./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/bitvector/byte_add_2-1.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_a1203a58-9526-404a-ae11-498a1df8e76c/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_a1203a58-9526-404a-ae11-498a1df8e76c/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_a1203a58-9526-404a-ae11-498a1df8e76c/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_a1203a58-9526-404a-ae11-498a1df8e76c/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/byte_add_2-1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_a1203a58-9526-404a-ae11-498a1df8e76c/bin/utaipan/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_a1203a58-9526-404a-ae11-498a1df8e76c/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 758587bcbf021ce28de3aa106c09f74804dbda1d ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis No suitable file found in config dir /tmp/vcloud-vcloud-master/worker/run_dir_a1203a58-9526-404a-ae11-498a1df8e76c/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 13:45:27,193 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 13:45:27,194 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 13:45:27,202 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 13:45:27,202 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 13:45:27,202 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 13:45:27,203 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 13:45:27,205 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 13:45:27,206 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 13:45:27,206 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 13:45:27,207 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 13:45:27,208 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 13:45:27,208 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 13:45:27,209 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 13:45:27,209 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 13:45:27,210 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 13:45:27,211 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 13:45:27,211 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 13:45:27,213 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 13:45:27,214 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 13:45:27,215 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 13:45:27,216 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 13:45:27,217 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 13:45:27,217 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 13:45:27,219 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 13:45:27,219 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 13:45:27,219 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 13:45:27,220 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 13:45:27,220 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 13:45:27,220 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 13:45:27,220 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 13:45:27,221 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 13:45:27,221 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 13:45:27,222 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 13:45:27,222 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 13:45:27,222 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 13:45:27,223 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 13:45:27,223 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 13:45:27,223 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 13:45:27,224 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 13:45:27,224 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 13:45:27,224 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_a1203a58-9526-404a-ae11-498a1df8e76c/bin/utaipan/config/svcomp-Overflow-32bit-Taipan_Default.epf [2019-12-07 13:45:27,235 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 13:45:27,235 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 13:45:27,235 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-12-07 13:45:27,236 INFO L138 SettingsManager]: * User list type=DISABLED [2019-12-07 13:45:27,236 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-12-07 13:45:27,236 INFO L138 SettingsManager]: * Explicit value domain=true [2019-12-07 13:45:27,236 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-12-07 13:45:27,236 INFO L138 SettingsManager]: * Octagon Domain=false [2019-12-07 13:45:27,236 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-12-07 13:45:27,236 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-12-07 13:45:27,236 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-12-07 13:45:27,237 INFO L138 SettingsManager]: * Interval Domain=false [2019-12-07 13:45:27,237 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-12-07 13:45:27,237 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-12-07 13:45:27,237 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-12-07 13:45:27,237 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 13:45:27,237 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 13:45:27,238 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-12-07 13:45:27,238 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 13:45:27,238 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 13:45:27,238 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 13:45:27,238 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 13:45:27,238 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 13:45:27,238 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 13:45:27,238 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2019-12-07 13:45:27,239 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 13:45:27,239 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 13:45:27,239 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 13:45:27,239 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 13:45:27,239 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 13:45:27,239 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 13:45:27,239 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 13:45:27,239 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 13:45:27,239 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 13:45:27,240 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 13:45:27,240 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 13:45:27,240 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-12-07 13:45:27,240 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 13:45:27,240 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 13:45:27,240 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 13:45:27,240 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 13:45:27,240 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_a1203a58-9526-404a-ae11-498a1df8e76c/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 -> 758587bcbf021ce28de3aa106c09f74804dbda1d [2019-12-07 13:45:27,339 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 13:45:27,346 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 13:45:27,348 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 13:45:27,349 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 13:45:27,350 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 13:45:27,350 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_a1203a58-9526-404a-ae11-498a1df8e76c/bin/utaipan/../../sv-benchmarks/c/bitvector/byte_add_2-1.i [2019-12-07 13:45:27,386 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a1203a58-9526-404a-ae11-498a1df8e76c/bin/utaipan/data/220e706db/a076b2cb34534857becf392d64e81780/FLAGdd7e27d11 [2019-12-07 13:45:27,804 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 13:45:27,804 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_a1203a58-9526-404a-ae11-498a1df8e76c/sv-benchmarks/c/bitvector/byte_add_2-1.i [2019-12-07 13:45:27,809 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a1203a58-9526-404a-ae11-498a1df8e76c/bin/utaipan/data/220e706db/a076b2cb34534857becf392d64e81780/FLAGdd7e27d11 [2019-12-07 13:45:27,817 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_a1203a58-9526-404a-ae11-498a1df8e76c/bin/utaipan/data/220e706db/a076b2cb34534857becf392d64e81780 [2019-12-07 13:45:27,819 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 13:45:27,820 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 13:45:27,821 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 13:45:27,821 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 13:45:27,823 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 13:45:27,823 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 01:45:27" (1/1) ... [2019-12-07 13:45:27,825 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 01:45:27, skipping insertion in model container [2019-12-07 13:45:27,825 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 01:45:27" (1/1) ... [2019-12-07 13:45:27,830 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 13:45:27,845 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 13:45:27,995 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 13:45:27,998 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 13:45:28,020 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 13:45:28,029 INFO L208 MainTranslator]: Completed translation [2019-12-07 13:45:28,030 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:45:28 WrapperNode [2019-12-07 13:45:28,030 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 13:45:28,030 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 13:45:28,030 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 13:45:28,030 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 13:45:28,036 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:45:28" (1/1) ... [2019-12-07 13:45:28,041 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:45:28" (1/1) ... [2019-12-07 13:45:28,058 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 13:45:28,058 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 13:45:28,058 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 13:45:28,058 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 13:45:28,064 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:45:28" (1/1) ... [2019-12-07 13:45:28,064 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:45:28" (1/1) ... [2019-12-07 13:45:28,066 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:45:28" (1/1) ... [2019-12-07 13:45:28,066 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:45:28" (1/1) ... [2019-12-07 13:45:28,070 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:45:28" (1/1) ... [2019-12-07 13:45:28,073 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:45:28" (1/1) ... [2019-12-07 13:45:28,075 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:45:28" (1/1) ... [2019-12-07 13:45:28,077 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 13:45:28,077 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 13:45:28,077 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 13:45:28,077 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 13:45:28,077 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:45:28" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a1203a58-9526-404a-ae11-498a1df8e76c/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 13:45:28,116 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 13:45:28,116 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 13:45:28,467 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 13:45:28,468 INFO L287 CfgBuilder]: Removed 10 assume(true) statements. [2019-12-07 13:45:28,469 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 01:45:28 BoogieIcfgContainer [2019-12-07 13:45:28,469 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 13:45:28,470 