./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 6b5699aa Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_3797ff7c-c923-4a5a-aaf3-48549cec434f/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_3797ff7c-c923-4a5a-aaf3-48549cec434f/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_3797ff7c-c923-4a5a-aaf3-48549cec434f/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_3797ff7c-c923-4a5a-aaf3-48549cec434f/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-numeric/MultCommutative-1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_3797ff7c-c923-4a5a-aaf3-48549cec434f/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_3797ff7c-c923-4a5a-aaf3-48549cec434f/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 0.1.24-6b5699a [2019-11-25 08:56:37,863 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-25 08:56:37,865 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-25 08:56:37,875 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-25 08:56:37,875 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-25 08:56:37,876 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-25 08:56:37,877 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-25 08:56:37,879 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-25 08:56:37,881 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-25 08:56:37,882 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-25 08:56:37,883 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-25 08:56:37,884 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-25 08:56:37,884 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-25 08:56:37,885 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-25 08:56:37,886 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-25 08:56:37,887 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-25 08:56:37,888 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-25 08:56:37,889 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-25 08:56:37,891 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-25 08:56:37,893 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-25 08:56:37,894 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-25 08:56:37,895 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-25 08:56:37,896 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-25 08:56:37,897 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-25 08:56:37,899 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-25 08:56:37,900 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-25 08:56:37,900 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-25 08:56:37,901 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-25 08:56:37,901 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-25 08:56:37,902 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-25 08:56:37,902 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-25 08:56:37,903 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-25 08:56:37,904 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-25 08:56:37,904 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-25 08:56:37,905 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-25 08:56:37,905 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-25 08:56:37,906 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-25 08:56:37,906 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-25 08:56:37,906 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-25 08:56:37,907 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-25 08:56:37,908 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-25 08:56:37,908 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_3797ff7c-c923-4a5a-aaf3-48549cec434f/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf [2019-11-25 08:56:37,920 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-25 08:56:37,921 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-25 08:56:37,921 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-25 08:56:37,922 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-25 08:56:37,922 INFO L138 SettingsManager]: * Use SBE=true [2019-11-25 08:56:37,922 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-25 08:56:37,922 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-25 08:56:37,922 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-25 08:56:37,923 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-25 08:56:37,923 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-25 08:56:37,923 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-25 08:56:37,923 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-25 08:56:37,923 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2019-11-25 08:56:37,923 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-25 08:56:37,924 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-25 08:56:37,924 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-25 08:56:37,924 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-25 08:56:37,924 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-25 08:56:37,924 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-25 08:56:37,925 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-25 08:56:37,925 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-25 08:56:37,925 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-25 08:56:37,925 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-25 08:56:37,925 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-25 08:56:37,926 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-25 08:56:37,926 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-25 08:56:37,926 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-25 08:56:37,926 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_3797ff7c-c923-4a5a-aaf3-48549cec434f/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 [2019-11-25 08:56:38,059 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-25 08:56:38,070 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-25 08:56:38,073 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-25 08:56:38,074 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-25 08:56:38,074 INFO L275 PluginConnector]: CDTParser initialized [2019-11-25 08:56:38,075 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_3797ff7c-c923-4a5a-aaf3-48549cec434f/bin/uautomizer/../../sv-benchmarks/c/termination-numeric/MultCommutative-1.c [2019-11-25 08:56:38,134 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3797ff7c-c923-4a5a-aaf3-48549cec434f/bin/uautomizer/data/9a7f43400/36cca285f4f440b48b08b8dfed20ddf0/FLAGb2acdfa9e [2019-11-25 08:56:38,531 INFO L306 CDTParser]: Found 