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/AutomizerC.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 0.1.23-370d6ab [2018-11-14 16:45:13,891 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-14 16:45:13,893 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-14 16:45:13,910 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-14 16:45:13,910 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-14 16:45:13,911 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-14 16:45:13,913 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-14 16:45:13,916 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-14 16:45:13,920 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-14 16:45:13,921 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-14 16:45:13,930 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-14 16:45:13,930 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-14 16:45:13,931 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-14 16:45:13,932 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-14 16:45:13,933 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-14 16:45:13,934 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-14 16:45:13,935 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-14 16:45:13,936 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-14 16:45:13,938 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-14 16:45:13,940 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-14 16:45:13,941 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-14 16:45:13,942 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-14 16:45:13,944 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-11-14 16:45:13,952 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 [2018-11-14 16:45:13,973 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-14 16:45:13,974 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-14 16:45:13,974 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-14 16:45:13,975 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-14 16:45:13,975 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-14 16:45:13,975 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-14 16:45:13,976 INFO L133 SettingsManager]: * Use SBE=true [2018-11-14 16:45:13,976 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-14 16:45:13,976 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-14 16:45:13,976 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-14 16:45:13,976 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-14 16:45:13,977 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-14 16:45:13,978 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-14 16:45:13,978 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-14 16:45:13,978 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-11-14 16:45:13,978 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-11-14 16:45:13,978 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-14 16:45:13,979 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-14 16:45:13,979 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-14 16:45:13,979 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-14 16:45:13,979 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-14 16:45:13,980 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-14 16:45:13,981 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-14 16:45:13,981 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-14 16:45:13,981 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-14 16:45:13,982 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-14 16:45:13,982 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-14 16:45:13,982 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-11-14 16:45:13,982 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-14 16:45:13,982 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-11-14 16:45:13,983 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-11-14 16:45:13,983 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-14 16:45:14,049 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-14 16:45:14,062 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-14 16:45:14,066 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-14 16:45:14,068 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-14 16:45:14,068 INFO L276 PluginConnector]: CDTParser initialized [2018-11-14 16:45:14,069 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/jm2006_true-unreach-call.c.i.v+cfa-reducer.c [2018-11-14 16:45:14,129 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5fa16e021/857245d003ab46488f8e6927ca5f8f5f/FLAG5dac1440d [2018-11-14 16:45:14,592 INFO L298 CDTParser]: Found 1 translation units. [2018-11-14 16:45:14,592 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/jm2006_true-unreach-call.c.i.v+cfa-reducer.c [2018-11-14 16:45:14,600 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5fa16e021/857245d003ab46488f8e6927ca5f8f5f/FLAG5dac1440d [2018-11-14 16:45:14,619 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5fa16e021/857245d003ab46488f8e6927ca5f8f5f [2018-11-14 16:45:14,633 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-14 16:45:14,635 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-11-14 16:45:14,636 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-14 