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 13:45:28,470 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 13:45:28,472 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 13:45:28,473 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 01:45:27" (1/3) ... [2019-12-07 13:45:28,473 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 01:45:28, skipping insertion in model container [2019-12-07 13:45:28,473 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:45:28" (2/3) ... [2019-12-07 13:45:28,474 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 01:45:28, skipping insertion in model container [2019-12-07 13:45:28,474 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 01:45:28" (3/3) ... [2019-12-07 13:45:28,475 INFO L109 eAbstractionObserver]: Analyzing ICFG byte_add_2-1.i [2019-12-07 13:45:28,485 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 13:45:28,491 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 38 error locations. [2019-12-07 13:45:28,500 INFO L249 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2019-12-07 13:45:28,518 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 13:45:28,518 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 13:45:28,518 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 13:45:28,518 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 13:45:28,518 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 13:45:28,518 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 13:45:28,519 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 13:45:28,519 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 13:45:28,534 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states. [2019-12-07 13:45:28,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-12-07 13:45:28,538 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:45:28,538 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-12-07 13:45:28,539 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 13:45:28,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:45:28,542 INFO L82 PathProgramCache]: Analyzing trace with hash 30881, now seen corresponding path program 1 times [2019-12-07 13:45:28,548 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 13:45:28,549 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153270875] [2019-12-07 13:45:28,549 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:45:28,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:45:28,636 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 13:45:28,637 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153270875] [2019-12-07 13:45:28,637 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 13:45:28,637 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-12-07 13:45:28,638 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437397710] [2019-12-07 13:45:28,641 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-12-07 13:45:28,641 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 13:45:28,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-12-07 13:45:28,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-07 13:45:28,651 INFO L87 Difference]: Start difference. First operand 99 states. Second operand 2 states. [2019-12-07 13:45:28,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:45:28,664 INFO L93 Difference]: Finished difference Result 99 states and 116 transitions. [2019-12-07 13:45:28,665 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-12-07 13:45:28,665 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 3 [2019-12-07 13:45:28,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:45:28,672 INFO L225 Difference]: With dead ends: 99 [2019-12-07 13:45:28,673 INFO L226 Difference]: Without dead ends: 60 [2019-12-07 13:45:28,675 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 13:45:28,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2019-12-07 13:45:28,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2019-12-07 13:45:28,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2019-12-07 13:45:28,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 77 transitions. [2019-12-07 13:45:28,700 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 77 transitions. Word has length 3 [2019-12-07 13:45:28,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:45:28,700 INFO L462 AbstractCegarLoop]: Abstraction has 60 states and 77 transitions. [2019-12-07 13:45:28,700 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-12-07 13:45:28,700 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 77 transitions. [2019-12-07 13:45:28,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-12-07 13:45:28,701 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:45:28,701 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 13:45:28,701 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 13:45:28,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:45:28,702 INFO L82 PathProgramCache]: Analyzing trace with hash -579982996, now seen corresponding path program 1 times [2019-12-07 13:45:28,702 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 13:45:28,702 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038859806] [2019-12-07 13:45:28,702 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:45:28,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:45:28,774 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 13:45:28,774 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038859806] [2019-12-07 13:45:28,774 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 13:45:28,774 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 13:45:28,774 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333374342] [2019-12-07 13:45:28,775 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 13:45:28,775 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 13:45:28,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 13:45:28,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 13:45:28,776 INFO L87 Difference]: Start difference. First operand 60 states and 77 transitions. Second operand 3 states. [2019-12-07 13:45:28,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:45:28,855 INFO L93 Difference]: Finished difference Result 120 states and 160 transitions. [2019-12-07 13:45:28,856 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 13:45:28,856 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2019-12-07 13:45:28,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:45:28,857 INFO L225 Difference]: With dead ends: 120 [2019-12-07 13:45:28,857 INFO L226 Difference]: Without dead ends: 81 [2019-12-07 13:45:28,858 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 13:45:28,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2019-12-07 13:45:28,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 76. [2019-12-07 13:45:28,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2019-12-07 13:45:28,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 96 transitions. [2019-12-07 13:45:28,867 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 96 transitions. Word has length 12 [2019-12-07 13:45:28,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:45:28,867 INFO L462 AbstractCegarLoop]: Abstraction has 76 states and 96 transitions. [2019-12-07 13:45:28,867 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 13:45:28,867 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 96 transitions. [2019-12-07 13:45:28,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-12-07 13:45:28,868 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:45:28,868 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 13:45:28,869 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 13:45:28,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:45:28,869 INFO L82 PathProgramCache]: Analyzing trace with hash 520109993, now seen corresponding path program 1 times [2019-12-07 13:45:28,869 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 13:45:28,869 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96441983] [2019-12-07 13:45:28,870 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:45:28,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:45:28,955 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 13:45:28,955 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96441983] [2019-12-07 13:45:28,956 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1976189283] [2019-12-07 13:45:28,956 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a1203a58-9526-404a-ae11-498a1df8e76c/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 13:45:28,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:45:28,986 INFO L264 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 8 conjunts are in the unsatisfiable core [2019-12-07 13:45:28,989 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 13:45:29,011 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 13:45:29,011 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 13:45:29,045 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 13:45:29,052 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 13:45:29,052 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-12-07 13:45:29,052 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 4] total 10 [2019-12-07 13:45:29,053 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637174198] [2019-12-07 13:45:29,053 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 13:45:29,053 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 13:45:29,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 13:45:29,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2019-12-07 13:45:29,054 INFO L87 Difference]: Start difference. First operand 76 states and 96 transitions. Second operand 5 states. [2019-12-07 13:45:29,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:45:29,187 INFO L93 Difference]: Finished difference Result 116 states and 154 transitions. [2019-12-07 13:45:29,188 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 13:45:29,188 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2019-12-07 13:45:29,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:45:29,189 INFO L225 Difference]: With dead ends: 116 [2019-12-07 13:45:29,189 INFO L226 Difference]: Without dead ends: 106 [2019-12-07 13:45:29,189 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 13:45:29,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2019-12-07 13:45:29,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 73. [2019-12-07 13:45:29,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2019-12-07 13:45:29,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 91 transitions. [2019-12-07 13:45:29,195 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 91 transitions. Word has length 15 [2019-12-07 13:45:29,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:45:29,195 INFO L462 AbstractCegarLoop]: Abstraction has 73 states and 91 transitions. [2019-12-07 13:45:29,195 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 13:45:29,195 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 91 transitions. [2019-12-07 13:45:29,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-12-07 13:45:29,196 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:45:29,196 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 13:45:29,397 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 13:45:29,398 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 13:45:29,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:45:29,398 INFO L82 PathProgramCache]: Analyzing trace with hash 1992013507, now seen corresponding path program 1 times [2019-12-07 13:45:29,398 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 13:45:29,399 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178722352] [2019-12-07 13:45:29,399 