./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted/NonTermination4.c --full-output --architecture 64bit -------------------------------------------------------------------------------- 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_1ca50ece-dce0-4a79-b1e4-a38fdd71593a/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_1ca50ece-dce0-4a79-b1e4-a38fdd71593a/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_1ca50ece-dce0-4a79-b1e4-a38fdd71593a/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_1ca50ece-dce0-4a79-b1e4-a38fdd71593a/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-crafted/NonTermination4.c -s /tmp/vcloud-vcloud-master/worker/run_dir_1ca50ece-dce0-4a79-b1e4-a38fdd71593a/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_1ca50ece-dce0-4a79-b1e4-a38fdd71593a/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 94b61e96441ca10668b436b4ef10dfd9464f0863 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(OVERFLOW) --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-12-07 13:15:27,275 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 13:15:27,276 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 13:15:27,284 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 13:15:27,284 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 13:15:27,285 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 13:15:27,286 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 13:15:27,287 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 13:15:27,288 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 13:15:27,289 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 13:15:27,289 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 13:15:27,290 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 13:15:27,290 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 13:15:27,291 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 13:15:27,292 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 13:15:27,293 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 13:15:27,293 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 13:15:27,294 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 13:15:27,295 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 13:15:27,296 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 13:15:27,297 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 13:15:27,298 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 13:15:27,299 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 13:15:27,299 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 13:15:27,301 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 13:15:27,301 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 13:15:27,301 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 13:15:27,302 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 13:15:27,302 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 13:15:27,303 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 13:15:27,303 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 13:15:27,303 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 13:15:27,304 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 13:15:27,304 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 13:15:27,305 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 13:15:27,305 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 13:15:27,305 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 13:15:27,305 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 13:15:27,306 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 13:15:27,306 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 13:15:27,306 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 13:15:27,307 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_1ca50ece-dce0-4a79-b1e4-a38fdd71593a/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf [2019-12-07 13:15:27,316 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 13:15:27,317 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 13:15:27,317 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 13:15:27,317 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 13:15:27,318 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 13:15:27,318 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 13:15:27,318 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-12-07 13:15:27,318 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 13:15:27,318 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 13:15:27,318 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 13:15:27,319 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 13:15:27,319 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 13:15:27,319 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2019-12-07 13:15:27,319 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 13:15:27,319 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 13:15:27,319 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 13:15:27,320 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 13:15:27,320 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 13:15:27,320 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 13:15:27,320 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 13:15:27,320 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 13:15:27,320 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 13:15:27,320 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 13:15:27,321 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 13:15:27,321 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 13:15:27,321 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 13:15:27,321 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 13:15:27,321 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 13:15:27,321 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_1ca50ece-dce0-4a79-b1e4-a38fdd71593a/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 94b61e96441ca10668b436b4ef10dfd9464f0863 [2019-12-07 13:15:27,420 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 13:15:27,428 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 13:15:27,430 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 13:15:27,431 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 13:15:27,431 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 13:15:27,432 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_1ca50ece-dce0-4a79-b1e4-a38fdd71593a/bin/uautomizer/../../sv-benchmarks/c/termination-crafted/NonTermination4.c [2019-12-07 13:15:27,467 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1ca50ece-dce0-4a79-b1e4-a38fdd71593a/bin/uautomizer/data/169d8389a/07d86a7217114d3bb135b50ba309fa87/FLAG8761ffb29 [2019-12-07 13:15:27,886 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 13:15:27,886 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_1ca50ece-dce0-4a79-b1e4-a38fdd71593a/sv-benchmarks/c/termination-crafted/NonTermination4.c [2019-12-07 13:15:27,890 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1ca50ece-dce0-4a79-b1e4-a38fdd71593a/bin/uautomizer/data/169d8389a/07d86a7217114d3bb135b50ba309fa87/FLAG8761ffb29 [2019-12-07 13:15:27,899 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_1ca50ece-dce0-4a79-b1e4-a38fdd71593a/bin/uautomizer/data/169d8389a/07d86a7217114d3bb135b50ba309fa87 [2019-12-07 13:15:27,900 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 13:15:27,901 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 13:15:27,902 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 13:15:27,902 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 13:15:27,904 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 13:15:27,905 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 01:15:27" (1/1) ... [2019-12-07 13:15:27,906 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a9c5e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:15:27, skipping insertion in model container [2019-12-07 13:15:27,906 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 01:15:27" (1/1) ... [2019-12-07 13:15:27,911 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 13:15:27,921 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 13:15:28,015 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 13:15:28,019 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 13:15:28,062 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 13:15:28,071 INFO L208 MainTranslator]: Completed translation [2019-12-07 13:15:28,071 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:15:28 WrapperNode [2019-12-07 13:15:28,072 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 13:15:28,072 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 13:15:28,072 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 13:15:28,072 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 13:15:28,078 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:15:28" (1/1) ... [2019-12-07 13:15:28,081 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:15:28" (1/1) ... [2019-12-07 13:15:28,092 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 13:15:28,093 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 13:15:28,093 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 13:15:28,093 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 13:15:28,099 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:15:28" (1/1) ... [2019-12-07 13:15:28,099 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:15:28" (1/1) ... [2019-12-07 13:15:28,100 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:15:28" (1/1) ... [2019-12-07 13:15:28,100 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:15:28" (1/1) ... [2019-12-07 13:15:28,101 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:15:28" (1/1) ... [2019-12-07 13:15:28,104 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:15:28" (1/1) ... [2019-12-07 13:15:28,104 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:15:28" (1/1) ... [2019-12-07 13:15:28,105 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 13:15:28,105 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 13:15:28,106 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 13:15:28,106 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 13:15:28,106 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:15:28" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1ca50ece-dce0-4a79-b1e4-a38fdd71593a/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 13:15:28,146 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 13:15:28,147 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 13:15:28,241 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 13:15:28,241 INFO L287 CfgBuilder]: Removed 5 assume(true) statements. [2019-12-07 13:15:28,242 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 01:15:28 BoogieIcfgContainer [2019-12-07 13:15:28,242 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 13:15:28,242 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 13:15:28,243 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 13:15:28,245 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 13:15:28,245 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 01:15:27" (1/3) ... [2019-12-07 13:15:28,246 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43c28a1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 01:15:28, skipping insertion in model container [2019-12-07 13:15:28,246 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:15:28" (2/3) ... [2019-12-07 13:15:28,246 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43c28a1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 01:15:28, skipping insertion in model container [2019-12-07 13:15:28,246 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 01:15:28" (3/3) ... [2019-12-07 13:15:28,247 INFO L109 eAbstractionObserver]: Analyzing ICFG NonTermination4.c [2019-12-07 13:15:28,254 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 13:15:28,258 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2019-12-07 13:15:28,266 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-12-07 13:15:28,282 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 13:15:28,282 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 13:15:28,282 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 13:15:28,282 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 13:15:28,282 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 13:15:28,282 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 13:15:28,283 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 13:15:28,283 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 13:15:28,292 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2019-12-07 13:15:28,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-12-07 13:15:28,296 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:15:28,296 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-12-07 13:15:28,297 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 13:15:28,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:15:28,300 INFO L82 PathProgramCache]: Analyzing trace with hash 31073, now seen corresponding path program 1 times [2019-12-07 13:15:28,306 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 13:15:28,306 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84922197] [2019-12-07 13:15:28,307 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:15:28,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:15:28,388 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 13:15:28,388 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84922197] [2019-12-07 13:15:28,389 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 13:15:28,389 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-12-07 13:15:28,390 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809264705] [2019-12-07 13:15:28,392 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 13:15:28,393 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 13:15:28,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 13:15:28,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 13:15:28,403 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 3 states. [2019-12-07 13:15:28,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:15:28,430 INFO L93 Difference]: Finished difference Result 22 states and 25 transitions. [2019-12-07 13:15:28,431 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 13:15:28,432 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2019-12-07 13:15:28,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:15:28,438 INFO L225 Difference]: With dead ends: 22 [2019-12-07 13:15:28,438 INFO L226 Difference]: Without dead ends: 13 [2019-12-07 13:15:28,439 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 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 13:15:28,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2019-12-07 13:15:28,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2019-12-07 13:15:28,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-12-07 13:15:28,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2019-12-07 13:15:28,460 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 3 [2019-12-07 13:15:28,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:15:28,461 INFO L462 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2019-12-07 13:15:28,461 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 13:15:28,461 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2019-12-07 13:15:28,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-12-07 13:15:28,461 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:15:28,461 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-12-07 13:15:28,462 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 13:15:28,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:15:28,462 INFO L82 PathProgramCache]: Analyzing trace with hash 963307, now seen corresponding path program 1 times [2019-12-07 13:15:28,462 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 13:15:28,462 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689666629] [2019-12-07 13:15:28,462 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:15:28,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:15:28,480 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 13:15:28,480 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689666629] [2019-12-07 13:15:28,481 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 13:15:28,481 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-12-07 13:15:28,481 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328158068] [2019-12-07 13:15:28,482 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 13:15:28,482 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 13:15:28,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 13:15:28,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 13:15:28,483 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 3 states. [2019-12-07 13:15:28,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:15:28,491 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2019-12-07 13:15:28,492 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 13:15:28,492 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2019-12-07 13:15:28,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:15:28,493 INFO L225 Difference]: With dead ends: 12 [2019-12-07 13:15:28,493 INFO L226 Difference]: Without dead ends: 11 [2019-12-07 13:15:28,494 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 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 13:15:28,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2019-12-07 13:15:28,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2019-12-07 13:15:28,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2019-12-07 13:15:28,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2019-12-07 13:15:28,496 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 4 [2019-12-07 13:15:28,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:15:28,496 INFO L462 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2019-12-07 13:15:28,497 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 13:15:28,497 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2019-12-07 13:15:28,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-12-07 13:15:28,497 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:15:28,497 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-12-07 13:15:28,497 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 13:15:28,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:15:28,497 INFO L82 PathProgramCache]: Analyzing trace with hash 29862563, now seen corresponding path program 1 times [2019-12-07 13:15:28,498 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 13:15:28,498 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137414991] [2019-12-07 13:15:28,498 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:15:28,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:15:28,513 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 13:15:28,513 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137414991] [2019-12-07 13:15:28,513 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 13:15:28,514 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-12-07 13:15:28,514 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130795708] [2019-12-07 13:15:28,514 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 13:15:28,514 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 13:15:28,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 13:15:28,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 13:15:28,515 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 3 states. [2019-12-07 13:15:28,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:15:28,525 INFO L93 Difference]: Finished difference Result 15 states and 16 transitions. [2019-12-07 13:15:28,526 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 13:15:28,526 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2019-12-07 13:15:28,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:15:28,526 INFO L225 Difference]: With dead ends: 15 [2019-12-07 13:15:28,526 INFO L226 Difference]: Without dead ends: 14 [2019-12-07 13:15:28,527 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 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 13:15:28,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2019-12-07 13:15:28,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2019-12-07 13:15:28,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-12-07 13:15:28,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2019-12-07 13:15:28,529 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 5 [2019-12-07 13:15:28,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:15:28,529 INFO L462 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2019-12-07 13:15:28,529 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 13:15:28,529 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2019-12-07 13:15:28,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-12-07 13:15:28,530 