java -ea -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline_WitnessPrinter.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/loop-lit/jm2006_true-unreach-call.c.i.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-61f4311 [2018-11-23 11:41:13,198 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-23 11:41:13,200 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-23 11:41:13,213 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-23 11:41:13,213 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-23 11:41:13,214 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-23 11:41:13,215 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-23 11:41:13,217 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-23 11:41:13,219 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-23 11:41:13,220 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-23 11:41:13,221 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-23 11:41:13,221 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-23 11:41:13,222 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-23 11:41:13,223 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-23 11:41:13,224 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-23 11:41:13,224 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-23 11:41:13,225 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-23 11:41:13,227 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-23 11:41:13,229 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-23 11:41:13,231 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-23 11:41:13,232 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-23 11:41:13,233 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-23 11:41:13,235 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-23 11:41:13,236 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-23 11:41:13,236 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-23 11:41:13,237 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-23 11:41:13,238 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-23 11:41:13,238 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-23 11:41:13,239 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-23 11:41:13,240 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-23 11:41:13,240 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-23 11:41:13,241 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-23 11:41:13,241 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-23 11:41:13,241 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-23 11:41:13,243 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-23 11:41:13,243 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-23 11:41:13,244 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-11-23 11:41:13,259 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-23 11:41:13,260 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-23 11:41:13,261 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-23 11:41:13,261 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-23 11:41:13,262 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-23 11:41:13,262 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-23 11:41:13,262 INFO L133 SettingsManager]: * Use SBE=true [2018-11-23 11:41:13,262 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-23 11:41:13,262 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-23 11:41:13,263 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-23 11:41:13,263 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-23 11:41:13,263 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-23 11:41:13,263 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-23 11:41:13,263 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-23 11:41:13,264 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-11-23 11:41:13,264 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-11-23 11:41:13,264 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-23 11:41:13,264 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-23 11:41:13,264 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-23 11:41:13,265 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-23 11:41:13,265 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-23 11:41:13,265 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-23 11:41:13,265 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-23 11:41:13,265 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-23 11:41:13,266 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-23 11:41:13,266 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-23 11:41:13,266 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-23 11:41:13,266 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-23 11:41:13,266 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-11-23 11:41:13,267 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-23 11:41:13,267 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-11-23 11:41:13,267 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-11-23 11:41:13,267 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-23 11:41:13,312 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-23 11:41:13,326 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-23 11:41:13,329 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-23 11:41:13,331 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-23 11:41:13,332 INFO L276 PluginConnector]: CDTParser initialized [2018-11-23 11:41:13,332 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/jm2006_true-unreach-call.c.i.v+cfa-reducer.c [2018-11-23 11:41:13,393 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1822cb352/3bbea6f8923a4ce79790b74f880203ed/FLAG95ed55cf0 [2018-11-23 11:41:13,887 INFO L307 CDTParser]: Found 1 translation units. [2018-11-23 11:41:13,888 INFO L161 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/jm2006_true-unreach-call.c.i.v+cfa-reducer.c [2018-11-23 11:41:13,894 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1822cb352/3bbea6f8923a4ce79790b74f880203ed/FLAG95ed55cf0 [2018-11-23 11:41:14,219 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1822cb352/3bbea6f8923a4ce79790b74f880203ed [2018-11-23 11:41:14,230 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-23 11:41:14,231 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-23 11:41:14,232 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-23 11:41:14,232 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-23 11:41:14,236 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-23 11:41:14,237 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:41:14" (1/1) ... [2018-11-23 11:41:14,240 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71e407d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:41:14, skipping insertion in model container [2018-11-23 11:41:14,240 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:41:14" (1/1) ... [2018-11-23 11:41:14,248 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-23 11:41:14,271 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-23 11:41:14,473 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 11:41:14,481 INFO L191 MainTranslator]: Completed pre-run [2018-11-23 11:41:14,514 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 11:41:14,532 INFO L195 MainTranslator]: Completed translation [2018-11-23 11:41:14,532 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:41:14 WrapperNode [2018-11-23 11:41:14,532 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-23 11:41:14,533 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-23 11:41:14,534 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-23 11:41:14,534 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-23 11:41:14,544 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:41:14" (1/1) ... [2018-11-23 11:41:14,552 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:41:14" (1/1) ... [2018-11-23 11:41:14,560 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-23 11:41:14,561 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-23 11:41:14,561 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-23 11:41:14,561 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-23 11:41:14,572 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:41:14" (1/1) ... [2018-11-23 11:41:14,573 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:41:14" (1/1) ... [2018-11-23 11:41:14,574 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:41:14" (1/1) ... [2018-11-23 11:41:14,574 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:41:14" (1/1) ... [2018-11-23 11:41:14,582 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:41:14" (1/1) ... [2018-11-23 11:41:14,586 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:41:14" (1/1) ... [2018-11-23 11:41:14,588 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:41:14" (1/1) ... [2018-11-23 11:41:14,590 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-23 11:41:14,591 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-23 11:41:14,591 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-23 11:41:14,591 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-23 11:41:14,592 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:41:14" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2018-11-23 11:41:14,738 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-23 11:41:14,739 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-23 11:41:14,739 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-23 11:41:14,739 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-23 11:41:14,739 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-23 11:41:14,739 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-23 11:41:15,241 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-23 11:41:15,241 INFO L280 CfgBuilder]: Removed 0 assue(true) statements. [2018-11-23 11:41:15,242 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:41:15 BoogieIcfgContainer [2018-11-23 11:41:15,242 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-23 11:41:15,243 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-23 11:41:15,243 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-23 11:41:15,246 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-23 11:41:15,247 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 11:41:14" (1/3) ... [2018-11-23 11:41:15,248 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bc3b95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:41:15, skipping insertion in model container [2018-11-23 11:41:15,248 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:41:14" (2/3) ... [2018-11-23 11:41:15,248 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bc3b95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:41:15, skipping insertion in model container [2018-11-23 11:41:15,249 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:41:15" (3/3) ... [2018-11-23 11:41:15,250 INFO L112 eAbstractionObserver]: Analyzing ICFG jm2006_true-unreach-call.c.i.v+cfa-reducer.c [2018-11-23 11:41:15,261 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-23 11:41:15,270 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-23 11:41:15,288 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-23 11:41:15,322 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-23 11:41:15,323 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-23 11:41:15,323 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-23 11:41:15,323 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-23 11:41:15,326 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-23 11:41:15,326 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-23 11:41:15,327 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-23 11:41:15,327 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-23 11:41:15,327 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-23 11:41:15,356 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2018-11-23 11:41:15,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-11-23 11:41:15,364 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 11:41:15,365 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 11:41:15,367 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 11:41:15,373 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 11:41:15,374 INFO L82 PathProgramCache]: Analyzing trace with hash -696314067, now seen corresponding path program 1 times [2018-11-23 11:41:15,378 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-23 11:41:15,379 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 2 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-23 11:41:15,406 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 11:41:15,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 11:41:15,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 11:41:15,479 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 11:41:15,764 INFO L256 TraceCheckUtils]: 0: Hoare triple {20#true} call ULTIMATE.init(); {20#true} is VALID [2018-11-23 11:41:15,768 INFO L273 TraceCheckUtils]: 1: Hoare triple {20#true} ~__return_main~0 := 0bv32;~__return_72~0 := 0bv32; {20#true} is VALID [2018-11-23 11:41:15,769 INFO L273 TraceCheckUtils]: 2: Hoare triple {20#true} assume true; {20#true} is VALID [2018-11-23 11:41:15,769 INFO L268 TraceCheckUtils]: 3: Hoare quadruple {20#true} {20#true} #32#return; {20#true} is VALID [2018-11-23 11:41:15,769 INFO L256 TraceCheckUtils]: 4: Hoare triple {20#true} call #t~ret3 := main(); {20#true} is VALID [2018-11-23 11:41:15,769 INFO L273 TraceCheckUtils]: 5: Hoare triple {20#true} havoc ~main__i~0;havoc ~main__j~0;~main__i~0 := #t~nondet1;havoc #t~nondet1;~main__j~0 := #t~nondet2;havoc #t~nondet2; {20#true} is VALID [2018-11-23 11:41:15,770 INFO L273 TraceCheckUtils]: 6: Hoare triple {20#true} assume !!