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:45:29,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:45:29,512 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 13:45:29,512 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178722352] [2019-12-07 13:45:29,512 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 13:45:29,513 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-12-07 13:45:29,513 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908036147] [2019-12-07 13:45:29,513 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 13:45:29,514 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 13:45:29,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 13:45:29,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-07 13:45:29,515 INFO L87 Difference]: Start difference. First operand 73 states and 91 transitions. Second operand 5 states. [2019-12-07 13:45:29,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:45:29,689 INFO L93 Difference]: Finished difference Result 118 states and 148 transitions. [2019-12-07 13:45:29,690 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-12-07 13:45:29,690 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2019-12-07 13:45:29,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:45:29,691 INFO L225 Difference]: With dead ends: 118 [2019-12-07 13:45:29,691 INFO L226 Difference]: Without dead ends: 81 [2019-12-07 13:45:29,691 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 13:45:29,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2019-12-07 13:45:29,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 74. [2019-12-07 13:45:29,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2019-12-07 13:45:29,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 92 transitions. [2019-12-07 13:45:29,696 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 92 transitions. Word has length 18 [2019-12-07 13:45:29,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:45:29,696 INFO L462 AbstractCegarLoop]: Abstraction has 74 states and 92 transitions. [2019-12-07 13:45:29,696 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 13:45:29,696 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 92 transitions. [2019-12-07 13:45:29,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-12-07 13:45:29,697 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:45:29,697 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 13:45:29,698 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 13:45:29,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:45:29,698 INFO L82 PathProgramCache]: Analyzing trace with hash 401634673, now seen corresponding path program 1 times [2019-12-07 13:45:29,698 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 13:45:29,699 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934314390] [2019-12-07 13:45:29,699 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:45:29,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:45:29,808 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 13:45:29,809 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934314390] [2019-12-07 13:45:29,809 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 13:45:29,809 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-12-07 13:45:29,809 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430090499] [2019-12-07 13:45:29,809 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-07 13:45:29,810 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 13:45:29,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-07 13:45:29,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-12-07 13:45:29,810 INFO L87 Difference]: Start difference. First operand 74 states and 92 transitions. Second operand 6 states. [2019-12-07 13:45:30,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:45:30,049 INFO L93 Difference]: Finished difference Result 231 states and 290 transitions. [2019-12-07 13:45:30,050 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-12-07 13:45:30,050 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2019-12-07 13:45:30,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:45:30,051 INFO L225 Difference]: With dead ends: 231 [2019-12-07 13:45:30,051 INFO L226 Difference]: Without dead ends: 187 [2019-12-07 13:45:30,052 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-12-07 13:45:30,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2019-12-07 13:45:30,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 107. [2019-12-07 13:45:30,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2019-12-07 13:45:30,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 132 transitions. [2019-12-07 13:45:30,060 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 132 transitions. Word has length 24 [2019-12-07 13:45:30,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:45:30,061 INFO L462 AbstractCegarLoop]: Abstraction has 107 states and 132 transitions. [2019-12-07 13:45:30,061 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-07 13:45:30,061 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 132 transitions. [2019-12-07 13:45:30,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-12-07 13:45:30,062 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:45:30,062 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 13:45:30,063 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 13:45:30,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:45:30,063 INFO L82 PathProgramCache]: Analyzing trace with hash 880923221, now seen corresponding path program 1 times [2019-12-07 13:45:30,063 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 13:45:30,063 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037766204] [2019-12-07 13:45:30,064 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:45:30,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:45:30,124 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 13:45:30,124 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037766204] [2019-12-07 13:45:30,124 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 13:45:30,124 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-07 13:45:30,125 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175073152] [2019-12-07 13:45:30,125 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 13:45:30,125 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 13:45:30,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 13:45:30,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 13:45:30,126 INFO L87 Difference]: Start difference. First operand 107 states and 132 transitions. Second operand 4 states. [2019-12-07 13:45:30,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:45:30,235 INFO L93 Difference]: Finished difference Result 190 states and 252 transitions. [2019-12-07 13:45:30,235 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 13:45:30,235 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2019-12-07 13:45:30,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:45:30,236 INFO L225 Difference]: With dead ends: 190 [2019-12-07 13:45:30,236 INFO L226 Difference]: Without dead ends: 152 [2019-12-07 13:45:30,237 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 13:45:30,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2019-12-07 13:45:30,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 121. [2019-12-07 13:45:30,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2019-12-07 13:45:30,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 151 transitions. [2019-12-07 13:45:30,242 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 151 transitions. Word has length 24 [2019-12-07 13:45:30,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:45:30,242 INFO L462 AbstractCegarLoop]: Abstraction has 121 states and 151 transitions. [2019-12-07 13:45:30,242 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 13:45:30,242 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 151 transitions. [2019-12-07 13:45:30,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-12-07 13:45:30,243 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:45:30,244 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 13:45:30,244 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 13:45:30,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:45:30,244 INFO L82 PathProgramCache]: Analyzing trace with hash 805129452, now seen corresponding path program 1 times [2019-12-07 13:45:30,244 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 13:45:30,244 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163862947] [2019-12-07 13:45:30,245 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:45:30,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:45:30,336 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 13:45:30,336 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163862947] [2019-12-07 13:45:30,337 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 13:45:30,337 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-12-07 13:45:30,337 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052401295] [2019-12-07 13:45:30,337 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-07 13:45:30,337 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 13:45:30,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-07 13:45:30,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-12-07 13:45:30,338 INFO L87 Difference]: Start difference. First operand 121 states and 151 transitions. Second operand 6 states. [2019-12-07 13:45:30,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:45:30,546 INFO L93 Difference]: Finished difference Result 339 states and 419 transitions. [2019-12-07 13:45:30,547 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-12-07 13:45:30,547 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 30 [2019-12-07 13:45:30,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:45:30,548 INFO L225 Difference]: With dead ends: 339 [2019-12-07 13:45:30,548 INFO L226 Difference]: Without dead ends: 269 [2019-12-07 13:45:30,549 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 13:45:30,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2019-12-07 13:45:30,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 207. [2019-12-07 13:45:30,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2019-12-07 13:45:30,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 258 transitions. [2019-12-07 13:45:30,557 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 258 transitions. Word has length 30 [2019-12-07 13:45:30,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:45:30,557 INFO L462 AbstractCegarLoop]: Abstraction has 207 states and 258 transitions. [2019-12-07 13:45:30,557 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-07 13:45:30,557 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 258 transitions. [2019-12-07 13:45:30,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2019-12-07 13:45:30,559 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:45:30,559 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 13:45:30,559 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 13:45:30,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:45:30,560 INFO L82 PathProgramCache]: Analyzing trace with hash 1994495935, now seen corresponding path program 1 times [2019-12-07 13:45:30,560 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 13:45:30,560 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327733101] [2019-12-07 13:45:30,560 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:45:30,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:45:30,690 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:45:30,690 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327733101] [2019-12-07 13:45:30,691 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1543856510] [2019-12-07 