22:42:01,744 INFO L93 Difference]: Finished difference Result 87 states and 91 transitions. [2019-11-15 22:42:01,745 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-15 22:42:01,745 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 40 [2019-11-15 22:42:01,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 22:42:01,746 INFO L225 Difference]: With dead ends: 87 [2019-11-15 22:42:01,746 INFO L226 Difference]: Without dead ends: 87 [2019-11-15 22:42:01,746 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 45 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 22:42:01,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2019-11-15 22:42:01,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 70. [2019-11-15 22:42:01,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2019-11-15 22:42:01,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 75 transitions. [2019-11-15 22:42:01,751 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 75 transitions. Word has length 40 [2019-11-15 22:42:01,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 22:42:01,751 INFO L462 AbstractCegarLoop]: Abstraction has 70 states and 75 transitions. [2019-11-15 22:42:01,751 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-15 22:42:01,751 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 75 transitions. [2019-11-15 22:42:01,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2019-11-15 22:42:01,752 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:42:01,752 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 22:42:01,952 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 22:42:01,953 INFO L410 AbstractCegarLoop]: === Iteration 14 === [fooErr1REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION]=== [2019-11-15 22:42:01,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:42:01,953 INFO L82 PathProgramCache]: Analyzing trace with hash -174164318, now seen corresponding path program 2 times [2019-11-15 22:42:01,953 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:42:01,953 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587788400] [2019-11-15 22:42:01,953 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:42:01,953 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:42:01,954 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:42:01,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:42:02,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:42:02,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:42:02,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:42:02,064 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2019-11-15 22:42:02,064 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587788400] [2019-11-15 22:42:02,064 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1920573445] [2019-11-15 22:42:02,064 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_352b56b8-45c0-4d67-bb09-11185d4b82b0/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 22:42:02,139 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-15 22:42:02,139 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 22:42:02,140 INFO L256 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-15 22:42:02,142 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 22:42:02,149 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2019-11-15 22:42:02,150 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 22:42:02,150 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 7 [2019-11-15 22:42:02,150 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412070764] [2019-11-15 22:42:02,150 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-15 22:42:02,150 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 22:42:02,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-15 22:42:02,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-11-15 22:42:02,151 INFO L87 Difference]: Start difference. First operand 70 states and 75 transitions. Second operand 8 states. [2019-11-15 22:42:02,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 22:42:02,342 INFO L93 Difference]: Finished difference Result 72 states and 77 transitions. [2019-11-15 22:42:02,342 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-15 22:42:02,343 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 43 [2019-11-15 22:42:02,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 22:42:02,344 INFO L225 Difference]: With dead ends: 72 [2019-11-15 22:42:02,344 INFO L226 Difference]: Without dead ends: 72 [2019-11-15 22:42:02,344 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2019-11-15 22:42:02,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2019-11-15 22:42:02,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 68. [2019-11-15 22:42:02,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2019-11-15 22:42:02,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 73 transitions. [2019-11-15 22:42:02,348 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 73 transitions. Word has length 43 [2019-11-15 22:42:02,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 22:42:02,348 INFO L462 AbstractCegarLoop]: Abstraction has 68 states and 73 transitions. [2019-11-15 22:42:02,348 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-15 22:42:02,348 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 73 transitions. [2019-11-15 22:42:02,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2019-11-15 22:42:02,349 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:42:02,349 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 22:42:02,559 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 22:42:02,560 INFO L410 AbstractCegarLoop]: === Iteration 15 === [fooErr1REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION]=== [2019-11-15 22:42:02,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:42:02,560 INFO L82 PathProgramCache]: Analyzing trace with hash -1444841842, now seen corresponding path program 2 times [2019-11-15 22:42:02,560 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:42:02,560 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064068346] [2019-11-15 22:42:02,560 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:42:02,560 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:42:02,560 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:42:02,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:42:02,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:42:02,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:42:02,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:42:02,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:42:02,637 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-11-15 22:42:02,638 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064068346] [2019-11-15 22:42:02,638 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [640912472] [2019-11-15 22:42:02,638 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_352b56b8-45c0-4d67-bb09-11185d4b82b0/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 22:42:02,684 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2019-11-15 22:42:02,684 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 22:42:02,685 INFO L256 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-15 22:42:02,688 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 22:42:02,719 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2019-11-15 22:42:02,720 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-15 22:42:02,727 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 22:42:02,728 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-15 22:42:02,728 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:12, output treesize:5 [2019-11-15 22:42:02,757 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2019-11-15 22:42:02,758 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-15 22:42:02,760 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 