~bvsge32(~main__i~0, 0bv32); {20#true} is VALID [2018-11-23 11:41:15,772 INFO L273 TraceCheckUtils]: 7: Hoare triple {20#true} assume !!~bvsge32(~main__j~0, 0bv32);~main__x~0 := ~main__i~0;~main__y~0 := ~main__j~0; {46#(and (= main_~main__y~0 main_~main__j~0) (= main_~main__i~0 main_~main__x~0))} is VALID [2018-11-23 11:41:15,786 INFO L273 TraceCheckUtils]: 8: Hoare triple {46#(and (= main_~main__y~0 main_~main__j~0) (= main_~main__i~0 main_~main__x~0))} assume !(0bv32 != ~main__x~0); {50#(and (= main_~main__y~0 main_~main__j~0) (= (_ bv0 32) main_~main__i~0))} is VALID [2018-11-23 11:41:15,800 INFO L273 TraceCheckUtils]: 9: Hoare triple {50#(and (= main_~main__y~0 main_~main__j~0) (= (_ bv0 32) main_~main__i~0))} assume ~main__i~0 == ~main__j~0;havoc ~__tmp_1~0;~__tmp_1~0 := (if 0bv32 == ~main__y~0 then 1bv32 else 0bv32);havoc ~__VERIFIER_assert__cond~0;~__VERIFIER_assert__cond~0 := ~__tmp_1~0; {54#(= (_ bv1 32) main_~__VERIFIER_assert__cond~0)} is VALID [2018-11-23 11:41:15,807 INFO L273 TraceCheckUtils]: 10: Hoare triple {54#(= (_ bv1 32) main_~__VERIFIER_assert__cond~0)} assume 0bv32 == ~__VERIFIER_assert__cond~0; {21#false} is VALID [2018-11-23 11:41:15,808 INFO L273 TraceCheckUtils]: 11: Hoare triple {21#false} assume !false; {21#false} is VALID [2018-11-23 11:41:15,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 11:41:15,811 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-23 11:41:15,819 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 11:41:15,819 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-23 11:41:15,824 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2018-11-23 11:41:15,827 INFO L84 Accepts]: Finished accepts. word is accepted. [2018-11-23 11:41:15,831 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 5 states. [2018-11-23 11:41:15,997 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 12 edges. 12 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2018-11-23 11:41:15,997 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-23 11:41:16,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-23 11:41:16,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-23 11:41:16,012 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 5 states. [2018-11-23 11:41:16,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 11:41:16,654 INFO L93 Difference]: Finished difference Result 30 states and 36 transitions. [2018-11-23 11:41:16,654 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-23 11:41:16,655 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2018-11-23 11:41:16,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 11:41:16,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-11-23 11:41:16,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 36 transitions. [2018-11-23 11:41:16,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-11-23 11:41:16,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 36 transitions. [2018-11-23 11:41:16,673 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 5 states and 36 transitions. [2018-11-23 11:41:16,760 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 36 edges. 36 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2018-11-23 11:41:16,770 INFO L225 Difference]: With dead ends: 30 [2018-11-23 11:41:16,771 INFO L226 Difference]: Without dead ends: 14 [2018-11-23 11:41:16,774 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-11-23 11:41:16,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-11-23 11:41:16,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-11-23 11:41:16,830 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2018-11-23 11:41:16,831 INFO L82 GeneralOperation]: Start isEquivalent. First operand 14 states. Second operand 14 states. [2018-11-23 11:41:16,832 INFO L74 IsIncluded]: Start isIncluded. First operand 14 states. Second operand 14 states. [2018-11-23 11:41:16,832 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 14 states. [2018-11-23 11:41:16,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 11:41:16,836 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2018-11-23 11:41:16,836 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2018-11-23 11:41:16,836 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-23 11:41:16,837 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2018-11-23 11:41:16,837 INFO L74 IsIncluded]: Start isIncluded. First operand 14 states. Second operand 14 states. [2018-11-23 11:41:16,837 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 14 states. [2018-11-23 11:41:16,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 11:41:16,840 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2018-11-23 11:41:16,841 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2018-11-23 11:41:16,841 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-23 11:41:16,841 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2018-11-23 11:41:16,842 INFO L88 GeneralOperation]: Finished isEquivalent. [2018-11-23 11:41:16,842 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2018-11-23 11:41:16,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-11-23 11:41:16,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2018-11-23 11:41:16,846 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2018-11-23 11:41:16,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 11:41:16,846 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2018-11-23 11:41:16,847 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-23 11:41:16,847 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2018-11-23 11:41:16,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-11-23 11:41:16,847 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 11:41:16,848 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 11:41:16,848 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 11:41:16,848 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 11:41:16,849 INFO L82 PathProgramCache]: Analyzing trace with hash -112838900, now seen corresponding path program 1 times [2018-11-23 11:41:16,849 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-23 11:41:16,849 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-23 11:41:16,877 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 11:41:16,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 11:41:16,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 11:41:16,927 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 11:41:17,445 INFO L256 TraceCheckUtils]: 0: Hoare triple {148#true} call ULTIMATE.init(); {148#true} is VALID [2018-11-23 11:41:17,446 INFO L273 TraceCheckUtils]: 1: Hoare triple {148#true} ~__return_main~0 := 0bv32;~__return_72~0 := 0bv32; {148#true} is VALID [2018-11-23 11:41:17,446 INFO L273 TraceCheckUtils]: 2: Hoare triple {148#true} assume true; {148#true} is VALID [2018-11-23 11:41:17,447 INFO L268 TraceCheckUtils]: 3: Hoare quadruple {148#true} {148#true} #32#return; {148#true} is VALID [2018-11-23 11:41:17,447 INFO L256 TraceCheckUtils]: 4: Hoare triple {148#true} call #t~ret3 := main(); {148#true} is VALID [2018-11-23 11:41:17,447 INFO L273 TraceCheckUtils]: 5: Hoare triple {148#true} havoc ~main__i~0;havoc ~main__j~0;~main__i~0 := #t~nondet1;havoc #t~nondet1;~main__j~0 := #t~nondet2;havoc #t~nondet2; {148#true} is VALID [2018-11-23 11:41:17,448 INFO L273 TraceCheckUtils]: 6: Hoare triple {148#true} assume !!~bvsge32(~main__i~0, 0bv32); {148#true} is VALID [2018-11-23 11:41:17,466 INFO L273 TraceCheckUtils]: 7: Hoare triple {148#true} assume !!~bvsge32(~main__j~0, 0bv32);~main__x~0 := ~main__i~0;~main__y~0 := ~main__j~0; {174#(and (= main_~main__y~0 main_~main__j~0) (= main_~main__i~0 main_~main__x~0))} is VALID [2018-11-23 11:41:17,524 INFO L273 TraceCheckUtils]: 8: Hoare triple {174#(and (= main_~main__y~0 main_~main__j~0) (= main_~main__i~0 main_~main__x~0))} assume 0bv32 != ~main__x~0;~main____CPAchecker_TMP_0~0 := ~main__x~0;~main__x~0 := ~bvsub32(~main__x~0, 1bv32);~main____CPAchecker_TMP_1~0 := ~main__y~0;~main__y~0 := ~bvsub32(~main__y~0, 1bv32); {178#(and (= (bvadd main_~main__i~0 (_ bv4294967295 32)) main_~main__x~0) (= (bvadd main_~main__j~0 (_ bv4294967295 32)) main_~main__y~0))} is VALID [2018-11-23 11:41:17,529 INFO L273 TraceCheckUtils]: 9: Hoare triple {178#(and (= (bvadd main_~main__i~0 (_ bv4294967295 32)) main_~main__x~0) (= (bvadd main_~main__j~0 (_ bv4294967295 32)) main_~main__y~0))} assume !(0bv32 != ~main__x~0); {182#(and (= (_ bv1 32) main_~main__i~0) (= (bvadd main_~main__j~0 (_ bv4294967295 32)) main_~main__y~0))} is VALID [2018-11-23 11:41:17,531 INFO L273 TraceCheckUtils]: 10: Hoare triple {182#(and (= (_ bv1 32) main_~main__i~0) (= (bvadd main_~main__j~0 (_ bv4294967295 32)) main_~main__y~0))} assume ~main__i~0 == ~main__j~0;havoc ~__tmp_1~0;~__tmp_1~0 := (if 0bv32 == ~main__y~0 then 1bv32 else 0bv32);havoc ~__VERIFIER_assert__cond~0;~__VERIFIER_assert__cond~0 := ~__tmp_1~0; {186#(= (_ bv1 32) main_~__VERIFIER_assert__cond~0)} is VALID [2018-11-23 11:41:17,532 INFO L273 TraceCheckUtils]: 11: Hoare triple {186#(= (_ bv1 32) main_~__VERIFIER_assert__cond~0)} assume 0bv32 == ~__VERIFIER_assert__cond~0; {149#false} is VALID [2018-11-23 11:41:17,533 INFO L273 TraceCheckUtils]: 12: Hoare triple {149#false} assume !false; {149#false} is VALID [2018-11-23 11:41:17,535 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 11:41:17,535 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 11:41:17,958 INFO L273 TraceCheckUtils]: 12: Hoare triple {149#false} assume !false; {149#false} is VALID [2018-11-23 11:41:17,974 INFO L273 TraceCheckUtils]: 11: Hoare triple {196#(not (= main_~__VERIFIER_assert__cond~0 (_ bv0 32)))} assume 0bv32 == ~__VERIFIER_assert__cond~0; {149#false} is VALID [2018-11-23 11:41:17,977 INFO L273 TraceCheckUtils]: 10: Hoare triple {200#(or (= (_ bv0 32) main_~main__y~0) (not (= main_~main__i~0 main_~main__j~0)))} assume ~main__i~0 == ~main__j~0;havoc ~__tmp_1~0;~__tmp_1~0 := (if 0bv32 == ~main__y~0 then 1bv32 else 0bv32);havoc ~__VERIFIER_assert__cond~0;~__VERIFIER_assert__cond~0 := ~__tmp_1~0; {196#(not (= main_~__VERIFIER_assert__cond~0 (_ bv0 32)))} is VALID [2018-11-23 11:41:17,979 INFO L273 TraceCheckUtils]: 9: Hoare triple {204#(or (= (_ bv0 32) main_~main__y~0) (not (= (_ bv0 32) main_~main__x~0)) (not (= main_~main__i~0 main_~main__j~0)))} assume !(0bv32 != ~main__x~0); {200#(or (= (_ bv0 32) main_~main__y~0) (not (= main_~main__i~0 main_~main__j~0)))} is VALID [2018-11-23 11:41:17,982 INFO L273 TraceCheckUtils]: 8: Hoare triple {208#(or (not (= (bvadd main_~main__x~0 (_ bv4294967295 32)) (_ bv0 32))) (not (= main_~main__i~0 main_~main__j~0)) (= (bvadd main_~main__y~0 (_ bv4294967295 32)) (_ bv0 32)))} assume 0bv32 != ~main__x~0;~main____CPAchecker_TMP_0~0 := ~main__x~0;~main__x~0 := ~bvsub32(~main__x~0, 1bv32);~main____CPAchecker_TMP_1~0 := ~main__y~0;~main__y~0 := ~bvsub32(~main__y~0, 1bv32); {204#(or (= (_ bv0 32) main_~main__y~0) (not (= (_ bv0 32) main_~main__x~0)) (not (= main_~main__i~0 main_~main__j~0)))} is VALID [2018-11-23 11:41:17,983 INFO L273 TraceCheckUtils]: 7: Hoare triple {148#true} assume !!~bvsge32(~main__j~0, 0bv32);~main__x~0 := ~main__i~0;~main__y~0 := ~main__j~0; {208#(or (not (= (bvadd main_~main__x~0 (_ bv4294967295 32)) (_ bv0 32))) (not (= main_~main__i~0 main_~main__j~0)) (= (bvadd main_~main__y~0 (_ bv4294967295 32)) (_ bv0 32)))} is VALID [2018-11-23 11:41:17,983 INFO L273 TraceCheckUtils]: 6: Hoare triple {148#true} assume !!