./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/bitvector/byte_add_1-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_d242e0de-3d15-4983-87cd-d5c1f9e7ea51/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_d242e0de-3d15-4983-87cd-d5c1f9e7ea51/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_d242e0de-3d15-4983-87cd-d5c1f9e7ea51/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_d242e0de-3d15-4983-87cd-d5c1f9e7ea51/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/byte_add_1-2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_d242e0de-3d15-4983-87cd-d5c1f9e7ea51/bin/utaipan/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_d242e0de-3d15-4983-87cd-d5c1f9e7ea51/bin/utaipan --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c172e82b435756efbbcf3396e72051c66081518f ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis No suitable file found in config dir /tmp/vcloud-vcloud-master/worker/run_dir_d242e0de-3d15-4983-87cd-d5c1f9e7ea51/bin/utaipan/config using search string *Overflow*32bit*_Bitvector*.epf No suitable settings file found using Overflow*32bit*_Bitvector ERROR: UNSUPPORTED PROPERTY Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-12-07 11:37:51,115 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 11:37:51,116 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 11:37:51,123 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 11:37:51,124 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 11:37:51,124 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 11:37:51,125 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 11:37:51,127 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 11:37:51,128 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 11:37:51,128 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 11:37:51,129 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 11:37:51,130 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 11:37:51,130 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 11:37:51,131 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 11:37:51,131 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 11:37:51,132 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 11:37:51,133 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 11:37:51,133 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 11:37:51,135 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 11:37:51,136 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 11:37:51,137 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 11:37:51,138 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 11:37:51,139 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 11:37:51,139 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 11:37:51,141 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 11:37:51,141 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 11:37:51,141 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 11:37:51,142 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 11:37:51,142 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 11:37:51,142 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 11:37:51,143 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 11:37:51,143 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 11:37:51,143 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 11:37:51,144 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 11:37:51,144 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 11:37:51,145 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 11:37:51,145 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 11:37:51,145 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 11:37:51,145 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 11:37:51,146 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 11:37:51,146 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 11:37:51,147 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_d242e0de-3d15-4983-87cd-d5c1f9e7ea51/bin/utaipan/config/svcomp-Overflow-32bit-Taipan_Default.epf [2019-12-07 11:37:51,156 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 11:37:51,156 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 11:37:51,157 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-12-07 11:37:51,157 INFO L138 SettingsManager]: * User list type=DISABLED [2019-12-07 11:37:51,157 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-12-07 11:37:51,157 INFO L138 SettingsManager]: * Explicit value domain=true [2019-12-07 11:37:51,157 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-12-07 11:37:51,158 INFO L138 SettingsManager]: * Octagon Domain=false [2019-12-07 11:37:51,158 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-12-07 11:37:51,158 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-12-07 11:37:51,158 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-12-07 11:37:51,158 INFO L138 SettingsManager]: * Interval Domain=false [2019-12-07 11:37:51,158 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-12-07 11:37:51,158 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-12-07 11:37:51,158 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-12-07 11:37:51,159 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 11:37:51,159 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 11:37:51,159 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-12-07 11:37:51,159 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 11:37:51,159 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 11:37:51,159 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 11:37:51,160 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 11:37:51,160 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 11:37:51,160 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 11:37:51,160 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2019-12-07 11:37:51,160 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 11:37:51,160 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 11:37:51,160 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 11:37:51,160 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 11:37:51,161 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 11:37:51,161 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 11:37:51,161 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 11:37:51,161 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 11:37:51,161 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 11:37:51,161 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 11:37:51,161 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 11:37:51,162 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-12-07 11:37:51,162 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 11:37:51,162 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 11:37:51,162 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 11:37:51,162 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 11:37:51,162 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_d242e0de-3d15-4983-87cd-d5c1f9e7ea51/bin/utaipan 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 -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c172e82b435756efbbcf3396e72051c66081518f [2019-12-07 11:37:51,265 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 11:37:51,274 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 11:37:51,277 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 11:37:51,278 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 11:37:51,279 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 11:37:51,279 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_d242e0de-3d15-4983-87cd-d5c1f9e7ea51/bin/utaipan/../../sv-benchmarks/c/bitvector/byte_add_1-2.i [2019-12-07 11:37:51,327 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d242e0de-3d15-4983-87cd-d5c1f9e7ea51/bin/utaipan/data/a40c58484/6f6a8d6338f642d8a63c476b50686082/FLAG063fb64ed [2019-12-07 11:37:51,675 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 11:37:51,676 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_d242e0de-3d15-4983-87cd-d5c1f9e7ea51/sv-benchmarks/c/bitvector/byte_add_1-2.i [2019-12-07 11:37:51,680 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d242e0de-3d15-4983-87cd-d5c1f9e7ea51/bin/utaipan/data/a40c58484/6f6a8d6338f642d8a63c476b50686082/FLAG063fb64ed [2019-12-07 11:37:51,692 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_d242e0de-3d15-4983-87cd-d5c1f9e7ea51/bin/utaipan/data/a40c58484/6f6a8d6338f642d8a63c476b50686082 [2019-12-07 11:37:51,694 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 11:37:51,695 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 11:37:51,696 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 11:37:51,696 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 11:37:51,698 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 11:37:51,698 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 11:37:51" (1/1) ... [2019-12-07 11:37:51,700 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52bdc395 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:37:51, skipping insertion in model container [2019-12-07 11:37:51,700 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 11:37:51" (1/1) ... [2019-12-07 11:37:51,706 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 11:37:51,725 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 11:37:51,885 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 11:37:51,887 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 11:37:51,909 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 11:37:51,918 INFO L208 MainTranslator]: Completed translation [2019-12-07 11:37:51,918 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:37:51 WrapperNode [2019-12-07 11:37:51,918 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 11:37:51,918 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 11:37:51,919 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 11:37:51,919 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 11:37:51,924 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:37:51" (1/1) ... [2019-12-07 11:37:51,929 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:37:51" (1/1) ... [2019-12-07 11:37:51,946 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 11:37:51,946 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 11:37:51,946 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 11:37:51,947 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 11:37:51,953 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:37:51" (1/1) ... [2019-12-07 11:37:51,953 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:37:51" (1/1) ... [2019-12-07 11:37:51,954 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:37:51" (1/1) ... [2019-12-07 11:37:51,955 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:37:51" (1/1) ... [2019-12-07 11:37:51,958 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:37:51" (1/1) ... [2019-12-07 11:37:51,961 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:37:51" (1/1) ... [2019-12-07 11:37:51,963 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:37:51" (1/1) ... [2019-12-07 11:37:51,964 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 11:37:51,965 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 11:37:51,965 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 11:37:51,965 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 11:37:51,965 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:37:51" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d242e0de-3d15-4983-87cd-d5c1f9e7ea51/bin/utaipan/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 [2019-12-07 11:37:52,004 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 11:37:52,004 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 11:37:52,350 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 11:37:52,350 INFO L287 CfgBuilder]: Removed 10 assume(true) statements. [2019-12-07 11:37:52,351 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 11:37:52 BoogieIcfgContainer [2019-12-07 11:37:52,351 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 11:37:52,352 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 11:37:52,352 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 11:37:52,354 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 