16:45:14,636 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-14 16:45:14,640 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-14 16:45:14,641 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 04:45:14" (1/1) ... [2018-11-14 16:45:14,644 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a160152 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:45:14, skipping insertion in model container [2018-11-14 16:45:14,645 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 04:45:14" (1/1) ... [2018-11-14 16:45:14,655 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-14 16:45:14,679 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-14 16:45:14,912 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-14 16:45:14,919 INFO L191 MainTranslator]: Completed pre-run [2018-11-14 16:45:14,941 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-14 16:45:14,958 INFO L195 MainTranslator]: Completed translation [2018-11-14 16:45:14,958 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:45:14 WrapperNode [2018-11-14 16:45:14,958 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-14 16:45:14,959 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-14 16:45:14,959 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-14 16:45:14,960 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-14 16:45:14,976 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:45:14" (1/1) ... [2018-11-14 16:45:14,976 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:45:14" (1/1) ... [2018-11-14 16:45:14,983 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:45:14" (1/1) ... [2018-11-14 16:45:14,984 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:45:14" (1/1) ... [2018-11-14 16:45:14,992 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:45:14" (1/1) ... [2018-11-14 16:45:14,995 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:45:14" (1/1) ... [2018-11-14 16:45:14,997 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:45:14" (1/1) ... [2018-11-14 16:45:14,999 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-14 16:45:14,999 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-14 16:45:15,000 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-14 16:45:15,000 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-14 16:45:15,001 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:45:14" (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 [2018-11-14 16:45:15,138 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-14 16:45:15,138 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-14 16:45:15,138 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-14 16:45:15,138 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-14 16:45:15,139 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2018-11-14 16:45:15,139 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-14 16:45:15,139 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-11-14 16:45:15,139 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-14 16:45:15,139 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-14 16:45:15,139 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-14 16:45:15,773 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-14 16:45:15,774 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 04:45:15 BoogieIcfgContainer [2018-11-14 16:45:15,774 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-14 16:45:15,775 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-14 16:45:15,776 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-14 16:45:15,779 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-14 16:45:15,779 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 04:45:14" (1/3) ... [2018-11-14 16:45:15,780 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f84f699 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 04:45:15, skipping insertion in model container [2018-11-14 16:45:15,780 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:45:14" (2/3) ... [2018-11-14 16:45:15,781 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f84f699 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 04:45:15, skipping insertion in model container [2018-11-14 16:45:15,781 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 04:45:15" (3/3) ... [2018-11-14 16:45:15,783 INFO L112 eAbstractionObserver]: Analyzing ICFG jm2006_true-unreach-call.c.i.v+cfa-reducer.c [2018-11-14 16:45:15,793 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-14 16:45:15,800 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-14 16:45:15,817 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-14 16:45:15,850 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-14 16:45:15,850 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-14 16:45:15,851 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-14 16:45:15,851 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-14 16:45:15,851 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-14 16:45:15,851 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-14 16:45:15,851 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-14 16:45:15,851 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-14 16:45:15,851 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-14 16:45:15,871 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2018-11-14 