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:15:28,530 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-12-07 13:15:28,530 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 13:15:28,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:15:28,530 INFO L82 PathProgramCache]: Analyzing trace with hash 925739501, now seen corresponding path program 1 times [2019-12-07 13:15:28,530 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 13:15:28,531 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997088774] [2019-12-07 13:15:28,531 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:15:28,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:15:28,547 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 13:15:28,548 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997088774] [2019-12-07 13:15:28,548 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 13:15:28,548 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-12-07 13:15:28,548 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557019459] [2019-12-07 13:15:28,549 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 13:15:28,549 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 13:15:28,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 13:15:28,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 13:15:28,549 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 3 states. [2019-12-07 13:15:28,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:15:28,557 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2019-12-07 13:15:28,558 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 13:15:28,558 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2019-12-07 13:15:28,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:15:28,558 INFO L225 Difference]: With dead ends: 13 [2019-12-07 13:15:28,558 INFO L226 Difference]: Without dead ends: 12 [2019-12-07 13:15:28,559 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 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 13:15:28,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2019-12-07 13:15:28,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2019-12-07 13:15:28,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-12-07 13:15:28,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2019-12-07 13:15:28,561 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 6 [2019-12-07 13:15:28,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:15:28,561 INFO L462 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2019-12-07 13:15:28,561 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 13:15:28,562 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2019-12-07 13:15:28,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-12-07 13:15:28,562 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:15:28,562 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2019-12-07 13:15:28,562 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 13:15:28,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:15:28,562 INFO L82 PathProgramCache]: Analyzing trace with hash 577431471, now seen corresponding path program 1 times [2019-12-07 13:15:28,562 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 13:15:28,563 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81272791] [2019-12-07 13:15:28,563 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:15:28,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:15:28,586 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:15:28,586 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81272791] [2019-12-07 13:15:28,586 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [198493307] [2019-12-07 13:15:28,587 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1ca50ece-dce0-4a79-b1e4-a38fdd71593a/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 13:15:28,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:15:28,608 INFO L264 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 3 conjunts are in the unsatisfiable core [2019-12-07 13:15:28,611 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 13:15:28,633 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:15:28,634 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 13:15:28,634 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 2 [2019-12-07 13:15:28,634 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367466888] [2019-12-07 13:15:28,634 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 13:15:28,634 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 13:15:28,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 13:15:28,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 13:15:28,635 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 4 states. [2019-12-07 13:15:28,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:15:28,651 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2019-12-07 13:15:28,651 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 13:15:28,651 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2019-12-07 13:15:28,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:15:28,652 INFO L225 Difference]: With dead ends: 17 [2019-12-07 13:15:28,652 INFO L226 Difference]: Without dead ends: 16 [2019-12-07 13:15:28,652 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 13:15:28,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-12-07 13:15:28,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2019-12-07 13:15:28,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-12-07 13:15:28,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2019-12-07 13:15:28,654 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 8 [2019-12-07 13:15:28,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:15:28,655 INFO L462 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2019-12-07 13:15:28,655 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 13:15:28,655 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2019-12-07 13:15:28,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-07 13:15:28,655 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:15:28,655 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1] [2019-12-07 13:15:28,856 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 13:15:28,857 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 13:15:28,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:15:28,858 INFO L82 PathProgramCache]: Analyzing trace with hash 860863857, now seen corresponding path program 1 times [2019-12-07 13:15:28,858 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 13:15:28,859 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218803443] [2019-12-07 13:15:28,859 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:15:28,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:15:28,942 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:15:28,943 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218803443] [2019-12-07 13:15:28,943 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [41740599] [2019-12-07 13:15:28,943 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1ca50ece-dce0-4a79-b1e4-a38fdd71593a/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 13:15:28,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:15:28,968 INFO L264 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 3 conjunts are in the unsatisfiable core [2019-12-07 13:15:28,969 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 13:15:28,977 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:15:28,977 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 13:15:28,977 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 2 [2019-12-07 13:15:28,977 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899985759] [2019-12-07 13:15:28,977 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 13:15:28,978 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 13:15:28,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 13:15:28,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 13:15:28,978 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 4 states. [2019-12-07 13:15:28,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:15:28,989 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2019-12-07 13:15:28,990 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 13:15:28,990 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2019-12-07 13:15:28,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:15:28,990 INFO L225 Difference]: With dead ends: 19 [2019-12-07 13:15:28,991 INFO L226 Difference]: Without dead ends: 18 [2019-12-07 13:15:28,991 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 13:15:28,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-12-07 13:15:28,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2019-12-07 13:15:28,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-12-07 13:15:28,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2019-12-07 13:15:28,994 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 10 [2019-12-07 13:15:28,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:15:28,994 INFO L462 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2019-12-07 13:15:28,994 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 13:15:28,994 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2019-12-07 13:15:28,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-12-07 13:15:28,994 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:15:28,994 INFO L410 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1] [2019-12-07 13:15:29,195 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 13:15:29,196 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 13:15:29,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:15:29,197 INFO L82 PathProgramCache]: Analyzing trace with hash 745486881, now seen corresponding path program 2 times [2019-12-07 13:15:29,197 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 13:15:29,198 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409578613] [2019-12-07 13:15:29,198 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:15:29,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:15:29,281 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:15:29,281 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409578613] [2019-12-07 13:15:29,281 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [184313612] [2019-12-07 13:15:29,282 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1ca50ece-dce0-4a79-b1e4-a38fdd71593a/bin/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 13:15:29,300 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-12-07 13:15:29,301 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 13:15:29,301 INFO L264 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 13:15:29,302 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 13:15:29,314 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:15:29,314 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 13:15:29,315 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2019-12-07 13:15:29,315 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34484467] [2019-12-07 13:15:29,315 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 13:15:29,315 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 13:15:29,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 13:15:29,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-12-07 13:15:29,316 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 5 states. [2019-12-07 13:15:29,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:15:29,332 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2019-12-07 13:15:29,332 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 13:15:29,332 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2019-12-07 13:15:29,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:15:29,333 INFO L225 Difference]: With dead ends: 22 [2019-12-07 13:15:29,333 INFO L226 Difference]: Without dead ends: 21 [2019-12-07 13:15:29,333 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-12-07 13:15:29,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-12-07 13:15:29,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2019-12-07 13:15:29,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-12-07 13:15:29,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2019-12-07 13:15:29,336 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 13 [2019-12-07 13:15:29,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:15:29,336 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2019-12-07 13:15:29,336 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 13:15:29,336 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2019-12-07 13:15:29,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-12-07 13:15:29,337 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:15:29,337 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1] [2019-12-07 13:15:29,537 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 13:15:29,538 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 13:15:29,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:15:29,539 INFO L82 PathProgramCache]: Analyzing trace with hash -846644381, now seen corresponding path program 2 times [2019-12-07 13:15:29,540 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 13:15:29,540 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24272221] [2019-12-07 13:15:29,541 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:15:29,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:15:29,636 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:15:29,636 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24272221] [2019-12-07 13:15:29,637 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2132562562] [2019-12-07 13:15:29,638 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1ca50ece-dce0-4a79-b1e4-a38fdd71593a/bin/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 13:15:29,681 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-12-07 13:15:29,681 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 13:15:29,682 INFO L264 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 13:15:29,683 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 13:15:29,699 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:15:29,699 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 13:15:29,700 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2019-12-07 13:15:29,700 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146971074] [2019-12-07 13:15:29,700 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 13:15:29,701 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 13:15:29,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 13:15:29,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-12-07 13:15:29,701 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 5 states. [2019-12-07 13:15:29,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:15:29,718 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2019-12-07 13:15:29,718 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 13:15:29,718 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2019-12-07 13:15:29,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:15:29,719 INFO L225 Difference]: With dead ends: 24 [2019-12-07 13:15:29,719 INFO L226 Difference]: Without dead ends: 23 [2019-12-07 13:15:29,719 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-12-07 13:15:29,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-12-07 13:15:29,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2019-12-07 13:15:29,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-12-07 13:15:29,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2019-12-07 13:15:29,722 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 15 [2019-12-07 13:15:29,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:15:29,722 INFO L462 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2019-12-07 13:15:29,722 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 13:15:29,722 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2019-12-07 13:15:29,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-12-07 13:15:29,723 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:15:29,723 INFO L410 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 1, 1] [2019-12-07 13:15:29,923 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 13:15:29,924 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 13:15:29,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:15:29,926 INFO L82 PathProgramCache]: Analyzing trace with hash 1960222447, now seen corresponding path program 3 times [2019-12-07 13:15:29,926 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 13:15:29,927 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958851305] [2019-12-07 13:15:29,928 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:15:29,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:15:29,978 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:15:29,978 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958851305] [2019-12-07 13:15:29,978 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1190104976] [2019-12-07 13:15:29,978 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1ca50ece-dce0-4a79-b1e4-a38fdd71593a/bin/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 13:15:29,996 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-12-07 13:15:29,996 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 13:15:29,996 INFO L264 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-07 13:15:29,997 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 13:15:30,012 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:15:30,012 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 13:15:30,013 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2019-12-07 13:15:30,013 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812734771] [2019-12-07 13:15:30,013 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-07 13:15:30,013 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 13:15:30,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-07 13:15:30,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-12-07 13:15:30,014 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 6 states. [2019-12-07 13:15:30,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:15:30,031 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2019-12-07 13:15:30,031 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 13:15:30,031 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2019-12-07 13:15:30,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:15:30,031 INFO L225 Difference]: With dead ends: 27 [2019-12-07 13:15:30,031 INFO L226 Difference]: Without dead ends: 26 [2019-12-07 13:15:30,032 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-12-07 13:15:30,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-12-07 13:15:30,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2019-12-07 13:15:30,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-12-07 13:15:30,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2019-12-07 13:15:30,035 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 18 [2019-12-07 13:15:30,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:15:30,035 INFO L462 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2019-12-07 13:15:30,035 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-07 13:15:30,035 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2019-12-07 13:15:30,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-12-07 13:15:30,035 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:15:30,035 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 1, 1] [2019-12-07 13:15:30,236 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 13:15:30,237 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 13:15:30,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:15:30,238 INFO L82 PathProgramCache]: Analyzing trace with hash -1716869967, now seen corresponding path program 3 times [2019-12-07 13:15:30,238 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 13:15:30,239 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128809850] [2019-12-07 13:15:30,239 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:15:30,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:15:30,334 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:15:30,334 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128809850] [2019-12-07 13:15:30,335 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [156060113] [2019-12-07 13:15:30,335 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1ca50ece-dce0-4a79-b1e4-a38fdd71593a/bin/uautomizer/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 13:15:30,361 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-12-07 13:15:30,361 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 13:15:30,361 INFO L264 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-07 13:15:30,362 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 13:15:30,376 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:15:30,376 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 