11:37:52,354 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 11:37:51" (1/3) ... [2019-12-07 11:37:52,354 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1257d7e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 11:37:52, skipping insertion in model container [2019-12-07 11:37:52,354 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:37:51" (2/3) ... [2019-12-07 11:37:52,355 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1257d7e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 11:37:52, skipping insertion in model container [2019-12-07 11:37:52,355 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 11:37:52" (3/3) ... [2019-12-07 11:37:52,356 INFO L109 eAbstractionObserver]: Analyzing ICFG byte_add_1-2.i [2019-12-07 11:37:52,362 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 11:37:52,367 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 38 error locations. [2019-12-07 11:37:52,374 INFO L249 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2019-12-07 11:37:52,391 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 11:37:52,391 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 11:37:52,391 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 11:37:52,391 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 11:37:52,392 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 11:37:52,392 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 11:37:52,392 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 11:37:52,392 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 11:37:52,408 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states. [2019-12-07 11:37:52,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-12-07 11:37:52,411 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 11:37:52,411 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-12-07 11:37:52,412 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr34ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr35ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr37ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 11:37:52,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:37:52,416 INFO L82 PathProgramCache]: Analyzing trace with hash 30881, now seen corresponding path program 1 times [2019-12-07 11:37:52,422 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 11:37:52,422 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153270875] [2019-12-07 11:37:52,422 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:37:52,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:37:52,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 11:37:52,502 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153270875] [2019-12-07 11:37:52,503 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 11:37:52,503 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-12-07 11:37:52,504 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437397710] [2019-12-07 11:37:52,506 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-12-07 11:37:52,507 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 11:37:52,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-12-07 11:37:52,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-07 11:37:52,516 INFO L87 Difference]: Start difference. First operand 99 states. Second operand 2 states. [2019-12-07 11:37:52,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 11:37:52,530 INFO L93 Difference]: Finished difference Result 99 states and 116 transitions. [2019-12-07 11:37:52,530 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-12-07 11:37:52,531 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 3 [2019-12-07 11:37:52,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 11:37:52,538 INFO L225 Difference]: With dead ends: 99 [2019-12-07 11:37:52,538 INFO L226 Difference]: Without dead ends: 60 [2019-12-07 11:37:52,540 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-07 11:37:52,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2019-12-07 11:37:52,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2019-12-07 11:37:52,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2019-12-07 11:37:52,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 77 transitions. [2019-12-07 11:37:52,564 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 77 transitions. Word has length 3 [2019-12-07 11:37:52,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 11:37:52,564 INFO L462 AbstractCegarLoop]: Abstraction has 60 states and 77 transitions. [2019-12-07 11:37:52,565 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-12-07 11:37:52,565 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 77 transitions. [2019-12-07 11:37:52,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-12-07 11:37:52,565 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 11:37:52,565 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 11:37:52,566 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr34ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr35ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr37ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 11:37:52,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:37:52,566 INFO L82 PathProgramCache]: Analyzing trace with hash -579982996, now seen corresponding path program 1 times [2019-12-07 11:37:52,566 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 11:37:52,567 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038859806] [2019-12-07 11:37:52,567 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:37:52,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:37:52,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 11:37:52,631 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038859806] [2019-12-07 11:37:52,631 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 11:37:52,631 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 11:37:52,631 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333374342] [2019-12-07 11:37:52,632 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 11:37:52,632 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 11:37:52,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 11:37:52,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 11:37:52,633 INFO L87 Difference]: Start difference. First operand 60 states and 77 transitions. Second operand 3 states. [2019-12-07 11:37:52,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 11:37:52,706 INFO L93 Difference]: Finished difference Result 120 states and 160 transitions. [2019-12-07 11:37:52,706 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 11:37:52,706 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2019-12-07 11:37:52,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 11:37:52,707 INFO L225 Difference]: With dead ends: 120 [2019-12-07 11:37:52,707 INFO L226 Difference]: Without dead ends: 81 [2019-12-07 11:37:52,708 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 11:37:52,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2019-12-07 11:37:52,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 76. [2019-12-07 11:37:52,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2019-12-07 11:37:52,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 96 transitions. [2019-12-07 11:37:52,714 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 96 transitions. Word has length 12 [2019-12-07 11:37:52,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 11:37:52,714 INFO L462 AbstractCegarLoop]: Abstraction has 76 states and 96 transitions. [2019-12-07 11:37:52,714 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 11:37:52,715 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 96 transitions. [2019-12-07 11:37:52,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-12-07 11:37:52,715 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 11:37:52,715 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 11:37:52,716 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr34ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr35ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr37ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 11:37:52,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:37:52,716 INFO L82 PathProgramCache]: Analyzing trace with hash 520109993, now seen corresponding path program 1 times [2019-12-07 11:37:52,716 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 11:37:52,716 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96441983] [2019-12-07 11:37:52,716 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:37:52,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:37:52,801 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 11:37:52,802 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96441983] [2019-12-07 11:37:52,802 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1976189283] [2019-12-07 11:37:52,802 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d242e0de-3d15-4983-87cd-d5c1f9e7ea51/bin/utaipan/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 [2019-12-07 11:37:52,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:37:52,831 INFO L264 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 8 conjunts are in the unsatisfiable core [2019-12-07 11:37:52,834 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 11:37:52,855 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 11:37:52,855 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 11:37:52,886 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 11:37:52,892 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 11:37:52,892 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-12-07 11:37:52,892 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 4] total 10 [2019-12-07 11:37:52,893 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637174198] [2019-12-07 11:37:52,893 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 11:37:52,893 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 11:37:52,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 11:37:52,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2019-12-07 11:37:52,893 INFO L87 Difference]: Start difference. First operand 76 states and 96 transitions. Second operand 5 states. [2019-12-07 11:37:53,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 11:37:53,030 INFO L93 Difference]: Finished difference Result 116 states and 154 transitions. [2019-12-07 11:37:53,031 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 11:37:53,031 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2019-12-07 11:37:53,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 11:37:53,032 INFO L225 Difference]: With dead ends: 116 [2019-12-07 11:37:53,032 INFO L226 Difference]: Without dead ends: 106 [2019-12-07 11:37:53,033 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 24 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2019-12-07 11:37:53,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2019-12-07 11:37:53,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 73. [2019-12-07 11:37:53,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2019-12-07 11:37:53,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 91 transitions. [2019-12-07 11:37:53,038 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 91 transitions. Word has length 15 [2019-12-07 11:37:53,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 11:37:53,038 INFO L462 AbstractCegarLoop]: Abstraction has 73 states and 91 transitions. [2019-12-07 11:37:53,038 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 11:37:53,039 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 91 transitions. [2019-12-07 11:37:53,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-12-07 11:37:53,039 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 11:37:53,039 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 11:37:53,240 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 11:37:53,241 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr34ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr35ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr37ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 11:37:53,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:37:53,242 INFO L82 PathProgramCache]: Analyzing trace with hash 1992013507, now seen corresponding path program 1 times [2019-12-07 11:37:53,243 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 11:37:53,244 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178722352] [2019-12-07 11:37:53,244 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:37:53,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:37:53,411 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 11:37:53,411 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178722352] [2019-12-07 11:37:53,411 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 11:37:53,412 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-12-07 11:37:53,412 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908036147] [2019-12-07 11:37:53,412 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 11:37:53,412 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 11:37:53,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 11:37:53,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-07 11:37:53,413 INFO L87 Difference]: Start difference. First operand 73 states and 91 transitions. Second operand 5 states. [2019-12-07 11:37:53,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 11:37:53,552 INFO L93 Difference]: Finished difference Result 118 states and 148 transitions. [2019-12-07 11:37:53,553 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-12-07 11:37:53,553 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2019-12-07 11:37:53,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 11:37:53,554 INFO L225 Difference]: With dead ends: 118 [2019-12-07 11:37:53,554 INFO L226 Difference]: Without dead ends: 81 [2019-12-07 11:37:53,555 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-12-07 11:37:53,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2019-12-07 11:37:53,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 74. [2019-12-07 11:37:53,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2019-12-07 11:37:53,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 92 transitions. [2019-12-07 11:37:53,561 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 92 transitions. Word has length 18 [2019-12-07 11:37:53,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 11:37:53,562 INFO L462 AbstractCegarLoop]: Abstraction has 74 states and 92 transitions. [2019-12-07 11:37:53,562 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 11:37:53,562 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 92 transitions. [2019-12-07 11:37:53,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-12-07 11:37:53,564 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 11:37:53,564 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 11:37:53,564 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr34ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr35ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr37ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 11:37:53,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:37:53,565 INFO L82 PathProgramCache]: Analyzing trace with hash 401634673, now seen corresponding path program 1 times [2019-12-07 11:37:53,565 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 11:37:53,565 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934314390] [2019-12-07 11:37:53,565 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:37:53,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:37:53,674 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 11:37:53,675 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934314390] [2019-12-07 11:37:53,675 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 11:37:53,675 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-12-07 11:37:53,675 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430090499] [2019-12-07 11:37:53,675 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-07 11:37:53,675 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 11:37:53,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-07 11:37:53,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-12-07 11:37:53,676 INFO L87 Difference]: Start difference. First operand 74 states and 92 transitions. Second operand 6 states. [2019-12-07 11:37:53,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 11:37:53,916 INFO L93 Difference]: Finished difference Result 231 states and 290 transitions. [2019-12-07 11:37:53,916 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-12-07 11:37:53,916 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2019-12-07 11:37:53,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 11:37:53,917 INFO L225 Difference]: With dead ends: 231 [2019-12-07 11:37:53,918 INFO L226 Difference]: Without dead ends: 187 [2019-12-07 11:37:53,918 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-12-07 11:37:53,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2019-12-07 11:37:53,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 107. [2019-12-07 11:37:53,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2019-12-07 11:37:53,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 132 transitions. [2019-12-07 11:37:53,925 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 132 transitions. Word has length 24 [2019-12-07 11:37:53,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 11:37:53,926 INFO L462 AbstractCegarLoop]: Abstraction has 107 states and 132 transitions. [2019-12-07 11:37:53,926 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-07 11:37:53,926 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 132 transitions. [2019-12-07 11:37:53,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-12-07 11:37:53,927 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 11:37:53,927 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 11:37:53,928 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr34ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr35ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr37ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 11:37:53,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:37:53,928 INFO L82 PathProgramCache]: Analyzing trace with hash 880923221, now seen corresponding path program 1 times [2019-12-07 11:37:53,928 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 11:37:53,928 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037766204] [2019-12-07 11:37:53,928 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:37:53,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:37:53,977 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 11:37:53,977 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037766204] [2019-12-07 11:37:53,977 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 11:37:53,977 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-07 11:37:53,978 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175073152] [2019-12-07 11:37:53,978 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 11:37:53,978 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 11:37:53,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 11:37:53,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 11:37:53,978 INFO L87 Difference]: Start difference. First operand 107 states and 132 transitions. Second operand 4 states. [2019-12-07 11:37:54,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 11:37:54,093 INFO L93 Difference]: Finished difference Result 190 states and 252 transitions. [2019-12-07 11:37:54,093 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 11:37:54,093 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2019-12-07 11:37:54,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 11:37:54,094 INFO L225 Difference]: With dead ends: 190 [2019-12-07 11:37:54,094 INFO L226 Difference]: Without dead ends: 152 [2019-12-07 11:37:54,095 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-07 11:37:54,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2019-12-07 11:37:54,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 121. [2019-12-07 11:37:54,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2019-12-07 11:37:54,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 151 transitions. [2019-12-07 11:37:54,100 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 151 transitions. Word has length 24 [2019-12-07 11:37:54,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 11:37:54,101 INFO L462 AbstractCegarLoop]: Abstraction has 121 states and 151 transitions. [2019-12-07 11:37:54,101 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 11:37:54,101 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 151 transitions. [2019-12-07 11:37:54,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-12-07 11:37:54,102 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 11:37:54,103 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 11:37:54,103 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr34ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr35ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr37ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 11:37:54,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:37:54,103 INFO L82 PathProgramCache]: Analyzing trace with hash 805129452, now seen corresponding path program 1 times [2019-12-07 11:37:54,104 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 11:37:54,104 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163862947] [2019-12-07 11:37:54,104 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:37:54,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:37:54,207 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-12-07 11:37:54,208 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163862947] [2019-12-07 11:37:54,208 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 11:37:54,208 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-12-07 11:37:54,208 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052401295] [2019-12-07 11:37:54,208 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-07 11:37:54,208 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 11:37:54,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-07 11:37:54,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-12-07 11:37:54,209 INFO L87 Difference]: Start difference. First operand 121 states and 151 transitions. Second operand 6 states. [2019-12-07 11:37:54,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 11:37:54,413 INFO L93 Difference]: Finished difference Result 339 states and 419 transitions. [2019-12-07 11:37:54,413 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-12-07 11:37:54,413 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 30 [2019-12-07 11:37:54,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 11:37:54,415 INFO L225 Difference]: With dead ends: 339 [2019-12-07 11:37:54,415 INFO L226 Difference]: Without dead ends: 269 [2019-12-07 11:37:54,415 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2019-12-07 11:37:54,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2019-12-07 11:37:54,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 207. [2019-12-07 11:37:54,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2019-12-07 11:37:54,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 258 transitions. [2019-12-07 11:37:54,424 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 258 transitions. Word has length 30 [2019-12-07 11:37:54,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 11:37:54,424 INFO L462 AbstractCegarLoop]: Abstraction has 207 states and 258 transitions. [2019-12-07 11:37:54,424 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-07 11:37:54,425 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 258 transitions. [2019-12-07 11:37:54,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2019-12-07 11:37:54,426 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 11:37:54,426 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 11:37:54,427 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr34ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr35ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr37ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 11:37:54,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:37:54,427 INFO L82 PathProgramCache]: Analyzing trace with hash 1994495935, now seen corresponding path program 1 times [2019-12-07 11:37:54,427 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 