./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-numeric/MultCommutative-1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 678e0110 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_a6eb5f5f-2d06-48b0-90da-064bf303fe62/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_a6eb5f5f-2d06-48b0-90da-064bf303fe62/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_a6eb5f5f-2d06-48b0-90da-064bf303fe62/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_a6eb5f5f-2d06-48b0-90da-064bf303fe62/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-numeric/MultCommutative-1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_a6eb5f5f-2d06-48b0-90da-064bf303fe62/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_a6eb5f5f-2d06-48b0-90da-064bf303fe62/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash a7af5709195f6c1eec73f2559f8e654af4840835 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(OVERFLOW) --- Real Ultimate output --- This is Ultimate 0.1.24-678e011 [2019-11-19 23:16:53,960 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-19 23:16:53,962 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-19 23:16:53,976 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-19 23:16:53,977 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-19 23:16:53,978 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-19 23:16:53,980 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-19 23:16:53,988 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-19 23:16:53,989 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-19 23:16:53,990 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-19 23:16:53,991 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-19 23:16:53,992 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-19 23:16:53,992 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-19 23:16:53,995 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-19 23:16:53,996 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-19 23:16:53,998 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-19 23:16:53,999 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-19 23:16:54,001 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-19 23:16:54,003 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-19 23:16:54,008 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-19 23:16:54,012 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-19 23:16:54,014 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-19 23:16:54,017 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-19 23:16:54,017 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-19 23:16:54,020 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-19 23:16:54,021 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-19 23:16:54,021 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-19 23:16:54,022 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-19 23:16:54,023 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-19 23:16:54,024 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-19 23:16:54,024 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-19 23:16:54,025 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-19 23:16:54,025 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-19 23:16:54,026 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-19 23:16:54,027 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-19 23:16:54,027 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-19 23:16:54,028 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-19 23:16:54,028 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-19 23:16:54,029 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-19 23:16:54,030 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-19 23:16:54,031 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-19 23:16:54,031 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_a6eb5f5f-2d06-48b0-90da-064bf303fe62/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf [2019-11-19 23:16:54,055 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-19 23:16:54,055 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-19 23:16:54,057 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-19 23:16:54,057 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-19 23:16:54,057 INFO L138 SettingsManager]: * Use SBE=true [2019-11-19 23:16:54,057 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-19 23:16:54,058 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-19 23:16:54,058 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-19 23:16:54,058 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-19 23:16:54,058 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-19 23:16:54,059 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-19 23:16:54,059 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-19 23:16:54,060 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2019-11-19 23:16:54,060 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-19 23:16:54,060 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-19 23:16:54,060 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-19 23:16:54,060 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-19 23:16:54,061 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-19 23:16:54,061 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-19 23:16:54,061 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-19 23:16:54,061 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-19 23:16:54,062 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-19 23:16:54,062 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-19 23:16:54,062 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-19 23:16:54,062 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-19 23:16:54,062 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-19 23:16:54,063 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-19 23:16:54,063 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_a6eb5f5f-2d06-48b0-90da-064bf303fe62/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 ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a7af5709195f6c1eec73f2559f8e654af4840835 [2019-11-19 