1 translation units. [2019-11-25 08:56:38,531 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_3797ff7c-c923-4a5a-aaf3-48549cec434f/sv-benchmarks/c/termination-numeric/MultCommutative-1.c [2019-11-25 08:56:38,538 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3797ff7c-c923-4a5a-aaf3-48549cec434f/bin/uautomizer/data/9a7f43400/36cca285f4f440b48b08b8dfed20ddf0/FLAGb2acdfa9e [2019-11-25 08:56:38,963 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_3797ff7c-c923-4a5a-aaf3-48549cec434f/bin/uautomizer/data/9a7f43400/36cca285f4f440b48b08b8dfed20ddf0 [2019-11-25 08:56:38,965 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-25 08:56:38,966 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-25 08:56:38,967 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-25 08:56:38,967 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-25 08:56:38,972 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-25 08:56:38,973 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:56:38" (1/1) ... [2019-11-25 08:56:38,976 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@607dd913 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:38, skipping insertion in model container [2019-11-25 08:56:38,976 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:56:38" (1/1) ... [2019-11-25 08:56:38,984 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-25 08:56:38,997 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-25 08:56:39,134 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:56:39,137 INFO L201 MainTranslator]: Completed pre-run [2019-11-25 08:56:39,220 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:56:39,232 INFO L205 MainTranslator]: Completed translation [2019-11-25 08:56:39,233 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:39 WrapperNode [2019-11-25 08:56:39,233 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-25 08:56:39,234 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-25 08:56:39,234 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-25 08:56:39,234 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-25 08:56:39,242 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:39" (1/1) ... [2019-11-25 08:56:39,246 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:39" (1/1) ... [2019-11-25 08:56:39,262 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-25 08:56:39,263 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-25 08:56:39,263 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-25 08:56:39,263 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-25 08:56:39,271 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:39" (1/1) ... [2019-11-25 08:56:39,272 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:39" (1/1) ... [2019-11-25 08:56:39,273 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:39" (1/1) ... [2019-11-25 08:56:39,273 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:39" (1/1) ... [2019-11-25 08:56:39,275 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:39" (1/1) ... [2019-11-25 08:56:39,277 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:39" (1/1) ... [2019-11-25 08:56:39,278 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:39" (1/1) ... [2019-11-25 08:56:39,286 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-25 08:56:39,287 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-25 08:56:39,287 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-25 08:56:39,287 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-25 08:56:39,288 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:39" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3797ff7c-c923-4a5a-aaf3-48549cec434f/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 [2019-11-25 08:56:39,364 INFO L130 BoogieDeclarations]: Found specification of procedure mult [2019-11-25 08:56:39,364 INFO L138 BoogieDeclarations]: Found implementation of procedure mult [2019-11-25 08:56:39,364 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-25 08:56:39,364 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-25 08:56:39,592 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-25 08:56:39,592 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-25 08:56:39,593 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:56:39 BoogieIcfgContainer [2019-11-25 08:56:39,593 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-25 08:56:39,594 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-25 08:56:39,594 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-25 08:56:39,609 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-25 08:56:39,609 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 08:56:38" (1/3) ... [2019-11-25 08:56:39,610 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51a43962 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:56:39, skipping insertion in model container [2019-11-25 08:56:39,610 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:56:39" (2/3) ... [2019-11-25 08:56:39,611 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51a43962 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:56:39, skipping insertion in model container [2019-11-25 08:56:39,624 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:56:39" (3/3) ... [2019-11-25 08:56:39,625 INFO L109 eAbstractionObserver]: Analyzing ICFG MultCommutative-1.c [2019-11-25 08:56:39,635 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-25 08:56:39,639 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2019-11-25 08:56:39,654 INFO L249 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2019-11-25 08:56:39,688 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-25 08:56:39,688 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-25 08:56:39,688 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-25 08:56:39,688 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-25 08:56:39,688 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-25 08:56:39,689 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-25 08:56:39,689 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-25 08:56:39,689 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-25 08:56:39,717 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2019-11-25 08:56:39,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-25 08:56:39,721 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:56:39,721 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:56:39,722 INFO L410 AbstractCegarLoop]: === Iteration 1 === [multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-25 08:56:39,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:56:39,727 