11:37:54,427 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327733101] [2019-12-07 11:37:54,427 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:37:54,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:37:54,466 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-12-07 11:37:54,466 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327733101] [2019-12-07 11:37:54,466 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 11:37:54,466 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 11:37:54,466 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109818273] [2019-12-07 11:37:54,467 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 11:37:54,467 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 11:37:54,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 11:37:54,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 11:37:54,467 INFO L87 Difference]: Start difference. First operand 207 states and 258 transitions. Second operand 3 states. [2019-12-07 11:37:54,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 11:37:54,473 INFO L93 Difference]: Finished difference Result 329 states and 415 transitions. [2019-12-07 11:37:54,474 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 11:37:54,474 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 33 [2019-12-07 11:37:54,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 11:37:54,475 INFO L225 Difference]: With dead ends: 329 [2019-12-07 11:37:54,475 INFO L226 Difference]: Without dead ends: 180 [2019-12-07 11:37:54,475 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 11:37:54,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2019-12-07 11:37:54,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 180. [2019-12-07 11:37:54,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2019-12-07 11:37:54,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 223 transitions. [2019-12-07 11:37:54,480 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 223 transitions. Word has length 33 [2019-12-07 11:37:54,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 11:37:54,480 INFO L462 AbstractCegarLoop]: Abstraction has 180 states and 223 transitions. [2019-12-07 11:37:54,480 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 11:37:54,480 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 223 transitions. [2019-12-07 11:37:54,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2019-12-07 11:37:54,481 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 11:37:54,481 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 11:37:54,482 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr34ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr35ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr37ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 11:37:54,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:37:54,482 INFO L82 PathProgramCache]: Analyzing trace with hash -1968270072, now seen corresponding path program 1 times [2019-12-07 11:37:54,482 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 11:37:54,482 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566689733] [2019-12-07 11:37:54,482 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:37:54,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:37:54,552 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 11:37:54,552 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566689733] [2019-12-07 11:37:54,552 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1720647537] [2019-12-07 11:37:54,552 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d242e0de-3d15-4983-87cd-d5c1f9e7ea51/bin/utaipan/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 [2019-12-07 11:37:54,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:37:54,580 INFO L264 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 10 conjunts are in the unsatisfiable core [2019-12-07 11:37:54,582 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 11:37:54,638 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 11:37:54,638 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 11:37:54,692 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 11:37:54,692 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-12-07 11:37:54,692 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 6] total 13 [2019-12-07 11:37:54,692 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250625224] [2019-12-07 11:37:54,692 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-07 11:37:54,692 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 11:37:54,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-07 11:37:54,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2019-12-07 11:37:54,693 INFO L87 Difference]: Start difference. First operand 180 states and 223 transitions. Second operand 6 states. [2019-12-07 11:37:54,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 11:37:54,779 INFO L93 Difference]: Finished difference Result 325 states and 416 transitions. [2019-12-07 11:37:54,780 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 11:37:54,780 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2019-12-07 11:37:54,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 11:37:54,781 INFO L225 Difference]: With dead ends: 325 [2019-12-07 11:37:54,781 INFO L226 Difference]: Without dead ends: 199 [2019-12-07 11:37:54,781 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 56 SyntacticMatches, 6 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2019-12-07 11:37:54,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2019-12-07 11:37:54,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 149. [2019-12-07 11:37:54,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2019-12-07 11:37:54,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 176 transitions. [2019-12-07 11:37:54,785 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 176 transitions. Word has length 33 [2019-12-07 11:37:54,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 11:37:54,786 INFO L462 AbstractCegarLoop]: Abstraction has 149 states and 176 transitions. [2019-12-07 11:37:54,786 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-07 11:37:54,786 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 176 transitions. [2019-12-07 11:37:54,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2019-12-07 11:37:54,787 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 11:37:54,787 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 11:37:54,987 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 11:37:54,989 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr34ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr35ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr37ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 11:37:54,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:37:54,990 INFO L82 PathProgramCache]: Analyzing trace with hash -883743537, now seen corresponding path program 1 times [2019-12-07 11:37:54,990 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 11:37:54,990 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678048161] [2019-12-07 11:37:54,991 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:37:55,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:37:55,209 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 13 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 11:37:55,209 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678048161] [2019-12-07 11:37:55,210 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1029311081] [2019-12-07 11:37:55,210 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d242e0de-3d15-4983-87cd-d5c1f9e7ea51/bin/utaipan/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 [2019-12-07 11:37:55,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:37:55,245 INFO L264 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 8 conjunts are in the unsatisfiable core [2019-12-07 11:37:55,246 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 11:37:55,308 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 28 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-12-07 11:37:55,308 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 11:37:55,368 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 27 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-12-07 11:37:55,368 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [189033037] [2019-12-07 11:37:55,385 INFO L159 IcfgInterpreter]: Started Sifa with 29 locations of interest [2019-12-07 11:37:55,385 INFO L166 IcfgInterpreter]: Building call graph [2019-12-07 11:37:55,389 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-12-07 11:37:55,394 INFO L176 IcfgInterpreter]: Starting interpretation [2019-12-07 11:37:55,395 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-12-07 11:37:55,757 INFO L180 IcfgInterpreter]: Interpretation finished [2019-12-07 11:37:56,272 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2019-12-07 11:37:57,528 WARN L192 SmtUtils]: Spent 1.16 s on a formula simplification. DAG size of input: 146 DAG size of output: 143 [2019-12-07 11:38:07,507 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 11:38:07,507 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-12-07 11:38:07,507 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4, 7] total 13 [2019-12-07 11:38:07,507 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533523165] [2019-12-07 11:38:07,508 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-12-07 11:38:07,508 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 11:38:07,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-12-07 11:38:07,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=789, Unknown=2, NotChecked=0, Total=930 [2019-12-07 11:38:07,508 INFO L87 Difference]: Start difference. First operand 149 states and 176 transitions. Second operand 13 states. [2019-12-07 11:38:07,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 11:38:07,748 INFO L93 Difference]: Finished difference Result 420 states and 542 transitions. [2019-12-07 11:38:07,748 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-12-07 11:38:07,748 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 49 [2019-12-07 11:38:07,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 11:38:07,750 INFO L225 Difference]: With dead ends: 420 [2019-12-07 11:38:07,750 INFO L226 Difference]: Without dead ends: 289 [2019-12-07 11:38:07,750 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 109 SyntacticMatches, 17 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 507 ImplicationChecksByTransitivity, 11.9s TimeCoverageRelationStatistics Valid=139, Invalid=789, Unknown=2, NotChecked=0, Total=930 [2019-12-07 11:38:07,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2019-12-07 11:38:07,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 219. [2019-12-07 11:38:07,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2019-12-07 11:38:07,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 256 transitions. [2019-12-07 11:38:07,756 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 256 transitions. Word has length 49 [2019-12-07 11:38:07,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 11:38:07,756 INFO L462 AbstractCegarLoop]: Abstraction has 219 states and 256 transitions. [2019-12-07 11:38:07,756 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-12-07 11:38:07,756 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 256 transitions. [2019-12-07 11:38:07,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-12-07 11:38:07,757 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 11:38:07,757 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 11:38:07,958 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 11:38:07,959 INFO L410 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr34ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr35ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr37ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 11:38:07,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:38:07,960 INFO L82 PathProgramCache]: Analyzing trace with hash 1329001378, now seen corresponding path program 1 times [2019-12-07 11:38:07,960 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 11:38:07,961 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674918142] [2019-12-07 