13:45:30,691 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a1203a58-9526-404a-ae11-498a1df8e76c/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 13:45:30,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:45:30,720 INFO L264 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 12 conjunts are in the unsatisfiable core [2019-12-07 13:45:30,721 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 13:45:30,783 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 13:45:30,783 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 13:45:30,849 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:45:30,850 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-12-07 13:45:30,850 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8, 6] total 16 [2019-12-07 13:45:30,850 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199892162] [2019-12-07 13:45:30,850 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-07 13:45:30,851 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 13:45:30,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-07 13:45:30,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2019-12-07 13:45:30,851 INFO L87 Difference]: Start difference. First operand 207 states and 258 transitions. Second operand 6 states. [2019-12-07 13:45:30,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:45:30,962 INFO L93 Difference]: Finished difference Result 291 states and 364 transitions. [2019-12-07 13:45:30,962 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 13:45:30,962 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2019-12-07 13:45:30,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:45:30,963 INFO L225 Difference]: With dead ends: 291 [2019-12-07 13:45:30,963 INFO L226 Difference]: Without dead ends: 222 [2019-12-07 13:45:30,964 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 56 SyntacticMatches, 5 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2019-12-07 13:45:30,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2019-12-07 13:45:30,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 212. [2019-12-07 13:45:30,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2019-12-07 13:45:30,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 260 transitions. [2019-12-07 13:45:30,969 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 260 transitions. Word has length 33 [2019-12-07 13:45:30,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:45:30,969 INFO L462 AbstractCegarLoop]: Abstraction has 212 states and 260 transitions. [2019-12-07 13:45:30,970 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-07 13:45:30,970 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 260 transitions. [2019-12-07 13:45:30,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2019-12-07 13:45:30,971 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:45:30,971 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 13:45:31,171 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 13:45:31,173 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 13:45:31,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:45:31,173 INFO L82 PathProgramCache]: Analyzing trace with hash -1968270072, now seen corresponding path program 1 times [2019-12-07 13:45:31,173 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 13:45:31,174 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129949741] [2019-12-07 13:45:31,174 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:45:31,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:45:31,243 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 13:45:31,243 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129949741] [2019-12-07 13:45:31,243 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 13:45:31,243 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 13:45:31,244 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649612733] [2019-12-07 13:45:31,244 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 13:45:31,244 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 13:45:31,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 13:45:31,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 13:45:31,245 INFO L87 Difference]: Start difference. First operand 212 states and 260 transitions. Second operand 3 states. [2019-12-07 13:45:31,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:45:31,256 INFO L93 Difference]: Finished difference Result 219 states and 266 transitions. [2019-12-07 13:45:31,256 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 13:45:31,257 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 33 [2019-12-07 13:45:31,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:45:31,258 INFO L225 Difference]: With dead ends: 219 [2019-12-07 13:45:31,259 INFO L226 Difference]: Without dead ends: 112 [2019-12-07 13:45:31,260 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 13:45:31,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2019-12-07 13:45:31,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2019-12-07 13:45:31,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2019-12-07 13:45:31,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 132 transitions. [2019-12-07 13:45:31,268 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 132 transitions. Word has length 33 [2019-12-07 13:45:31,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:45:31,268 INFO L462 AbstractCegarLoop]: Abstraction has 112 states and 132 transitions. [2019-12-07 13:45:31,268 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 13:45:31,268 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 132 transitions. [2019-12-07 13:45:31,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2019-12-07 13:45:31,270 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:45:31,270 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 13:45:31,271 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 13:45:31,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:45:31,272 INFO L82 PathProgramCache]: Analyzing trace with hash 1377095846, now seen corresponding path program 1 times [2019-12-07 13:45:31,272 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 13:45:31,272 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527716113] [2019-12-07 13:45:31,272 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:45:31,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:45:31,392 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 11 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:45:31,392 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527716113] [2019-12-07 13:45:31,393 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1222981749] [2019-12-07 13:45:31,393 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a1203a58-9526-404a-ae11-498a1df8e76c/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 13:45:31,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:45:31,422 INFO L264 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 8 conjunts are in the unsatisfiable core [2019-12-07 13:45:31,424 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 13:45:31,479 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 27 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-12-07 13:45:31,479 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 13:45:31,541 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 26 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-12-07 13:45:31,541 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [172949469] [2019-12-07 13:45:31,556 INFO L159 IcfgInterpreter]: Started Sifa with 29 locations of interest [2019-12-07 13:45:31,556 INFO L166 IcfgInterpreter]: Building call graph [2019-12-07 13:45:31,560 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-12-07 13:45:31,565 INFO L176 IcfgInterpreter]: Starting interpretation [2019-12-07 13:45:31,566 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-12-07 13:45:31,635 INFO L180 IcfgInterpreter]: Interpretation finished [2019-12-07 13:45:32,392 WARN L192 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 54 [2019-12-07 13:45:32,677 WARN L192 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 56 [2019-12-07 13:45:32,678 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2019-12-07 13:45:32,678 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7, 4, 7] total 20 [2019-12-07 13:45:32,679 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38839488] [2019-12-07 13:45:32,679 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-12-07 13:45:32,679 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 13:45:32,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-12-07 13:45:32,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=291, Unknown=0, NotChecked=0, Total=380 [2019-12-07 13:45:32,680 INFO L87 Difference]: Start difference. First operand 112 states and 132 transitions. Second operand 9 states. [2019-12-07 13:45:33,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:45:33,409 INFO L93 Difference]: Finished difference Result 350 states and 419 transitions. [2019-12-07 13:45:33,410 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-12-07 13:45:33,410 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 49 [2019-12-07 13:45:33,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:45:33,411 INFO L225 Difference]: With dead ends: 350 [2019-12-07 13:45:33,411 INFO L226 Difference]: Without dead ends: 277 [2019-12-07 13:45:33,412 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 129 SyntacticMatches, 8 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=89, Invalid=291, Unknown=0, NotChecked=0, Total=380 [2019-12-07 13:45:33,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2019-12-07 13:45:33,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 117. [2019-12-07 13:45:33,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2019-12-07 13:45:33,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 137 transitions. [2019-12-07 13:45:33,417 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 137 transitions. Word has length 49 [2019-12-07 13:45:33,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:45:33,417 INFO L462 AbstractCegarLoop]: Abstraction has 117 states and 137 transitions. [2019-12-07 13:45:33,418 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-12-07 13:45:33,418 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 137 transitions. [2019-12-07 13:45:33,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-12-07 13:45:33,418 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:45:33,418 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, 1, 1, 1] [2019-12-07 13:45:33,618 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 13:45:33,619 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 13:45:33,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:45:33,620 INFO L82 PathProgramCache]: Analyzing trace with hash -575923998, now seen corresponding path program 1 times [2019-12-07 13:45:33,620 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 13:45:33,620 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928346789] [2019-12-07 13:45:33,620 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:45:33,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:45:33,723 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 11 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:45:33,723 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928346789] [2019-12-07 13:45:33,724 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1309182371] [2019-12-07 13:45:33,724 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a1203a58-9526-404a-ae11-498a1df8e76c/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 13:45:33,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:45:33,753 INFO L264 