./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/ArraysWithLenghtAtDeclaration.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/working_dir_7d0edd2b-b599-4c8a-b3e3-a802fab00c81/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_7d0edd2b-b599-4c8a-b3e3-a802fab00c81/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_7d0edd2b-b599-4c8a-b3e3-a802fab00c81/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_7d0edd2b-b599-4c8a-b3e3-a802fab00c81/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/ArraysWithLenghtAtDeclaration.c -s /tmp/vcloud-vcloud-master/worker/working_dir_7d0edd2b-b599-4c8a-b3e3-a802fab00c81/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_7d0edd2b-b599-4c8a-b3e3-a802fab00c81/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 56b28f59847d63942ec468b0c95f39e5b8c0763a ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-10-22 09:01:35,129 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 09:01:35,131 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 09:01:35,139 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 09:01:35,140 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 09:01:35,140 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 09:01:35,141 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 09:01:35,143 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 09:01:35,144 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 09:01:35,144 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 09:01:35,145 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 09:01:35,146 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 09:01:35,146 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 09:01:35,147 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 09:01:35,148 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 09:01:35,149 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 09:01:35,149 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 09:01:35,150 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 09:01:35,151 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 09:01:35,152 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 09:01:35,153 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 09:01:35,154 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 09:01:35,155 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 09:01:35,156 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 09:01:35,157 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 09:01:35,158 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 09:01:35,158 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 09:01:35,158 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 09:01:35,159 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 09:01:35,160 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 09:01:35,160 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 09:01:35,160 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 09:01:35,161 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 09:01:35,161 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 09:01:35,162 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 09:01:35,162 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 09:01:35,163 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 09:01:35,163 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 09:01:35,163 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 09:01:35,164 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 09:01:35,164 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 09:01:35,165 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_7d0edd2b-b599-4c8a-b3e3-a802fab00c81/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2019-10-22 09:01:35,175 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 09:01:35,176 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 09:01:35,177 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 09:01:35,177 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 09:01:35,177 INFO L138 SettingsManager]: * Use SBE=true [2019-10-22 09:01:35,177 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 09:01:35,177 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 09:01:35,177 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-10-22 09:01:35,178 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 09:01:35,178 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 09:01:35,178 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 09:01:35,178 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-10-22 09:01:35,178 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-10-22 09:01:35,178 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-10-22 09:01:35,178 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 09:01:35,179 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 09:01:35,179 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 09:01:35,179 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 09:01:35,179 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 09:01:35,179 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 09:01:35,179 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 09:01:35,179 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 09:01:35,180 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 09:01:35,180 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 09:01:35,180 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-22 09:01:35,180 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 09:01:35,180 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/working_dir_7d0edd2b-b599-4c8a-b3e3-a802fab00c81/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 -> 56b28f59847d63942ec468b0c95f39e5b8c0763a [2019-10-22 09:01:35,210 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 09:01:35,222 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 09:01:35,228 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 09:01:35,229 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 09:01:35,230 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 09:01:35,230 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_7d0edd2b-b599-4c8a-b3e3-a802fab00c81/bin/uautomizer/../../sv-benchmarks/c/ldv-memsafety/ArraysWithLenghtAtDeclaration.c [2019-10-22 09:01:35,277 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_7d0edd2b-b599-4c8a-b3e3-a802fab00c81/bin/uautomizer/data/50388d9a0/5409a116a53e4e3db9b46b495a2b214a/FLAGb53bf3f0d [2019-10-22 09:01:35,688 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 09:01:35,688 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_7d0edd2b-b599-4c8a-b3e3-a802fab00c81/sv-benchmarks/c/ldv-memsafety/ArraysWithLenghtAtDeclaration.c [2019-10-22 09:01:35,694 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_7d0edd2b-b599-4c8a-b3e3-a802fab00c81/bin/uautomizer/data/50388d9a0/5409a116a53e4e3db9b46b495a2b214a/FLAGb53bf3f0d [2019-10-22 09:01:36,086 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_7d0edd2b-b599-4c8a-b3e3-a802fab00c81/bin/uautomizer/data/50388d9a0/5409a116a53e4e3db9b46b495a2b214a [2019-10-22 09:01:36,088 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 09:01:36,089 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-10-22 09:01:36,090 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 09:01:36,090 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 09:01:36,094 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 09:01:36,094 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 09:01:36" (1/1) ... [2019-10-22 09:01:36,097 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@620c936b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:36, skipping insertion in model container [2019-10-22 09:01:36,097 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 09:01:36" (1/1) ... [2019-10-22 09:01:36,104 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 09:01:36,117 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 09:01:36,239 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 09:01:36,248 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 09:01:36,316 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 09:01:36,329 INFO L192 MainTranslator]: Completed translation [2019-10-22 09:01:36,329 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:36 WrapperNode [2019-10-22 09:01:36,329 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 09:01:36,330 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 09:01:36,330 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 09:01:36,330 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 09:01:36,341 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:36" (1/1) ... [2019-10-22 09:01:36,342 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:36" (1/1) ... [2019-10-22 09:01:36,349 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:36" (1/1) ... [2019-10-22 09:01:36,349 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:36" (1/1) ... [2019-10-22 09:01:36,354 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:36" (1/1) ... [2019-10-22 09:01:36,359 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:36" (1/1) ... [2019-10-22 09:01:36,362 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:36" (1/1) ... [2019-10-22 09:01:36,364 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 09:01:36,364 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 09:01:36,365 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 09:01:36,365 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 09:01:36,366 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:36" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7d0edd2b-b599-4c8a-b3e3-a802fab00c81/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 [2019-10-22 