11:38:07,961 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:38:08,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:38:08,459 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 34 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-12-07 11:38:08,459 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674918142] [2019-12-07 11:38:08,459 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2040164488] [2019-12-07 11:38:08,459 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d242e0de-3d15-4983-87cd-d5c1f9e7ea51/bin/utaipan/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 [2019-12-07 11:38:08,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:38:08,497 INFO L264 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 27 conjunts are in the unsatisfiable core [2019-12-07 11:38:08,500 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 11:38:08,964 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 19 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 11:38:08,964 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 11:38:15,236 WARN L192 SmtUtils]: Spent 6.08 s on a formula simplification. DAG size of input: 27 DAG size of output: 23 [2019-12-07 11:38:17,304 WARN L192 SmtUtils]: Spent 2.03 s on a formula simplification that was a NOOP. DAG size: 26 [2019-12-07 11:38:25,498 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 34 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-12-07 11:38:25,498 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1549352313] [2019-12-07 11:38:25,500 INFO L159 IcfgInterpreter]: Started Sifa with 31 locations of interest [2019-12-07 11:38:25,500 INFO L166 IcfgInterpreter]: Building call graph [2019-12-07 11:38:25,500 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-12-07 11:38:25,500 INFO L176 IcfgInterpreter]: Starting interpretation [2019-12-07 11:38:25,500 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-12-07 11:38:25,656 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2019-12-07 11:38:25,657 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2019-12-07 11:38:25,708 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2019-12-07 11:38:25,710 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2019-12-07 11:38:25,788 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2019-12-07 11:38:25,790 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2019-12-07 11:38:25,859 INFO L180 IcfgInterpreter]: Interpretation finished [2019-12-07 11:38:28,930 WARN L192 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 67 [2019-12-07 11:38:30,520 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 11:38:30,521 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-12-07 11:38:30,521 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 11] total 33 [2019-12-07 11:38:30,521 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91845092] [2019-12-07 11:38:30,521 INFO L442 AbstractCegarLoop]: Interpolant automaton has 34 states [2019-12-07 11:38:30,521 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 11:38:30,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2019-12-07 11:38:30,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=326, Invalid=2118, Unknown=6, NotChecked=0, Total=2450 [2019-12-07 11:38:30,522 INFO L87 Difference]: Start difference. First operand 219 states and 256 transitions. Second operand 34 states. [2019-12-07 11:38:39,126 WARN L192 SmtUtils]: Spent 4.07 s on a formula simplification. DAG size of input: 45 DAG size of output: 30 [2019-12-07 11:38:46,921 WARN L192 SmtUtils]: Spent 2.21 s on a formula simplification. DAG size of input: 51 DAG size of output: 37 [2019-12-07 11:38:48,346 WARN L192 SmtUtils]: Spent 388.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 30 [2019-12-07 11:38:59,827 WARN L192 SmtUtils]: Spent 6.14 s on a formula simplification. DAG size of input: 31 DAG size of output: 28 [2019-12-07 11:39:12,434 WARN L192 SmtUtils]: Spent 6.11 s on a formula simplification. DAG size of input: 49 DAG size of output: 48 [2019-12-07 11:39:35,838 WARN L192 SmtUtils]: Spent 6.08 s on a formula simplification. DAG size of input: 24 DAG size of output: 23 [2019-12-07 11:39:41,655 WARN L192 SmtUtils]: Spent 464.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 51 [2019-12-07 11:39:44,352 WARN L192 SmtUtils]: Spent 2.06 s on a formula simplification. DAG size of input: 47 DAG size of output: 33 [2019-12-07 11:39:52,791 WARN L192 SmtUtils]: Spent 4.12 s on a formula simplification. DAG size of input: 35 DAG size of output: 32 [2019-12-07 11:39:53,364 WARN L192 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 42 [2019-12-07 11:39:58,334 WARN L192 SmtUtils]: Spent 2.08 s on a formula simplification. DAG size of input: 53 DAG size of output: 39 [2019-12-07 11:39:58,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 11:39:58,365 INFO L93 Difference]: Finished difference Result 919 states and 1063 transitions. [2019-12-07 11:39:58,366 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2019-12-07 11:39:58,366 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 57 [2019-12-07 11:39:58,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 11:39:58,369 INFO L225 Difference]: With dead ends: 919 [2019-12-07 11:39:58,369 INFO L226 Difference]: Without dead ends: 708 [2019-12-07 11:39:58,374 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 127 SyntacticMatches, 17 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7265 ImplicationChecksByTransitivity, 89.7s TimeCoverageRelationStatistics Valid=2922, Invalid=16801, Unknown=17, NotChecked=0, Total=19740 [2019-12-07 11:39:58,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 708 states. [2019-12-07 11:39:58,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 708 to 285. [2019-12-07 11:39:58,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 285 states. [2019-12-07 11:39:58,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 340 transitions. [2019-12-07 11:39:58,386 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 340 transitions. Word has length 57 [2019-12-07 11:39:58,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 11:39:58,387 INFO L462 AbstractCegarLoop]: Abstraction has 285 states and 340 transitions. [2019-12-07 11:39:58,387 INFO L463 AbstractCegarLoop]: Interpolant automaton has 34 states. [2019-12-07 11:39:58,387 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 340 transitions. [2019-12-07 11:39:58,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2019-12-07 11:39:58,388 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 11:39:58,388 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 11:39:58,589 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 11:39:58,590 INFO L410 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr34ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr35ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr37ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 11:39:58,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:39:58,591 INFO L82 PathProgramCache]: Analyzing trace with hash 513899336, now seen corresponding path program 1 times [2019-12-07 11:39:58,591 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 11:39:58,592 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202278528] [2019-12-07 11:39:58,592 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:39:58,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:39:58,818 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 21 proven. 29 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-12-07 11:39:58,819 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202278528] [2019-12-07 11:39:58,819 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [915307501] [2019-12-07 11:39:58,819 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d242e0de-3d15-4983-87cd-d5c1f9e7ea51/bin/utaipan/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 11:39:58,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:39:58,852 INFO L264 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 11:39:58,854 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 11:39:58,873 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 21 proven. 9 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-12-07 11:39:58,873 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 11:39:58,934 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 21 proven. 9 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-12-07 11:39:58,934 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [182379608] [2019-12-07 11:39:58,936 INFO L159 IcfgInterpreter]: Started Sifa with 37 locations of interest [2019-12-07 11:39:58,936 INFO L166 IcfgInterpreter]: Building call graph [2019-12-07 11:39:58,937 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-12-07 11:39:58,937 INFO L176 IcfgInterpreter]: Starting interpretation [2019-12-07 11:39:58,937 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-12-07 11:39:59,305 INFO L180 IcfgInterpreter]: Interpretation finished [2019-12-07 11:40:00,901 WARN L192 SmtUtils]: Spent 1.09 s on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2019-12-07 11:40:02,239 WARN L192 SmtUtils]: Spent 406.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 67 [2019-12-07 11:40:03,701 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 11:40:03,701 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-12-07 11:40:03,702 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 4, 5] total 16 [2019-12-07 11:40:03,702 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410306471] [2019-12-07 11:40:03,702 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-12-07 11:40:03,702 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 11:40:03,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-12-07 11:40:03,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=1157, Unknown=0, NotChecked=0, Total=1332 [2019-12-07 11:40:03,703 INFO L87 Difference]: Start difference. First operand 285 states and 340 transitions. Second operand 16 states. [2019-12-07 11:40:04,590 WARN L192 SmtUtils]: Spent 398.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 21 [2019-12-07 11:40:05,043 WARN L192 SmtUtils]: Spent 425.00 ms on a formula simplification that was a NOOP. DAG size: 31 [2019-12-07 11:40:06,338 WARN L192 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 32 DAG size of output: 29 [2019-12-07 11:40:07,486 WARN L192 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 34 DAG size of output: 31 [2019-12-07 11:40:08,521 WARN L192 SmtUtils]: Spent 985.