13:15:30,376 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2019-12-07 13:15:30,376 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405824226] [2019-12-07 13:15:30,376 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-07 13:15:30,376 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 13:15:30,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-07 13:15:30,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-12-07 13:15:30,377 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand 6 states. [2019-12-07 13:15:30,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:15:30,396 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2019-12-07 13:15:30,396 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 13:15:30,396 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2019-12-07 13:15:30,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:15:30,397 INFO L225 Difference]: With dead ends: 29 [2019-12-07 13:15:30,397 INFO L226 Difference]: Without dead ends: 28 [2019-12-07 13:15:30,398 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-12-07 13:15:30,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-12-07 13:15:30,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2019-12-07 13:15:30,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-12-07 13:15:30,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2019-12-07 13:15:30,402 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 20 [2019-12-07 13:15:30,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:15:30,402 INFO L462 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2019-12-07 13:15:30,402 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-07 13:15:30,402 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2019-12-07 13:15:30,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-12-07 13:15:30,403 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:15:30,403 INFO L410 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 1, 1] [2019-12-07 13:15:30,603 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 13:15:30,604 INFO L410 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 13:15:30,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:15:30,604 INFO L82 PathProgramCache]: Analyzing trace with hash 1492388577, now seen corresponding path program 4 times [2019-12-07 13:15:30,604 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 13:15:30,604 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437506685] [2019-12-07 13:15:30,604 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:15:30,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:15:30,638 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:15:30,639 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437506685] [2019-12-07 13:15:30,639 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [454929105] [2019-12-07 13:15:30,639 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1ca50ece-dce0-4a79-b1e4-a38fdd71593a/bin/uautomizer/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 13:15:30,657 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-12-07 13:15:30,657 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 13:15:30,657 INFO L264 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 6 conjunts are in the unsatisfiable core [2019-12-07 13:15:30,658 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 13:15:30,679 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:15:30,679 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 13:15:30,679 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2019-12-07 13:15:30,679 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805778112] [2019-12-07 13:15:30,680 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-12-07 13:15:30,680 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 13:15:30,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-12-07 13:15:30,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-12-07 13:15:30,680 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 7 states. [2019-12-07 13:15:30,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:15:30,701 INFO L93 Difference]: Finished difference Result 32 states and 32 transitions. [2019-12-07 13:15:30,701 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-12-07 13:15:30,701 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2019-12-07 13:15:30,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:15:30,702 INFO L225 Difference]: With dead ends: 32 [2019-12-07 13:15:30,702 INFO L226 Difference]: Without dead ends: 31 [2019-12-07 13:15:30,702 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 4 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-12-07 13:15:30,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2019-12-07 13:15:30,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2019-12-07 13:15:30,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-12-07 13:15:30,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 30 transitions. [2019-12-07 13:15:30,705 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 30 transitions. Word has length 23 [2019-12-07 13:15:30,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:15:30,705 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 30 transitions. [2019-12-07 13:15:30,706 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-12-07 13:15:30,706 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 30 transitions. [2019-12-07 13:15:30,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-12-07 13:15:30,706 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:15:30,706 INFO L410 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 1, 1] [2019-12-07 13:15:30,907 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 13:15:30,908 INFO L410 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 13:15:30,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:15:30,909 INFO L82 PathProgramCache]: Analyzing trace with hash -333652957, now seen corresponding path program 4 times [2019-12-07 13:15:30,909 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 13:15:30,910 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285208262] [2019-12-07 13:15:30,910 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:15:30,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:15:30,944 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:15:30,944 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285208262] [2019-12-07 13:15:30,944 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [472345996] [2019-12-07 13:15:30,944 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1ca50ece-dce0-4a79-b1e4-a38fdd71593a/bin/uautomizer/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 13:15:30,962 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-12-07 13:15:30,962 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 13:15:30,962 INFO L264 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 6 conjunts are in the unsatisfiable core [2019-12-07 13:15:30,963 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 13:15:30,986 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:15:30,986 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 13:15:30,986 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2019-12-07 13:15:30,986 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883646834] [2019-12-07 13:15:30,987 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-12-07 13:15:30,987 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 13:15:30,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-12-07 13:15:30,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-12-07 13:15:30,987 INFO L87 Difference]: Start difference. First operand 30 states and 30 transitions. Second operand 7 states. [2019-12-07 13:15:31,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:15:31,003 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions. [2019-12-07 13:15:31,004 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-12-07 13:15:31,004 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 25 [2019-12-07 13:15:31,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:15:31,004 INFO L225 Difference]: With dead ends: 34 [2019-12-07 13:15:31,004 INFO L226 Difference]: Without dead ends: 33 [2019-12-07 13:15:31,005 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 4 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-12-07 13:15:31,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2019-12-07 13:15:31,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 32. [2019-12-07 13:15:31,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2019-12-07 13:15:31,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2019-12-07 13:15:31,008 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 25 [2019-12-07 13:15:31,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:15:31,008 INFO L462 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions. [2019-12-07 13:15:31,008 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-12-07 13:15:31,008 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2019-12-07 13:15:31,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-12-07 13:15:31,009 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:15:31,009 INFO L410 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 1, 1] [2019-12-07 13:15:31,209 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 13:15:31,210 INFO L410 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 13:15:31,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:15:31,211 INFO L82 PathProgramCache]: Analyzing trace with hash -1300871633, now seen corresponding path program 5 times [2019-12-07 13:15:31,212 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 13:15:31,212 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825874951] [2019-12-07 13:15:31,213 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:15:31,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:15:31,284 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:15:31,284 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825874951] [2019-12-07 13:15:31,284 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1116176153] [2019-12-07 13:15:31,285 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1ca50ece-dce0-4a79-b1e4-a38fdd71593a/bin/uautomizer/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 13:15:31,304 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2019-12-07 13:15:31,304 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 13:15:31,304 INFO L264 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 7 conjunts are in the unsatisfiable core [2019-12-07 13:15:31,305 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 13:15:31,337 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:15:31,337 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 13:15:31,337 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2019-12-07 13:15:31,337 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727575088] [2019-12-07 13:15:31,338 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-12-07 13:15:31,338 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 13:15:31,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-12-07 13:15:31,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2019-12-07 13:15:31,338 INFO L87 Difference]: Start difference. First operand 32 states and 32 transitions. Second operand 8 states. [2019-12-07 13:15:31,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:15:31,364 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions. [2019-12-07 13:15:31,364 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-12-07 13:15:31,364 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 28 [2019-12-07 13:15:31,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:15:31,364 INFO L225 Difference]: With dead ends: 37 [2019-12-07 13:15:31,365 INFO L226 Difference]: Without dead ends: 36 [2019-12-07 13:15:31,365 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 22 SyntacticMatches, 5 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2019-12-07 13:15:31,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-12-07 13:15:31,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2019-12-07 13:15:31,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2019-12-07 13:15:31,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2019-12-07 13:15:31,368 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 28 [2019-12-07 13:15:31,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:15:31,368 INFO L462 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2019-12-07 13:15:31,368 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-12-07 13:15:31,368 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2019-12-07 13:15:31,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-12-07 13:15:31,369 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:15:31,369 INFO L410 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 1, 1] [2019-12-07 13:15:31,569 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 13:15:31,570 INFO L410 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 13:15:31,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:15:31,571 INFO L82 PathProgramCache]: Analyzing trace with hash -302154767, now seen corresponding path program 5 times [2019-12-07 13:15:31,572 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 13:15:31,572 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546115520] [2019-12-07 13:15:31,573 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:15:31,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:15:31,646 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:15:31,647 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546115520] [2019-12-07 13:15:31,647 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1690775052] [2019-12-07 13:15:31,647 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1ca50ece-dce0-4a79-b1e4-a38fdd71593a/bin/uautomizer/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 13:15:31,665 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2019-12-07 13:15:31,665 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 13:15:31,666 INFO L264 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 7 conjunts are in the unsatisfiable core [2019-12-07 13:15:31,667 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 13:15:31,691 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:15:31,691 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 13:15:31,691 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2019-12-07 13:15:31,692 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421243520] [2019-12-07 13:15:31,692 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-12-07 13:15:31,692 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 13:15:31,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-12-07 13:15:31,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2019-12-07 13:15:31,692 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand 8 states. [2019-12-07 13:15:31,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:15:31,712 INFO L93 Difference]: Finished difference Result 39 states and 39 transitions. [2019-12-07 13:15:31,712 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-12-07 13:15:31,712 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 30 [2019-12-07 13:15:31,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:15:31,712 INFO L225 Difference]: With dead ends: 39 [2019-12-07 13:15:31,712 INFO L226 Difference]: Without dead ends: 38 [2019-12-07 13:15:31,713 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 5 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2019-12-07 13:15:31,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2019-12-07 13:15:31,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2019-12-07 13:15:31,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-12-07 13:15:31,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 37 transitions. [2019-12-07 13:15:31,716 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 37 transitions. Word has length 30 [2019-12-07 13:15:31,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:15:31,716 INFO L462 AbstractCegarLoop]: Abstraction has 37 states and 37 transitions. [2019-12-07 13:15:31,716 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-12-07 13:15:31,716 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 37 transitions. [2019-12-07 13:15:31,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2019-12-07 13:15:31,717 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:15:31,717 INFO L410 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 1, 1] [2019-12-07 13:15:31,918 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 13:15:31,919 INFO L410 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 13:15:31,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:15:31,920 INFO L82 PathProgramCache]: Analyzing trace with hash 758836129, now seen corresponding path program 6 times [2019-12-07 13:15:31,920 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 13:15:31,921 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702592657] [2019-12-07 13:15:31,921 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:15:31,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:15:32,003 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:15:32,004 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702592657] [2019-12-07 13:15:32,004 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [11543804] [2019-12-07 13:15:32,004 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1ca50ece-dce0-4a79-b1e4-a38fdd71593a/bin/uautomizer/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 13:15:32,023 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2019-12-07 13:15:32,023 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 13:15:32,023 INFO L264 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 8 conjunts are in the unsatisfiable core [2019-12-07 13:15:32,024 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 13:15:32,065 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:15:32,065 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 13:15:32,065 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2019-12-07 13:15:32,065 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823009930] [2019-12-07 13:15:32,065 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-12-07 13:15:32,065 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 13:15:32,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-12-07 13:15:32,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2019-12-07 13:15:32,066 INFO L87 Difference]: Start difference. First operand 37 states and 37 transitions. Second operand 9 states. [2019-12-07 13:15:32,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:15:32,089 INFO L93 Difference]: Finished difference Result 42 states and 42 transitions. [2019-12-07 13:15:32,089 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-12-07 13:15:32,089 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 33 [2019-12-07 13:15:32,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:15:32,089 INFO L225 Difference]: With dead ends: 42 [2019-12-07 13:15:32,089 INFO L226 Difference]: Without dead ends: 41 [2019-12-07 13:15:32,090 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 26 SyntacticMatches, 6 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2019-12-07 13:15:32,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2019-12-07 13:15:32,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 40. [2019-12-07 13:15:32,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-12-07 13:15:32,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 40 transitions. [2019-12-07 13:15:32,093 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 40 transitions. Word has length 33 [2019-12-07 13:15:32,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:15:32,093 INFO L462 AbstractCegarLoop]: Abstraction has 40 states and 40 transitions. [2019-12-07 13:15:32,093 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-12-07 13:15:32,093 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 40 transitions. [2019-12-07 13:15:32,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2019-12-07 13:15:32,094 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:15:32,094 INFO L410 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 1, 1] [2019-12-07 13:15:32,294 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 13:15:32,295 INFO L410 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 13:15:32,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:15:32,295 INFO L82 PathProgramCache]: Analyzing trace with hash -902918941, now seen corresponding path program 6 times [2019-12-07 13:15:32,295 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 13:15:32,295 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011199020] [2019-12-07 13:15:32,295 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:15:32,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:15:32,337 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:15:32,337 