INFO L82 PathProgramCache]: Analyzing trace with hash 887577448, now seen corresponding path program 1 times [2019-11-25 08:56:39,735 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:56:39,736 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295987764] [2019-11-25 08:56:39,736 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:56:39,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:56:39,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:56:39,917 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295987764] [2019-11-25 08:56:39,918 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:56:39,918 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-25 08:56:39,919 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718768880] [2019-11-25 08:56:39,923 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-25 08:56:39,923 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:56:39,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-25 08:56:39,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-25 08:56:39,935 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 5 states. [2019-11-25 08:56:40,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:56:40,067 INFO L93 Difference]: Finished difference Result 80 states and 98 transitions. [2019-11-25 08:56:40,067 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-25 08:56:40,068 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2019-11-25 08:56:40,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:56:40,077 INFO L225 Difference]: With dead ends: 80 [2019-11-25 08:56:40,077 INFO L226 Difference]: Without dead ends: 42 [2019-11-25 08:56:40,081 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 [2019-11-25 08:56:40,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2019-11-25 08:56:40,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 37. [2019-11-25 08:56:40,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-11-25 08:56:40,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 45 transitions. [2019-11-25 08:56:40,128 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 45 transitions. Word has length 7 [2019-11-25 08:56:40,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:56:40,129 INFO L462 AbstractCegarLoop]: Abstraction has 37 states and 45 transitions. [2019-11-25 08:56:40,129 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-25 08:56:40,129 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 45 transitions. [2019-11-25 08:56:40,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-25 08:56:40,130 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:56:40,130 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:56:40,131 INFO L410 AbstractCegarLoop]: === Iteration 2 === [multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-25 08:56:40,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:56:40,131 INFO L82 PathProgramCache]: Analyzing trace with hash 1745104164, now seen corresponding path program 1 times [2019-11-25 08:56:40,131 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:56:40,132 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340931683] [2019-11-25 08:56:40,132 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:56:40,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:56:40,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:56:40,169 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340931683] [2019-11-25 08:56:40,170 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:56:40,170 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-25 08:56:40,170 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139437171] [2019-11-25 08:56:40,171 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-25 08:56:40,172 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:56:40,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-25 08:56:40,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-25 08:56:40,172 INFO L87 Difference]: Start difference. First operand 37 states and 45 transitions. Second operand 5 states. [2019-11-25 08:56:40,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:56:40,281 INFO L93 Difference]: Finished difference Result 58 states and 72 transitions. [2019-11-25 08:56:40,281 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-25 08:56:40,281 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2019-11-25 08:56:40,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:56:40,283 INFO L225 Difference]: With dead ends: 58 [2019-11-25 08:56:40,283 INFO L226 Difference]: Without dead ends: 56 [2019-11-25 08:56:40,284 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 [2019-11-25 08:56:40,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2019-11-25 08:56:40,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 51. [2019-11-25 08:56:40,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2019-11-25 08:56:40,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 64 transitions. [2019-11-25 08:56:40,295 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 64 transitions. Word has length 8 [2019-11-25 08:56:40,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:56:40,295 INFO L462 AbstractCegarLoop]: Abstraction has 51 states and 64 transitions. [2019-11-25 08:56:40,295 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-25 08:56:40,295 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 64 transitions. [2019-11-25 08:56:40,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-25 08:56:40,296 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:56:40,296 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:56:40,297 INFO L410 AbstractCegarLoop]: === Iteration 3 === [multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-25 08:56:40,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:56:40,297 INFO L82 PathProgramCache]: Analyzing trace with hash 80311672, now seen corresponding path program 1 times [2019-11-25 08:56:40,297 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:56:40,297 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924138331] [2019-11-25 08:56:40,298 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:56:40,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:56:40,347 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:56:40,347 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924138331] [2019-11-25 08:56:40,348 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:56:40,348 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-25 08:56:40,348 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077262434] [2019-11-25 08:56:40,348 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-25 