~bvsge32(~main__i~0, 0bv32); {148#true} is VALID [2018-11-23 11:41:17,983 INFO L273 TraceCheckUtils]: 5: Hoare triple {148#true} havoc ~main__i~0;havoc ~main__j~0;~main__i~0 := #t~nondet1;havoc #t~nondet1;~main__j~0 := #t~nondet2;havoc #t~nondet2; {148#true} is VALID [2018-11-23 11:41:17,983 INFO L256 TraceCheckUtils]: 4: Hoare triple {148#true} call #t~ret3 := main(); {148#true} is VALID [2018-11-23 11:41:17,984 INFO L268 TraceCheckUtils]: 3: Hoare quadruple {148#true} {148#true} #32#return; {148#true} is VALID [2018-11-23 11:41:17,984 INFO L273 TraceCheckUtils]: 2: Hoare triple {148#true} assume true; {148#true} is VALID [2018-11-23 11:41:17,984 INFO L273 TraceCheckUtils]: 1: Hoare triple {148#true} ~__return_main~0 := 0bv32;~__return_72~0 := 0bv32; {148#true} is VALID [2018-11-23 11:41:17,984 INFO L256 TraceCheckUtils]: 0: Hoare triple {148#true} call ULTIMATE.init(); {148#true} is VALID [2018-11-23 11:41:17,985 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 11:41:17,987 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 11:41:17,988 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2018-11-23 11:41:17,989 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 13 [2018-11-23 11:41:17,990 INFO L84 Accepts]: Finished accepts. word is accepted. [2018-11-23 11:41:17,990 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 10 states. [2018-11-23 11:41:18,071 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 18 edges. 18 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2018-11-23 11:41:18,071 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-23 11:41:18,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-23 11:41:18,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-11-23 11:41:18,072 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 10 states. [2018-11-23 11:41:18,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 11:41:18,978 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2018-11-23 11:41:18,978 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-23 11:41:18,978 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 13 [2018-11-23 11:41:18,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 11:41:18,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2018-11-23 11:41:18,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 25 transitions. [2018-11-23 11:41:18,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2018-11-23 11:41:18,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 25 transitions. [2018-11-23 11:41:18,984 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 11 states and 25 transitions. [2018-11-23 11:41:19,058 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 25 edges. 25 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2018-11-23 11:41:19,060 INFO L225 Difference]: With dead ends: 23 [2018-11-23 11:41:19,060 INFO L226 Difference]: Without dead ends: 17 [2018-11-23 11:41:19,062 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2018-11-23 11:41:19,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-11-23 11:41:19,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-11-23 11:41:19,079 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2018-11-23 11:41:19,079 INFO L82 GeneralOperation]: Start isEquivalent. First operand 17 states. Second operand 17 states. [2018-11-23 11:41:19,080 INFO L74 IsIncluded]: Start isIncluded. First operand 17 states. Second operand 17 states. [2018-11-23 11:41:19,080 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 17 states. [2018-11-23 11:41:19,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 11:41:19,083 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2018-11-23 11:41:19,083 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2018-11-23 11:41:19,083 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-23 11:41:19,084 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2018-11-23 11:41:19,084 INFO L74 IsIncluded]: Start isIncluded. First operand 17 states. Second operand 17 states. [2018-11-23 11:41:19,084 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 17 states. [2018-11-23 11:41:19,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 11:41:19,086 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2018-11-23 11:41:19,086 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2018-11-23 11:41:19,087 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-23 11:41:19,087 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2018-11-23 11:41:19,087 INFO L88 GeneralOperation]: Finished isEquivalent. [2018-11-23 11:41:19,087 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2018-11-23 11:41:19,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-11-23 11:41:19,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2018-11-23 11:41:19,089 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 13 [2018-11-23 11:41:19,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 11:41:19,089 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2018-11-23 11:41:19,090 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-23 11:41:19,090 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2018-11-23 11:41:19,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-11-23 11:41:19,091 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 11:41:19,091 INFO L402 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 11:41:19,091 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 11:41:19,091 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 11:41:19,092 INFO L82 PathProgramCache]: Analyzing trace with hash -550005011, now seen corresponding path program 2 times [2018-11-23 11:41:19,092 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-23 11:41:19,092 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-23 11:41:19,110 INFO L101 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2018-11-23 11:41:19,156 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-23 11:41:19,157 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 11:41:19,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 11:41:19,172 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 11:41:19,536 INFO L256 TraceCheckUtils]: 0: Hoare triple {337#true} call ULTIMATE.init(); {337#true} is VALID [2018-11-23 11:41:19,536 INFO L273 TraceCheckUtils]: 1: Hoare triple {337#true} ~__return_main~0 := 0bv32;~__return_72~0 := 0bv32; {337#true} is VALID [2018-11-23 11:41:19,537 INFO L273 TraceCheckUtils]: 2: Hoare triple {337#true} assume true; {337#true} is VALID [2018-11-23 11:41:19,537 INFO L268 TraceCheckUtils]: 3: Hoare quadruple {337#true} {337#true} #32#return; {337#true} is VALID [2018-11-23 11:41:19,538 INFO L256 TraceCheckUtils]: 4: Hoare triple {337#true} call #t~ret3 := main(); {337#true} is VALID [2018-11-23 11:41:19,538 INFO L273 TraceCheckUtils]: 5: Hoare triple {337#true} havoc ~main__i~0;havoc ~main__j~0;~main__i~0 := #t~nondet1;havoc #t~nondet1;~main__j~0 := #t~nondet2;havoc #t~nondet2; {337#true} is VALID [2018-11-23 11:41:19,539 INFO L273 TraceCheckUtils]: 6: Hoare triple {337#true} assume !!~bvsge32(~main__i~0, 0bv32); {337#true} is VALID [2018-11-23 11:41:19,540 INFO L273 TraceCheckUtils]: 7: Hoare triple {337#true} assume !!~bvsge32(~main__j~0, 0bv32);~main__x~0 := ~main__i~0;~main__y~0 := ~main__j~0; {363#(and (= main_~main__y~0 main_~main__j~0) (= main_~main__i~0 main_~main__x~0))} is VALID [2018-11-23 11:41:19,589 INFO L273 TraceCheckUtils]: 8: Hoare triple {363#(and (= main_~main__y~0 main_~main__j~0) (= main_~main__i~0 main_~main__x~0))} assume 0bv32 != ~main__x~0;~main____CPAchecker_TMP_0~0 := ~main__x~0;~main__x~0 := ~bvsub32(~main__x~0, 1bv32);~main____CPAchecker_TMP_1~0 := ~main__y~0;~main__y~0 := ~bvsub32(~main__y~0, 1bv32); {367#(and (= (bvadd main_~main__i~0 (_ bv4294967295 32)) main_~main__x~0) (= (bvadd main_~main__j~0 (_ bv4294967295 32)) main_~main__y~0))} is VALID [2018-11-23 11:41:19,635 INFO L273 TraceCheckUtils]: 9: Hoare triple {367#(and (= (bvadd main_~main__i~0 (_ bv4294967295 32)) main_~main__x~0) (= (bvadd main_~main__j~0 (_ bv4294967295 32)) main_~main__y~0))} assume 0bv32 != ~main__x~0;~main____CPAchecker_TMP_0~0 := ~main__x~0;~main__x~0 := ~bvsub32(~main__x~0, 1bv32);~main____CPAchecker_TMP_1~0 := ~main__y~0;~main__y~0 := ~bvsub32(~main__y~0, 1bv32); {371#(and (= (bvadd main_~main__y~0 (_ bv2 32)) main_~main__j~0) (= (bvadd main_~main__i~0 (_ bv4294967294 32)) main_~main__x~0))} is VALID [2018-11-23 11:41:19,686 INFO L273 TraceCheckUtils]: 10: Hoare triple {371#(and (= (bvadd main_~main__y~0 (_ bv2 32)) main_~main__j~0) (= (bvadd main_~main__i~0 (_ bv4294967294 32)) main_~main__x~0))} assume 0bv32 != ~main__x~0;~main____CPAchecker_TMP_0~0 := ~main__x~0;~main__x~0 := ~bvsub32(~main__x~0, 1bv32);~main____CPAchecker_TMP_1~0 := ~main__y~0;~main__y~0 := ~bvsub32(~main__y~0, 1bv32); {375#(and (= (bvadd main_~main__j~0 (_ bv4294967293 32)) main_~main__y~0) (= (bvadd main_~main__i~0 (_ bv4294967293 32)) main_~main__x~0))} is VALID [2018-11-23 11:41:19,734 INFO L273 TraceCheckUtils]: 11: Hoare triple {375#(and (= (bvadd main_~main__j~0 (_ bv4294967293 32)) main_~main__y~0) (= (bvadd main_~main__i~0 (_ bv4294967293 32)) main_~main__x~0))} assume 0bv32 != ~main__x~0;~main____CPAchecker_TMP_0~0 := ~main__x~0;~main__x~0 := ~bvsub32(~main__x~0, 1bv32);~main____CPAchecker_TMP_1~0 := ~main__y~0;~main__y~0 := ~bvsub32(~main__y~0, 1bv32); {379#(and (= (bvadd main_~main__y~0 (_ bv4 32)) main_~main__j~0) (= (bvadd main_~main__i~0 (_ bv4294967292 32)) main_~main__x~0))} is VALID [2018-11-23 11:41:19,736 INFO L273 TraceCheckUtils]: 12: Hoare triple {379#(and (= (bvadd main_~main__y~0 (_ bv4 32)) main_~main__j~0) (= (bvadd main_~main__i~0 (_ bv4294967292 32)) main_~main__x~0))} assume !(0bv32 != ~main__x~0); {383#(and (= (bvadd main_~main__y~0 (_ bv4 32)) main_~main__j~0) (= (_ bv4 32) main_~main__i~0))} is VALID [2018-11-23 11:41:19,741 INFO L273 TraceCheckUtils]: 13: Hoare triple {383#(and (= (bvadd main_~main__y~0 (_ bv4 32)) main_~main__j~0) (= (_ bv4 32) main_~main__i~0))} assume ~main__i~0 == ~main__j~0;havoc ~__tmp_1~0;~__tmp_1~0 := (if 0bv32 == ~main__y~0 then 1bv32 else 0bv32);havoc ~__VERIFIER_assert__cond~0;~__VERIFIER_assert__cond~0 := ~__tmp_1~0; {387#(= (_ bv1 32) main_~__VERIFIER_assert__cond~0)} is VALID [2018-11-23 11:41:19,742 INFO L273 TraceCheckUtils]: 14: Hoare triple {387#(= (_ bv1 32) main_~__VERIFIER_assert__cond~0)} assume 0bv32 == ~__VERIFIER_assert__cond~0; {338#false} is VALID [2018-11-23 11:41:19,742 INFO L273 TraceCheckUtils]: 15: Hoare triple {338#false} assume !false; {338#false} is VALID [2018-11-23 11:41:19,743 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 11:41:19,743 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 11:41:20,209 INFO L273 TraceCheckUtils]: 15: Hoare triple {338#false} assume !false; {338#false} is VALID [2018-11-23 11:41:20,211 INFO L273 TraceCheckUtils]: 14: Hoare triple {397#(not (= main_~__VERIFIER_assert__cond~0 (_ bv0 32)))} assume 0bv32 == ~__VERIFIER_assert__cond~0; {338#false} is VALID [2018-11-23 11:41:20,212 INFO L273 TraceCheckUtils]: 13: Hoare triple {401#(or (= (_ bv0 32) main_~main__y~0) (not (= main_~main__i~0 main_~main__j~0)))} assume ~main__i~0 == ~main__j~0;havoc ~__tmp_1~0;~__tmp_1~0 := (if 0bv32 == ~main__y~0 then 1bv32 else 0bv32);havoc ~__VERIFIER_assert__cond~0;~__VERIFIER_assert__cond~0 := ~__tmp_1~0; {397#(not (= main_~__VERIFIER_assert__cond~0 (_ bv0 32)))} is VALID [2018-11-23 11:41:20,213 INFO L273 TraceCheckUtils]: 12: Hoare triple {405#(or (= (_ bv0 32) main_~main__y~0) (not (= (_ bv0 32) main_~main__x~0)) (not (= main_~main__i~0 main_~main__j~0)))} assume !