09:01:36,411 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-22 09:01:36,411 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 09:01:36,411 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2019-10-22 09:01:36,411 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-22 09:01:36,411 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2019-10-22 09:01:36,411 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-22 09:01:36,411 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-22 09:01:36,412 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-22 09:01:36,412 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-22 09:01:36,412 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-22 09:01:36,412 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-22 09:01:36,412 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 09:01:36,609 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 09:01:36,609 INFO L284 CfgBuilder]: Removed 3 assume(true) statements. [2019-10-22 09:01:36,611 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:01:36 BoogieIcfgContainer [2019-10-22 09:01:36,611 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 09:01:36,612 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 09:01:36,612 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 09:01:36,614 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 09:01:36,615 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 09:01:36" (1/3) ... [2019-10-22 09:01:36,615 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8fcf58e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 09:01:36, skipping insertion in model container [2019-10-22 09:01:36,615 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:36" (2/3) ... [2019-10-22 09:01:36,616 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8fcf58e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 09:01:36, skipping insertion in model container [2019-10-22 09:01:36,616 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:01:36" (3/3) ... [2019-10-22 09:01:36,617 INFO L109 eAbstractionObserver]: Analyzing ICFG ArraysWithLenghtAtDeclaration.c [2019-10-22 09:01:36,626 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 09:01:36,632 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 8 error locations. [2019-10-22 09:01:36,643 INFO L249 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2019-10-22 09:01:36,668 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 09:01:36,668 INFO L374 AbstractCegarLoop]: Hoare is false [2019-10-22 09:01:36,669 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 09:01:36,669 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 09:01:36,669 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 09:01:36,669 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 09:01:36,669 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 09:01:36,669 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 09:01:36,695 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2019-10-22 09:01:36,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-22 09:01:36,721 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:01:36,722 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:01:36,726 INFO L410 AbstractCegarLoop]: === Iteration 1 === [fooErr2REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr1REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION]=== [2019-10-22 09:01:36,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:01:36,732 INFO L82 PathProgramCache]: Analyzing trace with hash 1909189377, now seen corresponding path program 1 times [2019-10-22 09:01:36,740 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:01:36,741 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986761252] [2019-10-22 09:01:36,741 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:36,742 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:36,742 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:01:36,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:36,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:36,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:01:36,886 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986761252] [2019-10-22 09:01:36,886 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:01:36,887 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-22 09:01:36,887 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421454749] [2019-10-22 09:01:36,891 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 09:01:36,891 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:01:36,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 09:01:36,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-22 09:01:36,902 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 4 states. [2019-10-22 09:01:37,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:01:37,050 INFO L93 Difference]: Finished difference Result 58 states and 63 transitions. [2019-10-22 09:01:37,050 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-22 09:01:37,052 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2019-10-22 09:01:37,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:01:37,060 INFO L225 Difference]: With dead ends: 58 [2019-10-22 09:01:37,060 INFO L226 Difference]: Without dead ends: 54 [2019-10-22 09:01:37,061 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 [2019-10-22 09:01:37,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2019-10-22 09:01:37,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 39. [2019-10-22 09:01:37,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2019-10-22 09:01:37,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2019-10-22 09:01:37,096 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 10 [2019-10-22 09:01:37,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:01:37,097 INFO L462 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2019-10-22 09:01:37,097 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 09:01:37,097 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2019-10-22 09:01:37,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-10-22 09:01:37,098 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:01:37,098 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:01:37,098 INFO L410 AbstractCegarLoop]: === Iteration 2 === [fooErr2REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr1REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION]=== [2019-10-22 09:01:37,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:01:37,098 INFO L82 PathProgramCache]: Analyzing trace with hash -941983064, now seen corresponding path program 1 times [2019-10-22 09:01:37,099 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:01:37,099 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012031510] [2019-10-22 09:01:37,099 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:37,099 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:37,099 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:01:37,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:37,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:37,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:01:37,168 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012031510] [2019-10-22 09:01:37,168 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:01:37,169 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 09:01:37,169 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249917585] [2019-10-22 09:01:37,170 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 09:01:37,170 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:01:37,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 09:01:37,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-22 09:01:37,171 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand 4 states. [2019-10-22 09:01:37,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:01:37,262 INFO L93 Difference]: Finished difference Result 49 states and 53 transitions. [2019-10-22 09:01:37,262 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-22 09:01:37,263 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-10-22 09:01:37,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:01:37,265 INFO L225 Difference]: With dead ends: 49 [2019-10-22 09:01:37,265 INFO L226 Difference]: Without dead ends: 49 [2019-10-22 09:01:37,266 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-22 09:01:37,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2019-10-22 09:01:37,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 41. [2019-10-22 09:01:37,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2019-10-22 09:01:37,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2019-10-22 09:01:37,270 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 11 [2019-10-22 09:01:37,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:01:37,271 INFO L462 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2019-10-22 09:01:37,271 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 09:01:37,271 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2019-10-22 09:01:37,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-10-22 09:01:37,271 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:01:37,271 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:01:37,272 INFO L410 AbstractCegarLoop]: === Iteration 3 === [fooErr2REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr1REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION]=== [2019-10-22 09:01:37,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:01:37,272 INFO L82 PathProgramCache]: Analyzing trace with hash 863296133, now seen corresponding path program 1 times [2019-10-22 09:01:37,272 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:01:37,272 