08:56:40,349 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:56:40,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-25 08:56:40,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-25 08:56:40,349 INFO L87 Difference]: Start difference. First operand 51 states and 64 transitions. Second operand 5 states. [2019-11-25 08:56:40,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:56:40,431 INFO L93 Difference]: Finished difference Result 106 states and 134 transitions. [2019-11-25 08:56:40,431 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-25 08:56:40,432 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2019-11-25 08:56:40,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:56:40,433 INFO L225 Difference]: With dead ends: 106 [2019-11-25 08:56:40,433 INFO L226 Difference]: Without dead ends: 64 [2019-11-25 08:56:40,435 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 [2019-11-25 08:56:40,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2019-11-25 08:56:40,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 55. [2019-11-25 08:56:40,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2019-11-25 08:56:40,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 67 transitions. [2019-11-25 08:56:40,447 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 67 transitions. Word has length 13 [2019-11-25 08:56:40,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:56:40,448 INFO L462 AbstractCegarLoop]: Abstraction has 55 states and 67 transitions. [2019-11-25 08:56:40,448 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-25 08:56:40,448 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 67 transitions. [2019-11-25 08:56:40,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-25 08:56:40,449 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:56:40,450 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:56:40,450 INFO L410 AbstractCegarLoop]: === Iteration 4 === [multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-25 08:56:40,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:56:40,451 INFO L82 PathProgramCache]: Analyzing trace with hash 1248859076, now seen corresponding path program 1 times [2019-11-25 08:56:40,451 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:56:40,451 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172547276] [2019-11-25 08:56:40,452 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:56:40,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:56:40,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:56:40,527 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:56:40,539 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172547276] [2019-11-25 08:56:40,540 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:56:40,540 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-25 08:56:40,540 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596784730] [2019-11-25 08:56:40,541 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-25 08:56:40,541 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:56:40,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-25 08:56:40,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-25 08:56:40,541 INFO L87 Difference]: Start difference. First operand 55 states and 67 transitions. Second operand 5 states. [2019-11-25 08:56:40,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:56:40,599 INFO L93 Difference]: Finished difference Result 81 states and 95 transitions. [2019-11-25 08:56:40,600 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-25 08:56:40,600 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2019-11-25 08:56:40,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:56:40,601 INFO L225 Difference]: With dead ends: 81 [2019-11-25 08:56:40,601 INFO L226 Difference]: Without dead ends: 54 [2019-11-25 08:56:40,602 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 [2019-11-25 08:56:40,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2019-11-25 08:56:40,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 51. [2019-11-25 08:56:40,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2019-11-25 08:56:40,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 62 transitions. [2019-11-25 08:56:40,609 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 62 transitions. Word has length 14 [2019-11-25 08:56:40,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:56:40,610 INFO L462 AbstractCegarLoop]: Abstraction has 51 states and 62 transitions. [2019-11-25 08:56:40,610 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-25 08:56:40,610 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 62 transitions. [2019-11-25 08:56:40,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-25 08:56:40,611 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:56:40,611 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:56:40,612 INFO L410 AbstractCegarLoop]: === Iteration 5 === [multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-25 08:56:40,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:56:40,612 INFO L82 PathProgramCache]: Analyzing trace with hash 59932744, now seen corresponding path program 1 times [2019-11-25 08:56:40,612 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:56:40,613 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199219509] [2019-11-25 08:56:40,613 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:56:40,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:56:40,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:56:40,666 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:56:40,666 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199219509] [2019-11-25 08:56:40,666 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:56:40,667 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-25 08:56:40,667 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436566810] [2019-11-25 08:56:40,667 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-25 08:56:40,667 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:56:40,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-25 08:56:40,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-25 08:56:40,671 INFO L87 Difference]: Start difference. First operand 51 states and 62 transitions. Second operand 5 states. [2019-11-25 08:56:40,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:56:40,720 INFO L93 Difference]: Finished difference Result 57 states and 67 transitions. [2019-11-25 08:56:40,722 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-25 08:56:40,723 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2019-11-25 