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011199020] [2019-12-07 13:15:32,337 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1023905895] [2019-12-07 13:15:32,337 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1ca50ece-dce0-4a79-b1e4-a38fdd71593a/bin/uautomizer/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 13:15:32,359 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2019-12-07 13:15:32,359 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 13:15:32,359 INFO L264 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 8 conjunts are in the unsatisfiable core [2019-12-07 13:15:32,361 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 13:15:32,393 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:15:32,393 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 13:15:32,393 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2019-12-07 13:15:32,393 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244492999] [2019-12-07 13:15:32,394 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-12-07 13:15:32,394 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 13:15:32,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-12-07 13:15:32,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2019-12-07 13:15:32,394 INFO L87 Difference]: Start difference. First operand 40 states and 40 transitions. Second operand 9 states. [2019-12-07 13:15:32,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:15:32,420 INFO L93 Difference]: Finished difference Result 44 states and 44 transitions. [2019-12-07 13:15:32,420 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-12-07 13:15:32,420 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 35 [2019-12-07 13:15:32,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:15:32,421 INFO L225 Difference]: With dead ends: 44 [2019-12-07 13:15:32,421 INFO L226 Difference]: Without dead ends: 43 [2019-12-07 13:15:32,421 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 28 SyntacticMatches, 6 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2019-12-07 13:15:32,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2019-12-07 13:15:32,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 42. [2019-12-07 13:15:32,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2019-12-07 13:15:32,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 42 transitions. [2019-12-07 13:15:32,424 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 42 transitions. Word has length 35 [2019-12-07 13:15:32,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:15:32,424 INFO L462 AbstractCegarLoop]: Abstraction has 42 states and 42 transitions. [2019-12-07 13:15:32,424 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-12-07 13:15:32,424 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 42 transitions. [2019-12-07 13:15:32,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-12-07 13:15:32,425 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:15:32,425 INFO L410 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 1, 1] [2019-12-07 13:15:32,625 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 13:15:32,626 INFO L410 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 13:15:32,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:15:32,627 INFO L82 PathProgramCache]: Analyzing trace with hash 522050927, now seen corresponding path program 7 times [2019-12-07 13:15:32,627 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 13:15:32,628 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105143878] [2019-12-07 13:15:32,628 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:15:32,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:15:32,712 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:15:32,712 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105143878] [2019-12-07 13:15:32,712 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2115237467] [2019-12-07 13:15:32,712 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1ca50ece-dce0-4a79-b1e4-a38fdd71593a/bin/uautomizer/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 13:15:32,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:15:32,738 INFO L264 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2019-12-07 13:15:32,739 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 13:15:32,788 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:15:32,788 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 13:15:32,788 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2019-12-07 13:15:32,788 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529421248] [2019-12-07 13:15:32,789 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-12-07 13:15:32,789 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 13:15:32,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-12-07 13:15:32,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2019-12-07 13:15:32,789 INFO L87 Difference]: Start difference. First operand 42 states and 42 transitions. Second operand 10 states. [2019-12-07 13:15:32,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:15:32,822 INFO L93 Difference]: Finished difference Result 47 states and 47 transitions. [2019-12-07 13:15:32,823 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-12-07 13:15:32,823 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 38 [2019-12-07 13:15:32,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:15:32,823 INFO L225 Difference]: With dead ends: 47 [2019-12-07 13:15:32,823 INFO L226 Difference]: Without dead ends: 46 [2019-12-07 13:15:32,824 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 30 SyntacticMatches, 7 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2019-12-07 13:15:32,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2019-12-07 13:15:32,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2019-12-07 13:15:32,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2019-12-07 13:15:32,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 45 transitions. [2019-12-07 13:15:32,828 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 45 transitions. Word has length 38 [2019-12-07 13:15:32,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:15:32,828 INFO L462 AbstractCegarLoop]: Abstraction has 45 states and 45 transitions. [2019-12-07 13:15:32,828 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-12-07 13:15:32,828 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 45 transitions. [2019-12-07 13:15:32,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2019-12-07 13:15:32,829 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:15:32,829 INFO L410 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 1, 1] [2019-12-07 13:15:33,029 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 13:15:33,030 INFO L410 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 13:15:33,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:15:33,031 INFO L82 PathProgramCache]: Analyzing trace with hash -820231375, now seen corresponding path program 7 times [2019-12-07 13:15:33,031 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 13:15:33,032 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840663998] [2019-12-07 13:15:33,032 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:15:33,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:15:33,083 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 133 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:15:33,083 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840663998] [2019-12-07 13:15:33,083 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1807883867] [2019-12-07 13:15:33,083 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1ca50ece-dce0-4a79-b1e4-a38fdd71593a/bin/uautomizer/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 13:15:33,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:15:33,102 INFO L264 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 9 conjunts are in the unsatisfiable core [2019-12-07 13:15:33,103 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 13:15:33,141 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 133 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:15:33,141 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 13:15:33,141 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2019-12-07 13:15:33,141 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338068522] [2019-12-07 13:15:33,142 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-12-07 13:15:33,142 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 13:15:33,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-12-07 13:15:33,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2019-12-07 13:15:33,142 INFO L87 Difference]: Start difference. First operand 45 states and 45 transitions. Second operand 10 states. [2019-12-07 13:15:33,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:15:33,161 INFO L93 Difference]: Finished difference Result 49 states and 49 transitions. [2019-12-07 13:15:33,161 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-12-07 13:15:33,162 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 40 [2019-12-07 13:15:33,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:15:33,162 INFO L225 Difference]: With dead ends: 49 [2019-12-07 13:15:33,162 INFO L226 Difference]: Without dead ends: 48 [2019-12-07 13:15:33,162 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 32 SyntacticMatches, 7 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2019-12-07 13:15:33,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2019-12-07 13:15:33,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2019-12-07 13:15:33,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2019-12-07 13:15:33,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 47 transitions. [2019-12-07 13:15:33,166 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 47 transitions. Word has length 40 [2019-12-07 13:15:33,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:15:33,166 INFO L462 AbstractCegarLoop]: Abstraction has 47 states and 47 transitions. [2019-12-07 13:15:33,166 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-12-07 13:15:33,166 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 47 transitions. [2019-12-07 13:15:33,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2019-12-07 13:15:33,167 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:15:33,167 INFO L410 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 8, 1, 1] [2019-12-07 13:15:33,367 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 13:15:33,368 INFO L410 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 13:15:33,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:15:33,368 INFO L82 PathProgramCache]: Analyzing trace with hash -1443898271, now seen corresponding path program 8 times [2019-12-07 13:15:33,368 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 13:15:33,368 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701946746] [2019-12-07 13:15:33,368 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:15:33,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:15:33,422 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:15:33,422 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701946746] [2019-12-07 13:15:33,422 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [335897854] [2019-12-07 13:15:33,422 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1ca50ece-dce0-4a79-b1e4-a38fdd71593a/bin/uautomizer/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 13:15:33,441 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-12-07 13:15:33,441 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 13:15:33,441 INFO L264 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 10 conjunts are in the unsatisfiable core [2019-12-07 13:15:33,442 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 13:15:33,487 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:15:33,488 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 13:15:33,488 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2019-12-07 13:15:33,488 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773718801] [2019-12-07 13:15:33,488 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-12-07 13:15:33,488 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 13:15:33,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-12-07 13:15:33,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2019-12-07 13:15:33,489 INFO L87 Difference]: Start difference. First operand 47 states and 47 transitions. Second operand 11 states. [2019-12-07 13:15:33,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:15:33,517 INFO L93 Difference]: Finished difference Result 52 states and 52 transitions. [2019-12-07 13:15:33,517 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-12-07 13:15:33,517 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 43 [2019-12-07 13:15:33,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:15:33,518 INFO L225 Difference]: With dead ends: 52 [2019-12-07 13:15:33,518 INFO L226 Difference]: Without dead ends: 51 [2019-12-07 13:15:33,518 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 34 SyntacticMatches, 8 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2019-12-07 13:15:33,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2019-12-07 13:15:33,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 50. [2019-12-07 13:15:33,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2019-12-07 13:15:33,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 50 transitions. [2019-12-07 13:15:33,522 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 50 transitions. Word has length 43 [2019-12-07 13:15:33,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:15:33,522 INFO L462 AbstractCegarLoop]: Abstraction has 50 states and 50 transitions. [2019-12-07 13:15:33,522 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-12-07 13:15:33,523 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 50 transitions. [2019-12-07 13:15:33,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2019-12-07 13:15:33,523 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:15:33,523 INFO L410 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 1, 1] [2019-12-07 13:15:33,724 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 13:15:33,724 INFO L410 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 13:15:33,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:15:33,725 INFO L82 PathProgramCache]: Analyzing trace with hash -311800413, now seen corresponding path program 8 times [2019-12-07 13:15:33,725 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 13:15:33,726 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959414201] [2019-12-07 13:15:33,726 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:15:33,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:15:33,810 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 172 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:15:33,810 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959414201] [2019-12-07 13:15:33,810 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2001178603] [2019-12-07 13:15:33,810 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1ca50ece-dce0-4a79-b1e4-a38fdd71593a/bin/uautomizer/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 13:15:33,833 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-12-07 13:15:33,833 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 13:15:33,834 INFO L264 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 10 conjunts are in the unsatisfiable core [2019-12-07 13:15:33,835 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 13:15:33,881 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 172 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:15:33,881 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 13:15:33,882 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2019-12-07 13:15:33,882 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327196976] [2019-12-07 13:15:33,882 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-12-07 13:15:33,882 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 13:15:33,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-12-07 13:15:33,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2019-12-07 13:15:33,882 INFO L87 Difference]: Start difference. First operand 50 states and 50 transitions. Second operand 11 states. [2019-12-07 13:15:33,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:15:33,904 INFO L93 Difference]: Finished difference Result 54 states and 54 transitions. [2019-12-07 13:15:33,904 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-12-07 13:15:33,905 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 45 [2019-12-07 13:15:33,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:15:33,905 INFO L225 Difference]: With dead ends: 54 [2019-12-07 13:15:33,905 INFO L226 Difference]: Without dead ends: 53 [2019-12-07 13:15:33,905 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 36 SyntacticMatches, 8 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2019-12-07 13:15:33,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2019-12-07 13:15:33,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 52. [2019-12-07 13:15:33,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2019-12-07 13:15:33,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 52 transitions. [2019-12-07 13:15:33,908 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 52 transitions. Word has length 45 [2019-12-07 13:15:33,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:15:33,908 INFO L462 AbstractCegarLoop]: Abstraction has 52 states and 52 transitions. [2019-12-07 13:15:33,908 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-12-07 13:15:33,908 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 52 transitions. [2019-12-07 13:15:33,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2019-12-07 13:15:33,908 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:15:33,908 INFO L410 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 9, 1, 1] [2019-12-07 13:15:34,109 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 13:15:34,109 INFO L410 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 13:15:34,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:15:34,110 INFO L82 PathProgramCache]: Analyzing trace with hash 1168204975, now seen corresponding path program 9 times [2019-12-07 13:15:34,110 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 13:15:34,111 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611649802] [2019-12-07 13:15:34,111 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:15:34,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:15:34,182 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 198 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:15:34,182 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611649802] [2019-12-07 13:15:34,183 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [87378685] [2019-12-07 13:15:34,183 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1ca50ece-dce0-4a79-b1e4-a38fdd71593a/bin/uautomizer/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 13:15:34,204 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2019-12-07 13:15:34,204 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 13:15:34,205 INFO L264 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 11 conjunts are in the unsatisfiable core [2019-12-07 13:15:34,206 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 13:15:34,267 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 198 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:15:34,267 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 13:15:34,267 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2019-12-07 13:15:34,267 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528351603] [2019-12-07 13:15:34,268 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-12-07 13:15:34,268 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 13:15:34,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-12-07 13:15:34,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2019-12-07 13:15:34,268 INFO L87 Difference]: Start difference. First operand 52 states and 52 transitions. Second operand 12 states. [2019-12-07 13:15:34,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:15:34,297 INFO L93 Difference]: Finished difference Result 57 states and 57 transitions. [2019-12-07 13:15:34,297 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-12-07 13:15:34,297 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 48 [2019-12-07 13:15:34,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:15:34,298 INFO L225 Difference]: With dead ends: 57 [2019-12-07 13:15:34,298 INFO L226 Difference]: Without dead ends: 56 [2019-12-07 13:15:34,298 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 38 SyntacticMatches, 9 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2019-12-07 13:15:34,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2019-12-07 13:15:34,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 55. [2019-12-07 13:15:34,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2019-12-07 13:15:34,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 55 transitions. [2019-12-07 13:15:34,300 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 55 transitions. Word has length 48 [2019-12-07 13:15:34,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:15:34,301 INFO L462 AbstractCegarLoop]: Abstraction has 55 states and 55 transitions. [2019-12-07 13:15:34,301 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-12-07 13:15:34,301 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 55 transitions. [2019-12-07 13:15:34,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2019-12-07 13:15:34,301 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:15:34,301 INFO L410 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 1, 1] [2019-12-07 13:15:34,501 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 13:15:34,502 INFO L410 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 13:15:34,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:15:34,503 INFO L82 PathProgramCache]: Analyzing trace with hash 1658518129, now seen corresponding path program 9 times [2019-12-07 13:15:34,503 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 13:15:34,503 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394151648] [2019-12-07 13:15:34,504 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:15:34,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:15:34,598 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 0 proven. 