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888250385] [2019-10-22 09:01:37,273 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:37,273 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:37,273 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:01:37,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:37,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:37,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:01:37,328 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888250385] [2019-10-22 09:01:37,328 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:01:37,328 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-22 09:01:37,328 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072618579] [2019-10-22 09:01:37,328 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-22 09:01:37,329 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:01:37,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-22 09:01:37,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-22 09:01:37,329 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand 6 states. [2019-10-22 09:01:37,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:01:37,474 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions. [2019-10-22 09:01:37,475 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 09:01:37,475 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2019-10-22 09:01:37,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:01:37,476 INFO L225 Difference]: With dead ends: 40 [2019-10-22 09:01:37,476 INFO L226 Difference]: Without dead ends: 40 [2019-10-22 09:01:37,476 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-10-22 09:01:37,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2019-10-22 09:01:37,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2019-10-22 09:01:37,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-10-22 09:01:37,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2019-10-22 09:01:37,480 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 12 [2019-10-22 09:01:37,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:01:37,481 INFO L462 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2019-10-22 09:01:37,481 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-22 09:01:37,481 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2019-10-22 09:01:37,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-10-22 09:01:37,481 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:01:37,482 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:01:37,482 INFO L410 AbstractCegarLoop]: === Iteration 4 === [fooErr2REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr1REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION]=== [2019-10-22 09:01:37,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:01:37,482 INFO L82 PathProgramCache]: Analyzing trace with hash 863296134, now seen corresponding path program 1 times [2019-10-22 09:01:37,482 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:01:37,483 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819591880] [2019-10-22 09:01:37,483 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:37,483 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:37,483 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:01:37,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:37,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:37,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:01:37,588 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819591880] [2019-10-22 09:01:37,589 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:01:37,589 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-22 09:01:37,589 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670600085] [2019-10-22 09:01:37,589 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-22 09:01:37,590 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:01:37,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-22 09:01:37,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-10-22 09:01:37,590 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand 7 states. [2019-10-22 09:01:37,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:01:37,742 INFO L93 Difference]: Finished difference Result 42 states and 46 transitions. [2019-10-22 09:01:37,743 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-22 09:01:37,743 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2019-10-22 09:01:37,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:01:37,744 INFO L225 Difference]: With dead ends: 42 [2019-10-22 09:01:37,744 INFO L226 Difference]: Without dead ends: 42 [2019-10-22 09:01:37,744 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2019-10-22 09:01:37,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2019-10-22 09:01:37,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 39. [2019-10-22 09:01:37,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2019-10-22 09:01:37,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2019-10-22 09:01:37,748 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 12 [2019-10-22 09:01:37,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:01:37,749 INFO L462 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2019-10-22 09:01:37,749 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-22 09:01:37,749 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2019-10-22 09:01:37,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-10-22 09:01:37,749 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:01:37,750 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:01:37,750 INFO L410 AbstractCegarLoop]: === Iteration 5 === [fooErr2REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr1REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION]=== [2019-10-22 09:01:37,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:01:37,750 INFO L82 PathProgramCache]: Analyzing trace with hash 143250926, now seen corresponding path program 1 times [2019-10-22 09:01:37,751 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:01:37,751 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319551] [2019-10-22 09:01:37,751 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:37,751 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:37,751 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:01:37,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:37,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:37,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:37,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:01:37,823 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319551] [2019-10-22 09:01:37,824 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:01:37,824 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-22 09:01:37,824 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351381161] [2019-10-22 09:01:37,824 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-22 09:01:37,824 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:01:37,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-22 09:01:37,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-22 09:01:37,825 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand 6 states. [2019-10-22 09:01:37,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:01:37,994 INFO L93 Difference]: Finished difference Result 60 states and 65 transitions. [2019-10-22 09:01:37,996 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 09:01:37,996 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2019-10-22 09:01:37,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:01:37,997 INFO L225 Difference]: With dead ends: 60 [2019-10-22 09:01:37,997 INFO L226 Difference]: Without dead ends: 60 [2019-10-22 09:01:37,998 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-10-22 09:01:37,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2019-10-22 09:01:38,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 43. [2019-10-22 09:01:38,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2019-10-22 09:01:38,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 48 transitions. [2019-10-22 09:01:38,003 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 48 transitions. Word has length 15 [2019-10-22 09:01:38,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:01:38,003 INFO L462 AbstractCegarLoop]: Abstraction has 43 states and 48 transitions. [2019-10-22 09:01:38,003 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-22 09:01:38,003 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 48 transitions. [2019-10-22 09:01:38,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-10-22 09:01:38,007 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:01:38,007 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:01:38,007 INFO L410 AbstractCegarLoop]: === Iteration 6 === [fooErr2REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr1REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION]=== [2019-10-22 09:01:38,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:01:38,008 INFO L82 PathProgramCache]: Analyzing trace with hash 1623425863, now seen corresponding path program 1 times [2019-10-22 09:01:38,008 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:01:38,008 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329489085] [2019-10-22 09:01:38,008 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:38,009 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:38,009 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:01:38,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:38,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:38,093 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:01:38,093 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329489085] [2019-10-22 