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 32 [2019-12-07 11:40:12,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 11:40:12,559 INFO L93 Difference]: Finished difference Result 1166 states and 1391 transitions. [2019-12-07 11:40:12,560 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2019-12-07 11:40:12,560 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 63 [2019-12-07 11:40:12,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 11:40:12,563 INFO L225 Difference]: With dead ends: 1166 [2019-12-07 11:40:12,563 INFO L226 Difference]: Without dead ends: 887 [2019-12-07 11:40:12,565 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 163 SyntacticMatches, 18 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2460 ImplicationChecksByTransitivity, 10.3s TimeCoverageRelationStatistics Valid=1028, Invalid=5134, Unknown=0, NotChecked=0, Total=6162 [2019-12-07 11:40:12,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 887 states. [2019-12-07 11:40:12,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 887 to 660. [2019-12-07 11:40:12,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 660 states. [2019-12-07 11:40:12,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 660 states to 660 states and 791 transitions. [2019-12-07 11:40:12,581 INFO L78 Accepts]: Start accepts. Automaton has 660 states and 791 transitions. Word has length 63 [2019-12-07 11:40:12,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 11:40:12,581 INFO L462 AbstractCegarLoop]: Abstraction has 660 states and 791 transitions. [2019-12-07 11:40:12,581 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-12-07 11:40:12,581 INFO L276 IsEmpty]: Start isEmpty. Operand 660 states and 791 transitions. [2019-12-07 11:40:12,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2019-12-07 11:40:12,582 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 11:40:12,582 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 11:40:12,782 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 11:40:12,783 INFO L410 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr34ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr35ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr37ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 11:40:12,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:40:12,783 INFO L82 PathProgramCache]: Analyzing trace with hash 1674446524, now seen corresponding path program 1 times [2019-12-07 11:40:12,783 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 11:40:12,783 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472591603] [2019-12-07 11:40:12,783 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:40:12,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:40:12,877 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2019-12-07 11:40:12,878 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472591603] [2019-12-07 11:40:12,878 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 11:40:12,878 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-12-07 11:40:12,878 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790451340] [2019-12-07 11:40:12,878 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-12-07 11:40:12,878 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 11:40:12,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-12-07 11:40:12,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-12-07 11:40:12,879 INFO L87 Difference]: Start difference. First operand 660 states and 791 transitions. Second operand 7 states. [2019-12-07 11:40:13,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 11:40:13,412 INFO L93 Difference]: Finished difference Result 1440 states and 1716 transitions. [2019-12-07 11:40:13,413 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-12-07 11:40:13,413 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 63 [2019-12-07 11:40:13,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 11:40:13,416 INFO L225 Difference]: With dead ends: 1440 [2019-12-07 11:40:13,416 INFO L226 Difference]: Without dead ends: 899 [2019-12-07 11:40:13,417 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2019-12-07 11:40:13,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 899 states. [2019-12-07 11:40:13,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 899 to 811. [2019-12-07 11:40:13,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 811 states. [2019-12-07 11:40:13,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 811 states to 811 states and 971 transitions. [2019-12-07 11:40:13,435 INFO L78 Accepts]: Start accepts. Automaton has 811 states and 971 transitions. Word has length 63 [2019-12-07 11:40:13,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 11:40:13,436 INFO L462 AbstractCegarLoop]: Abstraction has 811 states and 971 transitions. [2019-12-07 11:40:13,436 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-12-07 11:40:13,436 INFO L276 IsEmpty]: Start isEmpty. Operand 811 states and 971 transitions. [2019-12-07 11:40:13,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2019-12-07 11:40:13,437 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 11:40:13,437 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 11:40:13,437 INFO L410 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr34ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr35ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr37ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 11:40:13,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:40:13,437 INFO L82 PathProgramCache]: Analyzing trace with hash -1665317901, now seen corresponding path program 1 times [2019-12-07 11:40:13,437 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 11:40:13,437 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874147896] [2019-12-07 11:40:13,437 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:40:13,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:40:13,570 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2019-12-07 11:40:13,570 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874147896] [2019-12-07 11:40:13,570 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 11:40:13,570 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-12-07 11:40:13,571 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504870054] [2019-12-07 11:40:13,571 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-12-07 11:40:13,571 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 11:40:13,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-12-07 11:40:13,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-12-07 11:40:13,572 INFO L87 Difference]: Start difference. First operand 811 states and 971 transitions. Second operand 8 states. [2019-12-07 11:40:14,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 11:40:14,390 INFO L93 Difference]: Finished difference Result 1716 states and 2047 transitions. [2019-12-07 11:40:14,390 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-12-07 11:40:14,391 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 66 [2019-12-07 11:40:14,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 11:40:14,395 INFO L225 Difference]: With dead ends: 1716 [2019-12-07 11:40:14,395 INFO L226 Difference]: Without dead ends: 1019 [2019-12-07 11:40:14,396 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2019-12-07 11:40:14,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1019 states. [2019-12-07 11:40:14,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1019 to 917. [2019-12-07 11:40:14,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 917 states. [2019-12-07 11:40:14,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 917 states to 917 states and 1099 transitions. [2019-12-07 11:40:14,427 INFO L78 Accepts]: Start accepts. Automaton has 917 states and 1099 transitions. Word has length 66 [2019-12-07 11:40:14,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 11:40:14,427 INFO L462 AbstractCegarLoop]: Abstraction has 917 states and 1099 transitions. [2019-12-07 11:40:14,427 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-12-07 11:40:14,428 INFO L276 IsEmpty]: Start isEmpty. Operand 917 states and 1099 transitions. [2019-12-07 11:40:14,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2019-12-07 11:40:14,429 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 11:40:14,429 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 11:40:14,429 INFO L410 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr34ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr35ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr37ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 11:40:14,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:40:14,430 INFO L82 PathProgramCache]: Analyzing trace with hash 547597391, now seen corresponding path program 1 times [2019-12-07 11:40:14,430 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 11:40:14,430 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045856231] [2019-12-07 11:40:14,430 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:40:14,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:40:14,572 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2019-12-07 11:40:14,572 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045856231] [2019-12-07 11:40:14,573 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 11:40:14,573 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-12-07 11:40:14,573 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845634888] [2019-12-07 11:40:14,573 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-12-07 11:40:14,573 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 11:40:14,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-12-07 11:40:14,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2019-12-07 11:40:14,573 INFO L87 Difference]: Start difference. First operand 917 states and 1099 transitions. Second operand 9 states. [2019-12-07 11:40:15,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 11:40:15,334 INFO L93 Difference]: Finished difference Result 1480 states and 1767 transitions. [2019-12-07 11:40:15,335 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-12-07 11:40:15,335 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 68 [2019-12-07 11:40:15,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 11:40:15,338 INFO L225 Difference]: With dead ends: 1480 [2019-12-07 11:40:15,338 INFO L226 Difference]: Without dead ends: 684 [2019-12-07 11:40:15,339 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2019-12-07 11:40:15,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 684 states. [2019-12-07 11:40:15,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 684 to 630. [2019-12-07 11:40:15,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 630 states. [2019-12-07 11:40:15,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 630 states to 630 states and 741 transitions. [2019-12-07 11:40:15,358 INFO L78 Accepts]: Start accepts. Automaton has 630 states and 741 transitions. Word has length 68 [2019-12-07 11:40:15,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 11:40:15,358 INFO L462 AbstractCegarLoop]: Abstraction has 630 states and 741 transitions. [2019-12-07 11:40:15,358 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-12-07 11:40:15,358 INFO L276 IsEmpty]: Start isEmpty. Operand 630 states and 741 transitions. [2019-12-07 11:40:15,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2019-12-07 11:40:15,359 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 11:40:15,359 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 11:40:15,360 INFO L410 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr34ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr35ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr37ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 11:40:15,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:40:15,360 INFO L82 PathProgramCache]: Analyzing trace with hash 592508733, now seen corresponding path program 1 times [2019-12-07 11:40:15,360 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 11:40:15,360 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823167368] [2019-12-07 11:40:15,360 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:40:15,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:40:15,903 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 4 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 11:40:15,903 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823167368] [2019-12-07 11:40:15,903 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [565266639] [2019-12-07 11:40:15,904 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d242e0de-3d15-4983-87cd-d5c1f9e7ea51/bin/utaipan/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 11:40:15,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:40:15,956 INFO L264 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 32 conjunts are in the unsatisfiable core [2019-12-07 11:40:15,958 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 11:40:16,532 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 32 proven. 29 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-12-07 11:40:16,532 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 11:40:19,632 WARN L192 SmtUtils]: Spent 2.03 s on a formula simplification that was a NOOP. DAG size: 16 [2019-12-07 11:40:19,832 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2019-12-07 11:40:21,965 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 37 [2019-12-07 11:40:28,257 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 52 refuted. 4 times theorem prover too weak. 8 trivial. 