16:45:15,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-11-14 16:45:15,877 INFO L367 BasicCegarLoop]: Found error trace [2018-11-14 16:45:15,878 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-14 16:45:15,880 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-14 16:45:15,887 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-14 16:45:15,888 INFO L82 PathProgramCache]: Analyzing trace with hash -696314067, now seen corresponding path program 1 times [2018-11-14 16:45:15,893 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-14 16:45:15,893 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 [2018-11-14 16:45:15,922 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-14 16:45:15,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-14 16:45:15,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-14 16:45:15,989 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-14 16:45:16,216 INFO L256 TraceCheckUtils]: 0: Hoare triple {20#true} call ULTIMATE.init(); {20#true} is VALID [2018-11-14 16:45:16,220 INFO L273 TraceCheckUtils]: 1: Hoare triple {20#true} ~__return_main~0 := 0bv32;~__return_72~0 := 0bv32; {20#true} is VALID [2018-11-14 16:45:16,220 INFO L273 TraceCheckUtils]: 2: Hoare triple {20#true} assume true; {20#true} is VALID [2018-11-14 16:45:16,221 INFO L268 TraceCheckUtils]: 3: Hoare quadruple {20#true} {20#true} #32#return; {20#true} is VALID [2018-11-14 16:45:16,221 INFO L256 TraceCheckUtils]: 4: Hoare triple {20#true} call #t~ret3 := main(); {20#true} is VALID [2018-11-14 16:45:16,221 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 [2018-11-14 16:45:16,222 INFO L273 TraceCheckUtils]: 6: Hoare triple {20#true} assume !!~bvsge32(~main__i~0, 0bv32); {20#true} is VALID [2018-11-14 16:45:16,238 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 [2018-11-14 16:45:16,242 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 !(~main__x~0 != 0bv32); {50#(and (= main_~main__y~0 main_~main__j~0) (= (_ bv0 32) main_~main__i~0))} is VALID [2018-11-14 16:45:16,253 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 ~main__y~0 == 0bv32 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 [2018-11-14 16:45:16,255 INFO L273 TraceCheckUtils]: 10: Hoare triple {54#(= (_ bv1 32) main_~__VERIFIER_assert__cond~0)} assume ~__VERIFIER_assert__cond~0 == 0bv32; {21#false} is VALID [2018-11-14 16:45:16,255 INFO L273 TraceCheckUtils]: 11: Hoare triple {21#false} assume !false; {21#false} is VALID [2018-11-14 16:45:16,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-14 16:45:16,258 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-14 16:45:16,262 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-14 16:45:16,263 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-14 16:45:16,267 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2018-11-14 16:45:16,270 INFO L84 Accepts]: Finished accepts. word is accepted. [2018-11-14 16:45:16,279 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 5 states. [2018-11-14 16:45:16,456 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 12 edges. 12 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2018-11-14 16:45:16,456 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-14 16:45:16,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-14 16:45:16,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-14 16:45:16,470 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 5 states. [2018-11-14 16:45:17,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-14 16:45:17,168 INFO L93 Difference]: Finished difference Result 30 states and 36 transitions. [2018-11-14 16:45:17,168 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-14 16:45:17,168 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2018-11-14 16:45:17,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-14 16:45:17,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-11-14 16:45:17,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 36 transitions. [2018-11-14 16:45:17,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-11-14 16:45:17,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 36 transitions. [2018-11-14 16:45:17,187 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 5 states and 36 transitions. [2018-11-14 16:45:17,353 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 36 edges. 36 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2018-11-14 16:45:17,364 INFO L225 Difference]: With dead ends: 30 [2018-11-14 16:45:17,364 INFO L226 Difference]: Without dead ends: 14 [2018-11-14 16:45:17,368 INFO L604 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 [2018-11-14 16:45:17,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-11-14 16:45:17,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-11-14 16:45:17,431 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2018-11-14 16:45:17,432 INFO L82 GeneralOperation]: Start isEquivalent. First operand 14 states. Second operand 14 states. [2018-11-14 16:45:17,433 INFO L74 IsIncluded]: Start isIncluded. First operand 14 states. Second operand 14 states. [2018-11-14 16:45:17,433 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 14 states. [2018-11-14 16:45:17,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-14 16:45:17,436 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2018-11-14 16:45:17,436 