23:16:54,208 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-19 23:16:54,220 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-19 23:16:54,224 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-19 23:16:54,227 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-19 23:16:54,228 INFO L275 PluginConnector]: CDTParser initialized [2019-11-19 23:16:54,229 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_a6eb5f5f-2d06-48b0-90da-064bf303fe62/bin/uautomizer/../../sv-benchmarks/c/termination-numeric/MultCommutative-1.c [2019-11-19 23:16:54,284 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a6eb5f5f-2d06-48b0-90da-064bf303fe62/bin/uautomizer/data/ba982b9aa/6b0cf0db457e447289359b0a52c35fd4/FLAGbc9b02832 [2019-11-19 23:16:54,678 INFO L306 CDTParser]: Found 1 translation units. [2019-11-19 23:16:54,679 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_a6eb5f5f-2d06-48b0-90da-064bf303fe62/sv-benchmarks/c/termination-numeric/MultCommutative-1.c [2019-11-19 23:16:54,685 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a6eb5f5f-2d06-48b0-90da-064bf303fe62/bin/uautomizer/data/ba982b9aa/6b0cf0db457e447289359b0a52c35fd4/FLAGbc9b02832 [2019-11-19 23:16:54,699 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_a6eb5f5f-2d06-48b0-90da-064bf303fe62/bin/uautomizer/data/ba982b9aa/6b0cf0db457e447289359b0a52c35fd4 [2019-11-19 23:16:54,703 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-19 23:16:54,705 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-19 23:16:54,709 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-19 23:16:54,709 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-19 23:16:54,713 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-19 23:16:54,713 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 11:16:54" (1/1) ... [2019-11-19 23:16:54,716 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@296df8ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:16:54, skipping insertion in model container [2019-11-19 23:16:54,716 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 11:16:54" (1/1) ... [2019-11-19 23:16:54,723 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-19 23:16:54,740 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-19 23:16:54,939 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-19 23:16:54,943 INFO L188 MainTranslator]: Completed pre-run [2019-11-19 23:16:55,015 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-19 23:16:55,026 INFO L192 MainTranslator]: Completed translation [2019-11-19 23:16:55,026 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:16:55 WrapperNode [2019-11-19 23:16:55,027 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-19 23:16:55,027 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-19 23:16:55,027 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-19 23:16:55,027 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-19 23:16:55,033 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:16:55" (1/1) ... [2019-11-19 23:16:55,037 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:16:55" (1/1) ... [2019-11-19 23:16:55,053 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-19 23:16:55,053 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-19 23:16:55,053 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-19 23:16:55,053 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-19 23:16:55,062 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:16:55" (1/1) ... [2019-11-19 23:16:55,062 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:16:55" (1/1) ... [2019-11-19 23:16:55,063 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:16:55" (1/1) ... [2019-11-19 23:16:55,063 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:16:55" (1/1) ... [2019-11-19 23:16:55,065 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:16:55" (1/1) ... [2019-11-19 23:16:55,067 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:16:55" (1/1) ... [2019-11-19 23:16:55,068 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:16:55" (1/1) ... [2019-11-19 23:16:55,069 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-19 23:16:55,070 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-19 23:16:55,070 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-19 23:16:55,070 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-19 23:16:55,071 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:16:55" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a6eb5f5f-2d06-48b0-90da-064bf303fe62/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-19 23:16:55,121 INFO L130 BoogieDeclarations]: Found specification of procedure mult [2019-11-19 23:16:55,122 INFO L138 BoogieDeclarations]: Found implementation of procedure mult [2019-11-19 23:16:55,122 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-19 23:16:55,122 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-19 23:16:55,303 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-19 23:16:55,304 INFO L285 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-19 23:16:55,305 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 11:16:55 BoogieIcfgContainer [2019-11-19 23:16:55,305 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-19 23:16:55,305 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-19 23:16:55,306 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-19 23:16:55,308 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-19 23:16:55,308 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 11:16:54" (1/3) ... [2019-11-19 23:16:55,309 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c1192a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 11:16:55, skipping insertion in model container [2019-11-19 23:16:55,309 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:16:55" (2/3) ... [2019-11-19 23:16:55,309 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c1192a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 11:16:55, skipping insertion in model container [2019-11-19 23:16:55,310 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 11:16:55" (3/3) ... [2019-11-19 23:16:55,311 INFO L109 eAbstractionObserver]: Analyzing ICFG MultCommutative-1.c [2019-11-19 23:16:55,320 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-19 23:16:55,326 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2019-11-19 23:16:55,335 INFO L249 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2019-11-19 23:16:55,356 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-19 23:16:55,356 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-19 23:16:55,357 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-19 23:16:55,357 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-19 23:16:55,357 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-19 23:16:55,357 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-19 23:16:55,357 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-19 23:16:55,357 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-19 23:16:55,378 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2019-11-19 23:16:55,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-19 23:16:55,382 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 23:16:55,383 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-19 23:16:55,383 INFO L410 AbstractCegarLoop]: === Iteration 1 === [multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-19 23:16:55,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:16:55,389 INFO L82 PathProgramCache]: Analyzing trace with hash 887577448, now seen corresponding path program 1 times [2019-11-19 23:16:55,398 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 23:16:55,398 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981306477] [2019-11-19 23:16:55,398 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 23:16:55,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 23:16:55,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 23:16:55,550 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981306477] [2019-11-19 23:16:55,551 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-19 23:16:55,551 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-19 23:16:55,553 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668835970] [2019-11-19 23:16:55,556 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-19 23:16:55,556 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 23:16:55,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-19 23:16:55,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-19 23:16:55,567 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 5 states. [2019-11-19 23:16:55,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 23:16:55,714 INFO L93 Difference]: Finished difference Result 80 states and 98 transitions. [2019-11-19 23:16:55,715 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-19 23:16:55,716 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2019-11-19 23:16:55,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 23:16:55,723 INFO L225 Difference]: With dead ends: 80 [2019-11-19 23:16:55,724 INFO L226 Difference]: Without dead ends: 42 [2019-11-19 23:16:55,728 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-19 23:16:55,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2019-11-19 23:16:55,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 37. [2019-11-19 23:16:55,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-11-19 23:16:55,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 45 transitions. [2019-11-19 23:16:55,766 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 45 transitions. Word has length 7 [2019-11-19 23:16:55,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 23:16:55,766 INFO L462 AbstractCegarLoop]: Abstraction has 37 states and 45 transitions. [2019-11-19 23:16:55,766 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-19 23:16:55,766 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 45 transitions. [2019-11-19 23:16:55,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-19 23:16:55,767 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 23:16:55,767 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 23:16:55,768 INFO L410 AbstractCegarLoop]: === Iteration 2 === [multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-19 23:16:55,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:16:55,768 INFO L82 PathProgramCache]: Analyzing trace with hash 1745104164, now seen corresponding path program 1 times [2019-11-19 23:16:55,768 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 23:16:55,769 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443343882] [2019-11-19 23:16:55,769 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 23:16:55,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 23:16:55,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 23:16:55,823 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443343882] [2019-11-19 23:16:55,823 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-19 23:16:55,823 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-19 23:16:55,824 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535685102] [2019-11-19 23:16:55,825 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-19 23:16:55,825 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 23:16:55,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-19 23:16:55,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-19 23:16:55,826 INFO L87 Difference]: Start difference. First operand 37 states and 45 transitions. Second operand 5 states. [2019-11-19 23:16:55,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 23:16:55,961 INFO L93 Difference]: Finished difference Result 58 states and 72 transitions. [2019-11-19 23:16:55,961 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-19 23:16:55,962 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2019-11-19 23:16:55,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 23:16:55,963 INFO L225 Difference]: With dead ends: 58 [2019-11-19 23:16:55,963 INFO L226 Difference]: Without dead ends: 56 [2019-11-19 23:16:55,965 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-19 23:16:55,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2019-11-19 23:16:55,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 51. [2019-11-19 23:16:55,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2019-11-19 