216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:15:34,598 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394151648] [2019-12-07 13:15:34,598 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2093339731] [2019-12-07 13:15:34,598 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1ca50ece-dce0-4a79-b1e4-a38fdd71593a/bin/uautomizer/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 13:15:34,621 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2019-12-07 13:15:34,621 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 13:15:34,621 INFO L264 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 11 conjunts are in the unsatisfiable core [2019-12-07 13:15:34,623 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 13:15:34,686 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 0 proven. 216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:15:34,686 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 13:15:34,686 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2019-12-07 13:15:34,686 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467602897] [2019-12-07 13:15:34,687 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-12-07 13:15:34,687 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 13:15:34,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-12-07 13:15:34,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2019-12-07 13:15:34,687 INFO L87 Difference]: Start difference. First operand 55 states and 55 transitions. Second operand 12 states. [2019-12-07 13:15:34,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:15:34,709 INFO L93 Difference]: Finished difference Result 59 states and 59 transitions. [2019-12-07 13:15:34,709 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-12-07 13:15:34,709 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 50 [2019-12-07 13:15:34,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:15:34,710 INFO L225 Difference]: With dead ends: 59 [2019-12-07 13:15:34,710 INFO L226 Difference]: Without dead ends: 58 [2019-12-07 13:15:34,710 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 40 SyntacticMatches, 9 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2019-12-07 13:15:34,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2019-12-07 13:15:34,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2019-12-07 13:15:34,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2019-12-07 13:15:34,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 57 transitions. [2019-12-07 13:15:34,714 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 57 transitions. Word has length 50 [2019-12-07 13:15:34,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:15:34,714 INFO L462 AbstractCegarLoop]: Abstraction has 57 states and 57 transitions. [2019-12-07 13:15:34,714 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-12-07 13:15:34,715 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 57 transitions. [2019-12-07 13:15:34,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2019-12-07 13:15:34,715 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:15:34,715 INFO L410 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 10, 1, 1] [2019-12-07 13:15:34,915 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 13:15:34,916 INFO L410 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 13:15:34,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:15:34,917 INFO L82 PathProgramCache]: Analyzing trace with hash -390144735, now seen corresponding path program 10 times [2019-12-07 13:15:34,917 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 13:15:34,917 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560591528] [2019-12-07 13:15:34,918 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:15:34,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:15:35,016 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:15:35,016 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560591528] [2019-12-07 13:15:35,016 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [800387915] [2019-12-07 13:15:35,016 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1ca50ece-dce0-4a79-b1e4-a38fdd71593a/bin/uautomizer/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 13:15:35,036 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-12-07 13:15:35,037 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 13:15:35,037 INFO L264 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 12 conjunts are in the unsatisfiable core [2019-12-07 13:15:35,038 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 13:15:35,098 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:15:35,098 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 13:15:35,098 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2019-12-07 13:15:35,098 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551964114] [2019-12-07 13:15:35,098 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-12-07 13:15:35,098 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 13:15:35,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-12-07 13:15:35,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2019-12-07 13:15:35,099 INFO L87 Difference]: Start difference. First operand 57 states and 57 transitions. Second operand 13 states. [2019-12-07 13:15:35,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:15:35,125 INFO L93 Difference]: Finished difference Result 62 states and 62 transitions. [2019-12-07 13:15:35,125 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-12-07 13:15:35,126 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 53 [2019-12-07 13:15:35,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:15:35,126 INFO L225 Difference]: With dead ends: 62 [2019-12-07 13:15:35,126 INFO L226 Difference]: Without dead ends: 61 [2019-12-07 13:15:35,126 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 42 SyntacticMatches, 10 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2019-12-07 13:15:35,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2019-12-07 13:15:35,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 60. [2019-12-07 13:15:35,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2019-12-07 13:15:35,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 60 transitions. [2019-12-07 13:15:35,129 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 60 transitions. Word has length 53 [2019-12-07 13:15:35,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:15:35,130 INFO L462 AbstractCegarLoop]: Abstraction has 60 states and 60 transitions. [2019-12-07 13:15:35,130 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-12-07 13:15:35,130 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 60 transitions. [2019-12-07 13:15:35,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2019-12-07 13:15:35,130 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:15:35,130 INFO L410 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 1, 1] [2019-12-07 13:15:35,331 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 13:15:35,331 INFO L410 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 13:15:35,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:15:35,332 INFO L82 PathProgramCache]: Analyzing trace with hash -1266934173, now seen corresponding path program 10 times [2019-12-07 13:15:35,333 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 13:15:35,333 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183585433] [2019-12-07 13:15:35,333 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:15:35,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:15:35,440 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:15:35,441 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183585433] [2019-12-07 13:15:35,441 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1638645383] [2019-12-07 13:15:35,441 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1ca50ece-dce0-4a79-b1e4-a38fdd71593a/bin/uautomizer/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 13:15:35,463 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-12-07 13:15:35,463 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 13:15:35,464 INFO L264 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 12 conjunts are in the unsatisfiable core [2019-12-07 13:15:35,464 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 13:15:35,532 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:15:35,532 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 13:15:35,532 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2019-12-07 13:15:35,532 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063717392] [2019-12-07 13:15:35,532 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-12-07 13:15:35,533 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 13:15:35,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-12-07 13:15:35,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2019-12-07 13:15:35,533 INFO L87 Difference]: Start difference. First operand 60 states and 60 transitions. Second operand 13 states. [2019-12-07 13:15:35,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:15:35,557 INFO L93 Difference]: Finished difference Result 64 states and 64 transitions. [2019-12-07 13:15:35,558 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-12-07 13:15:35,558 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 55 [2019-12-07 13:15:35,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:15:35,558 INFO L225 Difference]: With dead ends: 64 [2019-12-07 13:15:35,558 INFO L226 Difference]: Without dead ends: 63 [2019-12-07 13:15:35,559 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 44 SyntacticMatches, 10 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2019-12-07 13:15:35,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2019-12-07 13:15:35,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 62. [2019-12-07 13:15:35,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2019-12-07 13:15:35,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 62 transitions. [2019-12-07 13:15:35,561 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 62 transitions. Word has length 55 [2019-12-07 13:15:35,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:15:35,561 INFO L462 AbstractCegarLoop]: Abstraction has 62 states and 62 transitions. [2019-12-07 13:15:35,562 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-12-07 13:15:35,562 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 62 transitions. [2019-12-07 13:15:35,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2019-12-07 13:15:35,562 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:15:35,562 INFO L410 BasicCegarLoop]: trace histogram [12, 11, 11, 11, 11, 1, 1] [2019-12-07 13:15:35,762 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 13:15:35,763 INFO L410 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 13:15:35,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:15:35,763 INFO L82 PathProgramCache]: Analyzing trace with hash 936696815, now seen corresponding path program 11 times [2019-12-07 13:15:35,763 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 13:15:35,763 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908573341] [2019-12-07 13:15:35,763 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:15:35,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:15:35,850 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 0 proven. 297 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:15:35,850 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908573341] [2019-12-07 13:15:35,850 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1333565544] [2019-12-07 13:15:35,850 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1ca50ece-dce0-4a79-b1e4-a38fdd71593a/bin/uautomizer/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 13:15:35,876 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2019-12-07 13:15:35,876 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 13:15:35,877 INFO L264 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 13 conjunts are in the unsatisfiable core [2019-12-07 13:15:35,878 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 13:15:35,963 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 0 proven. 297 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:15:35,963 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 13:15:35,963 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2019-12-07 13:15:35,963 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711693655] [2019-12-07 13:15:35,963 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-12-07 13:15:35,963 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 13:15:35,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-12-07 13:15:35,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2019-12-07 13:15:35,964 INFO L87 Difference]: Start difference. First operand 62 states and 62 transitions. Second operand 14 states. [2019-12-07 13:15:35,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:15:35,992 INFO L93 Difference]: Finished difference Result 67 states and 67 transitions. [2019-12-07 13:15:35,993 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-12-07 13:15:35,993 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 58 [2019-12-07 13:15:35,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:15:35,993 INFO L225 Difference]: With dead ends: 67 [2019-12-07 13:15:35,993 INFO L226 Difference]: Without dead ends: 66 [2019-12-07 13:15:35,993 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 46 SyntacticMatches, 11 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2019-12-07 13:15:35,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2019-12-07 13:15:35,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2019-12-07 13:15:35,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2019-12-07 13:15:35,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 65 transitions. [2019-12-07 13:15:35,995 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 65 transitions. Word has length 58 [2019-12-07 13:15:35,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:15:35,996 INFO L462 AbstractCegarLoop]: Abstraction has 65 states and 65 transitions. [2019-12-07 13:15:35,996 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-12-07 13:15:35,996 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 65 transitions. [2019-12-07 13:15:35,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2019-12-07 13:15:35,996 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:15:35,996 INFO L410 BasicCegarLoop]: trace histogram [12, 12, 12, 11, 11, 1, 1] [2019-12-07 13:15:36,196 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 13:15:36,197 INFO L410 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 13:15:36,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:15:36,198 INFO L82 PathProgramCache]: Analyzing trace with hash -1777491535, now seen corresponding path program 11 times [2019-12-07 13:15:36,198 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 13:15:36,198 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562369095] [2019-12-07 13:15:36,199 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:15:36,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:15:36,304 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 0 proven. 319 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:15:36,305 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562369095] [2019-12-07 13:15:36,305 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [760523679] [2019-12-07 13:15:36,305 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1ca50ece-dce0-4a79-b1e4-a38fdd71593a/bin/uautomizer/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 13:15:36,329 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2019-12-07 13:15:36,329 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 13:15:36,330 INFO L264 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 13 conjunts are in the unsatisfiable core [2019-12-07 13:15:36,331 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 13:15:36,402 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 0 proven. 319 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:15:36,402 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 13:15:36,402 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2019-12-07 13:15:36,402 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659941480] [2019-12-07 13:15:36,403 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-12-07 13:15:36,403 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 13:15:36,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-12-07 13:15:36,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2019-12-07 13:15:36,403 INFO L87 Difference]: Start difference. First operand 65 states and 65 transitions. Second operand 14 states. [2019-12-07 13:15:36,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:15:36,429 INFO L93 Difference]: Finished difference Result 69 states and 69 transitions. [2019-12-07 13:15:36,429 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-12-07 13:15:36,429 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 60 [2019-12-07 13:15:36,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:15:36,430 INFO L225 Difference]: With dead ends: 69 [2019-12-07 13:15:36,430 INFO L226 Difference]: Without dead ends: 68 [2019-12-07 13:15:36,430 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 48 SyntacticMatches, 11 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2019-12-07 13:15:36,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2019-12-07 13:15:36,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 67. [2019-12-07 13:15:36,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2019-12-07 13:15:36,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 67 transitions. [2019-12-07 13:15:36,433 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 67 transitions. Word has length 60 [2019-12-07 13:15:36,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:15:36,433 INFO L462 AbstractCegarLoop]: Abstraction has 67 states and 67 transitions. [2019-12-07 13:15:36,433 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-12-07 13:15:36,433 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 67 transitions. [2019-12-07 13:15:36,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2019-12-07 13:15:36,434 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:15:36,434 INFO L410 BasicCegarLoop]: trace histogram [13, 12, 12, 12, 12, 1, 1] [2019-12-07 13:15:36,634 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 13:15:36,635 INFO L410 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 13:15:36,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:15:36,635 INFO L82 PathProgramCache]: Analyzing trace with hash -598479391, now seen corresponding path program 12 times [2019-12-07 13:15:36,636 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 13:15:36,636 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604797594] [2019-12-07 13:15:36,636 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:15:36,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:15:36,758 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:15:36,758 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604797594] [2019-12-07 13:15:36,758 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [404560471] [2019-12-07 13:15:36,759 