0 not checked. [2019-12-07 11:40:28,257 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1178123884] [2019-12-07 11:40:28,259 INFO L159 IcfgInterpreter]: Started Sifa with 44 locations of interest [2019-12-07 11:40:28,259 INFO L166 IcfgInterpreter]: Building call graph [2019-12-07 11:40:28,259 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-12-07 11:40:28,259 INFO L176 IcfgInterpreter]: Starting interpretation [2019-12-07 11:40:28,259 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-12-07 11:40:28,483 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2019-12-07 11:40:28,748 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2019-12-07 11:40:28,999 INFO L180 IcfgInterpreter]: Interpretation finished [2019-12-07 11:40:32,735 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 51 [2019-12-07 11:40:36,339 WARN L192 SmtUtils]: Spent 356.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 67 [2019-12-07 11:40:41,074 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 11:40:41,074 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-12-07 11:40:41,074 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 9, 10] total 34 [2019-12-07 11:40:41,075 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158772796] [2019-12-07 11:40:41,075 INFO L442 AbstractCegarLoop]: Interpolant automaton has 36 states [2019-12-07 11:40:41,075 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 11:40:41,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2019-12-07 11:40:41,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=316, Invalid=2984, Unknown=6, NotChecked=0, Total=3306 [2019-12-07 11:40:41,077 INFO L87 Difference]: Start difference. First operand 630 states and 741 transitions. Second operand 36 states. [2019-12-07 11:40:44,706 WARN L192 SmtUtils]: Spent 777.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 34 [2019-12-07 11:40:45,186 WARN L192 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 35 [2019-12-07 11:40:49,852 WARN L192 SmtUtils]: Spent 3.43 s on a formula simplification. DAG size of input: 85 DAG size of output: 42 [2019-12-07 11:40:51,875 WARN L192 SmtUtils]: Spent 1.09 s on a formula simplification. DAG size of input: 104 DAG size of output: 54 [2019-12-07 11:40:53,960 WARN L192 SmtUtils]: Spent 1.68 s on a formula simplification. DAG size of input: 68 DAG size of output: 50 [2019-12-07 11:40:57,285 WARN L192 SmtUtils]: Spent 2.33 s on a formula simplification. DAG size of input: 74 DAG size of output: 40 [2019-12-07 11:40:58,332 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 37 [2019-12-07 11:41:02,434 WARN L192 SmtUtils]: Spent 2.87 s on a formula simplification. DAG size of input: 89 DAG size of output: 56 [2019-12-07 11:41:05,378 WARN L192 SmtUtils]: Spent 2.13 s on a formula simplification. DAG size of input: 64 DAG size of output: 57 [2019-12-07 11:41:07,970 WARN L192 SmtUtils]: Spent 1.43 s on a formula simplification. DAG size of input: 69 DAG size of output: 45 [2019-12-07 11:41:08,701 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 43 [2019-12-07 11:41:15,522 WARN L192 SmtUtils]: Spent 1.96 s on a formula simplification. DAG size of input: 65 DAG size of output: 52 [2019-12-07 11:41:16,267 WARN L192 SmtUtils]: Spent 491.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 40 [2019-12-07 11:41:17,693 WARN L192 SmtUtils]: Spent 740.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 34 [2019-12-07 11:41:22,532 WARN L192 SmtUtils]: Spent 4.63 s on a formula simplification. DAG size of input: 47 DAG size of output: 26 [2019-12-07 11:41:22,841 WARN L192 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 39 [2019-12-07 11:41:31,217 WARN L192 SmtUtils]: Spent 5.09 s on a formula simplification. DAG size of input: 100 DAG size of output: 65 [2019-12-07 11:41:34,697 WARN L192 SmtUtils]: Spent 2.84 s on a formula simplification. DAG size of input: 90 DAG size of output: 47 [2019-12-07 11:41:38,360 WARN L192 SmtUtils]: Spent 2.68 s on a formula simplification. DAG size of input: 50 DAG size of output: 35 [2019-12-07 11:41:44,135 WARN L192 SmtUtils]: Spent 3.55 s on a formula simplification. DAG size of input: 89 DAG size of output: 48 [2019-12-07 11:41:45,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 11:41:45,658 INFO L93 Difference]: Finished difference Result 1895 states and 2196 transitions. [2019-12-07 11:41:45,658 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2019-12-07 11:41:45,659 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 74 [2019-12-07 11:41:45,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 11:41:45,664 INFO L225 Difference]: With dead ends: 1895 [2019-12-07 11:41:45,664 INFO L226 Difference]: Without dead ends: 1870 [2019-12-07 11:41:45,667 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 154 SyntacticMatches, 26 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3212 ImplicationChecksByTransitivity, 81.2s TimeCoverageRelationStatistics Valid=1560, Invalid=7358, Unknown=12, NotChecked=0, Total=8930 [2019-12-07 11:41:45,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1870 states. [2019-12-07 11:41:45,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1870 to 734. [2019-12-07 11:41:45,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 734 states. [2019-12-07 11:41:45,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 734 states to 734 states and 890 transitions. [2019-12-07 11:41:45,689 INFO L78 Accepts]: Start accepts. Automaton has 734 states and 890 transitions. Word has length 74 [2019-12-07 11:41:45,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 11:41:45,689 INFO L462 AbstractCegarLoop]: Abstraction has 734 states and 890 transitions. [2019-12-07 11:41:45,689 INFO L463 AbstractCegarLoop]: Interpolant automaton has 36 states. [2019-12-07 11:41:45,689 INFO L276 IsEmpty]: Start isEmpty. Operand 734 states and 890 transitions. [2019-12-07 11:41:45,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2019-12-07 11:41:45,690 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 11:41:45,690 INFO L410 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 11:41:45,890 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 11:41:45,891 INFO L410 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr34ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr35ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr37ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 11:41:45,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:41:45,891 INFO L82 PathProgramCache]: Analyzing trace with hash -355363376, now seen corresponding path program 1 times [2019-12-07 11:41:45,891 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 11:41:45,891 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501665948] [2019-12-07 11:41:45,891 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:41:45,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:41:46,023 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-12-07 11:41:46,023 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501665948] [2019-12-07 11:41:46,023 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 11:41:46,024 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-12-07 11:41:46,024 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080622154] [2019-12-07 11:41:46,024 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-07 11:41:46,024 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 11:41:46,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-07 11:41:46,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-12-07 11:41:46,024 INFO L87 Difference]: Start difference. First operand 734 states and 890 transitions. Second operand 6 states. [2019-12-07 11:41:46,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 11:41:46,277 INFO L93 Difference]: Finished difference Result 1695 states and 1994 transitions. [2019-12-07 11:41:46,278 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-12-07 11:41:46,278 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 78 [2019-12-07 11:41:46,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 11:41:46,281 INFO L225 Difference]: With dead ends: 1695 [2019-12-07 11:41:46,281 INFO L226 Difference]: Without dead ends: 768 [2019-12-07 11:41:46,283 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2019-12-07 11:41:46,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 768 states. [2019-12-07 11:41:46,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 768 to 585. [2019-12-07 11:41:46,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 585 states. [2019-12-07 11:41:46,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 669 transitions. [2019-12-07 11:41:46,304 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 669 transitions. Word has length 78 [2019-12-07 11:41:46,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 11:41:46,304 INFO L462 AbstractCegarLoop]: Abstraction has 585 states and 669 transitions. [2019-12-07 11:41:46,304 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-07 11:41:46,304 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 669 transitions. [2019-12-07 11:41:46,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2019-12-07 11:41:46,306 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 11:41:46,306 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 11:41:46,306 INFO L410 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr34ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr35ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr37ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 11:41:46,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:41:46,306 INFO L82 PathProgramCache]: Analyzing trace with hash -1471303122, now seen corresponding path program 1 times [2019-12-07 11:41:46,306 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 11:41:46,307 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858399103] [2019-12-07 11:41:46,307 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:41:46,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:41:46,590 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 13 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 11:41:46,590 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858399103] [2019-12-07 11:41:46,590 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [8537898] [2019-12-07 11:41:46,590 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d242e0de-3d15-4983-87cd-d5c1f9e7ea51/bin/utaipan/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 11:41:46,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:41:46,627 INFO L264 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 8 conjunts are in the unsatisfiable core [2019-12-07 11:41:46,629 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 11:41:46,668 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 13 proven. 15 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2019-12-07 11:41:46,668 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 11:41:46,760 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2019-12-07 11:41:46,761 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [193828518] [2019-12-07 11:41:46,762 INFO L159 IcfgInterpreter]: Started Sifa with 40 locations of interest [2019-12-07 11:41:46,762 INFO L166 IcfgInterpreter]: Building call graph [2019-12-07 11:41:46,762 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-12-07 11:41:46,762 INFO L176 IcfgInterpreter]: Starting interpretation [2019-12-07 11:41:46,762 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-12-07 11:41:46,907 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2019-12-07 11:41:47,575 INFO L180 IcfgInterpreter]: Interpretation finished [2019-12-07 11:41:48,845 WARN L192 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 64 [2019-12-07 11:41:54,791 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 11:41:54,791 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-12-07 11:41:54,792 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 3, 5] total 15 [2019-12-07 11:41:54,792 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514123422] [2019-12-07 11:41:54,792 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-12-07 11:41:54,792 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 11:41:54,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-12-07 11:41:54,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=1022, Unknown=2, NotChecked=0, Total=1190 [2019-12-07 11:41:54,793 INFO L87 Difference]: Start difference. First operand 585 states and 669 transitions. Second operand 16 states. [2019-12-07 11:41:55,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 11:41:55,705 INFO L93 Difference]: Finished difference Result 967 states and 1094 transitions. [2019-12-07 