08:56:40,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:56:40,724 INFO L225 Difference]: With dead ends: 57 [2019-11-25 08:56:40,724 INFO L226 Difference]: Without dead ends: 56 [2019-11-25 08:56:40,724 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 [2019-11-25 08:56:40,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2019-11-25 08:56:40,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 50. [2019-11-25 08:56:40,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2019-11-25 08:56:40,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 60 transitions. [2019-11-25 08:56:40,732 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 60 transitions. Word has length 15 [2019-11-25 08:56:40,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:56:40,732 INFO L462 AbstractCegarLoop]: Abstraction has 50 states and 60 transitions. [2019-11-25 08:56:40,732 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-25 08:56:40,732 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2019-11-25 08:56:40,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-25 08:56:40,733 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:56:40,733 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:56:40,733 INFO L410 AbstractCegarLoop]: === Iteration 6 === [multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-25 08:56:40,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:56:40,734 INFO L82 PathProgramCache]: Analyzing trace with hash -65083495, now seen corresponding path program 1 times [2019-11-25 08:56:40,734 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:56:40,734 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053618270] [2019-11-25 08:56:40,734 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:56:40,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:56:40,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:56:40,813 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:56:40,813 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053618270] [2019-11-25 08:56:40,814 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1365300257] [2019-11-25 08:56:40,814 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3797ff7c-c923-4a5a-aaf3-48549cec434f/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 [2019-11-25 08:56:40,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:56:40,863 INFO L255 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-25 08:56:40,868 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:56:40,910 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:56:40,910 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:56:40,911 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2019-11-25 08:56:40,911 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187287236] [2019-11-25 08:56:40,911 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-25 08:56:40,911 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:56:40,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-25 08:56:40,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-11-25 08:56:40,912 INFO L87 Difference]: Start difference. First operand 50 states and 60 transitions. Second operand 8 states. [2019-11-25 08:56:41,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:56:41,048 INFO L93 Difference]: Finished difference Result 66 states and 78 transitions. [2019-11-25 08:56:41,049 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-25 08:56:41,049 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 17 [2019-11-25 08:56:41,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:56:41,050 INFO L225 Difference]: With dead ends: 66 [2019-11-25 08:56:41,050 INFO L226 Difference]: Without dead ends: 65 [2019-11-25 08:56:41,051 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 [2019-11-25 08:56:41,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2019-11-25 08:56:41,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 56. [2019-11-25 08:56:41,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2019-11-25 08:56:41,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 67 transitions. [2019-11-25 08:56:41,058 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 67 transitions. Word has length 17 [2019-11-25 08:56:41,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:56:41,058 INFO L462 AbstractCegarLoop]: Abstraction has 56 states and 67 transitions. [2019-11-25 08:56:41,059 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-25 08:56:41,059 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 67 transitions. [2019-11-25 08:56:41,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-25 08:56:41,060 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:56:41,062 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:56:41,265 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:56:41,268 INFO L410 AbstractCegarLoop]: === Iteration 7 === [multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-25 08:56:41,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:56:41,269 INFO L82 PathProgramCache]: Analyzing trace with hash -2017588291, now seen corresponding path program 1 times [2019-11-25 08:56:41,269 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:56:41,269 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532904776] [2019-11-25 08:56:41,269 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:56:41,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:56:41,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:56:41,352 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:56:41,352 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532904776] [2019-11-25 08:56:41,353 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [971630349] [2019-11-25 08:56:41,353 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3797ff7c-c923-4a5a-aaf3-48549cec434f/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 [2019-11-25 08:56:41,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:56:41,387 INFO L255 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-25 08:56:41,388 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:56:41,407 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:56:41,408 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:56:41,408 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 7 [2019-11-25 08:56:41,408 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015313150] [2019-11-25 08:56:41,409 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-25 08:56:41,409 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:56:41,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-25 