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1ca50ece-dce0-4a79-b1e4-a38fdd71593a/bin/uautomizer/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 13:15:36,782 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2019-12-07 13:15:36,782 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 13:15:36,783 INFO L264 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 14 conjunts are in the unsatisfiable core [2019-12-07 13:15:36,783 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 13:15:36,860 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:15:36,860 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 13:15:36,860 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2019-12-07 13:15:36,861 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13886016] [2019-12-07 13:15:36,861 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-12-07 13:15:36,861 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 13:15:36,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-12-07 13:15:36,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2019-12-07 13:15:36,861 INFO L87 Difference]: Start difference. First operand 67 states and 67 transitions. Second operand 15 states. [2019-12-07 13:15:36,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:15:36,892 INFO L93 Difference]: Finished difference Result 72 states and 72 transitions. [2019-12-07 13:15:36,893 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-12-07 13:15:36,893 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 63 [2019-12-07 13:15:36,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:15:36,893 INFO L225 Difference]: With dead ends: 72 [2019-12-07 13:15:36,893 INFO L226 Difference]: Without dead ends: 71 [2019-12-07 13:15:36,893 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 50 SyntacticMatches, 12 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2019-12-07 13:15:36,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2019-12-07 13:15:36,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 70. [2019-12-07 13:15:36,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2019-12-07 13:15:36,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 70 transitions. [2019-12-07 13:15:36,895 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 70 transitions. Word has length 63 [2019-12-07 13:15:36,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:15:36,895 INFO L462 AbstractCegarLoop]: Abstraction has 70 states and 70 transitions. [2019-12-07 13:15:36,895 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-12-07 13:15:36,895 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 70 transitions. [2019-12-07 13:15:36,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2019-12-07 13:15:36,896 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:15:36,896 INFO L410 BasicCegarLoop]: trace histogram [13, 13, 13, 12, 12, 1, 1] [2019-12-07 13:15:37,096 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 13:15:37,097 INFO L410 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 13:15:37,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:15:37,097 INFO L82 PathProgramCache]: Analyzing trace with hash 386924323, now seen corresponding path program 12 times [2019-12-07 13:15:37,098 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 13:15:37,098 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557393248] [2019-12-07 13:15:37,098 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:15:37,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:15:37,214 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:15:37,214 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557393248] [2019-12-07 13:15:37,215 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1931027901] [2019-12-07 13:15:37,215 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1ca50ece-dce0-4a79-b1e4-a38fdd71593a/bin/uautomizer/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 13:15:37,239 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2019-12-07 13:15:37,239 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 13:15:37,239 INFO L264 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 14 conjunts are in the unsatisfiable core [2019-12-07 13:15:37,240 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 13:15:37,330 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:15:37,330 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 13:15:37,330 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2019-12-07 13:15:37,330 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948528145] [2019-12-07 13:15:37,330 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-12-07 13:15:37,330 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 13:15:37,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-12-07 13:15:37,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2019-12-07 13:15:37,331 INFO L87 Difference]: Start difference. First operand 70 states and 70 transitions. Second operand 15 states. [2019-12-07 13:15:37,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:15:37,361 INFO L93 Difference]: Finished difference Result 74 states and 74 transitions. [2019-12-07 13:15:37,362 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-12-07 13:15:37,362 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 65 [2019-12-07 13:15:37,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:15:37,362 INFO L225 Difference]: With dead ends: 74 [2019-12-07 13:15:37,362 INFO L226 Difference]: Without dead ends: 73 [2019-12-07 13:15:37,363 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 52 SyntacticMatches, 12 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2019-12-07 13:15:37,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2019-12-07 13:15:37,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 72. [2019-12-07 13:15:37,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2019-12-07 13:15:37,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 72 transitions. [2019-12-07 13:15:37,364 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 72 transitions. Word has length 65 [2019-12-07 13:15:37,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:15:37,365 INFO L462 AbstractCegarLoop]: Abstraction has 72 states and 72 transitions. [2019-12-07 13:15:37,365 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-12-07 13:15:37,365 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 72 transitions. [2019-12-07 13:15:37,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2019-12-07 13:15:37,365 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:15:37,365 INFO L410 BasicCegarLoop]: trace histogram [14, 13, 13, 13, 13, 1, 1] [2019-12-07 13:15:37,565 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 13:15:37,566 INFO L410 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 13:15:37,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:15:37,567 INFO L82 PathProgramCache]: Analyzing trace with hash -829668561, now seen corresponding path program 13 times [2019-12-07 13:15:37,567 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 13:15:37,567 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52441757] [2019-12-07 13:15:37,568 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:15:37,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:15:37,698 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 0 proven. 416 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:15:37,698 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52441757] [2019-12-07 13:15:37,698 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1263901139] [2019-12-07 13:15:37,699 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1ca50ece-dce0-4a79-b1e4-a38fdd71593a/bin/uautomizer/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 13:15:37,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:15:37,718 INFO L264 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 15 conjunts are in the unsatisfiable core [2019-12-07 13:15:37,719 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 13:15:37,808 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 0 proven. 416 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:15:37,808 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 13:15:37,808 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2019-12-07 13:15:37,808 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336747150] [2019-12-07 13:15:37,808 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-12-07 13:15:37,808 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 13:15:37,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-12-07 13:15:37,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2019-12-07 13:15:37,809 INFO L87 Difference]: Start difference. First operand 72 states and 72 transitions. Second operand 16 states. [2019-12-07 13:15:37,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:15:37,842 INFO L93 Difference]: Finished difference Result 77 states and 77 transitions. [2019-12-07 13:15:37,842 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-12-07 13:15:37,842 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 68 [2019-12-07 13:15:37,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:15:37,843 INFO L225 Difference]: With dead ends: 77 [2019-12-07 13:15:37,843 INFO L226 Difference]: Without dead ends: 76 [2019-12-07 13:15:37,843 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 54 SyntacticMatches, 13 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2019-12-07 13:15:37,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2019-12-07 13:15:37,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 75. [2019-12-07 13:15:37,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2019-12-07 13:15:37,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 75 transitions. [2019-12-07 13:15:37,845 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 75 transitions. Word has length 68 [2019-12-07 13:15:37,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:15:37,845 INFO L462 AbstractCegarLoop]: Abstraction has 75 states and 75 transitions. [2019-12-07 13:15:37,846 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-12-07 13:15:37,846 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 75 transitions. [2019-12-07 13:15:37,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2019-12-07 13:15:37,846 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:15:37,846 INFO L410 BasicCegarLoop]: trace histogram [14, 14, 14, 13, 13, 1, 1] [2019-12-07 13:15:38,046 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 13:15:38,047 INFO L410 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 13:15:38,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:15:38,048 INFO L82 PathProgramCache]: Analyzing trace with hash 1552431345, now seen corresponding path program 13 times [2019-12-07 13:15:38,048 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 13:15:38,048 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915572987] [2019-12-07 13:15:38,049 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:15:38,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:15:38,174 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 0 proven. 442 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:15:38,174 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915572987] [2019-12-07 13:15:38,174 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1200427033] [2019-12-07 13:15:38,174 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1ca50ece-dce0-4a79-b1e4-a38fdd71593a/bin/uautomizer/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 13:15:38,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:15:38,196 INFO L264 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 15 conjunts are in the unsatisfiable core [2019-12-07 13:15:38,196 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 13:15:38,284 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 0 proven. 442 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:15:38,284 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 13:15:38,284 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2019-12-07 13:15:38,284 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011038878] [2019-12-07 13:15:38,284 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-12-07 13:15:38,284 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 13:15:38,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-12-07 13:15:38,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2019-12-07 13:15:38,285 INFO L87 Difference]: Start difference. First operand 75 states and 75 transitions. Second operand 16 states. [2019-12-07 13:15:38,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:15:38,314 INFO L93 Difference]: Finished difference Result 79 states and 79 transitions. [2019-12-07 13:15:38,314 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-12-07 13:15:38,315 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 70 [2019-12-07 13:15:38,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:15:38,315 INFO L225 Difference]: With dead ends: 79 [2019-12-07 13:15:38,315 INFO L226 Difference]: Without dead ends: 78 [2019-12-07 13:15:38,316 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 56 SyntacticMatches, 13 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2019-12-07 13:15:38,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2019-12-07 13:15:38,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 77. [2019-12-07 13:15:38,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2019-12-07 13:15:38,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 77 transitions. [2019-12-07 13:15:38,318 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 77 transitions. Word has length 70 [2019-12-07 13:15:38,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:15:38,318 INFO L462 AbstractCegarLoop]: Abstraction has 77 states and 77 transitions. [2019-12-07 13:15:38,318 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-12-07 13:15:38,318 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 77 transitions. [2019-12-07 13:15:38,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2019-12-07 13:15:38,319 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:15:38,319 INFO L410 BasicCegarLoop]: trace histogram [15, 14, 14, 14, 14, 1, 1] [2019-12-07 13:15:38,519 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 13:15:38,520 INFO L410 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 13:15:38,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:15:38,521 INFO L82 PathProgramCache]: Analyzing trace with hash 274402977, now seen corresponding path program 14 times [2019-12-07 13:15:38,521 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 13:15:38,521 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772640017] [2019-12-07 13:15:38,522 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:15:38,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:15:38,674 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 0 proven. 483 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:15:38,675 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772640017] [2019-12-07 13:15:38,675 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2126243435] [2019-12-07 13:15:38,675 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1ca50ece-dce0-4a79-b1e4-a38fdd71593a/bin/uautomizer/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 13:15:38,697 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-12-07 13:15:38,698 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 13:15:38,698 INFO L264 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 16 conjunts are in the unsatisfiable core [2019-12-07 13:15:38,699 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 13:15:38,805 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 0 proven. 483 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:15:38,805 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 13:15:38,805 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2019-12-07 13:15:38,805 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809867052] [2019-12-07 13:15:38,805 INFO L442 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-12-07 13:15:38,806 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 13:15:38,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-12-07 13:15:38,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2019-12-07 13:15:38,806 INFO L87 Difference]: Start difference. First operand 77 states and 77 transitions. Second operand 17 states. [2019-12-07 13:15:38,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:15:38,842 INFO L93 Difference]: Finished difference Result 82 states and 82 transitions. [2019-12-07 13:15:38,842 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-12-07 13:15:38,842 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 73 [2019-12-07 13:15:38,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:15:38,843 INFO L225 Difference]: With dead ends: 82 [2019-12-07 13:15:38,843 INFO L226 Difference]: Without dead ends: 81 [2019-12-07 13:15:38,843 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 58 SyntacticMatches, 14 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2019-12-07 13:15:38,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2019-12-07 13:15:38,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 80. [2019-12-07 13:15:38,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2019-12-07 13:15:38,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 80 transitions. [2019-12-07 13:15:38,845 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 80 transitions. Word has length 73 [2019-12-07 13:15:38,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:15:38,845 INFO L462 AbstractCegarLoop]: Abstraction has 80 states and 80 transitions. [2019-12-07 13:15:38,845 INFO L463 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-12-07 13:15:38,845 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 80 transitions. [2019-12-07 13:15:38,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2019-12-07 13:15:38,846 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:15:38,846 INFO L410 BasicCegarLoop]: trace histogram [15, 15, 15, 14, 14, 1, 1] [2019-12-07 13:15:39,046 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 13:15:39,047 INFO L410 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 13:15:39,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:15:39,048 INFO L82 PathProgramCache]: Analyzing trace with hash 1708257251, now seen corresponding path program 14 times [2019-12-07 13:15:39,048 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 13:15:39,048 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081928285] [2019-12-07 13:15:39,048 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:15:39,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:15:39,185 INFO L134 CoverageAnalysis]: Checked inductivity of 511 backedges. 0 proven. 511 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:15:39,185 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081928285] [2019-12-07 13:15:39,185 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1692039275] [2019-12-07 13:15:39,185 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1ca50ece-dce0-4a79-b1e4-a38fdd71593a/bin/uautomizer/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 13:15:39,206 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-12-07 13:15:39,206 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 13:15:39,206 INFO L264 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 16 conjunts are in the unsatisfiable core [2019-12-07 13:15:39,207 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 13:15:39,306 INFO L134 CoverageAnalysis]: Checked inductivity of 511 backedges. 0 proven. 