(0bv32 != ~main__x~0); {401#(or (= (_ bv0 32) main_~main__y~0) (not (= main_~main__i~0 main_~main__j~0)))} is VALID [2018-11-23 11:41:20,215 INFO L273 TraceCheckUtils]: 11: Hoare triple {409#(or (not (= (bvadd main_~main__x~0 (_ bv4294967295 32)) (_ bv0 32))) (not (= main_~main__i~0 main_~main__j~0)) (= (bvadd main_~main__y~0 (_ bv4294967295 32)) (_ bv0 32)))} assume 0bv32 != ~main__x~0;~main____CPAchecker_TMP_0~0 := ~main__x~0;~main__x~0 := ~bvsub32(~main__x~0, 1bv32);~main____CPAchecker_TMP_1~0 := ~main__y~0;~main__y~0 := ~bvsub32(~main__y~0, 1bv32); {405#(or (= (_ bv0 32) main_~main__y~0) (not (= (_ bv0 32) main_~main__x~0)) (not (= main_~main__i~0 main_~main__j~0)))} is VALID [2018-11-23 11:41:20,217 INFO L273 TraceCheckUtils]: 10: Hoare triple {413#(or (= (bvadd main_~main__y~0 (_ bv4294967294 32)) (_ bv0 32)) (not (= (bvadd main_~main__x~0 (_ bv4294967294 32)) (_ bv0 32))) (not (= main_~main__i~0 main_~main__j~0)))} assume 0bv32 != ~main__x~0;~main____CPAchecker_TMP_0~0 := ~main__x~0;~main__x~0 := ~bvsub32(~main__x~0, 1bv32);~main____CPAchecker_TMP_1~0 := ~main__y~0;~main__y~0 := ~bvsub32(~main__y~0, 1bv32); {409#(or (not (= (bvadd main_~main__x~0 (_ bv4294967295 32)) (_ bv0 32))) (not (= main_~main__i~0 main_~main__j~0)) (= (bvadd main_~main__y~0 (_ bv4294967295 32)) (_ bv0 32)))} is VALID [2018-11-23 11:41:20,219 INFO L273 TraceCheckUtils]: 9: Hoare triple {417#(or (not (= (bvadd main_~main__x~0 (_ bv4294967293 32)) (_ bv0 32))) (= (bvadd main_~main__y~0 (_ bv4294967293 32)) (_ bv0 32)) (not (= main_~main__i~0 main_~main__j~0)))} assume 0bv32 != ~main__x~0;~main____CPAchecker_TMP_0~0 := ~main__x~0;~main__x~0 := ~bvsub32(~main__x~0, 1bv32);~main____CPAchecker_TMP_1~0 := ~main__y~0;~main__y~0 := ~bvsub32(~main__y~0, 1bv32); {413#(or (= (bvadd main_~main__y~0 (_ bv4294967294 32)) (_ bv0 32)) (not (= (bvadd main_~main__x~0 (_ bv4294967294 32)) (_ bv0 32))) (not (= main_~main__i~0 main_~main__j~0)))} is VALID [2018-11-23 11:41:20,221 INFO L273 TraceCheckUtils]: 8: Hoare triple {421#(or (= (bvadd main_~main__y~0 (_ bv4294967292 32)) (_ bv0 32)) (not (= main_~main__i~0 main_~main__j~0)) (not (= (bvadd main_~main__x~0 (_ bv4294967292 32)) (_ bv0 32))))} assume 0bv32 != ~main__x~0;~main____CPAchecker_TMP_0~0 := ~main__x~0;~main__x~0 := ~bvsub32(~main__x~0, 1bv32);~main____CPAchecker_TMP_1~0 := ~main__y~0;~main__y~0 := ~bvsub32(~main__y~0, 1bv32); {417#(or (not (= (bvadd main_~main__x~0 (_ bv4294967293 32)) (_ bv0 32))) (= (bvadd main_~main__y~0 (_ bv4294967293 32)) (_ bv0 32)) (not (= main_~main__i~0 main_~main__j~0)))} is VALID [2018-11-23 11:41:20,224 INFO L273 TraceCheckUtils]: 7: Hoare triple {337#true} assume !!~bvsge32(~main__j~0, 0bv32);~main__x~0 := ~main__i~0;~main__y~0 := ~main__j~0; {421#(or (= (bvadd main_~main__y~0 (_ bv4294967292 32)) (_ bv0 32)) (not (= main_~main__i~0 main_~main__j~0)) (not (= (bvadd main_~main__x~0 (_ bv4294967292 32)) (_ bv0 32))))} is VALID [2018-11-23 11:41:20,224 INFO L273 TraceCheckUtils]: 6: Hoare triple {337#true} assume !!~bvsge32(~main__i~0, 0bv32); {337#true} is VALID [2018-11-23 11:41:20,225 INFO L273 TraceCheckUtils]: 5: Hoare triple {337#true} havoc ~main__i~0;havoc ~main__j~0;~main__i~0 := #t~nondet1;havoc #t~nondet1;~main__j~0 := #t~nondet2;havoc #t~nondet2; {337#true} is VALID [2018-11-23 11:41:20,225 INFO L256 TraceCheckUtils]: 4: Hoare triple {337#true} call #t~ret3 := main(); {337#true} is VALID [2018-11-23 11:41:20,225 INFO L268 TraceCheckUtils]: 3: Hoare quadruple {337#true} {337#true} #32#return; {337#true} is VALID [2018-11-23 11:41:20,226 INFO L273 TraceCheckUtils]: 2: Hoare triple {337#true} assume true; {337#true} is VALID [2018-11-23 11:41:20,226 INFO L273 TraceCheckUtils]: 1: Hoare triple {337#true} ~__return_main~0 := 0bv32;~__return_72~0 := 0bv32; {337#true} is VALID [2018-11-23 11:41:20,226 INFO L256 TraceCheckUtils]: 0: Hoare triple {337#true} call ULTIMATE.init(); {337#true} is VALID [2018-11-23 11:41:20,227 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 11:41:20,229 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 11:41:20,229 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2018-11-23 11:41:20,230 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 16 [2018-11-23 11:41:20,230 INFO L84 Accepts]: Finished accepts. word is accepted. [2018-11-23 11:41:20,231 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 16 states. [2018-11-23 11:41:20,499 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 24 edges. 24 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2018-11-23 11:41:20,500 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-11-23 11:41:20,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-11-23 11:41:20,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2018-11-23 11:41:20,501 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 16 states. [2018-11-23 11:41:21,846 WARN L180 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 30 [2018-11-23 11:41:22,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 11:41:22,504 INFO L93 Difference]: Finished difference Result 29 states and 34 transitions. [2018-11-23 11:41:22,504 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-11-23 11:41:22,504 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 16 [2018-11-23 11:41:22,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 11:41:22,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-11-23 11:41:22,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 34 transitions. [2018-11-23 11:41:22,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-11-23 11:41:22,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 34 transitions. [2018-11-23 11:41:22,510 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 17 states and 34 transitions. [2018-11-23 11:41:22,804 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 34 edges. 34 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2018-11-23 11:41:22,805 INFO L225 Difference]: With dead ends: 29 [2018-11-23 11:41:22,805 INFO L226 Difference]: Without dead ends: 23 [2018-11-23 11:41:22,806 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=183, Invalid=417, Unknown=0, NotChecked=0, Total=600 [2018-11-23 11:41:22,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-11-23 11:41:22,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-11-23 11:41:22,864 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2018-11-23 11:41:22,864 INFO L82 GeneralOperation]: Start isEquivalent. First operand 23 states. Second operand 23 states. [2018-11-23 11:41:22,864 INFO L74 IsIncluded]: Start isIncluded. First operand 23 states. Second operand 23 states. [2018-11-23 11:41:22,865 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 23 states. [2018-11-23 11:41:22,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 11:41:22,868 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2018-11-23 11:41:22,868 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2018-11-23 11:41:22,869 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-23 11:41:22,869 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2018-11-23 11:41:22,869 INFO L74 IsIncluded]: Start isIncluded. First operand 23 states. Second operand 23 states. [2018-11-23 11:41:22,869 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 23 states. [2018-11-23 11:41:22,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 11:41:22,871 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2018-11-23 11:41:22,871 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2018-11-23 11:41:22,872 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-23 11:41:22,872 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2018-11-23 11:41:22,872 INFO L88 GeneralOperation]: Finished isEquivalent. [2018-11-23 11:41:22,872 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2018-11-23 11:41:22,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-11-23 11:41:22,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2018-11-23 11:41:22,875 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 16 [2018-11-23 11:41:22,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 11:41:22,875 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2018-11-23 11:41:22,875 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-11-23 11:41:22,875 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2018-11-23 11:41:22,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-11-23 11:41:22,876 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 11:41:22,876 INFO L402 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 11:41:22,877 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 11:41:22,877 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 11:41:22,877 INFO L82 PathProgramCache]: Analyzing trace with hash 1858359949, now seen corresponding path program 3 times [2018-11-23 11:41:22,878 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-23 11:41:22,878 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-23 11:41:22,898 INFO L101 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2018-11-23 11:41:23,050 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2018-11-23 11:41:23,050 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 11:41:23,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 11:41:23,082 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 11:41:23,850 INFO L256 TraceCheckUtils]: 0: Hoare triple {594#true} call ULTIMATE.init(); {594#true} is VALID [2018-11-23 11:41:23,850 INFO L273 TraceCheckUtils]: 1: Hoare triple {594#true} ~__return_main~0 := 0bv32;~__return_72~0 := 0bv32; {594#true} is VALID [2018-11-23 11:41:23,851 INFO L273 TraceCheckUtils]: 2: Hoare triple {594#true} assume true; {594#true} is VALID [2018-11-23 11:41:23,851 INFO L268 TraceCheckUtils]: 3: Hoare quadruple {594#true} {594#true} #32#return; {594#true} is VALID [2018-11-23 11:41:23,851 INFO L256 TraceCheckUtils]: 4: Hoare triple {594#true} call #t~ret3 := main(); {594#true} is VALID [2018-11-23 11:41:23,851 INFO L273 TraceCheckUtils]: 5: Hoare triple {594#true} havoc ~main__i~0;havoc ~main__j~0;~main__i~0 := #t~nondet1;havoc #t~nondet1;~main__j~0 := #t~nondet2;havoc #t~nondet2; {594#true} is VALID [2018-11-23 11:41:23,852 INFO L273 TraceCheckUtils]: 6: Hoare triple {594#true} assume !!~bvsge32(~main__i~0, 0bv32); {594#true} is VALID [2018-11-23 11:41:23,852 INFO L273 TraceCheckUtils]: 7: Hoare triple {594#true} assume !!~bvsge32(~main__j~0, 0bv32);~main__x~0 := ~main__i~0;~main__y~0 := ~main__j~0; {620#(and (= main_~main__y~0 main_~main__j~0) (= main_~main__i~0 main_~main__x~0))} is VALID [2018-11-23 11:41:23,887 INFO L273 TraceCheckUtils]: 8: Hoare triple {620#(and (= main_~main__y~0 main_~main__j~0) (= main_~main__i~0 main_~main__x~0))} assume 0bv32 != ~main__x~0;~main____CPAchecker_TMP_0~0 := ~main__x~0;~main__x~0 := ~bvsub32(~main__x~0, 1bv32);~main____CPAchecker_TMP_1~0 := ~main__y~0;~main__y~0 := ~bvsub32(~main__y~0, 1bv32); {624#(and (= (bvadd main_~main__i~0 (_ bv4294967295 32)) main_~main__x~0) (= (bvadd main_~main__j~0 (_ bv4294967295 32)) main_~main__y~0))} is VALID [2018-11-23 11:41:23,936 INFO L273 TraceCheckUtils]: 9: Hoare triple {624#(and (= (bvadd main_~main__i~0 (_ bv4294967295 32)) main_~main__x~0) (= (bvadd main_~main__j~0 (_ bv4294967295 32)) main_~main__y~0))} assume 0bv32 != ~main__x~0;~main____CPAchecker_TMP_0~0 := ~main__x~0;~main__x~0 := ~bvsub32(~main__x~0, 1bv32);~main____CPAchecker_TMP_1~0 := ~main__y~0;~main__y~0 := ~bvsub32(~main__y~0, 1bv32); {628#(and (= (bvadd main_~main__y~0 (_ bv2 32)) main_~main__j~0) (= (bvadd main_~main__i~0 (_ bv4294967294 32)) main_~main__x~0))} is VALID [2018-11-23 11:41:23,994 INFO L273 TraceCheckUtils]: 10: Hoare triple {628#(and (= (bvadd main_~main__y~0 (_ bv2 32)) main_~main__j~0) (= (bvadd main_~main__i~0 (_ bv4294967294 32)) main_~main__x~0))} assume 0bv32 != ~main__x~0;~main____CPAchecker_TMP_0~0 := ~main__x~0;~main__x~0 := ~bvsub32(~main__x~0, 1bv32);~main____CPAchecker_TMP_1~0 := ~main__y~0;~main__y~0 := ~bvsub32(~main__y~0, 1bv32); {632#(and (= (bvadd main_~main__y~0 (_ bv3 32)) main_~main__j~0) (= (bvadd main_~main__i~0 (_ bv4294967293 32)) main_~main__x~0))} is VALID [2018-11-23 11:41:24,039 INFO L273 TraceCheckUtils]: 11: Hoare triple {632#(and (= (bvadd main_~main__y~0 (_ bv3 32)) main_~main__j~0) (= (bvadd main_~main__i~0 (_ bv4294967293 32)) main_~main__x~0))} assume 0bv32 != ~main__x~0;~main____CPAchecker_TMP_0~0 := ~main__x~0;~main__x~0 := ~bvsub32(~main__x~0, 1bv32);~main____CPAchecker_TMP_1~0 := ~main__y~0;~main__y~0 := ~bvsub32(~main__y~0, 1bv32); {636#(and (= (bvadd main_~main__y~0 (_ bv4 32)) main_~main__j~0) (= (bvadd main_~main__i~0 (_ bv4294967292 32)) main_~main__x~0))} is VALID [2018-11-23 11:41:24,098 INFO L273 TraceCheckUtils]: 12: Hoare triple {636#(and (= (bvadd main_~main__y~0 (_ bv4 32)) main_~main__j~0) (= (bvadd main_~main__i~0 (_ bv4294967292 32)) main_~main__x~0))} assume 0bv32 != ~main__x~0;~main____CPAchecker_TMP_0~0 := ~main__x~0;~main__x~0 := ~bvsub32(~main__x~0, 1bv32);~main____CPAchecker_TMP_1~0 := ~main__y~0;~main__y~0 := ~bvsub32(~main__y~0, 1bv32); {640#(and (= (bvadd main_~main__i~0 (_ bv4294967291 32)) main_~main__x~0) (= (bvadd main_~main__y~0 (_ bv5 32)) main_~main__j~0))} is VALID [2018-11-23 11:41:24,151 INFO L273 TraceCheckUtils]: 13: Hoare triple {640#(and (= (bvadd