23:16:55,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 64 transitions. [2019-11-19 23:16:55,980 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 64 transitions. Word has length 8 [2019-11-19 23:16:55,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 23:16:55,980 INFO L462 AbstractCegarLoop]: Abstraction has 51 states and 64 transitions. [2019-11-19 23:16:55,980 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-19 23:16:55,980 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 64 transitions. [2019-11-19 23:16:55,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-19 23:16:55,981 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 23:16:55,982 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 23:16:55,982 INFO L410 AbstractCegarLoop]: === Iteration 3 === [multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-19 23:16:55,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:16:55,982 INFO L82 PathProgramCache]: Analyzing trace with hash 80311672, now seen corresponding path program 1 times [2019-11-19 23:16:55,983 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 23:16:55,983 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436984044] [2019-11-19 23:16:55,983 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 23:16:56,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 23:16:56,044 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 23:16:56,044 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436984044] [2019-11-19 23:16:56,044 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-19 23:16:56,044 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-19 23:16:56,045 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586561515] [2019-11-19 23:16:56,045 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-19 23:16:56,045 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 23:16:56,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-19 23:16:56,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-19 23:16:56,046 INFO L87 Difference]: Start difference. First operand 51 states and 64 transitions. Second operand 5 states. [2019-11-19 23:16:56,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 23:16:56,133 INFO L93 Difference]: Finished difference Result 106 states and 134 transitions. [2019-11-19 23:16:56,134 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-19 23:16:56,134 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2019-11-19 23:16:56,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 23:16:56,136 INFO L225 Difference]: With dead ends: 106 [2019-11-19 23:16:56,136 INFO L226 Difference]: Without dead ends: 64 [2019-11-19 23:16:56,138 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-11-19 23:16:56,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2019-11-19 23:16:56,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 55. [2019-11-19 23:16:56,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2019-11-19 23:16:56,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 67 transitions. [2019-11-19 23:16:56,148 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 67 transitions. Word has length 13 [2019-11-19 23:16:56,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 23:16:56,149 INFO L462 AbstractCegarLoop]: Abstraction has 55 states and 67 transitions. [2019-11-19 23:16:56,149 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-19 23:16:56,149 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 67 transitions. [2019-11-19 23:16:56,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-19 23:16:56,150 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 23:16:56,150 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 23:16:56,150 INFO L410 AbstractCegarLoop]: === Iteration 4 === [multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-19 23:16:56,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:16:56,151 INFO L82 PathProgramCache]: Analyzing trace with hash 1248859076, now seen corresponding path program 1 times [2019-11-19 23:16:56,151 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 23:16:56,151 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236017752] [2019-11-19 23:16:56,151 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 23:16:56,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 23:16:56,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 23:16:56,212 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 23:16:56,213 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236017752] [2019-11-19 23:16:56,213 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-19 23:16:56,213 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-19 23:16:56,213 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918411860] [2019-11-19 23:16:56,214 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-19 23:16:56,214 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 23:16:56,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-19 23:16:56,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-19 23:16:56,214 INFO L87 Difference]: Start difference. First operand 55 states and 67 transitions. Second operand 5 states. [2019-11-19 23:16:56,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 23:16:56,274 INFO L93 Difference]: Finished difference Result 81 states and 95 transitions. [2019-11-19 23:16:56,275 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-19 23:16:56,275 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2019-11-19 23:16:56,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 23:16:56,276 INFO L225 Difference]: With dead ends: 81 [2019-11-19 23:16:56,277 INFO L226 Difference]: Without dead ends: 54 [2019-11-19 23:16:56,277 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-19 23:16:56,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2019-11-19 23:16:56,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 51. [2019-11-19 23:16:56,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2019-11-19 23:16:56,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 62 transitions. [2019-11-19 23:16:56,286 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 62 