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 8 conjunts are in the unsatisfiable core [2019-12-07 13:45:33,755 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 13:45:33,812 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 27 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-12-07 13:45:33,812 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 13:45:33,879 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 26 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-12-07 13:45:33,880 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1971595376] [2019-12-07 13:45:33,881 INFO L159 IcfgInterpreter]: Started Sifa with 32 locations of interest [2019-12-07 13:45:33,881 INFO L166 IcfgInterpreter]: Building call graph [2019-12-07 13:45:33,881 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-12-07 13:45:33,881 INFO L176 IcfgInterpreter]: Starting interpretation [2019-12-07 13:45:33,881 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-12-07 13:45:33,924 INFO L180 IcfgInterpreter]: Interpretation finished [2019-12-07 13:45:35,132 WARN L192 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 56 [2019-12-07 13:45:35,426 WARN L192 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 58 [2019-12-07 13:45:35,427 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2019-12-07 13:45:35,427 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [7, 4, 7] total 22 [2019-12-07 13:45:35,428 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290233532] [2019-12-07 13:45:35,428 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-12-07 13:45:35,428 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 13:45:35,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-12-07 13:45:35,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=368, Unknown=0, NotChecked=0, Total=462 [2019-12-07 13:45:35,429 INFO L87 Difference]: Start difference. First operand 117 states and 137 transitions. Second operand 11 states. [2019-12-07 13:45:36,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:45:36,496 INFO L93 Difference]: Finished difference Result 429 states and 514 transitions. [2019-12-07 13:45:36,496 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-12-07 13:45:36,496 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 52 [2019-12-07 13:45:36,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:45:36,498 INFO L225 Difference]: With dead ends: 429 [2019-12-07 13:45:36,498 INFO L226 Difference]: Without dead ends: 356 [2019-12-07 13:45:36,498 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 135 SyntacticMatches, 9 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=94, Invalid=368, Unknown=0, NotChecked=0, Total=462 [2019-12-07 13:45:36,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2019-12-07 13:45:36,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 117. [2019-12-07 13:45:36,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2019-12-07 13:45:36,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 137 transitions. [2019-12-07 13:45:36,505 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 137 transitions. Word has length 52 [2019-12-07 13:45:36,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:45:36,505 INFO L462 AbstractCegarLoop]: Abstraction has 117 states and 137 transitions. [2019-12-07 13:45:36,505 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-12-07 13:45:36,505 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 137 transitions. [2019-12-07 13:45:36,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2019-12-07 13:45:36,506 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:45:36,506 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, 1, 1, 1, 1, 1] [2019-12-07 13:45:36,706 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 13:45:36,707 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 13:45:36,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:45:36,708 INFO L82 PathProgramCache]: Analyzing trace with hash 248857246, now seen corresponding path program 1 times [2019-12-07 13:45:36,708 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 13:45:36,709 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409218130] [2019-12-07 13:45:36,709 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:45:36,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:45:36,822 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 11 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:45:36,823 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409218130] [2019-12-07 13:45:36,823 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [637498899] [2019-12-07 13:45:36,823 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a1203a58-9526-404a-ae11-498a1df8e76c/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 13:45:36,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:45:36,853 INFO L264 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 8 conjunts are in the unsatisfiable core [2019-12-07 13:45:36,854 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 13:45:36,913 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 27 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-12-07 13:45:36,914 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 13:45:36,975 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 26 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-12-07 13:45:36,976 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1797328874] [2019-12-07 13:45:36,977 INFO L159 IcfgInterpreter]: Started Sifa with 34 locations of interest [2019-12-07 13:45:36,977 INFO L166 IcfgInterpreter]: Building call graph [2019-12-07 13:45:36,977 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-12-07 13:45:36,977 INFO L176 IcfgInterpreter]: Starting interpretation [2019-12-07 13:45:36,978 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-12-07 13:45:37,017 INFO L180 IcfgInterpreter]: Interpretation finished [2019-12-07 13:45:37,864 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2019-12-07 13:45:37,865 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [7, 4, 7] total 23 [2019-12-07 13:45:37,865 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628152715] [2019-12-07 13:45:37,865 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-12-07 13:45:37,865 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 13:45:37,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-12-07 13:45:37,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=413, Unknown=0, NotChecked=0, Total=506 [2019-12-07 13:45:37,866 INFO L87 Difference]: Start difference. First operand 117 states and 137 transitions. Second operand 12 states. [2019-12-07 13:45:38,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:45:38,657 INFO L93 Difference]: Finished difference Result 429 states and 513 transitions. [2019-12-07 13:45:38,657 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-12-07 13:45:38,657 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 54 [2019-12-07 13:45:38,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:45:38,659 INFO L225 Difference]: With dead ends: 429 [2019-12-07 13:45:38,659 INFO L226 Difference]: Without dead ends: 356 [2019-12-07 13:45:38,659 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 139 SyntacticMatches, 10 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=93, Invalid=413, Unknown=0, NotChecked=0, Total=506 [2019-12-07 13:45:38,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2019-12-07 13:45:38,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 112. [2019-12-07 13:45:38,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2019-12-07 13:45:38,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 131 transitions. [2019-12-07 13:45:38,664 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 131 transitions. Word has length 54 [2019-12-07 13:45:38,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:45:38,664 INFO L462 AbstractCegarLoop]: Abstraction has 112 states and 131 transitions. [2019-12-07 13:45:38,664 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-12-07 13:45:38,664 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 131 transitions. [2019-12-07 13:45:38,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2019-12-07 13:45:38,665 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:45:38,665 INFO L410 BasicCegarLoop]: trace histogram [3, 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] [2019-12-07 13:45:38,865 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 13:45:38,866 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 13:45:38,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:45:38,866 INFO L82 PathProgramCache]: Analyzing trace with hash -1396008968, now seen corresponding path program 1 times [2019-12-07 13:45:38,866 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 13:45:38,866 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456645380] [2019-12-07 13:45:38,867 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:45:38,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:45:38,970 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 27 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-12-07 13:45:38,970 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456645380] [2019-12-07 13:45:38,970 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1236516423] [2019-12-07 13:45:38,971 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a1203a58-9526-404a-ae11-498a1df8e76c/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 13:45:38,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:45:39,000 INFO L264 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 9 conjunts are in the unsatisfiable core [2019-12-07 13:45:39,001 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 13:45:39,098 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 22 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-12-07 13:45:39,098 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 13:45:39,171 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 26 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-12-07 13:45:39,171 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [281403528] [2019-12-07 13:45:39,172 INFO L159 IcfgInterpreter]: Started Sifa with 35 locations of interest [2019-12-07 13:45:39,172 INFO L166 IcfgInterpreter]: Building call graph [2019-12-07 13:45:39,173 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-12-07 13:45:39,173 INFO L176 IcfgInterpreter]: Starting interpretation [2019-12-07 13:45:39,173 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-12-07 13:45:39,388 INFO L180 IcfgInterpreter]: Interpretation finished [2019-12-07 13:45:40,251 WARN L192 SmtUtils]: Spent 494.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2019-12-07 13:45:41,239 WARN L192 SmtUtils]: Spent 712.