09:01:38,093 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:01:38,093 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-22 09:01:38,094 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054935680] [2019-10-22 09:01:38,094 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-22 09:01:38,094 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:01:38,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-22 09:01:38,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-10-22 09:01:38,095 INFO L87 Difference]: Start difference. First operand 43 states and 48 transitions. Second operand 8 states. [2019-10-22 09:01:38,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:01:38,268 INFO L93 Difference]: Finished difference Result 70 states and 74 transitions. [2019-10-22 09:01:38,269 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-22 09:01:38,269 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 16 [2019-10-22 09:01:38,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:01:38,270 INFO L225 Difference]: With dead ends: 70 [2019-10-22 09:01:38,270 INFO L226 Difference]: Without dead ends: 67 [2019-10-22 09:01:38,270 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2019-10-22 09:01:38,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2019-10-22 09:01:38,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 50. [2019-10-22 09:01:38,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2019-10-22 09:01:38,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2019-10-22 09:01:38,276 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 16 [2019-10-22 09:01:38,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:01:38,276 INFO L462 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2019-10-22 09:01:38,276 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-22 09:01:38,276 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2019-10-22 09:01:38,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-10-22 09:01:38,277 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:01:38,277 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] [2019-10-22 09:01:38,277 INFO L410 AbstractCegarLoop]: === Iteration 7 === [fooErr2REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr1REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION]=== [2019-10-22 09:01:38,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:01:38,278 INFO L82 PathProgramCache]: Analyzing trace with hash 2121234189, now seen corresponding path program 1 times [2019-10-22 09:01:38,278 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:01:38,278 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854470913] [2019-10-22 09:01:38,278 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:38,278 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:38,279 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:01:38,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:38,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:38,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:38,333 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-22 09:01:38,333 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854470913] [2019-10-22 09:01:38,334 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:01:38,334 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 09:01:38,334 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817816140] [2019-10-22 09:01:38,334 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 09:01:38,335 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:01:38,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 09:01:38,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-22 09:01:38,335 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand 4 states. [2019-10-22 09:01:38,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:01:38,396 INFO L93 Difference]: Finished difference Result 48 states and 52 transitions. [2019-10-22 09:01:38,396 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-22 09:01:38,396 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2019-10-22 09:01:38,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:01:38,397 INFO L225 Difference]: With dead ends: 48 [2019-10-22 09:01:38,397 INFO L226 Difference]: Without dead ends: 48 [2019-10-22 09:01:38,398 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 [2019-10-22 09:01:38,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2019-10-22 09:01:38,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2019-10-22 09:01:38,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2019-10-22 09:01:38,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 52 transitions. [2019-10-22 09:01:38,402 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 52 transitions. Word has length 20 [2019-10-22 09:01:38,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:01:38,402 INFO L462 AbstractCegarLoop]: Abstraction has 48 states and 52 transitions. [2019-10-22 09:01:38,402 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 09:01:38,403 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 52 transitions. [2019-10-22 09:01:38,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-10-22 09:01:38,403 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:01:38,404 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] [2019-10-22 09:01:38,404 INFO L410 AbstractCegarLoop]: === Iteration 8 === [fooErr2REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr1REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION]=== [2019-10-22 09:01:38,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:01:38,404 INFO L82 PathProgramCache]: Analyzing trace with hash 2121234190, now seen corresponding path program 1 times [2019-10-22 09:01:38,405 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:01:38,405 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446396744] [2019-10-22 09:01:38,405 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:38,405 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:38,405 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:01:38,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:38,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:38,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:38,489 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-22 09:01:38,489 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446396744] [2019-10-22 09:01:38,490 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:01:38,490 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-22 09:01:38,490 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670655541] [2019-10-22 09:01:38,490 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 09:01:38,490 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:01:38,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 09:01:38,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-22 09:01:38,491 INFO L87 Difference]: Start difference. First operand 48 states and 52 transitions. Second operand 5 states. [2019-10-22 09:01:38,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:01:38,575 INFO L93 Difference]: Finished difference Result 52 states and 56 transitions. [2019-10-22 09:01:38,576 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-22 09:01:38,576 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2019-10-22 09:01:38,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:01:38,577 INFO L225 Difference]: With dead ends: 52 [2019-10-22 09:01:38,577 INFO L226 Difference]: Without dead ends: 52 [2019-10-22 09:01:38,578 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-22 09:01:38,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2019-10-22 09:01:38,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2019-10-22 09:01:38,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2019-10-22 09:01:38,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2019-10-22 09:01:38,581 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 20 [2019-10-22 09:01:38,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:01:38,582 INFO L462 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2019-10-22 09:01:38,582 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 09:01:38,582 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2019-10-22 09:01:38,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-10-22 09:01:38,583 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:01:38,583 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, 1, 1, 1, 1, 1] [2019-10-22 09:01:38,583 INFO L410 AbstractCegarLoop]: === Iteration 9 === [fooErr2REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr1REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION]=== [2019-10-22 09:01:38,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:01:38,586 INFO L82 PathProgramCache]: Analyzing trace with hash 2011781567, now seen corresponding path program 1 times [2019-10-22 09:01:38,586 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:01:38,586 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236947479] [2019-10-22 09:01:38,587 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:38,587 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:38,587 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:01:38,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:38,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:38,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:38,651 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-22 09:01:38,654 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236947479] [2019-10-22 09:01:38,654 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [991555185] [2019-10-22 09:01:38,654 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7d0edd2b-b599-4c8a-b3e3-a802fab00c81/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 [2019-10-22 09:01:38,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:38,709 INFO L256 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-22 09:01:38,713 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:01:38,735 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-22 09:01:38,736 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 09:01:38,736 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 6 [2019-10-22 09:01:38,736 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677001663] [2019-10-22 09:01:38,736 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-22 09:01:38,737 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:01:38,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-22 09:01:38,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-22 09:01:38,737 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand 6 states. [2019-10-22 09:01:38,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:01:38,820 INFO L93 Difference]: Finished difference Result 74 states and 79 transitions. [2019-10-22 09:01:38,820 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-22 09:01:38,820 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2019-10-22 09:01:38,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:01:38,821 INFO L225 Difference]: With dead ends: 74 [2019-10-22 09:01:38,821 INFO L226 Difference]: Without dead ends: 74 [2019-10-22 09:01:38,821 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-22 09:01:38,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2019-10-22 09:01:38,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 57. [2019-10-22 09:01:38,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2019-10-22 09:01:38,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 63 transitions. [2019-10-22 09:01:38,826 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 63 transitions. Word has length 26 [2019-10-22 09:01:38,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:01:38,826 INFO L462 AbstractCegarLoop]: Abstraction has 57 states and 63 transitions. [2019-10-22 09:01:38,827 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-22 09:01:38,827 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 63 transitions. [2019-10-22 09:01:38,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-10-22 09:01:38,827 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:01:38,827 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:01:39,028 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 09:01:39,028 INFO L410 AbstractCegarLoop]: === Iteration 10 === [fooErr2REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr1REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION]=== [2019-10-22 09:01:39,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:01:39,029 INFO L82 PathProgramCache]: Analyzing trace with hash 1143280978, now seen corresponding path program 1 times [2019-10-22 09:01:39,029 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:01:39,029 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338247229] [2019-10-22 09:01:39,029 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:39,029 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:39,029 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:01:39,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:39,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:39,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:39,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:39,104 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-22 09:01:39,104 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338247229] [2019-10-22 09:01:39,105 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [418772622] [2019-10-22 09:01:39,105 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7d0edd2b-b599-4c8a-b3e3-a802fab00c81/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 [2019-10-22 09:01:39,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:39,152 INFO L256 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-22 09:01:39,153 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:01:39,182 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-22 09:01:39,182 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-22 09:01:39,183 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 9 [2019-10-22 09:01:39,183 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414569898] [2019-10-22 09:01:39,183 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-22 09:01:39,183 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:01:39,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-22 09:01:39,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2019-10-22 09:01:39,184 INFO L87 Difference]: Start difference. First operand 57 states and 63 transitions. Second operand 6 states. [2019-10-22 09:01:39,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:01:39,297 INFO L93 Difference]: Finished difference Result 67 states and 70 transitions. [2019-10-22 09:01:39,298 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 09:01:39,298 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 31 [2019-10-22 09:01:39,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:01:39,298 INFO L225 Difference]: With dead ends: 67 [2019-10-22 09:01:39,299 INFO L226 Difference]: Without dead ends: 64 [2019-10-22 09:01:39,299 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2019-10-22 09:01:39,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2019-10-22 09:01:39,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 57. [2019-10-22 09:01:39,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2019-10-22 09:01:39,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 62 transitions. [2019-10-22 09:01:39,303 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 62 transitions. Word has length 31 [2019-10-22 09:01:39,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:01:39,303 INFO L462 AbstractCegarLoop]: Abstraction has 57 states and 62 transitions. [2019-10-22 09:01:39,303 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-22 09:01:39,303 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 62 transitions. [2019-10-22 09:01:39,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-10-22 09:01:39,304 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:01:39,304 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:01:39,505 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 09:01:39,505 INFO L410 AbstractCegarLoop]: === Iteration 11 === [fooErr2REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr1REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION]=== [2019-10-22 09:01:39,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:01:39,505 INFO L82 PathProgramCache]: Analyzing trace with hash -1735380924, now seen corresponding path program 1 times [2019-10-22 09:01:39,505 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:01:39,506 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633965154] [2019-10-22 09:01:39,506 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:39,506 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:39,506 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:01:39,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:39,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:39,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:39,593 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-22 09:01:39,594 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633965154] [2019-10-22 09:01:39,594 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1501629040] [2019-10-22 09:01:39,594 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7d0edd2b-b599-4c8a-b3e3-a802fab00c81/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 [2019-10-22 09:01:39,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:39,636 INFO L256 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-22 09:01:39,637 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:01:39,660 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-22 09:01:39,660 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 09:01:39,661 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 3] total 10 [2019-10-22 09:01:39,661 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988505626] [2019-10-22 09:01:39,661 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-22 09:01:39,661 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:01:39,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-22 09:01:39,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2019-10-22 09:01:39,662 INFO L87 Difference]: Start difference. First operand 57 states and 62 transitions. Second operand 11 states. [2019-10-22 09:01:39,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:01:39,888 INFO L93 Difference]: Finished difference Result 73 states and 79 transitions. [2019-10-22 09:01:39,888 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-22 09:01:39,888 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 32 [2019-10-22 09:01:39,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:01:39,889 INFO L225 Difference]: With dead ends: 73 [2019-10-22 09:01:39,889 INFO L226 Difference]: Without dead ends: 73 [2019-10-22 09:01:39,890 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2019-10-22 09:01:39,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2019-10-22 09:01:39,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 55. [2019-10-22 09:01:39,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2019-10-22 09:01:39,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 60 transitions. [2019-10-22 09:01:39,894 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 60 transitions. Word has length 