511 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:15:39,306 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 13:15:39,306 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2019-12-07 13:15:39,306 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645657997] [2019-12-07 13:15:39,306 INFO L442 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-12-07 13:15:39,306 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 13:15:39,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-12-07 13:15:39,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2019-12-07 13:15:39,307 INFO L87 Difference]: Start difference. First operand 80 states and 80 transitions. Second operand 17 states. [2019-12-07 13:15:39,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:15:39,339 INFO L93 Difference]: Finished difference Result 84 states and 84 transitions. [2019-12-07 13:15:39,339 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-12-07 13:15:39,339 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 75 [2019-12-07 13:15:39,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:15:39,340 INFO L225 Difference]: With dead ends: 84 [2019-12-07 13:15:39,340 INFO L226 Difference]: Without dead ends: 83 [2019-12-07 13:15:39,340 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 60 SyntacticMatches, 14 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2019-12-07 13:15:39,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2019-12-07 13:15:39,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 82. [2019-12-07 13:15:39,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2019-12-07 13:15:39,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 82 transitions. [2019-12-07 13:15:39,342 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 82 transitions. Word has length 75 [2019-12-07 13:15:39,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:15:39,342 INFO L462 AbstractCegarLoop]: Abstraction has 82 states and 82 transitions. [2019-12-07 13:15:39,342 INFO L463 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-12-07 13:15:39,342 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 82 transitions. [2019-12-07 13:15:39,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2019-12-07 13:15:39,343 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:15:39,343 INFO L410 BasicCegarLoop]: trace histogram [16, 15, 15, 15, 15, 1, 1] [2019-12-07 13:15:39,543 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 13:15:39,543 INFO L410 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 13:15:39,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:15:39,544 INFO L82 PathProgramCache]: Analyzing trace with hash -375678353, now seen corresponding path program 15 times [2019-12-07 13:15:39,544 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 13:15:39,544 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493498214] [2019-12-07 13:15:39,544 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:15:39,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:15:39,656 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 0 proven. 555 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:15:39,656 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493498214] [2019-12-07 13:15:39,656 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [805320446] [2019-12-07 13:15:39,656 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1ca50ece-dce0-4a79-b1e4-a38fdd71593a/bin/uautomizer/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 13:15:39,683 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2019-12-07 13:15:39,684 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 13:15:39,684 INFO L264 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 17 conjunts are in the unsatisfiable core [2019-12-07 13:15:39,685 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 13:15:39,792 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 0 proven. 555 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:15:39,792 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 13:15:39,792 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2019-12-07 13:15:39,792 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271820644] [2019-12-07 13:15:39,793 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-12-07 13:15:39,793 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 13:15:39,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-12-07 13:15:39,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2019-12-07 13:15:39,793 INFO L87 Difference]: Start difference. First operand 82 states and 82 transitions. Second operand 18 states. [2019-12-07 13:15:39,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:15:39,829 INFO L93 Difference]: Finished difference Result 87 states and 87 transitions. [2019-12-07 13:15:39,829 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-12-07 13:15:39,829 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 78 [2019-12-07 13:15:39,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:15:39,830 INFO L225 Difference]: With dead ends: 87 [2019-12-07 13:15:39,830 INFO L226 Difference]: Without dead ends: 86 [2019-12-07 13:15:39,830 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 62 SyntacticMatches, 15 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2019-12-07 13:15:39,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2019-12-07 13:15:39,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 85. [2019-12-07 13:15:39,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2019-12-07 13:15:39,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 85 transitions. [2019-12-07 13:15:39,832 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 85 transitions. Word has length 78 [2019-12-07 13:15:39,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:15:39,832 INFO L462 AbstractCegarLoop]: Abstraction has 85 states and 85 transitions. [2019-12-07 13:15:39,832 INFO L463 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-12-07 13:15:39,832 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 85 transitions. [2019-12-07 13:15:39,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2019-12-07 13:15:39,832 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:15:39,833 INFO L410 BasicCegarLoop]: trace histogram [16, 16, 16, 15, 15, 1, 1] [2019-12-07 13:15:40,033 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 13:15:40,033 INFO L410 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 13:15:40,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:15:40,034 INFO L82 PathProgramCache]: Analyzing trace with hash -249642959, now seen corresponding path program 15 times [2019-12-07 13:15:40,034 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 13:15:40,035 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95427842] [2019-12-07 13:15:40,035 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:15:40,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:15:40,154 INFO L134 CoverageAnalysis]: Checked inductivity of 585 backedges. 0 proven. 585 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:15:40,154 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95427842] [2019-12-07 13:15:40,154 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [272889265] [2019-12-07 13:15:40,154 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1ca50ece-dce0-4a79-b1e4-a38fdd71593a/bin/uautomizer/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 13:15:40,181 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2019-12-07 13:15:40,181 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 13:15:40,181 INFO L264 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 17 conjunts are in the unsatisfiable core [2019-12-07 13:15:40,182 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 13:15:40,294 INFO L134 CoverageAnalysis]: Checked inductivity of 585 backedges. 0 proven. 585 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:15:40,295 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 13:15:40,295 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2019-12-07 13:15:40,295 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274547289] [2019-12-07 13:15:40,295 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-12-07 13:15:40,295 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 13:15:40,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-12-07 13:15:40,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2019-12-07 13:15:40,295 INFO L87 Difference]: Start difference. First operand 85 states and 85 transitions. Second operand 18 states. [2019-12-07 13:15:40,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:15:40,326 INFO L93 Difference]: Finished difference Result 89 states and 89 transitions. [2019-12-07 13:15:40,327 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-12-07 13:15:40,327 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 80 [2019-12-07 13:15:40,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:15:40,327 INFO L225 Difference]: With dead ends: 89 [2019-12-07 13:15:40,327 INFO L226 Difference]: Without dead ends: 88 [2019-12-07 13:15:40,328 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 64 SyntacticMatches, 15 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2019-12-07 13:15:40,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2019-12-07 13:15:40,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 87. [2019-12-07 13:15:40,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2019-12-07 13:15:40,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 87 transitions. [2019-12-07 13:15:40,329 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 87 transitions. Word has length 80 [2019-12-07 13:15:40,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:15:40,330 INFO L462 AbstractCegarLoop]: Abstraction has 87 states and 87 transitions. [2019-12-07 13:15:40,330 INFO L463 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-12-07 13:15:40,330 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 87 transitions. [2019-12-07 13:15:40,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2019-12-07 13:15:40,330 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:15:40,330 INFO L410 BasicCegarLoop]: trace histogram [17, 16, 16, 16, 16, 1, 1] [2019-12-07 13:15:40,531 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 13:15:40,531 INFO L410 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 13:15:40,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:15:40,532 INFO L82 PathProgramCache]: Analyzing trace with hash 1770012513, now seen corresponding path program 16 times [2019-12-07 13:15:40,532 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 13:15:40,532 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106641045] [2019-12-07 13:15:40,533 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:15:40,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:15:40,683 INFO L134 CoverageAnalysis]: Checked inductivity of 632 backedges. 0 proven. 632 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:15:40,683 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106641045] [2019-12-07 13:15:40,683 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [543616767] [2019-12-07 13:15:40,683 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1ca50ece-dce0-4a79-b1e4-a38fdd71593a/bin/uautomizer/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 13:15:40,705 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-12-07 13:15:40,705 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 13:15:40,706 INFO L264 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 18 conjunts are in the unsatisfiable core [2019-12-07 13:15:40,707 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 13:15:40,828 INFO L134 CoverageAnalysis]: Checked inductivity of 632 backedges. 0 proven. 632 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:15:40,828 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 13:15:40,828 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2019-12-07 13:15:40,828 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234708874] [2019-12-07 13:15:40,828 INFO L442 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-12-07 13:15:40,828 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 13:15:40,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-12-07 13:15:40,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2019-12-07 13:15:40,829 INFO L87 Difference]: Start difference. First operand 87 states and 87 transitions. Second operand 19 states. [2019-12-07 13:15:40,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:15:40,876 INFO L93 Difference]: Finished difference Result 92 states and 92 transitions. [2019-12-07 13:15:40,877 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-12-07 13:15:40,877 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 83 [2019-12-07 13:15:40,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:15:40,877 INFO L225 Difference]: With dead ends: 92 [2019-12-07 13:15:40,877 INFO L226 Difference]: Without dead ends: 91 [2019-12-07 13:15:40,878 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 66 SyntacticMatches, 16 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2019-12-07 13:15:40,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2019-12-07 13:15:40,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 90. [2019-12-07 13:15:40,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2019-12-07 13:15:40,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 90 transitions. [2019-12-07 13:15:40,879 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 90 transitions. Word has length 83 [2019-12-07 13:15:40,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:15:40,880 INFO L462 AbstractCegarLoop]: Abstraction has 90 states and 90 transitions. [2019-12-07 13:15:40,880 INFO L463 AbstractCegarLoop]: Interpolant automaton has 19 states. [2019-12-07 13:15:40,880 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 90 transitions. [2019-12-07 13:15:40,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2019-12-07 13:15:40,880 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:15:40,880 INFO L410 BasicCegarLoop]: trace histogram [17, 17, 17, 16, 16, 1, 1] [2019-12-07 13:15:41,080 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 13:15:41,081 INFO L410 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 13:15:41,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:15:41,082 INFO L82 PathProgramCache]: Analyzing trace with hash 174977187, now seen corresponding path program 16 times [2019-12-07 13:15:41,082 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 13:15:41,082 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898883196] [2019-12-07 13:15:41,082 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:15:41,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:15:41,297 INFO L134 CoverageAnalysis]: Checked inductivity of 664 backedges. 0 proven. 664 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:15:41,297 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898883196] [2019-12-07 13:15:41,297 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2121519294] [2019-12-07 13:15:41,297 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1ca50ece-dce0-4a79-b1e4-a38fdd71593a/bin/uautomizer/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 13:15:41,333 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-12-07 13:15:41,334 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 13:15:41,334 INFO L264 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 18 conjunts are in the unsatisfiable core [2019-12-07 13:15:41,336 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 13:15:41,464 INFO L134 CoverageAnalysis]: Checked inductivity of 664 backedges. 0 proven. 664 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:15:41,465 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 13:15:41,465 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2019-12-07 13:15:41,465 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543878347] [2019-12-07 13:15:41,465 INFO L442 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-12-07 13:15:41,465 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 13:15:41,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-12-07 13:15:41,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2019-12-07 13:15:41,466 INFO L87 Difference]: Start difference. First operand 90 states and 90 transitions. Second operand 19 states. [2019-12-07 13:15:41,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:15:41,493 INFO L93 Difference]: Finished difference Result 94 states and 94 transitions. [2019-12-07 13:15:41,493 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-12-07 13:15:41,493 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 85 [2019-12-07 13:15:41,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:15:41,494 INFO L225 Difference]: With dead ends: 94 [2019-12-07 13:15:41,494 INFO L226 Difference]: Without dead ends: 93 [2019-12-07 13:15:41,494 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 68 SyntacticMatches, 16 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2019-12-07 13:15:41,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2019-12-07 13:15:41,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 92. [2019-12-07 13:15:41,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2019-12-07 13:15:41,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 92 transitions. [2019-12-07 13:15:41,496 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 92 transitions. Word has length 85 [2019-12-07 13:15:41,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:15:41,496 INFO L462 AbstractCegarLoop]: Abstraction has 92 states and 92 transitions. [2019-12-07 13:15:41,496 INFO L463 AbstractCegarLoop]: Interpolant automaton has 19 states. [2019-12-07 13:15:41,496 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 92 transitions. [2019-12-07 13:15:41,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2019-12-07 13:15:41,497 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:15:41,497 INFO L410 BasicCegarLoop]: trace histogram [18, 17, 17, 17, 17, 1, 1] [2019-12-07 13:15:41,697 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 13:15:41,698 INFO L410 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 13:15:41,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:15:41,699 INFO L82 PathProgramCache]: Analyzing trace with hash -1344872017, now seen corresponding path program 17 times [2019-12-07 13:15:41,699 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 13:15:41,699 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299408617] [2019-12-07 13:15:41,700 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:15:41,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:15:41,859 INFO L134 CoverageAnalysis]: Checked inductivity of 714 backedges. 0 proven. 714 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:15:41,859 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299408617] [2019-12-07 13:15:41,859 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1401369035] [2019-12-07 13:15:41,859 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1ca50ece-dce0-4a79-b1e4-a38fdd71593a/bin/uautomizer/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 13:15:41,888 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2019-12-07 13:15:41,888 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 13:15:41,889 INFO L264 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 19 conjunts are in the unsatisfiable core [2019-12-07 13:15:41,890 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 13:15:42,021 INFO L134 CoverageAnalysis]: Checked inductivity of 714 backedges. 0 proven. 714 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:15:42,022 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 13:15:42,022 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2019-12-07 13:15:42,022 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256655982] [2019-12-07 13:15:42,022 INFO L442 AbstractCegarLoop]: Interpolant automaton has 20 states [2019-12-07 13:15:42,022 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 13:15:42,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2019-12-07 13:15:42,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2019-12-07 13:15:42,023 INFO L87 Difference]: Start difference. First operand 92 states and 92 transitions. Second operand 20 states. [2019-12-07 13:15:42,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:15:42,064 INFO L93 Difference]: Finished difference Result 97 states and 97 transitions. [2019-12-07 13:15:42,064 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2019-12-07 13:15:42,064 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 88 [2019-12-07 13:15:42,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:15:42,064 INFO L225 Difference]: With dead ends: 97 [2019-12-07 13:15:42,064 INFO L226 Difference]: Without dead ends: 96 [2019-12-07 13:15:42,065 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 70 SyntacticMatches, 17 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2019-12-07 13:15:42,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2019-12-07 13:15:42,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 95. [2019-12-07 13:15:42,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2019-12-07 13:15:42,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 95 transitions. [2019-12-07 13:15:42,067 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 95 transitions. Word has length 88 [2019-12-07 13:15:42,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:15:42,067 INFO L462 AbstractCegarLoop]: Abstraction has 95 states and 95 transitions. [2019-12-07 13:15:42,067 INFO L463 AbstractCegarLoop]: Interpolant automaton has 20 states. [2019-12-07 13:15:42,068 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 95 transitions. [2019-12-07 13:15:42,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2019-12-07 13:15:42,068 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:15:42,068 INFO L410 BasicCegarLoop]: trace histogram [18, 18, 18, 17, 17, 1, 1] [2019-12-07 13:15:42,269 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 13:15:42,269 INFO L410 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 13:15:42,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:15:42,270 INFO L82 PathProgramCache]: Analyzing trace with hash 363149169, now seen corresponding path program 17 times [2019-12-07 13:15:42,270 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 13:15:42,270 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157713947] [2019-12-07 13:15:42,271 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:15:42,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:15:42,454 INFO L134 CoverageAnalysis]: Checked inductivity of 748 backedges. 