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 126 [2019-12-07 13:45:47,750 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 13:45:47,750 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-12-07 13:45:47,750 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 7] total 16 [2019-12-07 13:45:47,750 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447379006] [2019-12-07 13:45:47,751 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-12-07 13:45:47,751 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 13:45:47,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-12-07 13:45:47,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=1015, Unknown=1, NotChecked=0, Total=1190 [2019-12-07 13:45:47,752 INFO L87 Difference]: Start difference. First operand 112 states and 131 transitions. Second operand 16 states. [2019-12-07 13:45:48,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:45:48,514 INFO L93 Difference]: Finished difference Result 286 states and 368 transitions. [2019-12-07 13:45:48,514 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-12-07 13:45:48,514 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 55 [2019-12-07 13:45:48,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:45:48,515 INFO L225 Difference]: With dead ends: 286 [2019-12-07 13:45:48,515 INFO L226 Difference]: Without dead ends: 210 [2019-12-07 13:45:48,516 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 126 SyntacticMatches, 22 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 904 ImplicationChecksByTransitivity, 8.9s TimeCoverageRelationStatistics Valid=294, Invalid=1775, Unknown=1, NotChecked=0, Total=2070 [2019-12-07 13:45:48,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2019-12-07 13:45:48,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 172. [2019-12-07 13:45:48,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2019-12-07 13:45:48,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 198 transitions. [2019-12-07 13:45:48,523 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 198 transitions. Word has length 55 [2019-12-07 13:45:48,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:45:48,523 INFO L462 AbstractCegarLoop]: Abstraction has 172 states and 198 transitions. [2019-12-07 13:45:48,523 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-12-07 13:45:48,523 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 198 transitions. [2019-12-07 13:45:48,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2019-12-07 13:45:48,524 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:45:48,524 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 13:45:48,724 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 13:45:48,725 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 13:45:48,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:45:48,726 INFO L82 PathProgramCache]: Analyzing trace with hash -1160773037, now seen corresponding path program 1 times [2019-12-07 13:45:48,726 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 13:45:48,726 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362690064] [2019-12-07 13:45:48,726 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:45:48,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:45:49,113 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 13:45:49,113 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362690064] [2019-12-07 13:45:49,114 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [553457778] [2019-12-07 13:45:49,114 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a1203a58-9526-404a-ae11-498a1df8e76c/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 13:45:49,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:45:49,144 INFO L264 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 27 conjunts are in the unsatisfiable core [2019-12-07 13:45:49,145 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 13:45:49,537 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 16 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:45:49,537 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 13:45:51,811 WARN L192 SmtUtils]: Spent 2.03 s on a formula simplification that was a NOOP. DAG size: 26 [2019-12-07 13:45:55,979 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 13:45:55,979 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [378368717] [2019-12-07 13:45:55,980 INFO L159 IcfgInterpreter]: Started Sifa with 37 locations of interest [2019-12-07 13:45:55,980 INFO L166 IcfgInterpreter]: Building call graph [2019-12-07 13:45:55,981 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-12-07 13:45:55,981 INFO L176 IcfgInterpreter]: Starting interpretation [2019-12-07 13:45:55,981 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-12-07 13:45:56,163 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2019-12-07 13:45:56,165 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2019-12-07 13:45:56,222 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2019-12-07 13:45:56,224 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2019-12-07 13:45:56,260 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2019-12-07 13:45:56,263 INFO L180 IcfgInterpreter]: Interpretation finished [2019-12-07 13:46:02,188 WARN L192 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 67 [2019-12-07 13:46:08,149 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 13:46:08,149 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-12-07 13:46:08,149 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 11] total 32 [2019-12-07 13:46:08,150 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408417469] [2019-12-07 13:46:08,150 INFO L442 AbstractCegarLoop]: Interpolant automaton has 33 states [2019-12-07 13:46:08,150 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 13:46:08,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2019-12-07 13:46:08,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=350, Invalid=2295, Unknown=7, NotChecked=0, Total=2652 [2019-12-07 13:46:08,151 INFO L87 Difference]: Start difference. First operand 172 states and 198 transitions. Second operand 33 states. [2019-12-07 13:46:17,385 WARN L192 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 30 [2019-12-07 13:46:22,587 WARN L192 SmtUtils]: Spent 2.06 s on a formula simplification. DAG size of input: 31 DAG size of output: 28 [2019-12-07 13:46:47,770 WARN L192 SmtUtils]: Spent 4.13 s on a formula simplification. DAG size of input: 35 DAG size of output: 32 [2019-12-07 13:46:47,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:46:47,847 INFO L93 Difference]: Finished difference Result 528 states and 616 transitions. [2019-12-07 13:46:47,847 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2019-12-07 13:46:47,847 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 63 [2019-12-07 13:46:47,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:46:47,849 INFO L225 Difference]: With dead ends: 528 [2019-12-07 13:46:47,849 INFO L226 Difference]: Without dead ends: 383 [2019-12-07 13:46:47,852 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 149 SyntacticMatches, 20 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5106 ImplicationChecksByTransitivity, 43.5s TimeCoverageRelationStatistics Valid=2060, Invalid=11264, Unknown=16, NotChecked=0, Total=13340 [2019-12-07 13:46:47,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2019-12-07 13:46:47,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 185. [2019-12-07 13:46:47,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2019-12-07 13:46:47,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 214 transitions. [2019-12-07 13:46:47,859 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 214 transitions. Word has length 63 [2019-12-07 13:46:47,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:46:47,859 INFO L462 AbstractCegarLoop]: Abstraction has 185 states and 214 transitions. [2019-12-07 13:46:47,859 INFO L463 AbstractCegarLoop]: Interpolant automaton has 33 states. [2019-12-07 13:46:47,860 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 214 transitions. [2019-12-07 13:46:47,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2019-12-07 13:46:47,860 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:46:47,860 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] [2019-12-07 13:46:48,060 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 13:46:48,061 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 13:46:48,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:46:48,062 INFO L82 PathProgramCache]: Analyzing trace with hash -572063431, now seen corresponding path program 1 times [2019-12-07 13:46:48,062 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 13:46:48,062 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879632551] [2019-12-07 13:46:48,062 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:46:48,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:46:48,175 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 37 proven. 5 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-12-07 13:46:48,176 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879632551] [2019-12-07 13:46:48,176 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1043686513] [2019-12-07 13:46:48,176 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a1203a58-9526-404a-ae11-498a1df8e76c/bin/utaipan/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 13:46:48,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:46:48,216 INFO L264 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 10 conjunts are in the unsatisfiable core [2019-12-07 13:46:48,218 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 13:46:48,304 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 37 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-12-07 13:46:48,304 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 13:46:48,478 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 39 proven. 15 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-12-07 13:46:48,478 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [232670621] [2019-12-07 13:46:48,479 INFO L159 IcfgInterpreter]: Started Sifa with 39 locations of interest [2019-12-07 13:46:48,480 INFO L166 IcfgInterpreter]: Building call graph [2019-12-07 13:46:48,480 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-12-07 13:46:48,480 INFO L176 IcfgInterpreter]: Starting interpretation [2019-12-07 13:46:48,480 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-12-07 13:46:48,576 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2019-12-07 13:46:48,715 INFO L180 IcfgInterpreter]: Interpretation finished [2019-12-07 13:46:49,168 WARN L192 SmtUtils]: Spent 398.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 35 [2019-12-07 13:46:49,729 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2019-12-07 13:46:52,774 WARN L192 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 67 [2019-12-07 13:46:54,790 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 13:46:54,790 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-12-07 13:46:54,791 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 7] total 17 [2019-12-07 13:46:54,791 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967664859] [2019-12-07 13:46:54,791 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-12-07 13:46:54,791 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 13:46:54,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-12-07 13:46:54,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=1192, Unknown=2, NotChecked=0, Total=1406 [2019-12-07 13:46:54,792 INFO L87 Difference]: Start difference. First operand 185 states and 214 transitions. Second operand 18 states. [2019-12-07 13:47:03,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:47:03,342 INFO L93 Difference]: Finished difference Result 1051 states and 1239 transitions. [2019-12-07 13:47:03,342 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2019-12-07 13:47:03,342 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 69 [2019-12-07 13:47:03,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:47:03,346 INFO L225 Difference]: With dead ends: 1051 [2019-12-07 13:47:03,346 INFO L226 Difference]: Without dead ends: 879 [2019-12-07 13:47:03,348 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 159 SyntacticMatches, 19 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1896 ImplicationChecksByTransitivity, 13.1s TimeCoverageRelationStatistics Valid=781, Invalid=4183, Unknown=6, NotChecked=0, Total=4970 [2019-12-07 13:47:03,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 879 states. [2019-12-07 13:47:03,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 879 to 706. [2019-12-07 13:47:03,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 706 states. [2019-12-07 13:47:03,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 706 states to 706 states and 830 transitions. [2019-12-07 13:47:03,371 INFO L78 Accepts]: Start accepts. Automaton has 706 states and 830 transitions. Word has length 69 [2019-12-07 13:47:03,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:47:03,371 INFO L462 AbstractCegarLoop]: Abstraction has 706 states and 830 transitions. [2019-12-07 13:47:03,372 INFO L463 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-12-07 13:47:03,372 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states and 830 transitions. [2019-12-07 13:47:03,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2019-12-07 13:47:03,373 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:47:03,373 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 13:47:03,573 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 13:47:03,574 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 13:47:03,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:47:03,575 INFO L82 PathProgramCache]: Analyzing trace with hash 1932707633, now seen corresponding path program 1 times [2019-12-07 13:47:03,575 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 13:47:03,575 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538641625] [2019-12-07 13:47:03,575 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:47:03,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:47:03,766 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 14 proven. 