main_~main__i~0 (_ bv4294967291 32)) main_~main__x~0) (= (bvadd main_~main__y~0 (_ bv5 32)) main_~main__j~0))} assume 0bv32 != ~main__x~0;~main____CPAchecker_TMP_0~0 := ~main__x~0;~main__x~0 := ~bvsub32(~main__x~0, 1bv32);~main____CPAchecker_TMP_1~0 := ~main__y~0;~main__y~0 := ~bvsub32(~main__y~0, 1bv32); {644#(and (= (bvadd main_~main__j~0 (_ bv4294967290 32)) main_~main__y~0) (= (bvadd main_~main__i~0 (_ bv4294967290 32)) main_~main__x~0))} is VALID [2018-11-23 11:41:24,207 INFO L273 TraceCheckUtils]: 14: Hoare triple {644#(and (= (bvadd main_~main__j~0 (_ bv4294967290 32)) main_~main__y~0) (= (bvadd main_~main__i~0 (_ bv4294967290 32)) main_~main__x~0))} assume 0bv32 != ~main__x~0;~main____CPAchecker_TMP_0~0 := ~main__x~0;~main__x~0 := ~bvsub32(~main__x~0, 1bv32);~main____CPAchecker_TMP_1~0 := ~main__y~0;~main__y~0 := ~bvsub32(~main__y~0, 1bv32); {648#(and (= (bvadd main_~main__i~0 (_ bv4294967289 32)) main_~main__x~0) (= (bvadd main_~main__j~0 (_ bv4294967289 32)) main_~main__y~0))} is VALID [2018-11-23 11:41:24,296 INFO L273 TraceCheckUtils]: 15: Hoare triple {648#(and (= (bvadd main_~main__i~0 (_ bv4294967289 32)) main_~main__x~0) (= (bvadd main_~main__j~0 (_ bv4294967289 32)) main_~main__y~0))} assume 0bv32 != ~main__x~0;~main____CPAchecker_TMP_0~0 := ~main__x~0;~main__x~0 := ~bvsub32(~main__x~0, 1bv32);~main____CPAchecker_TMP_1~0 := ~main__y~0;~main__y~0 := ~bvsub32(~main__y~0, 1bv32); {652#(and (= (bvadd main_~main__i~0 (_ bv4294967288 32)) main_~main__x~0) (= (bvadd main_~main__j~0 (_ bv4294967288 32)) main_~main__y~0))} is VALID [2018-11-23 11:41:24,336 INFO L273 TraceCheckUtils]: 16: Hoare triple {652#(and (= (bvadd main_~main__i~0 (_ bv4294967288 32)) main_~main__x~0) (= (bvadd main_~main__j~0 (_ bv4294967288 32)) main_~main__y~0))} assume 0bv32 != ~main__x~0;~main____CPAchecker_TMP_0~0 := ~main__x~0;~main__x~0 := ~bvsub32(~main__x~0, 1bv32);~main____CPAchecker_TMP_1~0 := ~main__y~0;~main__y~0 := ~bvsub32(~main__y~0, 1bv32); {656#(and (= (bvadd main_~main__j~0 (_ bv4294967287 32)) main_~main__y~0) (= (bvadd main_~main__i~0 (_ bv4294967287 32)) main_~main__x~0))} is VALID [2018-11-23 11:41:24,394 INFO L273 TraceCheckUtils]: 17: Hoare triple {656#(and (= (bvadd main_~main__j~0 (_ bv4294967287 32)) main_~main__y~0) (= (bvadd main_~main__i~0 (_ bv4294967287 32)) main_~main__x~0))} assume 0bv32 != ~main__x~0;~main____CPAchecker_TMP_0~0 := ~main__x~0;~main__x~0 := ~bvsub32(~main__x~0, 1bv32);~main____CPAchecker_TMP_1~0 := ~main__y~0;~main__y~0 := ~bvsub32(~main__y~0, 1bv32); {660#(and (= (bvadd main_~main__j~0 (_ bv4294967286 32)) main_~main__y~0) (= (bvadd main_~main__i~0 (_ bv4294967286 32)) main_~main__x~0))} is VALID [2018-11-23 11:41:24,396 INFO L273 TraceCheckUtils]: 18: Hoare triple {660#(and (= (bvadd main_~main__j~0 (_ bv4294967286 32)) main_~main__y~0) (= (bvadd main_~main__i~0 (_ bv4294967286 32)) main_~main__x~0))} assume !(0bv32 != ~main__x~0); {664#(and (= (bvadd main_~main__j~0 (_ bv4294967286 32)) main_~main__y~0) (= (_ bv10 32) main_~main__i~0))} is VALID [2018-11-23 11:41:24,397 INFO L273 TraceCheckUtils]: 19: Hoare triple {664#(and (= (bvadd main_~main__j~0 (_ bv4294967286 32)) main_~main__y~0) (= (_ bv10 32) main_~main__i~0))} assume ~main__i~0 == ~main__j~0;havoc ~__tmp_1~0;~__tmp_1~0 := (if 0bv32 == ~main__y~0 then 1bv32 else 0bv32);havoc ~__VERIFIER_assert__cond~0;~__VERIFIER_assert__cond~0 := ~__tmp_1~0; {668#(= (_ bv1 32) main_~__VERIFIER_assert__cond~0)} is VALID [2018-11-23 11:41:24,398 INFO L273 TraceCheckUtils]: 20: Hoare triple {668#(= (_ bv1 32) main_~__VERIFIER_assert__cond~0)} assume 0bv32 == ~__VERIFIER_assert__cond~0; {595#false} is VALID [2018-11-23 11:41:24,398 INFO L273 TraceCheckUtils]: 21: Hoare triple {595#false} assume !false; {595#false} is VALID [2018-11-23 11:41:24,401 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 11:41:24,401 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 11:41:25,458 INFO L273 TraceCheckUtils]: 21: Hoare triple {595#false} assume !false; {595#false} is VALID [2018-11-23 11:41:25,459 INFO L273 TraceCheckUtils]: 20: Hoare triple {678#(not (= main_~__VERIFIER_assert__cond~0 (_ bv0 32)))} assume 0bv32 == ~__VERIFIER_assert__cond~0; {595#false} is VALID [2018-11-23 11:41:25,460 INFO L273 TraceCheckUtils]: 19: Hoare triple {682#(or (= (_ bv0 32) main_~main__y~0) (not (= main_~main__i~0 main_~main__j~0)))} assume ~main__i~0 == ~main__j~0;havoc ~__tmp_1~0;~__tmp_1~0 := (if 0bv32 == ~main__y~0 then 1bv32 else 0bv32);havoc ~__VERIFIER_assert__cond~0;~__VERIFIER_assert__cond~0 := ~__tmp_1~0; {678#(not (= main_~__VERIFIER_assert__cond~0 (_ bv0 32)))} is VALID [2018-11-23 11:41:25,461 INFO L273 TraceCheckUtils]: 18: Hoare triple {686#(or (= (_ bv0 32) main_~main__y~0) (not (= (_ bv0 32) main_~main__x~0)) (not (= main_~main__i~0 main_~main__j~0)))} assume !(0bv32 != ~main__x~0); {682#(or (= (_ bv0 32) main_~main__y~0) (not (= main_~main__i~0 main_~main__j~0)))} is VALID [2018-11-23 11:41:25,463 INFO L273 TraceCheckUtils]: 17: Hoare triple {690#(or (not (= (bvadd main_~main__x~0 (_ bv4294967295 32)) (_ bv0 32))) (not (= main_~main__i~0 main_~main__j~0)) (= (bvadd main_~main__y~0 (_ bv4294967295 32)) (_ bv0 32)))} assume 0bv32 != ~main__x~0;~main____CPAchecker_TMP_0~0 := ~main__x~0;~main__x~0 := ~bvsub32(~main__x~0, 1bv32);~main____CPAchecker_TMP_1~0 := ~main__y~0;~main__y~0 := ~bvsub32(~main__y~0, 1bv32); {686#(or (= (_ bv0 32) main_~main__y~0) (not (= (_ bv0 32) main_~main__x~0)) (not (= main_~main__i~0 main_~main__j~0)))} is VALID [2018-11-23 11:41:25,465 INFO L273 TraceCheckUtils]: 16: Hoare triple {694#(or (= (bvadd main_~main__y~0 (_ bv4294967294 32)) (_ bv0 32)) (not (= (bvadd main_~main__x~0 (_ bv4294967294 32)) (_ bv0 32))) (not (= main_~main__i~0 main_~main__j~0)))} assume 0bv32 != ~main__x~0;~main____CPAchecker_TMP_0~0 := ~main__x~0;~main__x~0 := ~bvsub32(~main__x~0, 1bv32);~main____CPAchecker_TMP_1~0 := ~main__y~0;~main__y~0 := ~bvsub32(~main__y~0, 1bv32); {690#(or (not (= (bvadd main_~main__x~0 (_ bv4294967295 32)) (_ bv0 32))) (not (= main_~main__i~0 main_~main__j~0)) (= (bvadd main_~main__y~0 (_ bv4294967295 32)) (_ bv0 32)))} is VALID [2018-11-23 11:41:25,468 INFO L273 TraceCheckUtils]: 15: Hoare triple {698#(or (not (= (bvadd main_~main__x~0 (_ bv4294967293 32)) (_ bv0 32))) (= (bvadd main_~main__y~0 (_ bv4294967293 32)) (_ bv0 32)) (not (= main_~main__i~0 main_~main__j~0)))} assume 0bv32 != ~main__x~0;~main____CPAchecker_TMP_0~0 := ~main__x~0;~main__x~0 := ~bvsub32(~main__x~0, 1bv32);~main____CPAchecker_TMP_1~0 := ~main__y~0;~main__y~0 := ~bvsub32(~main__y~0, 1bv32); {694#(or (= (bvadd main_~main__y~0 (_ bv4294967294 32)) (_ bv0 32)) (not (= (bvadd main_~main__x~0 (_ bv4294967294 32)) (_ bv0 32))) (not (= main_~main__i~0 main_~main__j~0)))} is VALID [2018-11-23 11:41:25,471 INFO L273 TraceCheckUtils]: 14: Hoare triple {702#(or (= (bvadd main_~main__y~0 (_ bv4294967292 32)) (_ bv0 32)) (not (= main_~main__i~0 main_~main__j~0)) (not (= (bvadd main_~main__x~0 (_ bv4294967292 32)) (_ bv0 32))))} assume 0bv32 != ~main__x~0;~main____CPAchecker_TMP_0~0 := ~main__x~0;~main__x~0 := ~bvsub32(~main__x~0, 1bv32);~main____CPAchecker_TMP_1~0 := ~main__y~0;~main__y~0 := ~bvsub32(~main__y~0, 1bv32); {698#(or (not (= (bvadd main_~main__x~0 (_ bv4294967293 32)) (_ bv0 32))) (= (bvadd main_~main__y~0 (_ bv4294967293 32)) (_ bv0 32)) (not (= main_~main__i~0 main_~main__j~0)))} is VALID [2018-11-23 11:41:25,474 INFO L273 TraceCheckUtils]: 13: Hoare triple {706#(or (not (= (bvadd main_~main__x~0 (_ bv4294967291 32)) (_ bv0 32))) (not (= main_~main__i~0 main_~main__j~0)) (= (bvadd main_~main__y~0 (_ bv4294967291 32)) (_ bv0 32)))} assume 0bv32 != ~main__x~0;~main____CPAchecker_TMP_0~0 := ~main__x~0;~main__x~0 := ~bvsub32(~main__x~0, 1bv32);~main____CPAchecker_TMP_1~0 := ~main__y~0;~main__y~0 := ~bvsub32(~main__y~0, 1bv32); {702#(or (= (bvadd main_~main__y~0 (_ bv4294967292 32)) (_ bv0 32)) (not (= main_~main__i~0 main_~main__j~0)) (not (= (bvadd main_~main__x~0 (_ bv4294967292 32)) (_ bv0 32))))} is VALID [2018-11-23 11:41:25,476 INFO L273 TraceCheckUtils]: 12: Hoare triple {710#(or (not (= (bvadd main_~main__x~0 (_ bv4294967290 32)) (_ bv0 32))) (not (= main_~main__i~0 main_~main__j~0)) (= (_ bv6 32) main_~main__y~0))} assume 0bv32 != ~main__x~0;~main____CPAchecker_TMP_0~0 := ~main__x~0;~main__x~0 := ~bvsub32(~main__x~0, 1bv32);~main____CPAchecker_TMP_1~0 := ~main__y~0;~main__y~0 := ~bvsub32(~main__y~0, 1bv32); {706#(or (not (= (bvadd main_~main__x~0 (_ bv4294967291 32)) (_ bv0 32))) (not (= main_~main__i~0 main_~main__j~0)) (= (bvadd main_~main__y~0 (_ bv4294967291 32)) (_ bv0 32)))} is VALID [2018-11-23 11:41:25,478 INFO L273 TraceCheckUtils]: 11: Hoare triple {714#(or (= (bvadd main_~main__y~0 (_ bv4294967289 32)) (_ bv0 32)) (not (= (bvadd main_~main__x~0 (_ bv4294967289 32)) (_ bv0 32))) (not (= main_~main__i~0 main_~main__j~0)))} assume 0bv32 != ~main__x~0;~main____CPAchecker_TMP_0~0 := ~main__x~0;~main__x~0 := ~bvsub32(~main__x~0, 1bv32);~main____CPAchecker_TMP_1~0 := ~main__y~0;~main__y~0 := ~bvsub32(~main__y~0, 1bv32); {710#(or (not (= (bvadd main_~main__x~0 (_ bv4294967290 32)) (_ bv0 32))) (not (= main_~main__i~0 main_~main__j~0)) (= (_ bv6 32) main_~main__y~0))} is VALID [2018-11-23 11:41:25,480 INFO L273 TraceCheckUtils]: 10: Hoare triple {718#(or (not (= main_~main__i~0 main_~main__j~0)) (= (_ bv8 32) main_~main__y~0) (not (= (bvadd main_~main__x~0 (_ bv4294967288 32)) (_ bv0 32))))} assume 0bv32 != ~main__x~0;~main____CPAchecker_TMP_0~0 := ~main__x~0;~main__x~0 := ~bvsub32(~main__x~0, 1bv32);~main____CPAchecker_TMP_1~0 := ~main__y~0;~main__y~0 := ~bvsub32(~main__y~0, 1bv32); {714#(or (= (bvadd main_~main__y~0 (_ bv4294967289 32)) (_ bv0 32)) (not (= (bvadd main_~main__x~0 (_ bv4294967289 32)) (_ bv0 32))) (not (= main_~main__i~0 main_~main__j~0)))} is VALID [2018-11-23 11:41:25,483 INFO L273 TraceCheckUtils]: 9: Hoare triple {722#(or (not (= main_~main__i~0 main_~main__j~0)) (not (= (bvadd main_~main__x~0 (_ bv4294967287 32)) (_ bv0 32))) (= (bvadd main_~main__y~0 (_ bv4294967287 32)) (_ bv0 32)))} assume 0bv32 != ~main__x~0;~main____CPAchecker_TMP_0~0 := ~main__x~0;~main__x~0 := ~bvsub32(~main__x~0, 1bv32);~main____CPAchecker_TMP_1~0 := ~main__y~0;~main__y~0 := ~bvsub32(~main__y~0, 1bv32); {718#(or (not (= main_~main__i~0 main_~main__j~0)) (= (_ bv8 32) main_~main__y~0) (not (= (bvadd main_~main__x~0 (_ bv4294967288 32)) (_ bv0 32))))} is VALID [2018-11-23 11:41:25,485 INFO L273 TraceCheckUtils]: 8: Hoare triple {726#(or (= (_ bv10 32) main_~main__y~0) (not (= (bvadd main_~main__x~0 (_ bv4294967286 32)) (_ bv0 32))) (not (= main_~main__i~0 main_~main__j~0)))} assume 0bv32 != ~main__x~0;~main____CPAchecker_TMP_0~0 := ~main__x~0;~main__x~0 := ~bvsub32(~main__x~0, 1bv32);~main____CPAchecker_TMP_1~0 := ~main__y~0;~main__y~0 := ~bvsub32(~main__y~0, 1bv32); {722#(or (not (= main_~main__i~0 main_~main__j~0)) (not (= (bvadd main_~main__x~0 (_ bv4294967287 32)) (_ bv0 32))) (= (bvadd main_~main__y~0 (_ bv4294967287 32)) (_ bv0 32)))} is VALID [2018-11-23 11:41:25,489 INFO L273 TraceCheckUtils]: 7: Hoare triple {594#true} assume !!~bvsge32(~main__j~0, 0bv32);~main__x~0 := ~main__i~0;~main__y~0 := ~main__j~0; {726#(or (= (_ bv10 32) main_~main__y~0) (not (= (bvadd main_~main__x~0 (_ bv4294967286 32)) (_ bv0 32))) (not (= main_~main__i~0 main_~main__j~0)))} is VALID [2018-11-23 11:41:25,490 INFO L273 TraceCheckUtils]: 6: Hoare triple {594#true} assume !!~bvsge32(~main__i~0, 0bv32); {594#true} is VALID [2018-11-23 11:41:25,490 INFO L273 TraceCheckUtils]: 5: Hoare triple {594#true} havoc ~main__i~0;havoc ~main__j~0;~main__i~0 := #t~nondet1;havoc #t~nondet1;~main__j~0 := #t~nondet2;havoc #t~nondet2; {594#true} is VALID [2018-11-23 11:41:25,490 INFO L256 TraceCheckUtils]: 4: Hoare triple {594#true} call #t~ret3 := main(); {594#true} is VALID [2018-11-23 11:41:25,490 INFO L268 TraceCheckUtils]: 3: Hoare quadruple {594#true} {594#true} #32#return; {594#true} is VALID [2018-11-23 11:41:25,491 INFO L273 TraceCheckUtils]: 2: Hoare triple {594#true} assume true; {594#true} is VALID [2018-11-23 11:41:25,491 INFO L273 TraceCheckUtils]: 1: Hoare triple {594#true} ~__return_main~0 := 0bv32;~__return_72~0 := 0bv32; {594#true} is VALID [2018-11-23 11:41:25,491 INFO L256 TraceCheckUtils]: 0: Hoare triple {594#true} call ULTIMATE.init(); {594#true} is VALID [2018-11-23 11:41:25,494 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 11:41:25,496 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 11:41:25,496 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 28 [2018-11-23 11:41:25,496 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 22 [2018-11-23 11:41:25,497 INFO L84 Accepts]: Finished accepts. word is accepted. [2018-11-23 11:41:25,497 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 28 states. [2018-11-23 11:41:26,022 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 36 edges. 