0 proven. 748 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:15:42,455 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157713947] [2019-12-07 13:15:42,455 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1092115059] [2019-12-07 13:15:42,455 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1ca50ece-dce0-4a79-b1e4-a38fdd71593a/bin/uautomizer/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 13:15:42,484 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2019-12-07 13:15:42,484 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 13:15:42,485 INFO L264 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 19 conjunts are in the unsatisfiable core [2019-12-07 13:15:42,486 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 13:15:42,629 INFO L134 CoverageAnalysis]: Checked inductivity of 748 backedges. 0 proven. 748 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:15:42,630 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 13:15:42,630 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2019-12-07 13:15:42,630 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410675504] [2019-12-07 13:15:42,630 INFO L442 AbstractCegarLoop]: Interpolant automaton has 20 states [2019-12-07 13:15:42,630 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 13:15:42,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2019-12-07 13:15:42,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2019-12-07 13:15:42,631 INFO L87 Difference]: Start difference. First operand 95 states and 95 transitions. Second operand 20 states. [2019-12-07 13:15:42,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:15:42,666 INFO L93 Difference]: Finished difference Result 99 states and 99 transitions. [2019-12-07 13:15:42,666 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2019-12-07 13:15:42,666 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 90 [2019-12-07 13:15:42,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:15:42,667 INFO L225 Difference]: With dead ends: 99 [2019-12-07 13:15:42,667 INFO L226 Difference]: Without dead ends: 98 [2019-12-07 13:15:42,667 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 72 SyntacticMatches, 17 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2019-12-07 13:15:42,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2019-12-07 13:15:42,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 97. [2019-12-07 13:15:42,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2019-12-07 13:15:42,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 97 transitions. [2019-12-07 13:15:42,669 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 97 transitions. Word has length 90 [2019-12-07 13:15:42,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:15:42,670 INFO L462 AbstractCegarLoop]: Abstraction has 97 states and 97 transitions. [2019-12-07 13:15:42,670 INFO L463 AbstractCegarLoop]: Interpolant automaton has 20 states. [2019-12-07 13:15:42,670 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 97 transitions. [2019-12-07 13:15:42,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2019-12-07 13:15:42,670 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:15:42,670 INFO L410 BasicCegarLoop]: trace histogram [19, 18, 18, 18, 18, 1, 1] [2019-12-07 13:15:42,870 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 13:15:42,871 INFO L410 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 13:15:42,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:15:42,871 INFO L82 PathProgramCache]: Analyzing trace with hash -445677535, now seen corresponding path program 18 times [2019-12-07 13:15:42,871 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 13:15:42,871 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363640073] [2019-12-07 13:15:42,871 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:15:42,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:15:43,008 INFO L134 CoverageAnalysis]: Checked inductivity of 801 backedges. 0 proven. 801 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:15:43,008 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363640073] [2019-12-07 13:15:43,008 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [475991000] [2019-12-07 13:15:43,008 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1ca50ece-dce0-4a79-b1e4-a38fdd71593a/bin/uautomizer/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 13:15:43,037 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2019-12-07 13:15:43,037 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 13:15:43,037 INFO L264 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 20 conjunts are in the unsatisfiable core [2019-12-07 13:15:43,038 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 13:15:43,184 INFO L134 CoverageAnalysis]: Checked inductivity of 801 backedges. 0 proven. 801 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:15:43,184 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 13:15:43,184 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2019-12-07 13:15:43,184 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917273116] [2019-12-07 13:15:43,185 INFO L442 AbstractCegarLoop]: Interpolant automaton has 21 states [2019-12-07 13:15:43,185 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 13:15:43,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2019-12-07 13:15:43,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2019-12-07 13:15:43,185 INFO L87 Difference]: Start difference. First operand 97 states and 97 transitions. Second operand 21 states. [2019-12-07 13:15:43,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:15:43,232 INFO L93 Difference]: Finished difference Result 102 states and 102 transitions. [2019-12-07 13:15:43,232 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-12-07 13:15:43,233 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 93 [2019-12-07 13:15:43,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:15:43,233 INFO L225 Difference]: With dead ends: 102 [2019-12-07 13:15:43,233 INFO L226 Difference]: Without dead ends: 101 [2019-12-07 13:15:43,234 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 74 SyntacticMatches, 18 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2019-12-07 13:15:43,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2019-12-07 13:15:43,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 100. [2019-12-07 13:15:43,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2019-12-07 13:15:43,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 100 transitions. [2019-12-07 13:15:43,236 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 100 transitions. Word has length 93 [2019-12-07 13:15:43,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:15:43,237 INFO L462 AbstractCegarLoop]: Abstraction has 100 states and 100 transitions. [2019-12-07 13:15:43,237 INFO L463 AbstractCegarLoop]: Interpolant automaton has 21 states. [2019-12-07 13:15:43,237 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 100 transitions. [2019-12-07 13:15:43,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2019-12-07 13:15:43,237 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:15:43,237 INFO L410 BasicCegarLoop]: trace histogram [19, 19, 19, 18, 18, 1, 1] [2019-12-07 13:15:43,438 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 13:15:43,438 INFO L410 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 13:15:43,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:15:43,439 INFO L82 PathProgramCache]: Analyzing trace with hash 1200619875, now seen corresponding path program 18 times [2019-12-07 13:15:43,440 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 13:15:43,440 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443513520] [2019-12-07 13:15:43,440 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:15:43,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:15:43,626 INFO L134 CoverageAnalysis]: Checked inductivity of 837 backedges. 0 proven. 837 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:15:43,627 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443513520] [2019-12-07 13:15:43,627 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [535569373] [2019-12-07 13:15:43,627 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1ca50ece-dce0-4a79-b1e4-a38fdd71593a/bin/uautomizer/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 13:15:43,657 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2019-12-07 13:15:43,657 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 13:15:43,658 INFO L264 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 20 conjunts are in the unsatisfiable core [2019-12-07 13:15:43,658 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 13:15:43,806 INFO L134 CoverageAnalysis]: Checked inductivity of 837 backedges. 0 proven. 837 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:15:43,806 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 13:15:43,807 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2019-12-07 13:15:43,807 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431039489] [2019-12-07 13:15:43,807 INFO L442 AbstractCegarLoop]: Interpolant automaton has 21 states [2019-12-07 13:15:43,807 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 13:15:43,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2019-12-07 13:15:43,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2019-12-07 13:15:43,808 INFO L87 Difference]: Start difference. First operand 100 states and 100 transitions. Second operand 21 states. [2019-12-07 13:15:43,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:15:43,843 INFO L93 Difference]: Finished difference Result 104 states and 104 transitions. [2019-12-07 13:15:43,843 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-12-07 13:15:43,843 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 95 [2019-12-07 13:15:43,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:15:43,843 INFO L225 Difference]: With dead ends: 104 [2019-12-07 13:15:43,844 INFO L226 Difference]: Without dead ends: 103 [2019-12-07 13:15:43,844 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 76 SyntacticMatches, 18 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2019-12-07 13:15:43,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2019-12-07 13:15:43,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 102. [2019-12-07 13:15:43,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2019-12-07 13:15:43,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 102 transitions. [2019-12-07 13:15:43,846 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 102 transitions. Word has length 95 [2019-12-07 13:15:43,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:15:43,846 INFO L462 AbstractCegarLoop]: Abstraction has 102 states and 102 transitions. [2019-12-07 13:15:43,846 INFO L463 AbstractCegarLoop]: Interpolant automaton has 21 states. [2019-12-07 13:15:43,846 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 102 transitions. [2019-12-07 13:15:43,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2019-12-07 13:15:43,847 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:15:43,847 INFO L410 BasicCegarLoop]: trace histogram [20, 19, 19, 19, 19, 1, 1] [2019-12-07 13:15:44,047 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 13:15:44,047 INFO L410 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 13:15:44,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:15:44,047 INFO L82 PathProgramCache]: Analyzing trace with hash -820897553, now seen corresponding path program 19 times [2019-12-07 13:15:44,048 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 13:15:44,048 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797283537] [2019-12-07 13:15:44,048 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:15:44,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:15:44,225 INFO L134 CoverageAnalysis]: Checked inductivity of 893 backedges. 0 proven. 893 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:15:44,226 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797283537] [2019-12-07 13:15:44,226 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1616046391] [2019-12-07 13:15:44,226 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1ca50ece-dce0-4a79-b1e4-a38fdd71593a/bin/uautomizer/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 13:15:44,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:15:44,257 INFO L264 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 21 conjunts are in the unsatisfiable core [2019-12-07 13:15:44,259 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 13:15:44,430 INFO L134 CoverageAnalysis]: Checked inductivity of 893 backedges. 0 proven. 893 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:15:44,430 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 13:15:44,430 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 20 [2019-12-07 13:15:44,431 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791427628] [2019-12-07 13:15:44,431 INFO L442 AbstractCegarLoop]: Interpolant automaton has 22 states [2019-12-07 13:15:44,431 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 13:15:44,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2019-12-07 13:15:44,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2019-12-07 13:15:44,431 INFO L87 Difference]: Start difference. First operand 102 states and 102 transitions. Second operand 22 states. [2019-12-07 13:15:44,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:15:44,484 INFO L93 Difference]: Finished difference Result 107 states and 107 transitions. [2019-12-07 13:15:44,485 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-12-07 13:15:44,485 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 98 [2019-12-07 13:15:44,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:15:44,486 INFO L225 Difference]: With dead ends: 107 [2019-12-07 13:15:44,486 INFO L226 Difference]: Without dead ends: 106 [2019-12-07 13:15:44,486 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 78 SyntacticMatches, 19 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2019-12-07 13:15:44,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2019-12-07 13:15:44,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 105. [2019-12-07 13:15:44,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2019-12-07 13:15:44,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 105 transitions. [2019-12-07 13:15:44,489 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 105 transitions. Word has length 98 [2019-12-07 13:15:44,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:15:44,489 INFO L462 AbstractCegarLoop]: Abstraction has 105 states and 105 transitions. [2019-12-07 13:15:44,489 INFO L463 AbstractCegarLoop]: Interpolant automaton has 22 states. [2019-12-07 13:15:44,489 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 105 transitions. [2019-12-07 13:15:44,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2019-12-07 13:15:44,490 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:15:44,490 INFO L410 BasicCegarLoop]: trace histogram [20, 20, 20, 19, 19, 1, 1] [2019-12-07 13:15:44,690 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 13:15:44,691 INFO L410 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 13:15:44,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:15:44,691 INFO L82 PathProgramCache]: Analyzing trace with hash 1391435441, now seen corresponding path program 19 times [2019-12-07 13:15:44,691 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 13:15:44,691 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958789897] [2019-12-07 13:15:44,691 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:15:44,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 13:15:44,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 13:15:44,728 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 13:15:44,728 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 13:15:44,750 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 01:15:44 BoogieIcfgContainer [2019-12-07 13:15:44,750 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 13:15:44,751 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 13:15:44,751 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 13:15:44,751 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 13:15:44,751 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 01:15:28" (3/4) ... [2019-12-07 13:15:44,753 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-12-07 13:15:44,789 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_1ca50ece-dce0-4a79-b1e4-a38fdd71593a/bin/uautomizer/witness.graphml [2019-12-07 13:15:44,789 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 13:15:44,791 INFO L168 Benchmark]: Toolchain (without parser) took 16888.85 ms. Allocated memory was 1.0 GB in the beginning and 1.4 GB in the end (delta: 328.7 MB). Free memory was 946.0 MB in the beginning and 1.1 GB in the end (delta: -118.7 MB). Peak memory consumption was 210.1 MB. Max. memory is 11.5 GB. [2019-12-07 13:15:44,791 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 960.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 13:15:44,791 INFO L168 Benchmark]: CACSL2BoogieTranslator took 170.05 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 119.5 MB). Free memory was 946.0 MB in the beginning and 1.1 GB in the end (delta: -167.3 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. [2019-12-07 13:15:44,791 INFO L168 Benchmark]: Boogie Procedure Inliner took 20.32 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 13:15:44,791 INFO L168 Benchmark]: Boogie Preprocessor took 12.56 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 13:15:44,792 INFO L168 Benchmark]: RCFGBuilder took 136.48 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: 19.2 MB). Peak memory consumption was 19.2 MB. Max. memory is 11.5 GB. [2019-12-07 13:15:44,792 INFO L168 Benchmark]: TraceAbstraction took 16508.00 ms. Allocated memory was 1.1 GB in the beginning and 1.4 GB in the end (delta: 209.2 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 15.5 MB). Peak memory consumption was 224.7 MB. Max. memory is 11.5 GB. [2019-12-07 13:15:44,792 INFO L168 Benchmark]: Witness Printer took 38.42 ms. Allocated memory is still 1.4 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 13.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 11.5 GB. [2019-12-07 13:15:44,793 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 960.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 170.05 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 119.5 MB). Free memory was 946.0 MB in the beginning and 1.1 GB in the end (delta: -167.3 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 20.32 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. * Boogie Preprocessor took 12.56 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 136.48 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: 19.2 MB). Peak memory consumption was 19.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 16508.00 ms. Allocated memory was 1.1 GB in the beginning and 1.4 GB in the end (delta: 209.2 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 15.5 MB). Peak memory consumption was 224.7 MB. Max. memory is 11.5 GB. * Witness Printer took 38.42 ms. Allocated memory is still 1.4 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 13.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 20]: integer overflow possible integer overflow possible We found a FailurePath: [L15] int x, y; [L16] x = 1 [L17] y = 1 [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] 3*y - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 4 error locations. Result: UNSAFE, OverallTime: 16.4s, OverallIterations: 42, TraceHistogramMax: 20, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 228 SDtfs, 413 SDslu, 1318 SDs, 0 SdLazy, 1445 SolverSat, 55 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2317 GetRequests, 1554 SyntacticMatches, 361 SemanticMatches, 402 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2109 ImplicationChecksByTransitivity, 4.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=105occurred in iteration=41, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 41 MinimizatonAttempts, 39 StatesRemovedByMinimization, 39 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 5.8s InterpolantComputationTime, 4022 NumberOfCodeBlocks, 4022 NumberOfCodeBlocksAsserted, 283 NumberOfCheckSat, 3844 ConstructedInterpolants, 0 QuantifiedInterpolants, 753036 SizeOfPredicates, 0 NumberOfNonLiveVariables, 3617 ConjunctsInSsa, 435 ConjunctsInUnsatCore, 78 InterpolantComputations, 4 PerfectInterpolantSequences, 0/23218 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...