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2018-11-14 16:45:17,437 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-14 16:45:17,437 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2018-11-14 16:45:17,437 INFO L74 IsIncluded]: Start isIncluded. First operand 14 states. Second operand 14 states. [2018-11-14 16:45:17,437 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 14 states. [2018-11-14 16:45:17,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-14 16:45:17,441 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2018-11-14 16:45:17,441 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2018-11-14 16:45:17,442 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-14 16:45:17,442 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2018-11-14 16:45:17,442 INFO L88 GeneralOperation]: Finished isEquivalent. [2018-11-14 16:45:17,442 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2018-11-14 16:45:17,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-11-14 16:45:17,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2018-11-14 16:45:17,446 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2018-11-14 16:45:17,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-14 16:45:17,447 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2018-11-14 16:45:17,447 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-14 16:45:17,447 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2018-11-14 16:45:17,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-11-14 16:45:17,448 INFO L367 BasicCegarLoop]: Found error trace [2018-11-14 16:45:17,448 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-14 16:45:17,448 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-14 16:45:17,449 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-14 16:45:17,449 INFO L82 PathProgramCache]: Analyzing trace with hash -112838900, now seen corresponding path program 1 times [2018-11-14 16:45:17,449 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-14 16:45:17,449 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 [2018-11-14 16:45:17,478 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-14 16:45:17,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-14 16:45:17,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-14 16:45:17,516 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-14 16:45:18,098 INFO L256 TraceCheckUtils]: 0: Hoare triple {148#true} call ULTIMATE.init(); {148#true} is VALID [2018-11-14 16:45:18,098 INFO L273 TraceCheckUtils]: 1: Hoare triple {148#true} ~__return_main~0 := 0bv32;~__return_72~0 := 0bv32; {148#true} is VALID [2018-11-14 16:45:18,099 INFO L273 TraceCheckUtils]: 2: Hoare triple {148#true} assume true; {148#true} is VALID [2018-11-14 16:45:18,099 INFO L268 TraceCheckUtils]: 3: Hoare quadruple {148#true} {148#true} #32#return; {148#true} is VALID [2018-11-14 16:45:18,099 INFO L256 TraceCheckUtils]: 4: Hoare triple {148#true} call #t~ret3 := main(); {148#true} is VALID [2018-11-14 16:45:18,100 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 [2018-11-14 16:45:18,100 INFO L273 TraceCheckUtils]: 6: Hoare triple {148#true} assume !!~bvsge32(~main__i~0, 0bv32); {148#true} is VALID [2018-11-14 16:45:18,109 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 [2018-11-14 16:45:18,156 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 ~main__x~0 != 0bv32;~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 [2018-11-14 16:45:18,157 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 !(~main__x~0 != 0bv32); {182#(and (= (_ bv1 32) main_~main__i~0) (= (bvadd main_~main__j~0 (_ bv4294967295 32)) main_~main__y~0))} is VALID [2018-11-14 16:45:18,159 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 ~main__y~0 == 0bv32 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 [2018-11-14 16:45:18,159 INFO L273 TraceCheckUtils]: 11: Hoare triple {186#(= (_ bv1 32) main_~__VERIFIER_assert__cond~0)} assume ~__VERIFIER_assert__cond~0 == 0bv32; {149#false} is VALID [2018-11-14 16:45:18,160 INFO L273 TraceCheckUtils]: 12: Hoare triple {149#false} assume !false; {149#false} is VALID [2018-11-14 16:45:18,164 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-14 16:45:18,165 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-14 16:45:18,571 INFO L273 TraceCheckUtils]: 12: Hoare triple {149#false} assume !false; {149#false} is VALID [2018-11-14 16:45:18,573 INFO L273 TraceCheckUtils]: 11: Hoare triple {196#(not (= main_~__VERIFIER_assert__cond~0 (_ bv0 32)))} assume ~__VERIFIER_assert__cond~0 == 0bv32; {149#false} is VALID [2018-11-14 16:45:18,575 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 ~main__y~0 == 0bv32 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 [2018-11-14 16:45:18,577 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 !(~main__x~0 != 0bv32); {200#(or (= (_ bv0 32) main_~main__y~0) (not (= main_~main__i~0 main_~main__j~0)))} is VALID [2018-11-14 16:45:18,579 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 ~main__x~0 != 0bv32;~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 [2018-11-14 16:45:18,580 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 [2018-11-14 16:45:18,580 INFO L273 TraceCheckUtils]: 6: Hoare triple {148#true} assume !!