36 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2018-11-23 11:41:26,022 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-11-23 11:41:26,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-11-23 11:41:26,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=578, Unknown=0, NotChecked=0, Total=756 [2018-11-23 11:41:26,024 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 28 states. [2018-11-23 11:41:44,733 WARN L180 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2018-11-23 11:41:56,910 WARN L180 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2018-11-23 11:41:57,322 WARN L180 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 60 [2018-11-23 11:42:06,423 WARN L180 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2018-11-23 11:42:06,980 WARN L180 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 63 [2018-11-23 11:42:12,848 WARN L180 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2018-11-23 11:42:38,903 WARN L180 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2018-11-23 11:42:39,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 11:42:39,024 INFO L93 Difference]: Finished difference Result 41 states and 52 transitions. [2018-11-23 11:42:39,025 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-11-23 11:42:39,025 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 22 [2018-11-23 11:42:39,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 11:42:39,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-11-23 11:42:39,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 52 transitions. [2018-11-23 11:42:39,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-11-23 11:42:39,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 52 transitions. [2018-11-23 11:42:39,031 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 29 states and 52 transitions. [2018-11-23 11:42:39,930 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 52 edges. 52 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2018-11-23 11:42:39,932 INFO L225 Difference]: With dead ends: 41 [2018-11-23 11:42:39,932 INFO L226 Difference]: Without dead ends: 35 [2018-11-23 11:42:39,934 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 71.4s TimeCoverageRelationStatistics Valid=544, Invalid=1251, Unknown=11, NotChecked=0, Total=1806 [2018-11-23 11:42:39,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-11-23 11:42:40,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-11-23 11:42:40,193 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2018-11-23 11:42:40,193 INFO L82 GeneralOperation]: Start isEquivalent. First operand 35 states. Second operand 35 states. [2018-11-23 11:42:40,193 INFO L74 IsIncluded]: Start isIncluded. First operand 35 states. Second operand 35 states. [2018-11-23 11:42:40,194 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 35 states. [2018-11-23 11:42:40,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 11:42:40,196 INFO L93 Difference]: Finished difference Result 35 states and 35 transitions. [2018-11-23 11:42:40,197 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2018-11-23 11:42:40,197 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-23 11:42:40,197 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2018-11-23 11:42:40,198 INFO L74 IsIncluded]: Start isIncluded. First operand 35 states. Second operand 35 states. [2018-11-23 11:42:40,198 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 35 states. [2018-11-23 11:42:40,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 11:42:40,200 INFO L93 Difference]: Finished difference Result 35 states and 35 transitions. [2018-11-23 11:42:40,200 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2018-11-23 11:42:40,201 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-23 11:42:40,201 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2018-11-23 11:42:40,201 INFO L88 GeneralOperation]: Finished isEquivalent. [2018-11-23 11:42:40,201 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2018-11-23 11:42:40,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-11-23 11:42:40,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2018-11-23 11:42:40,203 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 22 [2018-11-23 11:42:40,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 11:42:40,204 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2018-11-23 11:42:40,204 INFO L481 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-11-23 11:42:40,204 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2018-11-23 11:42:40,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-11-23 11:42:40,205 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 11:42:40,205 INFO L402 BasicCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 11:42:40,206 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 11:42:40,206 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 11:42:40,206 INFO L82 PathProgramCache]: Analyzing trace with hash -944889395, now seen corresponding path program 4 times [2018-11-23 11:42:40,207 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-23 11:42:40,207 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-23 11:42:40,226 INFO L101 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-23 11:42:40,334 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-23 11:42:40,334 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 11:42:40,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 11:42:40,422 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 11:42:42,762 INFO L256 TraceCheckUtils]: 0: Hoare triple {983#true} call ULTIMATE.init(); {983#true} is VALID [2018-11-23 11:42:42,763 INFO L273 TraceCheckUtils]: 1: Hoare triple {983#true} ~__return_main~0 := 0bv32;~__return_72~0 := 0bv32; {983#true} is VALID [2018-11-23 11:42:42,763 INFO L273 TraceCheckUtils]: 2: Hoare triple {983#true} assume true; {983#true} is VALID [2018-11-23 11:42:42,763 INFO L268 TraceCheckUtils]: 3: Hoare quadruple {983#true} {983#true} #32#return; {983#true} is VALID [2018-11-23 11:42:42,763 INFO L256 TraceCheckUtils]: 4: Hoare triple {983#true} call #t~ret3 := main(); {983#true} is VALID [2018-11-23 11:42:42,764 INFO L273 TraceCheckUtils]: 5: Hoare triple {983#true} havoc ~main__i~0;havoc ~main__j~0;~main__i~0 := #t~nondet1;havoc #t~nondet1;~main__j~0 := #t~nondet2;havoc #t~nondet2; {983#true} is VALID [2018-11-23 11:42:42,764 INFO L273 TraceCheckUtils]: 6: Hoare triple {983#true} assume !!~bvsge32(~main__i~0, 0bv32); {983#true} is VALID [2018-11-23 11:42:42,779 INFO L273 TraceCheckUtils]: 7: Hoare triple {983#true} assume !!~bvsge32(~main__j~0, 0bv32);~main__x~0 := ~main__i~0;~main__y~0 := ~main__j~0; {1009#(and (= main_~main__y~0 main_~main__j~0) (= main_~main__i~0 main_~main__x~0))} is VALID [2018-11-23 11:42:42,821 INFO L273 TraceCheckUtils]: 8: Hoare triple {1009#(and (= main_~main__y~0 main_~main__j~0) (= main_~main__i~0 main_~main__x~0))} assume 0bv32 != ~main__x~0;~main____CPAchecker_TMP_0~0 := ~main__x~0;~main__x~0 := ~bvsub32(~main__x~0, 1bv32);~main____CPAchecker_TMP_1~0 := ~main__y~0;~main__y~0 := ~bvsub32(~main__y~0, 1bv32); {1013#(and (= (bvadd main_~main__i~0 (_ bv4294967295 32)) main_~main__x~0) (= (bvadd main_~main__j~0 (_ bv4294967295 32)) main_~main__y~0))} is VALID [2018-11-23 11:42:42,870 INFO L273 TraceCheckUtils]: 9: Hoare triple {1013#(and (= (bvadd main_~main__i~0 (_ bv4294967295 32)) main_~main__x~0) (= (bvadd main_~main__j~0 (_ bv4294967295 32)) main_~main__y~0))} assume 0bv32 != ~main__x~0;~main____CPAchecker_TMP_0~0 := ~main__x~0;~main__x~0 := ~bvsub32(~main__x~0, 1bv32);~main____CPAchecker_TMP_1~0 := ~main__y~0;~main__y~0 := ~bvsub32(~main__y~0, 1bv32); {1017#(and (= (bvadd main_~main__y~0 (_ bv2 32)) main_~main__j~0) (= (bvadd main_~main__i~0 (_ bv4294967294 32)) main_~main__x~0))} is VALID [2018-11-23 11:42:42,918 INFO L273 TraceCheckUtils]: 10: Hoare triple {1017#(and (= (bvadd main_~main__y~0 (_ bv2 32)) main_~main__j~0) (= (bvadd main_~main__i~0 (_ bv4294967294 32)) main_~main__x~0))} assume 0bv32 != ~main__x~0;~main____CPAchecker_TMP_0~0 := ~main__x~0;~main__x~0 := ~bvsub32(~main__x~0, 1bv32);~main____CPAchecker_TMP_1~0 := ~main__y~0;~main__y~0 := ~bvsub32(~main__y~0, 1bv32); {1021#(and (= (bvadd main_~main__j~0 (_ bv4294967293 32)) main_~main__y~0) (= (bvadd main_~main__i~0 (_ bv4294967293 32)) main_~main__x~0))} is VALID [2018-11-23 11:42:42,966 INFO L273 TraceCheckUtils]: 11: Hoare triple {1021#(and (= (bvadd main_~main__j~0 (_ bv4294967293 32)) main_~main__y~0) (= (bvadd main_~main__i~0 (_ bv4294967293 32)) main_~main__x~0))} assume 0bv32 != ~main__x~0;~main____CPAchecker_TMP_0~0 := ~main__x~0;~main__x~0 := ~bvsub32(~main__x~0, 1bv32);~main____CPAchecker_TMP_1~0 := ~main__y~0;~main__y~0 := ~bvsub32(~main__y~0, 1bv32); {1025#(and (= (bvadd main_~main__y~0 (_ bv4 32)) main_~main__j~0) (= (bvadd main_~main__i~0 (_ bv4294967292 32)) main_~main__x~0))} is VALID [2018-11-23 11:42:43,018 INFO L273 TraceCheckUtils]: 12: Hoare triple {1025#(and (= (bvadd main_~main__y~0 (_ bv4 32)) main_~main__j~0) (= (bvadd main_~main__i~0 (_ bv4294967292 32)) main_~main__x~0))} assume 0bv32 != ~main__x~0;~main____CPAchecker_TMP_0~0 := ~main__x~0;~main__x~0 := ~bvsub32(~main__x~0, 1bv32);~main____CPAchecker_TMP_1~0 := ~main__y~0;~main__y~0 := ~bvsub32(~main__y~0, 1bv32); {1029#(and (= (bvadd main_~main__i~0 (_ bv4294967291 32)) main_~main__x~0) (= (bvadd main_~main__y~0 (_ bv5 32)) main_~main__j~0))} is VALID [2018-11-23 11:42:43,058 INFO L273 TraceCheckUtils]: 13: Hoare triple {1029#(and (= (bvadd main_~main__i~0 (_ bv4294967291 32)) main_~main__x~0) (= (bvadd main_~main__y~0 (_ bv5 32)) main_~main__j~0))} assume 0bv32 != ~main__x~0;~main____CPAchecker_TMP_0~0 := ~main__x~0;~main__x~0 := ~bvsub32(~main__x~0, 1bv32);~main____CPAchecker_TMP_1~0 := ~main__y~0;~main__y~0 := ~bvsub32(~main__y~0, 1bv32); {1033#(and (= (bvadd main_~main__y~0 (_ bv6 32)) main_~main__j~0) (= (bvadd main_~main__i~0 (_ bv4294967290 32)) main_~main__x~0))} is VALID [2018-11-23 11:42:43,103 INFO L273 TraceCheckUtils]: 14: Hoare triple {1033#(and (= (bvadd main_~main__y~0 (_ bv6 32)) main_~main__j~0) (= (bvadd main_~main__i~0 (_ bv4294967290 32)) main_~main__x~0))} assume 0bv32 != ~main__x~0;~main____CPAchecker_TMP_0~0 := ~main__x~0;~main__x~0 := ~bvsub32(~main__x~0, 1bv32);~main____CPAchecker_TMP_1~0 := ~main__y~0;~main__y~0 := ~bvsub32(~main__y~0, 1bv32); {1037#(and (= (bvadd main_~main__i~0 (_ bv4294967289 32)) main_~main__x~0) (= (bvadd main_~main__j~0 (_ bv4294967289 32)) main_~main__y~0))} is VALID [2018-11-23 11:42:43,163 INFO L273 TraceCheckUtils]: 15: Hoare triple {1037#(and (= (bvadd main_~main__i~0 (_ bv4294967289 32)) main_~main__x~0) (= (bvadd main_~main__j~0 (_ bv4294967289 32)) main_~main__y~0))} assume 0bv32 != ~main__x~0;~main____CPAchecker_TMP_0~0 := ~main__x~0;~main__x~0 := ~bvsub32(~main__x~0, 1bv32);~main____CPAchecker_TMP_1~0 := ~main__y~0;~main__y~0 := ~bvsub32(~main__y~0, 1bv32); {1041#(and (= (bvadd main_~main__i~0 (_ bv4294967288 32)) main_~main__x~0) (= (bvadd main_~main__j~0 (_ bv4294967288 32)) main_~main__y~0))} is VALID [2018-11-23 11:42:43,217 INFO L273 TraceCheckUtils]: 16: Hoare triple {1041#(and (= (bvadd main_~main__i~0 (_ bv4294967288 32)) main_~main__x~0) (= (bvadd main_~main__j~0 (_ bv4294967288 32)) main_~main__y~0))} assume 0bv32 != ~main__x~0;~main____CPAchecker_TMP_0~0 := ~main__x~0;~main__x~0 := ~bvsub32(~main__x~0, 1bv32);~main____CPAchecker_TMP_1~0 := ~main__y~0;~main__y~0 := ~bvsub32(~main__y~0, 1bv32); {1045#(and (= (bvadd main_~main__j~0 (_ bv4294967287 32)) main_~main__y~0) (= (bvadd main_~main__i~0 (_ bv4294967287 32)) main_~main__x~0))} is VALID [2018-11-23 11:42:43,299 INFO L273 TraceCheckUtils]: 17: Hoare triple {1045#(and (= (bvadd main_~main__j~0 (_ bv4294967287 32)) main_~main__y~0) (= (bvadd main_~main__i~0 (_ bv4294967287 32)) main_~main__x~0))} assume 0bv32 != ~main__x~0;~main____CPAchecker_TMP_0~0 := ~main__x~0;~main__x~0 := ~bvsub32(~main__x~0, 1bv32);~main____CPAchecker_TMP_1~0 := ~main__y~0;~main__y~0 := ~bvsub32(~main__y~0, 1bv32); {1049#(and (= (bvadd main_~main__j~0 (_ bv4294967286 32)) main_~main__y~0) (= (bvadd