11:41:55,705 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-12-07 11:41:55,705 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 78 [2019-12-07 11:41:55,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 11:41:55,706 INFO L225 Difference]: With dead ends: 967 [2019-12-07 11:41:55,706 INFO L226 Difference]: Without dead ends: 145 [2019-12-07 11:41:55,707 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 191 SyntacticMatches, 22 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 725 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=283, Invalid=1521, Unknown=2, NotChecked=0, Total=1806 [2019-12-07 11:41:55,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2019-12-07 11:41:55,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 106. [2019-12-07 11:41:55,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2019-12-07 11:41:55,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 115 transitions. [2019-12-07 11:41:55,711 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 115 transitions. Word has length 78 [2019-12-07 11:41:55,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 11:41:55,712 INFO L462 AbstractCegarLoop]: Abstraction has 106 states and 115 transitions. [2019-12-07 11:41:55,712 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-12-07 11:41:55,712 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 115 transitions. [2019-12-07 11:41:55,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2019-12-07 11:41:55,712 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 11:41:55,713 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 11:41:55,913 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 11:41:55,914 INFO L410 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr34ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr35ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr37ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 11:41:55,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:41:55,915 INFO L82 PathProgramCache]: Analyzing trace with hash 1271219528, now seen corresponding path program 1 times [2019-12-07 11:41:55,916 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 11:41:55,916 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806908652] [2019-12-07 11:41:55,916 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:41:55,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:41:56,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:41:56,057 INFO L174 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2019-12-07 11:41:56,057 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 11:41:56,090 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 11:41:56 BoogieIcfgContainer [2019-12-07 11:41:56,090 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 11:41:56,090 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 11:41:56,090 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 11:41:56,091 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 11:41:56,091 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 11:37:52" (3/4) ... [2019-12-07 11:41:56,093 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-12-07 11:41:56,093 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 11:41:56,094 INFO L168 Benchmark]: Toolchain (without parser) took 244399.22 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 114.8 MB). Free memory was 947.3 MB in the beginning and 807.0 MB in the end (delta: 140.3 MB). Peak memory consumption was 255.1 MB. Max. memory is 11.5 GB. [2019-12-07 11:41:56,094 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 961.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 11:41:56,095 INFO L168 Benchmark]: CACSL2BoogieTranslator took 222.49 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 85.5 MB). Free memory was 947.3 MB in the beginning and 1.1 GB in the end (delta: -132.1 MB). Peak memory consumption was 22.8 MB. Max. memory is 11.5 GB. [2019-12-07 11:41:56,095 INFO L168 Benchmark]: Boogie Procedure Inliner took 27.83 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-12-07 11:41:56,095 INFO L168 Benchmark]: Boogie Preprocessor took 18.12 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 11:41:56,095 INFO L168 Benchmark]: RCFGBuilder took 386.38 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 50.3 MB). Peak memory consumption was 50.3 MB. Max. memory is 11.5 GB. [2019-12-07 11:41:56,095 INFO L168 Benchmark]: TraceAbstraction took 243738.60 ms. Allocated memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 29.4 MB). Free memory was 1.0 GB in the beginning and 813.5 MB in the end (delta: 210.3 MB). Peak memory consumption was 239.6 MB. Max. memory is 11.5 GB. [2019-12-07 11:41:56,096 INFO L168 Benchmark]: Witness Printer took 2.91 ms. Allocated memory is still 1.1 GB. Free memory was 813.5 MB in the beginning and 807.0 MB in the end (delta: 6.4 MB). Peak memory consumption was 6.4 MB. Max. memory is 11.5 GB. [2019-12-07 11:41:56,097 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 961.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 222.49 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 85.5 MB). Free memory was 947.3 MB in the beginning and 1.1 GB in the end (delta: -132.1 MB). Peak memory consumption was 22.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 27.83 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 18.12 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 386.38 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 50.3 MB). Peak memory consumption was 50.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 243738.60 ms. Allocated memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 29.4 MB). Free memory was 1.0 GB in the beginning and 813.5 MB in the end (delta: 210.3 MB). Peak memory consumption was 239.6 MB. Max. memory is 11.5 GB. * Witness Printer took 2.91 ms. Allocated memory is still 1.1 GB. Free memory was 813.5 MB in the beginning and 807.0 MB in the end (delta: 6.4 MB). Peak memory consumption was 6.4 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 97]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of bitwiseAnd at line 77. Possible FailurePath: [L105] unsigned int a, b, r; [L107] b = __VERIFIER_nondet_uint() [L109] a = 234770789 [L23] unsigned char a0, a1, a2, a3; [L24] unsigned char b0, b1, b2, b3; [L25] unsigned char r0, r1, r2, r3; [L26] unsigned short carry; [L27] unsigned short partial_sum; [L28] unsigned int r; [L29] unsigned char i; [L30] unsigned char na, nb; [L31] a0 = a [L32] a1 = a >> 8 [L33] a2 = a >> 16U [L34] a3 = a >> 24U [L35] b0 = b [L36] b1 = b >> 8U [L37] b2 = b >> 16U [L38] b3 = b >> 24U [L39] na = (unsigned char)4 [L40] COND FALSE !(a3 == (unsigned char)0) [L49] nb = (unsigned char)4 [L50] COND FALSE !(b3 == (unsigned char)0) [L59] carry = (unsigned short)0 [L60] i = (unsigned char)0 [L61] COND TRUE (i < na) || (i < nb) || (carry != (unsigned short)0) [L62] partial_sum = carry [L63] carry = (unsigned short)0 [L64] COND TRUE i < na [L65] COND TRUE i == (unsigned char)0 [L65] EXPR partial_sum + a0 [L65] partial_sum = partial_sum + a0 [L66] COND FALSE !(i == (unsigned char)1) [L67] COND FALSE !(i == (unsigned char)2) [L68] COND FALSE !(i == (unsigned char)3) [L70] COND TRUE i < nb [L71] COND TRUE i == (unsigned char)0 [L71] EXPR partial_sum + b0 [L71] partial_sum = partial_sum + b0 [L72] COND FALSE !(i == (unsigned char)1) [L73] COND FALSE !(i == (unsigned char)2) [L74] COND FALSE !(i == (unsigned char)3) [L76] COND FALSE !(partial_sum > ((unsigned char)255)) [L80] COND TRUE i == (unsigned char)0 [L80] r0 = (unsigned char)partial_sum [L81] COND FALSE !(i == (unsigned char)1) [L82] COND FALSE !(i == (unsigned char)2) [L83] COND FALSE !(i == (unsigned char)3) [L85] EXPR i + (unsigned char)1 [L85] i = i + (unsigned char)1 [L61] COND TRUE (i < na) || (i < nb) || (carry != (unsigned short)0) [L62] partial_sum = carry [L63] carry = (unsigned short)0 [L64] COND TRUE i < na [L65] COND FALSE !(i == (unsigned char)0) [L66] COND TRUE i == (unsigned char)1 [L66] EXPR partial_sum + a1 [L66] partial_sum = partial_sum + a1 [L67] COND FALSE !(i == (unsigned char)2) [L68] COND FALSE !(i == (unsigned char)3) [L70] COND TRUE i < nb [L71] COND FALSE !(i == (unsigned char)0) [L72] COND TRUE i == (unsigned char)1 [L72] EXPR partial_sum + b1 [L72] partial_sum = partial_sum + b1 [L73] COND FALSE !(i == (unsigned char)2) [L74] COND FALSE !(i == (unsigned char)3) [L76] COND TRUE partial_sum > ((unsigned char)255) [L77] partial_sum = partial_sum & ((unsigned char)255) [L78] carry = (unsigned short)1 [L80] COND FALSE !(i == (unsigned char)0) [L81] COND TRUE i == (unsigned char)1 [L81] r1 = (unsigned char)partial_sum [L82] COND FALSE !(i == (unsigned char)2) [L83] COND FALSE !(i == (unsigned char)3) [L85] EXPR i + (unsigned char)1 [L85] i = i + (unsigned char)1 [L61] COND TRUE (i < na) || (i < nb) || (carry != (unsigned short)0) [L62] partial_sum = carry [L63] carry = (unsigned short)0 [L64] COND TRUE i < na [L65] COND FALSE !(i == (unsigned char)0) [L66] COND FALSE !(i == (unsigned char)1) [L67] COND TRUE i == (unsigned char)2 [L67] EXPR partial_sum + a2 [L67] partial_sum = partial_sum + a2 [L68] COND FALSE !(i == (unsigned char)3) [L70] COND TRUE i < nb [L71] COND FALSE !(i == (unsigned char)0) [L72] COND FALSE !(i == (unsigned char)1) [L73] COND TRUE i == (unsigned char)2 [L73] EXPR partial_sum + b2 [L73] partial_sum = partial_sum + b2 [L74] COND FALSE !(i == (unsigned char)3) [L76] COND TRUE partial_sum > ((unsigned char)255) [L77] partial_sum = partial_sum & ((unsigned char)255) [L78] carry = (unsigned short)1 [L80] COND FALSE !(i == (unsigned char)0) [L81] COND FALSE !(i == (unsigned char)1) [L82] COND TRUE i == (unsigned char)2 [L82] r2 = (unsigned char)partial_sum [L83] COND FALSE !(i == (unsigned char)3) [L85] EXPR i + (unsigned char)1 [L85] i = i + (unsigned char)1 [L61] COND TRUE (i < na) || (i < nb) || (carry != (unsigned short)0) [L62] partial_sum = carry [L63] carry = (unsigned short)0 [L64] COND TRUE i < na [L65] COND FALSE !(i == (unsigned char)0) [L66] COND FALSE !(i == (unsigned char)1) [L67] COND FALSE !(i == (unsigned char)2) [L68] COND TRUE i == (unsigned char)3 [L68] EXPR partial_sum + a3 [L68] partial_sum = partial_sum + a3 [L70] COND TRUE i < nb [L71] COND FALSE !(i == (unsigned char)0) [L72] COND FALSE !(i == (unsigned char)1) [L73] COND FALSE !(i == (unsigned char)2) [L74] COND TRUE i == (unsigned char)3 [L74] EXPR partial_sum + b3 [L74] partial_sum = partial_sum + b3 [L76] COND FALSE !(partial_sum > ((unsigned char)255)) [L80] COND FALSE !(i == (unsigned char)0) [L81] COND FALSE !(i == (unsigned char)1) [L82] COND FALSE !(i == (unsigned char)2) [L83] COND TRUE i == (unsigned char)3 [L83] r3 = (unsigned char)partial_sum [L85] EXPR i + (unsigned char)1 [L85] i = i + (unsigned char)1 [L61] COND FALSE !((i < na) || (i < nb) || (carry != (unsigned short)0)) [L88] COND FALSE !(i < (unsigned char)4) [L97] r1 << 8U [L97] r2 << 16U [L97] r3 << 24U - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 99 locations, 38 error locations. Result: UNSAFE, OverallTime: 243.6s, OverallIterations: 19, TraceHistogramMax: 5, AutomataDifference: 165.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 1172 SDtfs, 5976 SDslu, 3536 SDs, 0 SdLazy, 6717 SolverSat, 935 SolverUnsat, 16 SolverUnknown, 0 SolverNotchecked, 33.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1433 GetRequests, 845 SyntacticMatches, 123 SemanticMatches, 465 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14281 ImplicationChecksByTransitivity, 202.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=917occurred in iteration=14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 18 MinimizatonAttempts, 2590 StatesRemovedByMinimization, 16 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 32.1s InterpolantComputationTime, 1241 NumberOfCodeBlocks, 1241 NumberOfCodeBlocksAsserted, 26 NumberOfCheckSat, 1494 ConstructedInterpolants, 74 QuantifiedInterpolants, 901619 SizeOfPredicates, 40 NumberOfNonLiveVariables, 938 ConjunctsInSsa, 97 ConjunctsInUnsatCore, 32 InterpolantComputations, 13 PerfectInterpolantSequences, 780/1158 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 could not prove your program: unable to determine feasibility of some traces Received shutdown request...