32 [2019-10-22 09:01:39,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:01:39,894 INFO L462 AbstractCegarLoop]: Abstraction has 55 states and 60 transitions. [2019-10-22 09:01:39,894 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-22 09:01:39,894 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 60 transitions. [2019-10-22 09:01:39,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2019-10-22 09:01:39,895 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:01:39,895 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:01:40,095 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 09:01:40,096 INFO L410 AbstractCegarLoop]: === Iteration 12 === [fooErr2REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr1REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION]=== [2019-10-22 09:01:40,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:01:40,096 INFO L82 PathProgramCache]: Analyzing trace with hash 1978883467, now seen corresponding path program 2 times [2019-10-22 09:01:40,096 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:01:40,096 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636895584] [2019-10-22 09:01:40,097 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:40,097 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:40,097 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:01:40,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:40,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:40,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:40,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:40,170 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 13 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-22 09:01:40,171 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636895584] [2019-10-22 09:01:40,171 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [509959287] [2019-10-22 09:01:40,171 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7d0edd2b-b599-4c8a-b3e3-a802fab00c81/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 [2019-10-22 09:01:40,212 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-10-22 09:01:40,212 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-22 09:01:40,213 INFO L256 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-22 09:01:40,215 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:01:40,285 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-22 09:01:40,286 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 09:01:40,286 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 11 [2019-10-22 09:01:40,286 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235071293] [2019-10-22 09:01:40,286 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-22 09:01:40,287 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:01:40,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-22 09:01:40,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2019-10-22 09:01:40,287 INFO L87 Difference]: Start difference. First operand 55 states and 60 transitions. Second operand 11 states. [2019-10-22 09:01:40,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:01:40,551 INFO L93 Difference]: Finished difference Result 71 states and 74 transitions. [2019-10-22 09:01:40,552 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-22 09:01:40,552 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 36 [2019-10-22 09:01:40,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:01:40,552 INFO L225 Difference]: With dead ends: 71 [2019-10-22 09:01:40,553 INFO L226 Difference]: Without dead ends: 68 [2019-10-22 09:01:40,553 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2019-10-22 09:01:40,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2019-10-22 09:01:40,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 60. [2019-10-22 09:01:40,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2019-10-22 09:01:40,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 65 transitions. [2019-10-22 09:01:40,559 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 65 transitions. Word has length 36 [2019-10-22 09:01:40,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:01:40,560 INFO L462 AbstractCegarLoop]: Abstraction has 60 states and 65 transitions. [2019-10-22 09:01:40,560 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-22 09:01:40,560 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 65 transitions. [2019-10-22 09:01:40,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2019-10-22 09:01:40,560 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:01:40,561 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:01:40,761 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 09:01:40,761 INFO L410 AbstractCegarLoop]: === Iteration 13 === [fooErr2REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr1REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION]=== [2019-10-22 09:01:40,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:01:40,762 INFO L82 PathProgramCache]: Analyzing trace with hash 1930842354, now seen corresponding path program 3 times [2019-10-22 09:01:40,762 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:01:40,762 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630192064] [2019-10-22 09:01:40,762 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:40,762 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:40,762 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:01:40,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:40,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:40,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:40,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:40,845 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-10-22 09:01:40,846 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630192064] [2019-10-22 09:01:40,846 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1161569443] [2019-10-22 09:01:40,846 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7d0edd2b-b599-4c8a-b3e3-a802fab00c81/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 [2019-10-22 09:01:40,880 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-10-22 09:01:40,880 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-22 09:01:40,881 INFO L256 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 10 conjunts are in the unsatisfiable core [2019-10-22 09:01:40,884 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:01:40,906 INFO L392 ElimStorePlain]: Different costs {0=[|v_#length_12|], 1=[|v_#valid_24|]} [2019-10-22 09:01:40,913 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-22 09:01:40,921 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2019-10-22 09:01:40,921 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-22 09:01:40,930 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-22 09:01:40,933 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-22 09:01:40,936 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2019-10-22 09:01:40,937 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-10-22 09:01:40,943 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-22 09:01:40,944 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-10-22 09:01:40,944 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:24, output treesize:17 [2019-10-22 09:01:41,085 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-10-22 09:01:41,085 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 09:01:41,086 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 8 [2019-10-22 09:01:41,086 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849054849] [2019-10-22 09:01:41,086 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-22 09:01:41,086 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:01:41,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-22 09:01:41,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2019-10-22 09:01:41,087 INFO L87 Difference]: Start difference. First operand 60 states and 65 transitions. Second operand 9 states. [2019-10-22 09:01:41,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:01:41,310 INFO L93 Difference]: Finished difference Result 65 states and 71 transitions. [2019-10-22 09:01:41,311 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-22 09:01:41,311 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 41 [2019-10-22 09:01:41,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:01:41,312 INFO L225 Difference]: With dead ends: 65 [2019-10-22 09:01:41,312 INFO L226 Difference]: Without dead ends: 65 [2019-10-22 09:01:41,312 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 41 SyntacticMatches, 4 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2019-10-22 09:01:41,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2019-10-22 09:01:41,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 63. [2019-10-22 09:01:41,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2019-10-22 09:01:41,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 69 transitions. [2019-10-22 09:01:41,316 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 69 transitions. Word has length 41 [2019-10-22 09:01:41,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:01:41,316 INFO L462 AbstractCegarLoop]: Abstraction has 63 states and 69 transitions. [2019-10-22 09:01:41,316 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-22 09:01:41,316 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 69 transitions. [2019-10-22 09:01:41,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-10-22 09:01:41,317 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:01:41,317 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:01:41,518 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 09:01:41,518 INFO L410 AbstractCegarLoop]: === Iteration 