main_~main__i~0 (_ bv4294967286 32)) main_~main__x~0))} is VALID [2018-11-23 11:42:43,368 INFO L273 TraceCheckUtils]: 18: Hoare triple {1049#(and (= (bvadd main_~main__j~0 (_ bv4294967286 32)) main_~main__y~0) (= (bvadd main_~main__i~0 (_ bv4294967286 32)) main_~main__x~0))} assume 0bv32 != ~main__x~0;~main____CPAchecker_TMP_0~0 := ~main__x~0;~main__x~0 := ~bvsub32(~main__x~0, 1bv32);~main____CPAchecker_TMP_1~0 := ~main__y~0;~main__y~0 := ~bvsub32(~main__y~0, 1bv32); {1053#(and (= (bvadd main_~main__i~0 (_ bv4294967285 32)) main_~main__x~0) (= (bvadd main_~main__j~0 (_ bv4294967285 32)) main_~main__y~0))} is VALID [2018-11-23 11:42:43,414 INFO L273 TraceCheckUtils]: 19: Hoare triple {1053#(and (= (bvadd main_~main__i~0 (_ bv4294967285 32)) main_~main__x~0) (= (bvadd main_~main__j~0 (_ bv4294967285 32)) main_~main__y~0))} assume 0bv32 != ~main__x~0;~main____CPAchecker_TMP_0~0 := ~main__x~0;~main__x~0 := ~bvsub32(~main__x~0, 1bv32);~main____CPAchecker_TMP_1~0 := ~main__y~0;~main__y~0 := ~bvsub32(~main__y~0, 1bv32); {1057#(and (= (bvadd main_~main__y~0 (_ bv12 32)) main_~main__j~0) (= (bvadd main_~main__i~0 (_ bv4294967284 32)) main_~main__x~0))} is VALID [2018-11-23 11:42:43,459 INFO L273 TraceCheckUtils]: 20: Hoare triple {1057#(and (= (bvadd main_~main__y~0 (_ bv12 32)) main_~main__j~0) (= (bvadd main_~main__i~0 (_ bv4294967284 32)) main_~main__x~0))} assume 0bv32 != ~main__x~0;~main____CPAchecker_TMP_0~0 := ~main__x~0;~main__x~0 := ~bvsub32(~main__x~0, 1bv32);~main____CPAchecker_TMP_1~0 := ~main__y~0;~main__y~0 := ~bvsub32(~main__y~0, 1bv32); {1061#(and (= (bvadd main_~main__y~0 (_ bv13 32)) main_~main__j~0) (= (bvadd main_~main__i~0 (_ bv4294967283 32)) main_~main__x~0))} is VALID [2018-11-23 11:42:43,510 INFO L273 TraceCheckUtils]: 21: Hoare triple {1061#(and (= (bvadd main_~main__y~0 (_ bv13 32)) main_~main__j~0) (= (bvadd main_~main__i~0 (_ bv4294967283 32)) main_~main__x~0))} assume 0bv32 != ~main__x~0;~main____CPAchecker_TMP_0~0 := ~main__x~0;~main__x~0 := ~bvsub32(~main__x~0, 1bv32);~main____CPAchecker_TMP_1~0 := ~main__y~0;~main__y~0 := ~bvsub32(~main__y~0, 1bv32); {1065#(and (= (bvadd main_~main__i~0 (_ bv4294967282 32)) main_~main__x~0) (= (bvadd main_~main__y~0 (_ bv14 32)) main_~main__j~0))} is VALID [2018-11-23 11:42:43,553 INFO L273 TraceCheckUtils]: 22: Hoare triple {1065#(and (= (bvadd main_~main__i~0 (_ bv4294967282 32)) main_~main__x~0) (= (bvadd main_~main__y~0 (_ bv14 32)) main_~main__j~0))} assume 0bv32 != ~main__x~0;~main____CPAchecker_TMP_0~0 := ~main__x~0;~main__x~0 := ~bvsub32(~main__x~0, 1bv32);~main____CPAchecker_TMP_1~0 := ~main__y~0;~main__y~0 := ~bvsub32(~main__y~0, 1bv32); {1069#(and (= (bvadd main_~main__y~0 (_ bv15 32)) main_~main__j~0) (= (bvadd main_~main__i~0 (_ bv4294967281 32)) main_~main__x~0))} is VALID [2018-11-23 11:42:43,607 INFO L273 TraceCheckUtils]: 23: Hoare triple {1069#(and (= (bvadd main_~main__y~0 (_ bv15 32)) main_~main__j~0) (= (bvadd main_~main__i~0 (_ bv4294967281 32)) main_~main__x~0))} assume 0bv32 != ~main__x~0;~main____CPAchecker_TMP_0~0 := ~main__x~0;~main__x~0 := ~bvsub32(~main__x~0, 1bv32);~main____CPAchecker_TMP_1~0 := ~main__y~0;~main__y~0 := ~bvsub32(~main__y~0, 1bv32); {1073#(and (= (bvadd main_~main__y~0 (_ bv16 32)) main_~main__j~0) (= (bvadd main_~main__i~0 (_ bv4294967280 32)) main_~main__x~0))} is VALID [2018-11-23 11:42:43,667 INFO L273 TraceCheckUtils]: 24: Hoare triple {1073#(and (= (bvadd main_~main__y~0 (_ bv16 32)) main_~main__j~0) (= (bvadd main_~main__i~0 (_ bv4294967280 32)) main_~main__x~0))} assume 0bv32 != ~main__x~0;~main____CPAchecker_TMP_0~0 := ~main__x~0;~main__x~0 := ~bvsub32(~main__x~0, 1bv32);~main____CPAchecker_TMP_1~0 := ~main__y~0;~main__y~0 := ~bvsub32(~main__y~0, 1bv32); {1077#(and (= (bvadd main_~main__i~0 (_ bv4294967279 32)) main_~main__x~0) (= (bvadd main_~main__j~0 (_ bv4294967279 32)) main_~main__y~0))} is VALID [2018-11-23 11:42:43,722 INFO L273 TraceCheckUtils]: 25: Hoare triple {1077#(and (= (bvadd main_~main__i~0 (_ bv4294967279 32)) main_~main__x~0) (= (bvadd main_~main__j~0 (_ bv4294967279 32)) main_~main__y~0))} assume 0bv32 != ~main__x~0;~main____CPAchecker_TMP_0~0 := ~main__x~0;~main__x~0 := ~bvsub32(~main__x~0, 1bv32);~main____CPAchecker_TMP_1~0 := ~main__y~0;~main__y~0 := ~bvsub32(~main__y~0, 1bv32); {1081#(and (= (bvadd main_~main__i~0 (_ bv4294967278 32)) main_~main__x~0) (= (bvadd main_~main__j~0 (_ bv4294967278 32)) main_~main__y~0))} is VALID [2018-11-23 11:42:43,788 INFO L273 TraceCheckUtils]: 26: Hoare triple {1081#(and (= (bvadd main_~main__i~0 (_ bv4294967278 32)) main_~main__x~0) (= (bvadd main_~main__j~0 (_ bv4294967278 32)) main_~main__y~0))} assume 0bv32 != ~main__x~0;~main____CPAchecker_TMP_0~0 := ~main__x~0;~main__x~0 := ~bvsub32(~main__x~0, 1bv32);~main____CPAchecker_TMP_1~0 := ~main__y~0;~main__y~0 := ~bvsub32(~main__y~0, 1bv32); {1085#(and (= (bvadd main_~main__i~0 (_ bv4294967277 32)) main_~main__x~0) (= (bvadd main_~main__j~0 (_ bv4294967277 32)) main_~main__y~0))} is VALID [2018-11-23 11:42:43,844 INFO L273 TraceCheckUtils]: 27: Hoare triple {1085#(and (= (bvadd main_~main__i~0 (_ bv4294967277 32)) main_~main__x~0) (= (bvadd main_~main__j~0 (_ bv4294967277 32)) main_~main__y~0))} assume 0bv32 != ~main__x~0;~main____CPAchecker_TMP_0~0 := ~main__x~0;~main__x~0 := ~bvsub32(~main__x~0, 1bv32);~main____CPAchecker_TMP_1~0 := ~main__y~0;~main__y~0 := ~bvsub32(~main__y~0, 1bv32); {1089#(and (= (bvadd main_~main__i~0 (_ bv4294967276 32)) main_~main__x~0) (= (bvadd main_~main__j~0 (_ bv4294967276 32)) main_~main__y~0))} is VALID [2018-11-23 11:42:43,909 INFO L273 TraceCheckUtils]: 28: Hoare triple {1089#(and (= (bvadd main_~main__i~0 (_ bv4294967276 32)) main_~main__x~0) (= (bvadd main_~main__j~0 (_ bv4294967276 32)) main_~main__y~0))} assume 0bv32 != ~main__x~0;~main____CPAchecker_TMP_0~0 := ~main__x~0;~main__x~0 := ~bvsub32(~main__x~0, 1bv32);~main____CPAchecker_TMP_1~0 := ~main__y~0;~main__y~0 := ~bvsub32(~main__y~0, 1bv32); {1093#(and (= (bvadd main_~main__j~0 (_ bv4294967275 32)) main_~main__y~0) (= (bvadd main_~main__i~0 (_ bv4294967275 32)) main_~main__x~0))} is VALID [2018-11-23 11:42:43,967 INFO L273 TraceCheckUtils]: 29: Hoare triple {1093#(and (= (bvadd main_~main__j~0 (_ bv4294967275 32)) main_~main__y~0) (= (bvadd main_~main__i~0 (_ bv4294967275 32)) main_~main__x~0))} assume 0bv32 != ~main__x~0;~main____CPAchecker_TMP_0~0 := ~main__x~0;~main__x~0 := ~bvsub32(~main__x~0, 1bv32);~main____CPAchecker_TMP_1~0 := ~main__y~0;~main__y~0 := ~bvsub32(~main__y~0, 1bv32); {1097#(and (= (bvadd main_~main__j~0 (_ bv4294967274 32)) main_~main__y~0) (= (bvadd main_~main__i~0 (_ bv4294967274 32)) main_~main__x~0))} is VALID [2018-11-23 11:42:43,968 INFO L273 TraceCheckUtils]: 30: Hoare triple {1097#(and (= (bvadd main_~main__j~0 (_ bv4294967274 32)) main_~main__y~0) (= (bvadd main_~main__i~0 (_ bv4294967274 32)) main_~main__x~0))} assume !(0bv32 != ~main__x~0); {1101#(and (= (_ bv22 32) main_~main__i~0) (= (bvadd main_~main__j~0 (_ bv4294967274 32)) main_~main__y~0))} is VALID [2018-11-23 11:42:43,968 INFO L273 TraceCheckUtils]: 31: Hoare triple {1101#(and (= (_ bv22 32) main_~main__i~0) (= (bvadd main_~main__j~0 (_ bv4294967274 32)) main_~main__y~0))} assume ~main__i~0 == ~main__j~0;havoc ~__tmp_1~0;~__tmp_1~0 := (if 0bv32 == ~main__y~0 then 1bv32 else 0bv32);havoc ~__VERIFIER_assert__cond~0;~__VERIFIER_assert__cond~0 := ~__tmp_1~0; {1105#(= (_ bv1 32) main_~__VERIFIER_assert__cond~0)} is VALID [2018-11-23 11:42:43,969 INFO L273 TraceCheckUtils]: 32: Hoare triple {1105#(= (_ bv1 32) main_~__VERIFIER_assert__cond~0)} assume 0bv32 == ~__VERIFIER_assert__cond~0; {984#false} is VALID [2018-11-23 11:42:43,969 INFO L273 TraceCheckUtils]: 33: Hoare triple {984#false} assume !false; {984#false} is VALID [2018-11-23 11:42:43,972 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 11:42:43,972 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-23 11:42:46,802 INFO L273 TraceCheckUtils]: 33: Hoare triple {984#false} assume !false; {984#false} is VALID [2018-11-23 11:42:46,803 INFO L273 TraceCheckUtils]: 32: Hoare triple {1115#(not (= main_~__VERIFIER_assert__cond~0 (_ bv0 32)))} assume 0bv32 == ~__VERIFIER_assert__cond~0; {984#false} is VALID [2018-11-23 11:42:46,804 INFO L273 TraceCheckUtils]: 31: Hoare triple {1119#(or (= (_ bv0 32) main_~main__y~0) (not (= main_~main__i~0 main_~main__j~0)))} assume ~main__i~0 == ~main__j~0;havoc ~__tmp_1~0;~__tmp_1~0 := (if 0bv32 == ~main__y~0 then 1bv32 else 0bv32);havoc ~__VERIFIER_assert__cond~0;~__VERIFIER_assert__cond~0 := ~__tmp_1~0; {1115#(not (= main_~__VERIFIER_assert__cond~0 (_ bv0 32)))} is VALID [2018-11-23 11:42:46,807 INFO L273 TraceCheckUtils]: 30: Hoare triple {1123#(or (= (_ bv0 32) main_~main__y~0) (not (= (_ bv0 32) main_~main__x~0)) (not (= main_~main__i~0 main_~main__j~0)))} assume !(0bv32 != ~main__x~0); {1119#(or (= (_ bv0 32) main_~main__y~0) (not (= main_~main__i~0 main_~main__j~0)))} is VALID [2018-11-23 11:42:46,810 INFO L273 TraceCheckUtils]: 29: Hoare triple {1127#(or (not (= (bvadd main_~main__x~0 (_ bv4294967295 32)) (_ bv0 32))) (not (= main_~main__i~0 main_~main__j~0)) (= (bvadd main_~main__y~0 (_ bv4294967295 32)) (_ bv0 32)))} assume 0bv32 != ~main__x~0;~main____CPAchecker_TMP_0~0 := ~main__x~0;~main__x~0 := ~bvsub32(~main__x~0, 1bv32);~main____CPAchecker_TMP_1~0 := ~main__y~0;~main__y~0 := ~bvsub32(~main__y~0, 1bv32); {1123#(or (= (_ bv0 32) main_~main__y~0) (not (= (_ bv0 32) main_~main__x~0)) (not (= main_~main__i~0 main_~main__j~0)))} is VALID [2018-11-23 11:42:46,813 INFO L273 TraceCheckUtils]: 28: Hoare triple {1131#(or (= (bvadd main_~main__y~0 (_ bv4294967294 32)) (_ bv0 32)) (not (= (bvadd main_~main__x~0 (_ bv4294967294 32)) (_ bv0 32))) (not (= main_~main__i~0 main_~main__j~0)))} assume 0bv32 != ~main__x~0;~main____CPAchecker_TMP_0~0 := ~main__x~0;~main__x~0 := ~bvsub32(~main__x~0, 1bv32);~main____CPAchecker_TMP_1~0 := ~main__y~0;~main__y~0 := ~bvsub32(~main__y~0, 1bv32); {1127#(or (not (= (bvadd main_~main__x~0 (_ bv4294967295 32)) (_ bv0 32))) (not (= main_~main__i~0 main_~main__j~0)) (= (bvadd main_~main__y~0 (_ bv4294967295 32)) (_ bv0 32)))} is VALID [2018-11-23 11:42:46,815 INFO L273 TraceCheckUtils]: 27: Hoare triple {1135#(or (not (= (bvadd main_~main__x~0 (_ bv4294967293 32)) (_ bv0 32))) (= (bvadd main_~main__y~0 (_ bv4294967293 32)) (_ bv0 32)) (not (= main_~main__i~0 main_~main__j~0)))} assume 0bv32 != ~main__x~0;~main____CPAchecker_TMP_0~0 := ~main__x~0;~main__x~0 := ~bvsub32(~main__x~0, 1bv32);~main____CPAchecker_TMP_1~0 := ~main__y~0;~main__y~0 := ~bvsub32(~main__y~0, 1bv32); {1131#(or (= (bvadd main_~main__y~0 (_ bv4294967294 32)) (_ bv0 32)) (not (= (bvadd main_~main__x~0 (_ bv4294967294 32)) (_ bv0 32))) (not (= main_~main__i~0 main_~main__j~0)))} is VALID [2018-11-23 11:42:46,818 INFO L273 TraceCheckUtils]: 26: Hoare triple {1139#(or (= (bvadd main_~main__y~0 (_ bv4294967292 32)) (_ bv0 32)) (not (= main_~main__i~0 main_~main__j~0)) (not (= (bvadd main_~main__x~0 (_ bv4294967292 32)) (_ bv0 32))))} assume 0bv32 != ~main__x~0;~main____CPAchecker_TMP_0~0 := ~main__x~0;~main__x~0 := ~bvsub32(~main__x~0, 1bv32);~main____CPAchecker_TMP_1~0 := ~main__y~0;~main__y~0 := ~bvsub32(~main__y~0, 1bv32); {1135#(or (not (= (bvadd main_~main__x~0 (_ bv4294967293 32)) (_ bv0 32))) (= (bvadd main_~main__y~0 (_ bv4294967293 32)) (_ bv0 32)) (not (= main_~main__i~0 main_~main__j~0)))} is VALID [2018-11-23 11:42:46,821 INFO L273 TraceCheckUtils]: 25: Hoare triple {1143#(or (not (= (bvadd main_~main__x~0 (_ bv4294967291 32)) (_ bv0 32))) (not (= main_~main__i~0 main_~main__j~0)) (= (bvadd main_~main__y~0 (_ bv4294967291 32)) (_ bv0 32)))} assume 0bv32 != ~main__x~0;~main____CPAchecker_TMP_0~0 := ~main__x~0;~main__x~0 := ~bvsub32(~main__x~0, 1bv32);~main____CPAchecker_TMP_1~0 := ~main__y~0;~main__y~0 := ~bvsub32(~main__y~0, 1bv32); {1139#(or (= (bvadd main_~main__y~0 (_ bv4294967292 32)) (_ bv0 32)) (not (= main_~main__i~0 main_~main__j~0)) (not (= (bvadd main_~main__x~0 (_ bv4294967292 32)) (_ bv0 32))))} is VALID [2018-11-23 11:42:46,823 INFO L273 TraceCheckUtils]: 24: Hoare triple {1147#(or (not (= (bvadd main_~main__x~0 (_ bv4294967290 32)) (_ bv0 32))) (not (= main_~main__i~0 main_~main__j~0)) (= (_ bv6 32) main_~main__y~0))} assume 0bv32 != ~main__x~0;~main____CPAchecker_TMP_0~0 := ~main__x~0;~main__x~0 := ~bvsub32(~main__x~0, 1bv32);~main____CPAchecker_TMP_1~0 := ~main__y~0;~main__y~0 := ~bvsub32(~main__y~0, 1bv32); {1143#(or (not (= (bvadd main_~main__x~0 (_ bv4294967291 32)) (_ bv0 32))) (not (= main_~main__i~0 main_~main__j~0)) (= (bvadd main_~main__y~0 (_ bv4294967291 32)) (_ bv0 32)))} is VALID [2018-11-23 11:42:46,825 INFO L273 TraceCheckUtils]: 23: Hoare triple {1151#(or (= (bvadd main_~main__y~0 (_ bv4294967289 32)) (_ bv0 32)) (not (= (bvadd main_~main__x~0 (_ bv4294967289 32)) (_ bv0 32))) (not (= main_~main__i~0 main_~main__j~0)))} assume 0bv32 != ~main__x~0;~main____CPAchecker_TMP_0~0 := ~main__x~0;~main__x~0 := ~bvsub32(~main__x~0, 1bv32);~main____CPAchecker_TMP_1~0 := ~main__y~0;~main__y~0 := ~bvsub32(~main__y~0, 1bv32); {1147#(or (not (= (bvadd main_~main__x~0 (_ bv4294967290 32)) (_ bv0 32))) (not (= main_~main__i~0 main_~main__j~0)) (= (_ bv6 32) main_~main__y~0))} is VALID [2018-11-23 11:42:46,827 INFO L273 TraceCheckUtils]: 22: Hoare triple {1155#(or (not (= main_~main__i~0 main_~main__j~0)) (= (_ bv8 32) main_~main__y~0) (not (= (bvadd main_~main__x~0 (_ bv4294967288 32)) (_ bv0 32))))} assume 0bv32 != ~main__x~0;~main____CPAchecker_TMP_0~0 := ~main__x~0;~main__x~0 := ~bvsub32(~main__x~0, 1bv32);~main____CPAchecker_TMP_1~0 := ~main__y~0;~main__y~0 := ~bvsub32(~main__y~0, 1bv32); {1151#(or (= (bvadd main_~main__y~0 (_ bv4294967289 32)) (_ bv0 32)) (not (= (bvadd main_~main__x~0 (_ bv4294967289 32)) (_ bv0 32))) (not (= main_~main__i~0 main_~main__j~0)))} is VALID [2018-11-23 11:42:46,830 INFO L273 TraceCheckUtils]: 21: Hoare triple {1159#(or (not (= main_~main__i~0 main_~main__j~0)) (not (= (bvadd main_~main__x~0 (_ bv4294967287 32)) (_ bv0 32))) (= (bvadd main_~main__y~0 (_ bv4294967287 32)) (_ bv0 32)))} assume 0bv32 != ~main__x~0;~main____CPAchecker_TMP_0~0 := ~main__x~0;~main__x~0 := ~bvsub32(~main__x~0, 1bv32);~main____CPAchecker_TMP_1~0 := ~main__y~0;~main__y~0 := ~bvsub32(~main__y~0, 1bv32); {1155#(or (not (= main_~main__i~0 main_~main__j~0)) (= (_ bv8 32) main_~main__y~0) (not (= (bvadd main_~main__x~0 (_ bv4294967288 32)) (_ bv0 32))))} is VALID [2018-11-23 11:42:46,833 INFO L273 TraceCheckUtils]: 20: Hoare triple {1163#(or (= (_ bv10 32) main_~main__y~0) (not (= (bvadd main_~main__x~0 (_ bv4294967286 32)) (_ bv0 32))) (not (= main_~main__i~0 main_~main__j~0)))} assume 0bv32 != ~main__x~0;~main____CPAchecker_TMP_0~0 := ~main__x~0;~main__x~0 := ~bvsub32(~main__x~0, 1bv32);~main____CPAchecker_TMP_1~0 := ~main__y~0;~main__y~0 := ~bvsub32(~main__y~0, 1bv32); {1159#(or (not (= main_~main__i~0 main_~main__j~0)) (not (= (bvadd main_~main__x~0 (_ bv4294967287 32)) (_ bv0 32))) (= (bvadd main_~main__y~0 (_ bv4294967287 32)) (_ bv0 32)))} is VALID [2018-11-23 11:42:46,835 INFO L273 TraceCheckUtils]: 19: Hoare triple {1167#(or (= (bvadd main_~main__y~0 (_ bv4294967285 32)) (_ bv0 32)) (not (= (bvadd main_~main__x~0 (_ bv4294967285 32)) (_ bv0 32))) (not (= main_~main__i~0 main_~main__j~0)))} assume 0bv32 != ~main__x~0;~main____CPAchecker_TMP_0~0 := ~main__x~0;~main__x~0 := ~bvsub32(~main__x~0, 1bv32);~main____CPAchecker_TMP_1~0 := ~main__y~0;~main__y~0 := ~bvsub32(~main__y~0, 1bv32); {1163#(or (= (_ bv10 32) main_~main__y~0) (not (= (bvadd main_~main__x~0 (_ bv4294967286 32)) (_ bv0 32))) (not (= main_~main__i~0 main_~main__j~0)))} is VALID [2018-11-23 11:42:46,838 INFO L273 TraceCheckUtils]: 18: Hoare triple {1171#(or (not (= (bvadd main_~main__x~0 (_ bv4294967284 32)) (_ bv0 32))) (= (_ bv12 32) main_~main__y~0) (not (= main_~main__i~0 main_~main__j~0)))} assume 0bv32 != ~main__x~0;~main____CPAchecker_TMP_0~0 := ~main__x~0;~main__x~0 := ~bvsub32(~main__x~0, 1bv32);~main____CPAchecker_TMP_1~0 := ~main__y~0;~main__y~0 := ~bvsub32(~main__y~0, 1bv32); {1167#(or (= (bvadd main_~main__y~0 (_ bv4294967285 32)) (_ bv0 32)) (not (= (bvadd main_~main__x~0 (_ bv4294967285 32)) (_ bv0 32))) (not (= main_~main__i~0 main_~main__j~0)))} is VALID [2018-11-23 11:42:46,841 INFO L273 TraceCheckUtils]: 17: Hoare triple {1175#(or (not (= (bvadd main_~main__x~0 (_ bv4294967283 32)) (_ bv0 32))) (= (bvadd main_~main__y~0 (_ bv4294967283 32)) (_ bv0 32)) (not (= main_~main__i~0 main_~main__j~0)))} assume 0bv32 != ~main__x~0;~main____CPAchecker_TMP_0~0 := ~main__x~0;~main__x~0 := ~bvsub32(~main__x~0, 1bv32);~main____CPAchecker_TMP_1~0 := ~main__y~0;~main__y~0 := ~bvsub32(~main__y~0, 1bv32); {1171#(or (not (= (bvadd main_~main__x~0 (_ bv4294967284 32)) (_ bv0 32))) (= (_ bv12 32) main_~main__y~0) (not (= main_~main__i~0 main_~main__j~0)))} is VALID [2018-11-23 11:42:46,844 INFO L273 TraceCheckUtils]: 16: Hoare triple {1179#(or (not (= (bvadd main_~main__x~0 (_ bv4294967282 32)) (_ bv0 32))) (= (_ bv14 32) main_~main__y~0) (not (= main_~main__i~0 main_~main__j~0)))} assume 0bv32 != ~main__x~0;~main____CPAchecker_TMP_0~0 := ~main__x~0;~main__x~0 := ~bvsub32(~main__x~0, 1bv32);~main____CPAchecker_TMP_1~0 := ~main__y~0;~main__y~0 := ~bvsub32(~main__y~0, 1bv32); {1175#(or (not (= (bvadd main_~main__x~0 (_ bv4294967283 32)) (_ bv0 32))) (= (bvadd main_~main__y~0 (_ bv4294967283 32)) (_ bv0 32)) (not (= main_~main__i~0 main_~main__j~0)))} is VALID [2018-11-23 11:42:46,847 INFO L273 TraceCheckUtils]: 15: Hoare triple {1183#(or (not (= (bvadd main_~main__x~0 (_ bv4294967281 32)) (_ bv0 32))) (not (= main_~main__i~0 main_~main__j~0)) (= (bvadd main_~main__y~0 (_ bv4294967281 32)) (_ bv0 32)))} assume 0bv32 != ~main__x~0;~main____CPAchecker_TMP_0~0 := ~main__x~0;~main__x~0 := ~bvsub32(~main__x~0, 1bv32);~main____CPAchecker_TMP_1~0 := ~main__y~0;~main__y~0 := ~bvsub32(~main__y~0, 1bv32); {1179#(or (not (= (bvadd main_~main__x~0 (_ bv4294967282 32)) (_ bv0 32))) (= (_ bv14 32) main_~main__y~0) (not (= main_~main__i~0 main_~main__j~0)))} is VALID [2018-11-23 11:42:46,850 INFO L273 TraceCheckUtils]: 14: Hoare triple {1187#(or (= (_ bv16 32) main_~main__y~0) (not (= main_~main__i~0 main_~main__j~0)) (not (= (bvadd main_~main__x~0 (_ bv4294967280 32)) (_ bv0 32))))} assume 0bv32 != ~main__x~0;~main____CPAchecker_TMP_0~0 := ~main__x~0;~main__x~0 := ~bvsub32(~main__x~0, 1bv32);~main____CPAchecker_TMP_1~0 := ~main__y~0;~main__y~0 := ~bvsub32(~main__y~0, 1bv32); {1183#(or (not (= (bvadd main_~main__x~0 (_ bv4294967281 32)) (_ bv0 32))) (not (= main_~main__i~0 main_~main__j~0)) (= (bvadd main_~main__y~0 (_ bv4294967281 32)) (_ bv0 32)))} is VALID [2018-11-23 11:42:46,853 INFO L273 TraceCheckUtils]: 13: Hoare triple {1191#(or (not (= (bvadd main_~main__x~0 (_ bv4294967279 32)) (_ bv0 32))) (= (bvadd main_~main__y~0 (_ bv4294967279 32)) (_ bv0 32)) (not (= main_~main__i~0 main_~main__j~0)))} assume 0bv32 != ~main__x~0;~main____CPAchecker_TMP_0~0 := ~main__x~0;~main__x~0 := ~bvsub32(~main__x~0, 1bv32);~main____CPAchecker_TMP_1~0 := ~main__y~0;~main__y~0 := ~bvsub32(~main__y~0, 1bv32); {1187#(or (= (_ bv16 32) main_~main__y~0) (not (= main_~main__i~0 main_~main__j~0)) (not (= (bvadd main_~main__x~0 (_ bv4294967280 32)) (_ bv0 32))))} is VALID [2018-11-23 11:42:46,856 INFO L273 TraceCheckUtils]: 12: Hoare triple {1195#(or (= (bvadd main_~main__y~0 (_ bv4294967278 32)) (_ bv0 32)) (not (= (bvadd main_~main__x~0 (_ bv4294967278 32)) (_ bv0 32))) (not (= main_~main__i~0 main_~main__j~0)))} assume 0bv32 != ~main__x~0;~main____CPAchecker_TMP_0~0 := ~main__x~0;~main__x~0 := ~bvsub32(~main__x~0, 1bv32);~main____CPAchecker_TMP_1~0 := ~main__y~0;~main__y~0 := ~bvsub32(~main__y~0, 1bv32); {1191#(or (not (= (bvadd main_~main__x~0 (_ bv4294967279 32)) (_ bv0 32))) (= (bvadd main_~main__y~0 (_ bv4294967279 32)) (_ bv0 32)) (not (= main_~main__i~0 main_~main__j~0)))} is VALID [2018-11-23 11:42:46,859 INFO L273 TraceCheckUtils]: 11: Hoare triple {1199#(or (not (= (bvadd main_~main__x~0 (_ bv4294967277 32)) (_ bv0 32))) (= (bvadd main_~main__y~0 (_ bv4294967277 32)) (_ bv0 32)) (not (= main_~main__i~0 main_~main__j~0)))} assume 0bv32 != ~main__x~0;~main____CPAchecker_TMP_0~0 := ~main__x~0;~main__x~0 := ~bvsub32(~main__x~0, 1bv32);~main____CPAchecker_TMP_1~0 := ~main__y~0;~main__y~0 := ~bvsub32(~main__y~0, 1bv32); {1195#(or (= (bvadd main_~main__y~0 (_ bv4294967278 32)) (_ bv0 32)) (not (= (bvadd main_~main__x~0 (_ bv4294967278 32)) (_ bv0 32))) (not (= main_~main__i~0 main_~main__j~0)))} is VALID [2018-11-23 11:42:46,860 INFO L273 TraceCheckUtils]: 10: Hoare triple {1203#(or (= (bvadd main_~main__y~0 (_ bv4294967276 32)) (_ bv0 32)) (not (= main_~main__i~0 main_~main__j~0)) (not (= (bvadd main_~main__x~0 (_ bv4294967276 32)) (_ bv0 32))))} assume 0bv32 != ~main__x~0;~main____CPAchecker_TMP_0~0 := ~main__x~0;~main__x~0 := ~bvsub32(~main__x~0, 1bv32);~main____CPAchecker_TMP_1~0 := ~main__y~0;~main__y~0 := ~bvsub32(~main__y~0, 1bv32); {1199#(or (not (= (bvadd main_~main__x~0 (_ bv4294967277 32)) (_ bv0 32))) (= (bvadd main_~main__y~0 (_ bv4294967277 32)) (_ bv0 32)) (not (= main_~main__i~0 main_~main__j~0)))} is VALID [2018-11-23 11:42:46,863 INFO L273 TraceCheckUtils]: 9: Hoare triple {1207#(or (= (_ bv21 32) main_~main__y~0) (not (= main_~main__i~0 main_~main__j~0)) (not (= (bvadd main_~main__x~0 (_ bv4294967275 32)) (_ bv0 32))))} assume 0bv32 != ~main__x~0;~main____CPAchecker_TMP_0~0 := ~main__x~0;~main__x~0 := ~bvsub32(~main__x~0, 1bv32);~main____CPAchecker_TMP_1~0 := ~main__y~0;~main__y~0 := ~bvsub32(~main__y~0, 1bv32); {1203#(or (= (bvadd main_~main__y~0 (_ bv4294967276 32)) (_ bv0 32)) (not (= main_~main__i~0 main_~main__j~0)) (not (= (bvadd main_~main__x~0 (_ bv4294967276 32)) (_ bv0 32))))} is VALID [2018-11-23 11:42:46,865 INFO L273 TraceCheckUtils]: 8: Hoare triple {1211#(or (not (= main_~main__i~0 main_~main__j~0)) (= (bvadd main_~main__y~0 (_ bv4294967274 32)) (_ bv0 32)) (not (= (bvadd main_~main__x~0 (_ bv4294967274 32)) (_ bv0 32))))} assume 0bv32 != ~main__x~0;~main____CPAchecker_TMP_0~0 := ~main__x~0;~main__x~0 := ~bvsub32(~main__x~0, 1bv32);~main____CPAchecker_TMP_1~0 := ~main__y~0;~main__y~0 := ~bvsub32(~main__y~0, 1bv32); {1207#(or (= (_ bv21 32) main_~main__y~0) (not (= main_~main__i~0 main_~main__j~0)) (not (= (bvadd main_~main__x~0 (_ bv4294967275 32)) (_ bv0 32))))} is VALID [2018-11-23 11:42:46,866 INFO L273 TraceCheckUtils]: 7: Hoare triple {983#true} assume !!~bvsge32(~main__j~0, 0bv32);~main__x~0 := ~main__i~0;~main__y~0 := ~main__j~0; {1211#(or (not (= main_~main__i~0 main_~main__j~0)) (= (bvadd main_~main__y~0 (_ bv4294967274 32)) (_ bv0 32)) (not (= (bvadd main_~main__x~0 (_ bv4294967274 32)) (_ bv0 32))))} is VALID [2018-11-23 11:42:46,866 INFO L273 TraceCheckUtils]: 6: Hoare triple {983#true} assume !!~bvsge32(~main__i~0, 0bv32); {983#true} is VALID [2018-11-23 11:42:46,866 INFO L273 TraceCheckUtils]: 5: Hoare triple {983#true} havoc ~main__i~0;havoc ~main__j~0;~main__i~0 := #t~nondet1;havoc #t~nondet1;~main__j~0 := #t~nondet2;havoc #t~nondet2; {983#true} is VALID [2018-11-23 11:42:46,866 INFO L256 TraceCheckUtils]: 4: Hoare triple {983#true} call #t~ret3 := main(); {983#true} is VALID [2018-11-23 11:42:46,867 INFO L268 TraceCheckUtils]: 3: Hoare quadruple {983#true} {983#true} #32#return; {983#true} is VALID [2018-11-23 11:42:46,867 INFO L273 TraceCheckUtils]: 2: Hoare triple {983#true} assume true; {983#true} is VALID [2018-11-23 11:42:46,867 INFO L273 TraceCheckUtils]: 1: Hoare triple {983#true} ~__return_main~0 := 0bv32;~__return_72~0 := 0bv32; {983#true} is VALID [2018-11-23 11:42:46,867 INFO L256 TraceCheckUtils]: 0: Hoare triple {983#true} call ULTIMATE.init(); {983#true} is VALID [2018-11-23 11:42:46,872 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 11:42:46,873 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 11:42:46,874 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 52 [2018-11-23 11:42:46,875 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 34 [2018-11-23 11:42:46,875 INFO L84 Accepts]: Finished accepts. word is accepted. [2018-11-23 11:42:46,877 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 52 states. [2018-11-23 11:42:48,036 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 60 edges. 60 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2018-11-23 11:42:48,036 INFO L459 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-11-23 11:42:48,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-11-23 11:42:48,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=634, Invalid=2018, Unknown=0, NotChecked=0, Total=2652 [2018-11-23 11:42:48,038 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand 52 states. [2018-11-23 11:43:39,809 WARN L180 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2018-11-23 11:44:24,949 WARN L180 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2018-11-23 11:44:25,762 WARN L180 SmtUtils]: Spent 433.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 120