~bvsge32(~main__i~0, 0bv32); {148#true} is VALID [2018-11-14 16:45:18,580 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 [2018-11-14 16:45:18,581 INFO L256 TraceCheckUtils]: 4: Hoare triple {148#true} call #t~ret3 := main(); {148#true} is VALID [2018-11-14 16:45:18,581 INFO L268 TraceCheckUtils]: 3: Hoare quadruple {148#true} {148#true} #32#return; {148#true} is VALID [2018-11-14 16:45:18,582 INFO L273 TraceCheckUtils]: 2: Hoare triple {148#true} assume true; {148#true} is VALID [2018-11-14 16:45:18,582 INFO L273 TraceCheckUtils]: 1: Hoare triple {148#true} ~__return_main~0 := 0bv32;~__return_72~0 := 0bv32; {148#true} is VALID [2018-11-14 16:45:18,583 INFO L256 TraceCheckUtils]: 0: Hoare triple {148#true} call ULTIMATE.init(); {148#true} is VALID [2018-11-14 16:45:18,584 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-14 16:45:18,586 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-14 16:45:18,586 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2018-11-14 16:45:18,588 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 13 [2018-11-14 16:45:18,588 INFO L84 Accepts]: Finished accepts. word is accepted. [2018-11-14 16:45:18,588 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 10 states. [2018-11-14 16:45:18,675 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 18 edges. 18 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2018-11-14 16:45:18,675 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-14 16:45:18,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-14 16:45:18,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-11-14 16:45:18,676 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 10 states. [2018-11-14 16:45:19,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-14 16:45:19,549 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2018-11-14 16:45:19,549 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-14 16:45:19,549 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 13 [2018-11-14 16:45:19,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-14 16:45:19,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2018-11-14 16:45:19,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 25 transitions. [2018-11-14 16:45:19,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2018-11-14 16:45:19,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 25 transitions. [2018-11-14 16:45:19,555 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 11 states and 25 transitions. [2018-11-14 16:45:19,632 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 25 edges. 25 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2018-11-14 16:45:19,633 INFO L225 Difference]: With dead ends: 23 [2018-11-14 16:45:19,633 INFO L226 Difference]: Without dead ends: 17 [2018-11-14 16:45:19,635 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2018-11-14 16:45:19,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-11-14 16:45:19,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-11-14 16:45:19,655 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2018-11-14 16:45:19,656 INFO L82 GeneralOperation]: Start isEquivalent. First operand 17 states. Second operand 17 states. [2018-11-14 16:45:19,656 INFO L74 IsIncluded]: Start isIncluded. First operand 17 states. Second operand 17 states. [2018-11-14 16:45:19,656 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 17 states. [2018-11-14 16:45:19,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-14 16:45:19,659 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2018-11-14 16:45:19,659 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2018-11-14 16:45:19,660 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-14 16:45:19,660 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2018-11-14 16:45:19,660 INFO L74 IsIncluded]: Start isIncluded. First operand 17 states. Second operand 17 states. [2018-11-14 16:45:19,660 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 17 states. [2018-11-14 16:45:19,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-14 16:45:19,662 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2018-11-14 16:45:19,663 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2018-11-14 16:45:19,663 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-14 16:45:19,663 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2018-11-14 16:45:19,664 INFO L88 GeneralOperation]: Finished isEquivalent. [2018-11-14 16:45:19,664 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2018-11-14 16:45:19,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-11-14 16:45:19,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2018-11-14 16:45:19,666 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 13 [2018-11-14 16:45:19,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-14 16:45:19,666 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2018-11-14 16:45:19,666 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-14 16:45:19,666 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2018-11-14 16:45:19,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-11-14 16:45:19,667 INFO L367 BasicCegarLoop]: Found error trace [2018-11-14 16:45:19,667 INFO L375 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-14 16:45:19,668 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-14 16:45:19,668 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-14 16:45:19,668 INFO L82 