14 === [fooErr2REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr1REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION]=== [2019-10-22 09:01:41,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:01:41,519 INFO L82 PathProgramCache]: Analyzing trace with hash 492189859, now seen corresponding path program 2 times [2019-10-22 09:01:41,519 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:01:41,519 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671760862] [2019-10-22 09:01:41,519 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:41,519 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:41,519 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:01:41,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:41,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:41,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:41,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:41,582 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-10-22 09:01:41,582 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671760862] [2019-10-22 09:01:41,582 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [555154384] [2019-10-22 09:01:41,582 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7d0edd2b-b599-4c8a-b3e3-a802fab00c81/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 [2019-10-22 09:01:41,623 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2019-10-22 09:01:41,623 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-22 09:01:41,624 INFO L256 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-22 09:01:41,626 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:01:41,634 INFO L392 ElimStorePlain]: Different costs {0=[|v_#length_13|], 1=[|v_#valid_25|]} [2019-10-22 09:01:41,638 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-22 09:01:41,640 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2019-10-22 09:01:41,641 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-22 09:01:41,648 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-22 09:01:41,652 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-22 09:01:41,655 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2019-10-22 09:01:41,655 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-10-22 09:01:41,665 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-22 09:01:41,666 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-10-22 09:01:41,666 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:21, output treesize:14 [2019-10-22 09:01:41,797 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-22 09:01:41,798 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-22 09:01:41,798 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 10 [2019-10-22 09:01:41,798 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239407576] [2019-10-22 09:01:41,798 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-22 09:01:41,798 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:01:41,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-22 09:01:41,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2019-10-22 09:01:41,799 INFO L87 Difference]: Start difference. First operand 63 states and 69 transitions. Second operand 6 states. [2019-10-22 09:01:41,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:01:41,833 INFO L93 Difference]: Finished difference Result 61 states and 66 transitions. [2019-10-22 09:01:41,833 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-22 09:01:41,833 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 47 [2019-10-22 09:01:41,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:01:41,834 INFO L225 Difference]: With dead ends: 61 [2019-10-22 09:01:41,834 INFO L226 Difference]: Without dead ends: 61 [2019-10-22 09:01:41,834 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 46 SyntacticMatches, 3 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2019-10-22 09:01:41,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2019-10-22 09:01:41,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 58. [2019-10-22 09:01:41,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2019-10-22 09:01:41,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 62 transitions. [2019-10-22 09:01:41,838 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 62 transitions. Word has length 47 [2019-10-22 09:01:41,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:01:41,838 INFO L462 AbstractCegarLoop]: Abstraction has 58 states and 62 transitions. [2019-10-22 09:01:41,838 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-22 09:01:41,838 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 62 transitions. [2019-10-22 09:01:41,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2019-10-22 09:01:41,839 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:01:41,839 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:01:42,040 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 09:01:42,040 INFO L410 AbstractCegarLoop]: === Iteration 15 === [fooErr2REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr1REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION]=== [2019-10-22 09:01:42,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:01:42,041 INFO L82 PathProgramCache]: Analyzing trace with hash -190258011, now seen corresponding path program 1 times [2019-10-22 09:01:42,041 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:01:42,041 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842750050] [2019-10-22 09:01:42,041 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:42,041 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:42,041 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:01:42,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:42,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:42,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:42,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:42,107 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-10-22 09:01:42,109 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842750050] [2019-10-22 09:01:42,110 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [131494530] [2019-10-22 09:01:42,110 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7d0edd2b-b599-4c8a-b3e3-a802fab00c81/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 [2019-10-22 09:01:42,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:42,149 INFO L256 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 09:01:42,150 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:01:42,165 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-10-22 09:01:42,165 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 09:01:42,165 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 7 [2019-10-22 09:01:42,166 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656500822] [2019-10-22 09:01:42,166 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-22 09:01:42,166 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:01:42,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-22 09:01:42,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-10-22 09:01:42,167 INFO L87 Difference]: Start difference. First operand 58 states and 62 transitions. Second operand 7 states. [2019-10-22 09:01:42,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:01:42,257 INFO L93 Difference]: Finished difference Result 85 states and 90 transitions. [2019-10-22 09:01:42,257 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 09:01:42,258 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 50 [2019-10-22 09:01:42,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:01:42,258 INFO L225 Difference]: With dead ends: 85 [2019-10-22 09:01:42,259 INFO L226 Difference]: Without dead ends: 85 [2019-10-22 09:01:42,259 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-10-22 09:01:42,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2019-10-22 09:01:42,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 68. [2019-10-22 09:01:42,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2019-10-22 09:01:42,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 74 transitions. [2019-10-22 09:01:42,262 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 74 transitions. Word has length 50 [2019-10-22 09:01:42,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:01:42,263 INFO L462 AbstractCegarLoop]: Abstraction has 68 states and 74 transitions. [2019-10-22 09:01:42,263 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-22 09:01:42,263 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 74 transitions. [2019-10-22 09:01:42,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2019-10-22 09:01:42,265 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:01:42,265 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:01:42,465 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 09:01:42,465 INFO L410 AbstractCegarLoop]: === Iteration 16 === [fooErr2REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr1REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION]=== [2019-10-22 09:01:42,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:01:42,466 INFO L82 PathProgramCache]: Analyzing trace with hash -1277143159, now seen corresponding path program 2 times [2019-10-22 09:01:42,466 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:01:42,466 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575540527] [2019-10-22 09:01:42,466 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:42,466 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:42,466 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:01:42,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:42,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:42,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:42,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:42,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:42,543 