22:42:02,761 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-15 22:42:02,761 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:12, output treesize:5 [2019-11-15 22:42:02,797 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2019-11-15 22:42:02,797 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-15 22:42:02,799 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 22:42:02,800 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-15 22:42:02,800 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:12, output treesize:5 [2019-11-15 22:42:02,881 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2019-11-15 22:42:02,881 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-15 22:42:02,882 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 11 [2019-11-15 22:42:02,882 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249717489] [2019-11-15 22:42:02,882 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-15 22:42:02,883 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 22:42:02,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-15 22:42:02,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2019-11-15 22:42:02,884 INFO L87 Difference]: Start difference. First operand 68 states and 73 transitions. Second operand 6 states. [2019-11-15 22:42:02,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 22:42:02,974 INFO L93 Difference]: Finished difference Result 67 states and 72 transitions. [2019-11-15 22:42:02,974 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-15 22:42:02,974 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 56 [2019-11-15 22:42:02,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 22:42:02,975 INFO L225 Difference]: With dead ends: 67 [2019-11-15 22:42:02,975 INFO L226 Difference]: Without dead ends: 0 [2019-11-15 22:42:02,975 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 55 SyntacticMatches, 5 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2019-11-15 22:42:02,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-15 22:42:02,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-15 22:42:02,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-15 22:42:02,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-15 22:42:02,976 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 56 [2019-11-15 22:42:02,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 22:42:02,976 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-15 22:42:02,976 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-15 22:42:02,976 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-15 22:42:02,977 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-15 22:42:03,177 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 22:42:03,181 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.11 10:42:03 BoogieIcfgContainer [2019-11-15 22:42:03,181 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-15 22:42:03,182 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-15 22:42:03,182 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-15 22:42:03,182 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-15 22:42:03,183 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 10:41:56" (3/4) ... [2019-11-15 22:42:03,186 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-15 22:42:03,192 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2019-11-15 22:42:03,192 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure foo [2019-11-15 22:42:03,193 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2019-11-15 22:42:03,197 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2019-11-15 22:42:03,198 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2019-11-15 22:42:03,198 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-11-15 22:42:03,198 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-15 22:42:03,243 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_352b56b8-45c0-4d67-bb09-11185d4b82b0/bin/uautomizer/witness.graphml [2019-11-15 22:42:03,244 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-15 22:42:03,245 INFO L168 Benchmark]: Toolchain (without parser) took 7520.52 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 215.0 MB). Free memory was 952.8 MB in the beginning and 1.1 GB in the end (delta: -144.2 MB). Peak memory consumption was 70.8 MB. Max. memory is 11.5 GB. [2019-11-15 22:42:03,245 INFO L168 Benchmark]: CDTParser took 0.24 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 22:42:03,246 INFO L168 Benchmark]: CACSL2BoogieTranslator took 343.70 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 179.3 MB). Free memory was 952.8 MB in the beginning and 1.2 GB in the end (delta: -221.5 MB). Peak memory consumption was 24.1 MB. Max. memory is 11.5 GB. [2019-11-15 22:42:03,246 INFO L168 Benchmark]: Boogie Preprocessor took 60.90 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 22:42:03,247 INFO L168 Benchmark]: RCFGBuilder took 402.93 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 23.7 MB). Peak memory consumption was 23.7 MB. Max. memory is 11.5 GB. [2019-11-15 22:42:03,247 INFO L168 Benchmark]: TraceAbstraction took 6646.99 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 35.7 MB). Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 51.6 MB). Peak memory consumption was 87.2 MB. Max. memory is 11.5 GB. [2019-11-15 22:42:03,248 INFO L168 Benchmark]: Witness Printer took 62.14 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: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 11.5 GB. [2019-11-15 22:42:03,250 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 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 343.70 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 179.3 MB). Free memory was 952.8 MB in the beginning and 1.2 GB in the end (delta: -221.5 MB). Peak memory consumption was 24.1 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 60.90 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 402.93 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 23.7 MB). Peak memory consumption was 23.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 6646.99 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 35.7 MB). Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 51.6 MB). Peak memory consumption was 87.2 MB. Max. memory is 11.5 GB. * Witness Printer took 62.14 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: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 15]: 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: 15]: array index is always in bounds For all program executions holds that array index is always in bounds at this location - PositiveResult [Line: 23]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 23]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 20]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 26]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 26]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 40 locations, 8 error locations. Result: SAFE, OverallTime: 6.5s, OverallIterations: 15, TraceHistogramMax: 3, AutomataDifference: 2.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 353 SDtfs, 602 SDslu, 559 SDs, 0 SdLazy, 1287 SolverSat, 121 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 420 GetRequests, 306 SyntacticMatches, 9 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=70occurred in iteration=13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 15 MinimizatonAttempts, 103 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 653 NumberOfCodeBlocks, 588 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 631 ConstructedInterpolants, 36 QuantifiedInterpolants, 74548 SizeOfPredicates, 11 NumberOfNonLiveVariables, 704 ConjunctsInSsa, 40 ConjunctsInUnsatCore, 22 InterpolantComputations, 11 PerfectInterpolantSequences, 215/277 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...