PathProgramCache]: Analyzing trace with hash -550005011, now seen corresponding path program 2 times [2018-11-14 16:45:19,669 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-14 16:45:19,669 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 [2018-11-14 16:45:19,689 INFO L101 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2018-11-14 16:45:19,732 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-14 16:45:19,732 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-14 16:45:19,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-14 16:45:19,749 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-14 16:45:20,119 INFO L256 TraceCheckUtils]: 0: Hoare triple {337#true} call ULTIMATE.init(); {337#true} is VALID [2018-11-14 16:45:20,119 INFO L273 TraceCheckUtils]: 1: Hoare triple {337#true} ~__return_main~0 := 0bv32;~__return_72~0 := 0bv32; {337#true} is VALID [2018-11-14 16:45:20,120 INFO L273 TraceCheckUtils]: 2: Hoare triple {337#true} assume true; {337#true} is VALID [2018-11-14 16:45:20,120 INFO L268 TraceCheckUtils]: 3: Hoare quadruple {337#true} {337#true} #32#return; {337#true} is VALID [2018-11-14 16:45:20,121 INFO L256 TraceCheckUtils]: 4: Hoare triple {337#true} call #t~ret3 := main(); {337#true} is VALID [2018-11-14 16:45:20,121 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 [2018-11-14 16:45:20,121 INFO L273 TraceCheckUtils]: 6: Hoare triple {337#true} assume !!~bvsge32(~main__i~0, 0bv32); {337#true} is VALID [2018-11-14 16:45:20,123 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 [2018-11-14 16:45:20,171 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 ~main__x~0 != 0bv32;~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 [2018-11-14 16:45:20,218 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 ~main__x~0 != 0bv32;~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 [2018-11-14 16:45:20,266 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 ~main__x~0 != 0bv32;~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 [2018-11-14 16:45:20,316 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 ~main__x~0 != 0bv32;~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 [2018-11-14 16:45:20,318 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 !(~main__x~0 != 0bv32); {383#(and (= (bvadd main_~main__y~0 (_ bv4 32)) main_~main__j~0) (= (_ bv4 32) main_~main__i~0))} is VALID [2018-11-14 16:45:20,323 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 ~main__y~0 == 0bv32 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 [2018-11-14 16:45:20,324 INFO L273 TraceCheckUtils]: 14: Hoare triple {387#(= (_ bv1 32) main_~__VERIFIER_assert__cond~0)} assume ~__VERIFIER_assert__cond~0 == 0bv32; {338#false} is VALID [2018-11-14 16:45:20,324 INFO L273 TraceCheckUtils]: 15: Hoare triple {338#false} assume !false; {338#false} is VALID [2018-11-14 16:45:20,325 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-14 16:45:20,326 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-14 16:45:20,800 INFO L273 TraceCheckUtils]: 15: Hoare triple {338#false} assume !false; {338#false} is VALID [2018-11-14 16:45:20,802 INFO L273 TraceCheckUtils]: 14: Hoare triple {397#(not (= main_~__VERIFIER_assert__cond~0 (_ bv0 32)))} assume ~__VERIFIER_assert__cond~0 == 0bv32; {338#false} is VALID [2018-11-14 16:45:20,822 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 ~main__y~0 == 0bv32 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 [2018-11-14 16:45:20,836 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 !(~main__x~0 != 0bv32); {401#(or (= (_ bv0 32) main_~main__y~0) (not (= main_~main__i~0 main_~main__j~0)))} is VALID [2018-11-14 16:45:20,838 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 ~main__x~0 != 0bv32;~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 [2018-11-14 16:45:20,840 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 ~main__x~0 != 0bv32;~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 [2018-11-14 16:45:20,843 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 ~main__x~0 != 0bv32;~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 [2018-11-14 16:45:20,845 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 ~main__x~0 != 0bv32;~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 [2018-11-14 16:45:20,847 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 [2018-11-14 16:45:20,848 INFO L273 TraceCheckUtils]: 6: Hoare triple {337#true} assume !!~bvsge32(~main__i~0, 0bv32); {337#true} is VALID [2018-11-14 16:45:20,848 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 [2018-11-14 16:45:20,848 INFO L256 TraceCheckUtils]: 4: Hoare triple {337#true} call #t~ret3 := main(); {337#true} is VALID [2018-11-14 16:45:20,849 INFO L268 TraceCheckUtils]: 3: Hoare quadruple {337#true} {337#true} #32#return; {337#true} is VALID [2018-11-14 16:45:20,849 INFO L273 TraceCheckUtils]: 2: Hoare triple {337#true} assume true; {337#true} is VALID [2018-11-14 16:45:20,850 INFO L273 TraceCheckUtils]: 1: Hoare triple {337#true} ~__return_main~0 := 0bv32;~__return_72~0 := 0bv32; {337#true} is VALID [2018-11-14 16:45:20,850 INFO L256 TraceCheckUtils]: 0: Hoare triple {337#true} call ULTIMATE.init(); {337#true} is VALID [2018-11-14 16:45:20,851 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-14 16:45:20,853 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-14 16:45:20,853 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2018-11-14 16:45:20,854 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 16 [2018-11-14 16:45:20,854 INFO L84 Accepts]: Finished accepts. word is accepted. [2018-11-14 16:45:20,854 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 16 states. [2018-11-14 16:45:21,128 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 24 edges. 