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2019-10-22 09:01:42,543 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575540527] [2019-10-22 09:01:42,543 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2124214965] [2019-10-22 09:01:42,543 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7d0edd2b-b599-4c8a-b3e3-a802fab00c81/bin/uautomizer/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 09:01:42,578 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2019-10-22 09:01:42,578 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-22 09:01:42,578 INFO L256 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-22 09:01:42,581 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:01:42,629 INFO L341 Elim1Store]: treesize reduction 14, result has 50.0 percent of original size [2019-10-22 09:01:42,629 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 29 [2019-10-22 09:01:42,630 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-22 09:01:42,634 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-22 09:01:42,635 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-10-22 09:01:42,635 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:23, output treesize:15 [2019-10-22 09:01:42,690 INFO L341 Elim1Store]: treesize reduction 14, result has 50.0 percent of original size [2019-10-22 09:01:42,690 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 29 [2019-10-22 09:01:42,691 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-22 09:01:42,696 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-22 09:01:42,696 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-10-22 09:01:42,697 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:23, output treesize:15 [2019-10-22 09:01:42,748 INFO L341 Elim1Store]: treesize reduction 14, result has 50.0 percent of original size [2019-10-22 09:01:42,748 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 29 [2019-10-22 09:01:42,749 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-22 09:01:42,752 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-22 09:01:42,753 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-10-22 09:01:42,753 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:23, output treesize:15 [2019-10-22 09:01:42,825 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2019-10-22 09:01:42,825 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-22 09:01:42,826 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 11 [2019-10-22 09:01:42,826 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715493425] [2019-10-22 09:01:42,826 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-22 09:01:42,826 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:01:42,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-22 09:01:42,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2019-10-22 09:01:42,827 INFO L87 Difference]: Start difference. First operand 68 states and 74 transitions. Second operand 6 states. [2019-10-22 09:01:42,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:01:42,898 INFO L93 Difference]: Finished difference Result 67 states and 73 transitions. [2019-10-22 09:01:42,898 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 09:01:42,898 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 71 [2019-10-22 09:01:42,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:01:42,899 INFO L225 Difference]: With dead ends: 67 [2019-10-22 09:01:42,899 INFO L226 Difference]: Without dead ends: 0 [2019-10-22 09:01:42,899 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 70 SyntacticMatches, 5 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2019-10-22 09:01:42,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-22 09:01:42,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-22 09:01:42,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-22 09:01:42,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-22 09:01:42,900 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 71 [2019-10-22 09:01:42,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:01:42,900 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 09:01:42,900 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-22 09:01:42,900 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-22 09:01:42,900 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-22 09:01:43,101 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 09:01:43,105 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 09:01:43 BoogieIcfgContainer [2019-10-22 09:01:43,105 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 09:01:43,105 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 09:01:43,105 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 09:01:43,105 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 09:01:43,106 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:01:36" (3/4) ... [2019-10-22 09:01:43,113 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-10-22 09:01:43,119 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2019-10-22 09:01:43,119 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure foo [2019-10-22 09:01:43,119 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2019-10-22 09:01:43,123 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2019-10-22 09:01:43,123 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2019-10-22 09:01:43,124 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-10-22 09:01:43,124 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-10-22 09:01:43,154 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_7d0edd2b-b599-4c8a-b3e3-a802fab00c81/bin/uautomizer/witness.graphml [2019-10-22 09:01:43,155 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 09:01:43,156 INFO L168 Benchmark]: Toolchain (without parser) took 7067.15 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 176.7 MB). Free memory was 944.5 MB in the beginning and 904.7 MB in the end (delta: 39.9 MB). Peak memory consumption was 216.6 MB. Max. memory is 11.5 GB. [2019-10-22 09:01:43,156 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 962.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 09:01:43,156 INFO L168 Benchmark]: CACSL2BoogieTranslator took 239.24 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 127.4 MB). Free memory was 944.5 MB in the beginning and 1.1 GB in the end (delta: -180.2 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. [2019-10-22 09:01:43,157 INFO L168 Benchmark]: Boogie Preprocessor took 34.50 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 09:01:43,157 INFO L168 Benchmark]: RCFGBuilder took 246.41 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: 26.4 MB). Peak memory consumption was 26.4 MB. Max. memory is 11.5 GB. [2019-10-22 09:01:43,157 INFO L168 Benchmark]: TraceAbstraction took 6493.24 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 49.3 MB). Free memory was 1.1 GB in the beginning and 912.8 MB in the end (delta: 185.6 MB). Peak memory consumption was 234.9 MB. Max. memory is 11.5 GB. [2019-10-22 09:01:43,157 INFO L168 Benchmark]: Witness Printer took 49.51 ms. Allocated memory is still 1.2 GB. Free memory was 912.8 MB in the beginning and 904.7 MB in the end (delta: 8.1 MB). Peak memory consumption was 8.1 MB. Max. memory is 11.5 GB. [2019-10-22 09:01:43,159 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 962.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 239.24 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 127.4 MB). Free memory was 944.5 MB in the beginning and 1.1 GB in the end (delta: -180.2 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 34.50 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 246.41 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: 26.4 MB). Peak memory consumption was 26.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 6493.24 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 49.3 MB). Free memory was 1.1 GB in the beginning and 912.8 MB in the end (delta: 185.6 MB). Peak memory consumption was 234.9 MB. Max. memory is 11.5 GB. * Witness Printer took 49.51 ms. Allocated memory is still 1.2 GB. Free memory was 912.8 MB in the beginning and 904.7 MB in the end (delta: 8.1 MB). Peak memory consumption was 8.1 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 18]: array index is always in bounds For all program executions holds that array index is always in bounds at this location - PositiveResult [Line: 18]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 30]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 23]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 30]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 27]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 27]: 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: 6.4s, OverallIterations: 16, TraceHistogramMax: 5, AutomataDifference: 2.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 381 SDtfs, 708 SDslu, 600 SDs, 0 SdLazy, 1567 SolverSat, 135 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 495 GetRequests, 370 SyntacticMatches, 12 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=68occurred in iteration=15, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 16 MinimizatonAttempts, 134 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 784 NumberOfCodeBlocks, 679 NumberOfCodeBlocksAsserted, 26 NumberOfCheckSat, 760 ConstructedInterpolants, 117 QuantifiedInterpolants, 184018 SizeOfPredicates, 10 NumberOfNonLiveVariables, 832 ConjunctsInSsa, 51 ConjunctsInUnsatCore, 24 InterpolantComputations, 11 PerfectInterpolantSequences, 430/494 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...