38 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-12-07 13:47:03,767 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538641625] [2019-12-07 13:47:03,767 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [224761205] [2019-12-07 13:47:03,767 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a1203a58-9526-404a-ae11-498a1df8e76c/bin/utaipan/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 13:47:03,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:47:03,814 INFO L264 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 41 conjunts are in the unsatisfiable core [2019-12-07 13:47:03,817 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 13:47:04,117 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 4 proven. 57 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-12-07 13:47:04,117 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 13:47:05,523 WARN L192 SmtUtils]: Spent 793.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2019-12-07 13:47:14,145 WARN L192 SmtUtils]: Spent 959.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 31 [2019-12-07 13:47:19,772 WARN L192 SmtUtils]: Spent 5.28 s on a formula simplification. DAG size of input: 37 DAG size of output: 36 [2019-12-07 13:47:24,019 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:47:24,019 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1558745482] [2019-12-07 13:47:24,020 INFO L159 IcfgInterpreter]: Started Sifa with 44 locations of interest [2019-12-07 13:47:24,020 INFO L166 IcfgInterpreter]: Building call graph [2019-12-07 13:47:24,021 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-12-07 13:47:24,021 INFO L176 IcfgInterpreter]: Starting interpretation [2019-12-07 13:47:24,021 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-12-07 13:47:24,114 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2019-12-07 13:47:24,249 INFO L180 IcfgInterpreter]: Interpretation finished [2019-12-07 13:47:24,728 WARN L192 SmtUtils]: Spent 394.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 35 [2019-12-07 13:47:33,120 WARN L192 SmtUtils]: Spent 1.38 s on a formula simplification. DAG size of input: 70 DAG size of output: 67 [2019-12-07 13:47:36,015 WARN L860 $PredicateComparison]: unable to prove that (or (not (= 1 (mod c_ULTIMATE.start_mp_add_~i~0 256))) (exists ((v_ULTIMATE.start_mp_add_~partial_sum~0_184 Int)) (let ((.cse0 (mod v_ULTIMATE.start_mp_add_~partial_sum~0_184 65536)) (.cse1 (mod c_ULTIMATE.start_mp_add_~b1~0 256))) (let ((.cse2 (+ .cse0 .cse1))) (and (<= 0 (+ .cse0 .cse1 2147483648)) (<= .cse2 2147483647) (= 1 (mod c_ULTIMATE.start_mp_add_~i~0 256)) (= .cse2 c_ULTIMATE.start_mp_add_~partial_sum~0)))))) is different from true [2019-12-07 13:47:39,691 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 13:47:39,691 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-12-07 13:47:39,691 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 12, 14] total 33 [2019-12-07 13:47:39,692 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471670104] [2019-12-07 13:47:39,692 INFO L442 AbstractCegarLoop]: Interpolant automaton has 35 states [2019-12-07 13:47:39,692 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 13:47:39,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2019-12-07 13:47:39,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=364, Invalid=2828, Unknown=4, NotChecked=110, Total=3306 [2019-12-07 13:47:39,693 INFO L87 Difference]: Start difference. First operand 706 states and 830 transitions. Second operand 35 states. [2019-12-07 13:47:41,877 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 33 [2019-12-07 13:47:44,173 WARN L192 SmtUtils]: Spent 1.10 s on a formula simplification. DAG size of input: 61 DAG size of output: 44 [2019-12-07 13:47:52,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:47:52,069 INFO L93 Difference]: Finished difference Result 2435 states and 2809 transitions. [2019-12-07 13:47:52,069 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2019-12-07 13:47:52,069 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 74 [2019-12-07 13:47:52,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:47:52,077 INFO L225 Difference]: With dead ends: 2435 [2019-12-07 13:47:52,077 INFO L226 Difference]: Without dead ends: 2410 [2019-12-07 13:47:52,080 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 151 SyntacticMatches, 21 SemanticMatches, 84 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2976 ImplicationChecksByTransitivity, 46.4s TimeCoverageRelationStatistics Valid=1223, Invalid=5908, Unknown=13, NotChecked=166, Total=7310 [2019-12-07 13:47:52,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2410 states. [2019-12-07 13:47:52,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2410 to 923. [2019-12-07 13:47:52,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 923 states. [2019-12-07 13:47:52,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 923 states to 923 states and 1132 transitions. [2019-12-07 13:47:52,117 INFO L78 Accepts]: Start accepts. Automaton has 923 states and 1132 transitions. Word has length 74 [2019-12-07 13:47:52,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:47:52,117 INFO L462 AbstractCegarLoop]: Abstraction has 923 states and 1132 transitions. [2019-12-07 13:47:52,117 INFO L463 AbstractCegarLoop]: Interpolant automaton has 35 states. [2019-12-07 13:47:52,117 INFO L276 IsEmpty]: Start isEmpty. Operand 923 states and 1132 transitions. [2019-12-07 13:47:52,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2019-12-07 13:47:52,118 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:47:52,118 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 13:47:52,319 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 13:47:52,319 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 13:47:52,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:47:52,319 INFO L82 PathProgramCache]: Analyzing trace with hash -209507124, now seen corresponding path program 1 times [2019-12-07 13:47:52,319 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 13:47:52,319 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633670288] [2019-12-07 13:47:52,320 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:47:52,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:47:52,448 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2019-12-07 13:47:52,449 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633670288] [2019-12-07 13:47:52,449 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 13:47:52,449 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-12-07 13:47:52,449 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508198558] [2019-12-07 13:47:52,449 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-07 13:47:52,449 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 13:47:52,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-07 13:47:52,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-12-07 13:47:52,449 INFO L87 Difference]: Start difference. First operand 923 states and 1132 transitions. Second operand 6 states. [2019-12-07 13:47:52,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:47:52,614 INFO L93 Difference]: Finished difference Result 2005 states and 2431 transitions. [2019-12-07 13:47:52,614 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 13:47:52,614 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 78 [2019-12-07 13:47:52,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:47:52,618 INFO L225 Difference]: With dead ends: 2005 [2019-12-07 13:47:52,618 INFO L226 Difference]: Without dead ends: 1046 [2019-12-07 13:47:52,619 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-12-07 13:47:52,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1046 states. [2019-12-07 13:47:52,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1046 to 877. [2019-12-07 13:47:52,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 877 states. [2019-12-07 13:47:52,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 877 states to 877 states and 1032 transitions. [2019-12-07 13:47:52,649 INFO L78 Accepts]: Start accepts. Automaton has 877 states and 1032 transitions. Word has length 78 [2019-12-07 13:47:52,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:47:52,649 INFO L462 AbstractCegarLoop]: Abstraction has 877 states and 1032 transitions. [2019-12-07 13:47:52,649 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-07 13:47:52,650 INFO L276 IsEmpty]: Start isEmpty. Operand 877 states and 1032 transitions. [2019-12-07 13:47:52,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2019-12-07 13:47:52,650 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:47:52,651 INFO L410 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 13:47:52,651 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 13:47:52,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:47:52,651 INFO L82 PathProgramCache]: Analyzing trace with hash 1358167352, now seen corresponding path program 1 times [2019-12-07 13:47:52,651 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 13:47:52,651 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477534419] [2019-12-07 13:47:52,651 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:47:52,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:47:52,816 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 57 proven. 12 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-12-07 13:47:52,816 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477534419] [2019-12-07 13:47:52,816 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [40646836] [2019-12-07 13:47:52,816 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a1203a58-9526-404a-ae11-498a1df8e76c/bin/utaipan/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 13:47:52,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:47:52,856 INFO L264 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 6 conjunts are in the unsatisfiable core [2019-12-07 13:47:52,857 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 13:47:53,726 WARN L192 SmtUtils]: Spent 422.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2019-12-07 13:47:53,740 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 67 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-12-07 13:47:53,740 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 13:47:54,727 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 55 proven. 