08:56:41,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-11-25 08:56:41,409 INFO L87 Difference]: Start difference. First operand 56 states and 67 transitions. Second operand 8 states. [2019-11-25 08:56:41,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:56:41,501 INFO L93 Difference]: Finished difference Result 60 states and 70 transitions. [2019-11-25 08:56:41,502 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-25 08:56:41,502 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2019-11-25 08:56:41,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:56:41,503 INFO L225 Difference]: With dead ends: 60 [2019-11-25 08:56:41,503 INFO L226 Difference]: Without dead ends: 59 [2019-11-25 08:56:41,504 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2019-11-25 08:56:41,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2019-11-25 08:56:41,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 56. [2019-11-25 08:56:41,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2019-11-25 08:56:41,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 65 transitions. [2019-11-25 08:56:41,517 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 65 transitions. Word has length 18 [2019-11-25 08:56:41,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:56:41,518 INFO L462 AbstractCegarLoop]: Abstraction has 56 states and 65 transitions. [2019-11-25 08:56:41,518 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-25 08:56:41,518 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 65 transitions. [2019-11-25 08:56:41,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-11-25 08:56:41,520 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:56:41,520 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:56:41,736 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:56:41,736 INFO L410 AbstractCegarLoop]: === Iteration 8 === [multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-25 08:56:41,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:56:41,737 INFO L82 PathProgramCache]: Analyzing trace with hash -1437475595, now seen corresponding path program 1 times [2019-11-25 08:56:41,737 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:56:41,738 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504496690] [2019-11-25 08:56:41,738 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:56:41,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:56:41,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:56:41,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:56:41,861 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-25 08:56:41,862 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504496690] [2019-11-25 08:56:41,862 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [266428026] [2019-11-25 08:56:41,862 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3797ff7c-c923-4a5a-aaf3-48549cec434f/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 [2019-11-25 08:56:41,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:56:41,916 INFO L255 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-25 08:56:41,918 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:56:41,948 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-25 08:56:41,948 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:56:41,948 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 10 [2019-11-25 08:56:41,948 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747472925] [2019-11-25 08:56:41,949 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-25 08:56:41,949 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:56:41,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-25 08:56:41,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2019-11-25 08:56:41,950 INFO L87 Difference]: Start difference. First operand 56 states and 65 transitions. Second operand 11 states. [2019-11-25 08:56:42,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:56:42,187 INFO L93 Difference]: Finished difference Result 86 states and 100 transitions. [2019-11-25 08:56:42,188 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-11-25 08:56:42,188 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 24 [2019-11-25 08:56:42,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:56:42,190 INFO L225 Difference]: With dead ends: 86 [2019-11-25 08:56:42,190 INFO L226 Difference]: Without dead ends: 85 [2019-11-25 08:56:42,191 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 [2019-11-25 08:56:42,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2019-11-25 08:56:42,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 79. [2019-11-25 08:56:42,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2019-11-25 08:56:42,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 91 transitions. [2019-11-25 08:56:42,209 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 91 transitions. Word has length 24 [2019-11-25 08:56:42,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:56:42,210 INFO L462 AbstractCegarLoop]: Abstraction has 79 states and 91 transitions. [2019-11-25 08:56:42,210 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-11-25 08:56:42,210 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 91 transitions. [2019-11-25 08:56:42,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-11-25 08:56:42,212 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:56:42,213 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:56:42,414 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:56:42,414 INFO L410 AbstractCegarLoop]: === Iteration 9 === [multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-25 08:56:42,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:56:42,414 INFO L82 PathProgramCache]: Analyzing trace with hash -1612070431, now seen corresponding path program 1 times [2019-11-25 08:56:42,415 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:56:42,415 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342495868] [2019-11-25 08:56:42,415 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:56:42,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:56:42,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:56:42,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:56:42,477 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-25 08:56:42,478 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342495868] [2019-11-25 08:56:42,478 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1426876488] [2019-11-25 08:56:42,478 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3797ff7c-c923-4a5a-aaf3-48549cec434f/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 [2019-11-25 08:56:42,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:56:42,519 INFO L255 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-25 08:56:42,521 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:56:42,542 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-11-25 08:56:42,542 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:56:42,542 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 7 [2019-11-25 08:56:42,542 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058010409] [2019-11-25 08:56:42,543 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-25 08:56:42,543 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:56:42,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-25 08:56:42,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-11-25 08:56:42,544 INFO L87 Difference]: Start difference. First operand 79 states and 91 transitions. Second operand 8 states. [2019-11-25 08:56:42,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:56:42,669 INFO L93 Difference]: Finished difference Result 80 states and 91 transitions. [2019-11-25 08:56:42,669 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-25 08:56:42,669 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 25 [2019-11-25 08:56:42,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:56:42,670 INFO L225 Difference]: With dead ends: 80 [2019-11-25 08:56:42,670 INFO L226 Difference]: Without dead ends: 55 [2019-11-25 08:56:42,670 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 [2019-11-25 08:56:42,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2019-11-25 08:56:42,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 54. [2019-11-25 08:56:42,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2019-11-25 08:56:42,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 61 transitions. [2019-11-25 08:56:42,682 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 61 transitions. Word has length 25 [2019-11-25 08:56:42,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:56:42,683 INFO L462 AbstractCegarLoop]: Abstraction has 54 states and 61 transitions. [2019-11-25 08:56:42,683 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-25 08:56:42,683 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 61 transitions. [2019-11-25 08:56:42,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-11-25 08:56:42,683 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:56:42,684 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:56:42,884 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:56:42,884 INFO L410 AbstractCegarLoop]: === Iteration 10 === [multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-25 08:56:42,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:56:42,884 INFO L82 PathProgramCache]: Analyzing trace with hash 935767789, now seen corresponding path program 1 times [2019-11-25 08:56:42,885 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:56:42,885 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646423502] [2019-11-25 08:56:42,885 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:56:42,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:56:42,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:56:42,915 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:56:42,916 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-25 08:56:42,941 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 08:56:42 BoogieIcfgContainer [2019-11-25 08:56:42,941 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-25 08:56:42,941 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-25 08:56:42,941 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-25 08:56:42,942 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-25 08:56:42,942 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:56:39" (3/4) ... [2019-11-25 08:56:42,944 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-25 08:56:42,985 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_3797ff7c-c923-4a5a-aaf3-48549cec434f/bin/uautomizer/witness.graphml [2019-11-25 08:56:42,985 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-25 08:56:42,986 INFO L168 Benchmark]: Toolchain (without parser) took 4019.76 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.0 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -164.0 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:56:42,987 INFO L168 Benchmark]: CDTParser took 0.17 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. [2019-11-25 08:56:42,987 INFO L168 Benchmark]: CACSL2BoogieTranslator took 266.01 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.0 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -188.5 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. [2019-11-25 08:56:42,988 INFO L168 Benchmark]: Boogie Procedure Inliner took 28.94 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:56:42,988 INFO L168 Benchmark]: Boogie Preprocessor took 23.69 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2019-11-25 08:56:42,989 INFO L168 Benchmark]: RCFGBuilder took 306.31 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: 18.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. [2019-11-25 08:56:42,989 INFO L168 Benchmark]: TraceAbstraction took 3347.46 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: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. [2019-11-25 08:56:42,989 INFO L168 Benchmark]: Witness Printer took 43.45 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: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. [2019-11-25 08:56:42,992 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 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 266.01 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.0 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -188.5 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 28.94 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. * Boogie Preprocessor took 23.69 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 306.31 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: 18.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3347.46 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: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. * Witness Printer took 43.45 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: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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: 3.2s, OverallIterations: 10, TraceHistogramMax: 3, AutomataDifference: 1.0s, 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, 0.6s 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...