transitions. Word has length 14 [2019-11-19 23:16:56,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 23:16:56,286 INFO L462 AbstractCegarLoop]: Abstraction has 51 states and 62 transitions. [2019-11-19 23:16:56,286 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-19 23:16:56,287 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 62 transitions. [2019-11-19 23:16:56,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-19 23:16:56,287 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 23:16:56,288 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 23:16:56,288 INFO L410 AbstractCegarLoop]: === Iteration 5 === [multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-19 23:16:56,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:16:56,289 INFO L82 PathProgramCache]: Analyzing trace with hash 59932744, now seen corresponding path program 1 times [2019-11-19 23:16:56,289 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 23:16:56,289 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453803774] [2019-11-19 23:16:56,289 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 23:16:56,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 23:16:56,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 23:16:56,338 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 23:16:56,338 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453803774] [2019-11-19 23:16:56,339 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-19 23:16:56,339 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-19 23:16:56,339 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532891557] [2019-11-19 23:16:56,339 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-19 23:16:56,339 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 23:16:56,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-19 23:16:56,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-19 23:16:56,340 INFO L87 Difference]: Start difference. First operand 51 states and 62 transitions. Second operand 5 states. [2019-11-19 23:16:56,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 23:16:56,387 INFO L93 Difference]: Finished difference Result 57 states and 67 transitions. [2019-11-19 23:16:56,388 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-19 23:16:56,388 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2019-11-19 23:16:56,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 23:16:56,389 INFO L225 Difference]: With dead ends: 57 [2019-11-19 23:16:56,389 INFO L226 Difference]: Without dead ends: 56 [2019-11-19 23:16:56,390 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-19 23:16:56,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2019-11-19 23:16:56,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 50. [2019-11-19 23:16:56,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2019-11-19 23:16:56,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 60 transitions. [2019-11-19 23:16:56,398 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 60 transitions. Word has length 15 [2019-11-19 23:16:56,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 23:16:56,399 INFO L462 AbstractCegarLoop]: Abstraction has 50 states and 60 transitions. [2019-11-19 23:16:56,399 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-19 23:16:56,399 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2019-11-19 23:16:56,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-19 23:16:56,400 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 23:16:56,400 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 23:16:56,400 INFO L410 AbstractCegarLoop]: === Iteration 6 === [multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-19 23:16:56,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:16:56,401 INFO L82 PathProgramCache]: Analyzing trace with hash -65083495, now seen corresponding path program 1 times [2019-11-19 23:16:56,401 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 23:16:56,401 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019866921] [2019-11-19 23:16:56,402 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 23:16:56,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 23:16:56,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 23:16:56,473 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 23:16:56,473 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019866921] [2019-11-19 23:16:56,473 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1750194152] [2019-11-19 23:16:56,473 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a6eb5f5f-2d06-48b0-90da-064bf303fe62/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 23:16:56,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 23:16:56,509 INFO L255 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-19 23:16:56,514 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 23:16:56,561 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 23:16:56,562 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-19 23:16:56,562 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2019-11-19 23:16:56,562 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902860143] [2019-11-19 23:16:56,563 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-19 23:16:56,563 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 23:16:56,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-19 23:16:56,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-11-19 23:16:56,563 INFO L87 Difference]: Start difference. First operand 50 states and 60 transitions. Second operand 8 states. [2019-11-19 23:16:56,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 23:16:56,694 INFO L93 Difference]: Finished difference Result 66 states and 78 transitions. [2019-11-19 23:16:56,695 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-19 23:16:56,695 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 17 [2019-11-19 23:16:56,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 23:16:56,696 INFO L225 Difference]: With dead ends: 66 [2019-11-19 23:16:56,696 INFO L226 Difference]: Without dead ends: 65 [2019-11-19 23:16:56,697 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2019-11-19 