19 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-12-07 13:47:54,727 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1967533137] [2019-12-07 13:47:54,728 INFO L159 IcfgInterpreter]: Started Sifa with 42 locations of interest [2019-12-07 13:47:54,729 INFO L166 IcfgInterpreter]: Building call graph [2019-12-07 13:47:54,729 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-12-07 13:47:54,729 INFO L176 IcfgInterpreter]: Starting interpretation [2019-12-07 13:47:54,729 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-12-07 13:47:54,978 INFO L180 IcfgInterpreter]: Interpretation finished [2019-12-07 13:47:55,137 WARN L192 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 35 [2019-12-07 13:48:02,979 WARN L192 SmtUtils]: Spent 4.19 s on a formula simplification. DAG size of input: 70 DAG size of output: 67 [2019-12-07 13:48:10,337 WARN L192 SmtUtils]: Spent 2.06 s on a formula simplification that was a NOOP. DAG size: 23 [2019-12-07 13:48:11,820 WARN L192 SmtUtils]: Spent 711.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 29 [2019-12-07 13:48:12,228 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 13:48:12,228 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-12-07 13:48:12,229 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 19 [2019-12-07 13:48:12,229 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886627272] [2019-12-07 13:48:12,229 INFO L442 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-12-07 13:48:12,229 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 13:48:12,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-12-07 13:48:12,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=218, Invalid=1414, Unknown=8, NotChecked=0, Total=1640 [2019-12-07 13:48:12,230 INFO L87 Difference]: Start difference. First operand 877 states and 1032 transitions. Second operand 19 states. [2019-12-07 13:48:18,061 WARN L192 SmtUtils]: Spent 1.11 s on a formula simplification. DAG size of input: 27 DAG size of output: 21 [2019-12-07 13:48:22,655 WARN L192 SmtUtils]: Spent 2.82 s on a formula simplification that was a NOOP. DAG size: 32 [2019-12-07 13:48:24,377 WARN L192 SmtUtils]: Spent 1.54 s on a formula simplification that was a NOOP. DAG size: 26 [2019-12-07 13:48:26,474 WARN L192 SmtUtils]: Spent 2.04 s on a formula simplification that was a NOOP. DAG size: 28 [2019-12-07 13:48:28,278 WARN L192 SmtUtils]: Spent 1.25 s on a formula simplification. DAG size of input: 32 DAG size of output: 29 [2019-12-07 13:48:31,962 WARN L192 SmtUtils]: Spent 670.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2019-12-07 13:48:32,694 WARN L192 SmtUtils]: Spent 673.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2019-12-07 13:48:36,349 WARN L192 SmtUtils]: Spent 977.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 23 [2019-12-07 13:48:37,392 WARN L192 SmtUtils]: Spent 981.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 25 [2019-12-07 13:48:40,762 WARN L192 SmtUtils]: Spent 1.92 s on a formula simplification that was a NOOP. DAG size: 28 [2019-12-07 13:48:42,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:48:42,459 INFO L93 Difference]: Finished difference Result 2444 states and 2834 transitions. [2019-12-07 13:48:42,459 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2019-12-07 13:48:42,459 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 78 [2019-12-07 13:48:42,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:48:42,462 INFO L225 Difference]: With dead ends: 2444 [2019-12-07 13:48:42,462 INFO L226 Difference]: Without dead ends: 752 [2019-12-07 13:48:42,465 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 216 SyntacticMatches, 20 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3229 ImplicationChecksByTransitivity, 45.3s TimeCoverageRelationStatistics Valid=1312, Invalid=6682, Unknown=16, NotChecked=0, Total=8010 [2019-12-07 13:48:42,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 752 states. [2019-12-07 13:48:42,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 752 to 574. [2019-12-07 13:48:42,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 574 states. [2019-12-07 13:48:42,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 574 states to 574 states and 666 transitions. [2019-12-07 13:48:42,487 INFO L78 Accepts]: Start accepts. Automaton has 574 states and 666 transitions. Word has length 78 [2019-12-07 13:48:42,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:48:42,488 INFO L462 AbstractCegarLoop]: Abstraction has 574 states and 666 transitions. [2019-12-07 13:48:42,488 INFO L463 AbstractCegarLoop]: Interpolant automaton has 19 states. [2019-12-07 13:48:42,488 INFO L276 IsEmpty]: Start isEmpty. Operand 574 states and 666 transitions. [2019-12-07 13:48:42,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2019-12-07 13:48:42,488 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:48:42,488 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 13:48:42,689 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 13:48:42,689 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 13:48:42,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:48:42,690 INFO L82 PathProgramCache]: Analyzing trace with hash 1271219528, now seen corresponding path program 1 times [2019-12-07 13:48:42,690 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 13:48:42,690 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595435600] [2019-12-07 13:48:42,690 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:48:42,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 13:48:42,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 13:48:42,823 INFO L174 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2019-12-07 13:48:42,823 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 13:48:42,855 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 01:48:42 BoogieIcfgContainer [2019-12-07 13:48:42,856 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 13:48:42,856 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 13:48:42,856 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 13:48:42,856 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 13:48:42,856 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 01:45:28" (3/4) ... [2019-12-07 13:48:42,859 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-12-07 13:48:42,859 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 13:48:42,860 INFO L168 Benchmark]: Toolchain (without parser) took 195039.99 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 126.9 MB). Free memory was 943.5 MB in the beginning and 1.1 GB in the end (delta: -155.4 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 13:48:42,860 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 958.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 13:48:42,860 INFO L168 Benchmark]: CACSL2BoogieTranslator took 209.33 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 93.3 MB). Free memory was 943.5 MB in the beginning and 1.1 GB in the end (delta: -144.6 MB). Peak memory consumption was 24.3 MB. Max. memory is 11.5 GB. [2019-12-07 13:48:42,861 INFO L168 Benchmark]: Boogie Procedure Inliner took 27.79 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 13:48:42,861 INFO L168 Benchmark]: Boogie Preprocessor took 18.53 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 13:48:42,861 INFO L168 Benchmark]: RCFGBuilder took 392.13 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: 45.2 MB). Peak memory consumption was 45.2 MB. Max. memory is 11.5 GB. [2019-12-07 13:48:42,861 INFO L168 Benchmark]: TraceAbstraction took 194385.94 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 33.6 MB). Free memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: -61.4 MB). Peak memory consumption was 290.9 MB. Max. memory is 11.5 GB. [2019-12-07 13:48:42,862 INFO L168 Benchmark]: Witness Printer took 3.14 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 13:48:42,863 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 958.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 209.33 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 93.3 MB). Free memory was 943.5 MB in the beginning and 1.1 GB in the end (delta: -144.6 MB). Peak memory consumption was 24.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 27.79 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 18.53 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 392.13 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: 45.2 MB). Peak memory consumption was 45.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 194385.94 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 33.6 MB). Free memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: -61.4 MB). Peak memory consumption was 290.9 MB. Max. memory is 11.5 GB. * Witness Printer took 3.14 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * 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; [L106] a = __VERIFIER_nondet_uint() [L108] b = 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 TRUE partial_sum > ((unsigned char)255) [L77] partial_sum = partial_sum & ((unsigned char)255) [L78] carry = (unsigned short)1 [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: 194.3s, OverallIterations: 19, TraceHistogramMax: 5, AutomataDifference: 95.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 1289 SDtfs, 5960 SDslu, 3906 SDs, 0 SdLazy, 7895 SolverSat, 941 SolverUnsat, 12 SolverUnknown, 0 SolverNotchecked, 24.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1957 GetRequests, 1299 SyntacticMatches, 148 SemanticMatches, 510 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 14718 ImplicationChecksByTransitivity, 162.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=923occurred in iteration=16, 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, 3114 StatesRemovedByMinimization, 16 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 31.6s InterpolantComputationTime, 1390 NumberOfCodeBlocks, 1390 NumberOfCodeBlocksAsserted, 29 NumberOfCheckSat, 1810 ConstructedInterpolants, 223 QuantifiedInterpolants, 1075898 SizeOfPredicates, 55 NumberOfNonLiveVariables, 1370 ConjunctsInSsa, 137 ConjunctsInUnsatCore, 38 InterpolantComputations, 10 PerfectInterpolantSequences, 951/1314 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: OVERALL_TIME[ms]: 164, ICFG_INTERPRETER_ENTERED_PROCEDURES: 3, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 47, DAG_INTERPRETER_EARLY_EXITS: 9, TOOLS_POST_APPLICATIONS: 47, TOOLS_POST_TIME[ms]: 13, TOOLS_POST_CALL_APPLICATIONS: 0, TOOLS_POST_CALL_TIME[ms]: 0, TOOLS_POST_RETURN_APPLICATIONS: 0, TOOLS_POST_RETURN_TIME[ms]: 0, TOOLS_QUANTIFIERELIM_APPLICATIONS: 47, TOOLS_QUANTIFIERELIM_TIME[ms]: 6, TOOLS_QUANTIFIERELIM_MAX_TIME[ms]: 1, FLUID_QUERY_TIME[ms]: 3, FLUID_QUERIES: 94, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 0, DOMAIN_JOIN_TIME[ms]: 0, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME[ms]: 0, DOMAIN_WIDEN_APPLICATIONS: 0, DOMAIN_WIDEN_TIME[ms]: 0, DOMAIN_ISSUBSETEQ_APPLICATIONS: 3, DOMAIN_ISSUBSETEQ_TIME[ms]: 0, DOMAIN_ISBOTTOM_APPLICATIONS: 47, DOMAIN_ISBOTTOM_TIME[ms]: 74, LOOP_SUMMARIZER_APPLICATIONS: 3, LOOP_SUMMARIZER_CACHE_MISSES: 3, LOOP_SUMMARIZER_OVERALL_TIME[ms]: 8, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 7, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 3, CALL_SUMMARIZER_APPLICATIONS: 0, CALL_SUMMARIZER_CACHE_MISSES: 0, CALL_SUMMARIZER_OVERALL_TIME[ms]: 0, CALL_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 0, PROCEDURE_GRAPH_BUILDER_TIME[ms]: 2, PATH_EXPR_TIME[ms]: 4, REGEX_TO_DAG_TIME[ms]: 4, DAG_COMPRESSION_TIME[ms]: 35, DAG_COMPRESSION_PROCESSED_NODES: 2811, DAG_COMPRESSION_RETAINED_NODES: 262, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...