23:16:56,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2019-11-19 23:16:56,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 56. [2019-11-19 23:16:56,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2019-11-19 23:16:56,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 67 transitions. [2019-11-19 23:16:56,706 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 67 transitions. Word has length 17 [2019-11-19 23:16:56,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 23:16:56,706 INFO L462 AbstractCegarLoop]: Abstraction has 56 states and 67 transitions. [2019-11-19 23:16:56,707 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-19 23:16:56,707 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 67 transitions. [2019-11-19 23:16:56,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-19 23:16:56,708 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 23:16:56,708 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 23:16:56,912 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 23:16:56,914 INFO L410 AbstractCegarLoop]: === Iteration 7 === [multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-19 23:16:56,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:16:56,914 INFO L82 PathProgramCache]: Analyzing trace with hash -2017588291, now seen corresponding path program 1 times [2019-11-19 23:16:56,925 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 23:16:56,926 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427570537] [2019-11-19 23:16:56,926 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 23:16:56,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 23:16:56,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 23:16:57,022 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 23:16:57,023 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427570537] [2019-11-19 23:16:57,023 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [129151246] [2019-11-19 23:16:57,023 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a6eb5f5f-2d06-48b0-90da-064bf303fe62/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 23:16:57,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 23:16:57,061 INFO L255 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-19 23:16:57,063 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 23:16:57,084 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 23:16:57,085 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-19 23:16:57,085 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 7 [2019-11-19 23:16:57,085 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783679223] [2019-11-19 23:16:57,086 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-19 23:16:57,086 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 23:16:57,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-19 23:16:57,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-11-19 23:16:57,087 INFO L87 Difference]: Start difference. First operand 56 states and 67 transitions. Second operand 8 states. [2019-11-19 23:16:57,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 23:16:57,187 INFO L93 Difference]: Finished difference Result 60 states and 70 transitions. [2019-11-19 23:16:57,188 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-19 23:16:57,188 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2019-11-19 23:16:57,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 23:16:57,189 INFO L225 Difference]: With dead ends: 60 [2019-11-19 23:16:57,189 INFO L226 Difference]: Without dead ends: 59 [2019-11-19 23:16:57,190 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2019-11-19 23:16:57,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2019-11-19 23:16:57,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 56. [2019-11-19 23:16:57,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2019-11-19 23:16:57,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 65 transitions. [2019-11-19 23:16:57,198 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 65 transitions. Word has length 18 [2019-11-19 23:16:57,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 23:16:57,199 INFO L462 AbstractCegarLoop]: Abstraction has 56 states and 65 transitions. [2019-11-19 23:16:57,199 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-19 23:16:57,199 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 65 transitions. [2019-11-19 23:16:57,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-11-19 23:16:57,201 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 23:16:57,201 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 23:16:57,405 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 23:16:57,405 INFO L410 AbstractCegarLoop]: === Iteration 8 === [multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-19 23:16:57,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:16:57,405 INFO L82 PathProgramCache]: Analyzing trace with hash -1437475595, now seen corresponding path program 1 times [2019-11-19 23:16:57,406 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 23:16:57,406 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342124511] [2019-11-19 23:16:57,406 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 23:16:57,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 23:16:57,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 23:16:57,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 23:16:57,556 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-19 23:16:57,556 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342124511] [2019-11-19 23:16:57,556 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [752344418] [2019-11-19 23:16:57,557 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a6eb5f5f-2d06-48b0-90da-064bf303fe62/bin/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 23:16:57,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 23:16:57,607 INFO L255 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-19 23:16:57,610 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 23:16:57,655 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-19 23:16:57,656 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-19 23:16:57,656 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 10 [2019-11-19 23:16:57,656 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36943903] [2019-11-19 23:16:57,656 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-19 23:16:57,657 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 23:16:57,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-19 23:16:57,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2019-11-19 23:16:57,657 INFO L87 Difference]: Start difference. First operand 56 states and 65 transitions. Second operand 11 states. [2019-11-19 23:16:57,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 23:16:57,925 INFO L93 Difference]: Finished difference Result 86 states and 100 transitions. [2019-11-19 23:16:57,925 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-11-19 23:16:57,925 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 24 [2019-11-19 23:16:57,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 23:16:57,927 INFO L225 Difference]: With dead ends: 86 [2019-11-19 23:16:57,927 INFO L226 Difference]: Without dead ends: 85 [2019-11-19 23:16:57,928 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2019-11-19 23:16:57,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2019-11-19 23:16:57,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 79. [2019-11-19 23:16:57,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2019-11-19 23:16:57,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 91 transitions. [2019-11-19 23:16:57,939 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 91 transitions. Word has length 24 [2019-11-19 23:16:57,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 23:16:57,944 INFO L462 AbstractCegarLoop]: Abstraction has 79 states and 91 transitions. [2019-11-19 23:16:57,944 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-11-19 23:16:57,945 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 91 transitions. [2019-11-19 23:16:57,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-11-19 23:16:57,946 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 23:16:57,947 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 23:16:58,147 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 23:16:58,149 INFO L410 AbstractCegarLoop]: === Iteration 9 === [multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-19 23:16:58,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:16:58,149 INFO L82 PathProgramCache]: Analyzing trace with hash -1612070431, now seen corresponding path program 1 times [2019-11-19 23:16:58,150 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 23:16:58,150 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293526607] [2019-11-19 23:16:58,150 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 23:16:58,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 23:16:58,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 23:16:58,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 23:16:58,244 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-19 23:16:58,245 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293526607] [2019-11-19 23:16:58,245 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1575102495] [2019-11-19 23:16:58,245 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a6eb5f5f-2d06-48b0-90da-064bf303fe62/bin/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 23:16:58,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 23:16:58,289 INFO L255 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-19 23:16:58,291 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 23:16:58,315 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-11-19 23:16:58,315 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-19 23:16:58,315 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 7 [2019-11-19 23:16:58,316 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844510721] [2019-11-19 23:16:58,316 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-19 23:16:58,316 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 23:16:58,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-19 23:16:58,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-11-19 23:16:58,317 INFO L87 Difference]: Start difference. First operand 79 states and 91 transitions. Second operand 8 states. [2019-11-19 23:16:58,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 23:16:58,407 INFO L93 Difference]: Finished difference Result 80 states and 91 transitions. [2019-11-19 23:16:58,407 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-19 23:16:58,408 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 25 [2019-11-19 23:16:58,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 23:16:58,409 INFO L225 Difference]: With dead ends: 80 [2019-11-19 23:16:58,409 INFO L226 Difference]: Without dead ends: 55 [2019-11-19 23:16:58,409 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2019-11-19 23:16:58,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2019-11-19 23:16:58,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 54. [2019-11-19 23:16:58,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2019-11-19 23:16:58,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 61 transitions. [2019-11-19 23:16:58,416 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 61 transitions. Word has length 25 [2019-11-19 23:16:58,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 23:16:58,416 INFO L462 AbstractCegarLoop]: Abstraction has 54 states and 61 transitions. [2019-11-19 23:16:58,416 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-19 23:16:58,416 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 61 transitions. [2019-11-19 23:16:58,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-11-19 23:16:58,417 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 23:16:58,418 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 23:16:58,620 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 23:16:58,621 INFO L410 AbstractCegarLoop]: === Iteration 10 === [multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-19 23:16:58,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:16:58,621 INFO L82 PathProgramCache]: Analyzing trace with hash 935767789, now seen corresponding path program 1 times [2019-11-19 23:16:58,621 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 23:16:58,621 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937239833] [2019-11-19 23:16:58,621 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 23:16:58,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 23:16:58,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 23:16:58,669 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 23:16:58,669 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-19 23:16:58,694 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 11:16:58 BoogieIcfgContainer [2019-11-19 23:16:58,695 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-19 23:16:58,695 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-19 23:16:58,695 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-19 23:16:58,695 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-19 23:16:58,696 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 11:16:55" (3/4) ... [2019-11-19 23:16:58,698 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-19 23:16:58,753 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_a6eb5f5f-2d06-48b0-90da-064bf303fe62/bin/uautomizer/witness.graphml [2019-11-19 23:16:58,753 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-19 23:16:58,757 INFO L168 Benchmark]: Toolchain (without parser) took 4051.42 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 158.3 MB). Free memory was 946.1 MB in the beginning and 870.2 MB in the end (delta: 75.8 MB). Peak memory consumption was 234.2 MB. Max. memory is 11.5 GB. [2019-11-19 23:16:58,757 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-19 23:16:58,760 INFO L168 Benchmark]: CACSL2BoogieTranslator took 318.22 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 158.3 MB). Free memory was 946.1 MB in the beginning and 1.2 GB in the end (delta: -206.7 MB). Peak memory consumption was 24.6 MB. Max. memory is 11.5 GB. [2019-11-19 23:16:58,760 INFO L168 Benchmark]: Boogie Procedure Inliner took 25.48 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-19 23:16:58,760 INFO L168 Benchmark]: Boogie Preprocessor took 16.68 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. [2019-11-19 23:16:58,761 INFO L168 Benchmark]: RCFGBuilder took 234.90 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 23.6 MB). Peak memory consumption was 23.6 MB. Max. memory is 11.5 GB. [2019-11-19 23:16:58,761 INFO L168 Benchmark]: TraceAbstraction took 3389.34 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 870.2 MB in the end (delta: 255.5 MB). Peak memory consumption was 255.5 MB. Max. memory is 11.5 GB. [2019-11-19 23:16:58,761 INFO L168 Benchmark]: Witness Printer took 59.90 ms. Allocated memory is still 1.2 GB. Free memory is still 870.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-19 23:16:58,763 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 318.22 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 158.3 MB). Free memory was 946.1 MB in the beginning and 1.2 GB in the end (delta: -206.7 MB). Peak memory consumption was 24.6 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 25.48 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 16.68 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 234.90 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 23.6 MB). Peak memory consumption was 23.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3389.34 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 870.2 MB in the end (delta: 255.5 MB). Peak memory consumption was 255.5 MB. Max. memory is 11.5 GB. * Witness Printer took 59.90 ms. Allocated memory is still 1.2 GB. Free memory is still 870.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 22]: integer overflow possible integer overflow possible We found a FailurePath: [L26] int m = __VERIFIER_nondet_int(); [L27] COND FALSE !(m < 0) [L30] int n = __VERIFIER_nondet_int(); [L31] COND FALSE !(n < 0) [L34] CALL mult(m, n) VAL [\old(m)=2, \old(n)=1073741824] [L16] COND FALSE !(m < 0) VAL [\old(m)=2, \old(n)=1073741824, m=2, n=1073741824] [L19] COND FALSE !(m == 0) VAL [\old(m)=2, \old(n)=1073741824, m=2, n=1073741824] [L22] EXPR m - 1 VAL [\old(m)=2, \old(n)=1073741824, m=2, n=1073741824] [L22] CALL, EXPR mult(n, m - 1) VAL [\old(m)=1, \old(n)=1073741824] [L16] COND FALSE !(m < 0) VAL [\old(m)=1, \old(n)=1073741824, m=1, n=1073741824] [L19] COND FALSE !(m == 0) VAL [\old(m)=1, \old(n)=1073741824, m=1, n=1073741824] [L22] EXPR m - 1 VAL [\old(m)=1, \old(n)=1073741824, m=1, n=1073741824] [L22] CALL, EXPR mult(n, m - 1) VAL [\old(m)=0, \old(n)=1073741824] [L16] COND FALSE !(m < 0) VAL [\old(m)=0, \old(n)=1073741824, m=0, n=1073741824] [L19] COND TRUE m == 0 [L20] return 0; VAL [\old(m)=0, \old(n)=1073741824, \result=0, m=0, n=1073741824] [L22] RET, EXPR mult(n, m - 1) VAL [\old(m)=1, \old(n)=1073741824, m=1, mult(n, m - 1)=0, n=1073741824] [L22] EXPR n + mult(n, m - 1) [L22] return n + mult(n, m - 1); [L22] RET, EXPR mult(n, m - 1) VAL [\old(m)=2, \old(n)=1073741824, m=2, mult(n, m - 1)=1073741824, n=1073741824] [L22] n + mult(n, m - 1) VAL [\old(m)=2, \old(n)=1073741824, m=2, mult(n, m - 1)=1073741824, n=1073741824] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 33 locations, 6 error locations. Result: UNSAFE, OverallTime: 3.3s, OverallIterations: 10, TraceHistogramMax: 3, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 204 SDtfs, 240 SDslu, 558 SDs, 0 SdLazy, 487 SolverSat, 66 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 172 GetRequests, 107 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=79occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 47 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 253 NumberOfCodeBlocks, 253 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 212 ConstructedInterpolants, 0 QuantifiedInterpolants, 10090 SizeOfPredicates, 5 NumberOfNonLiveVariables, 234 ConjunctsInSsa, 24 ConjunctsInUnsatCore, 13 InterpolantComputations, 5 PerfectInterpolantSequences, 27/63 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 incorrect! Received shutdown request...