24 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2018-11-14 16:45:21,128 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-11-14 16:45:21,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-11-14 16:45:21,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2018-11-14 16:45:21,130 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 16 states. [2018-11-14 16:45:23,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-14 16:45:23,124 INFO L93 Difference]: Finished difference Result 29 states and 34 transitions. [2018-11-14 16:45:23,125 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-11-14 16:45:23,125 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 16 [2018-11-14 16:45:23,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-14 16:45:23,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-11-14 16:45:23,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 34 transitions. [2018-11-14 16:45:23,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-11-14 16:45:23,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 34 transitions. [2018-11-14 16:45:23,131 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 17 states and 34 transitions. [2018-11-14 16:45:23,411 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 34 edges. 34 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2018-11-14 16:45:23,412 INFO L225 Difference]: With dead ends: 29 [2018-11-14 16:45:23,412 INFO L226 Difference]: Without dead ends: 23 [2018-11-14 16:45:23,413 INFO L604 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 [2018-11-14 16:45:23,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-11-14 16:45:23,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-11-14 16:45:23,490 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2018-11-14 16:45:23,490 INFO L82 GeneralOperation]: Start isEquivalent. First operand 23 states. Second operand 23 states. [2018-11-14 16:45:23,490 INFO L74 IsIncluded]: Start isIncluded. First operand 23 states. Second operand 23 states. [2018-11-14 16:45:23,490 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 23 states. [2018-11-14 16:45:23,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-14 16:45:23,492 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2018-11-14 16:45:23,493 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2018-11-14 16:45:23,493 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-14 16:45:23,493 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2018-11-14 16:45:23,493 INFO L74 IsIncluded]: Start isIncluded. First operand 23 states. Second operand 23 states. [2018-11-14 16:45:23,494 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 23 states. [2018-11-14 16:45:23,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-14 16:45:23,496 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2018-11-14 16:45:23,496 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2018-11-14 16:45:23,496 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-14 16:45:23,497 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2018-11-14 16:45:23,497 INFO L88 GeneralOperation]: Finished isEquivalent. [2018-11-14 16:45:23,497 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2018-11-14 16:45:23,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-11-14 16:45:23,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2018-11-14 16:45:23,499 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 16 [2018-11-14 16:45:23,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-14 16:45:23,499 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2018-11-14 16:45:23,500 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-11-14 16:45:23,500 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2018-11-14 16:45:23,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-11-14 16:45:23,500 INFO L367 BasicCegarLoop]: Found error trace [2018-11-14 16:45:23,501 INFO L375 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-14 16:45:23,501 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-14 16:45:23,501 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-14 16:45:23,501 INFO L82 PathProgramCache]: Analyzing trace with hash 1858359949, now seen corresponding path program 3 times [2018-11-14 16:45:23,502 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-14 16:45:23,502 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 [2018-11-14 16:45:23,523 INFO L101 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2018-11-14 16:45:23,665 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2018-11-14 16:45:23,665 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-14 16:45:23,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-14 16:45:23,694 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-14 16:45:24,426 INFO L256 TraceCheckUtils]: 0: Hoare triple {594#true} call ULTIMATE.init(); {594#true} is VALID [2018-11-14 16:45:24,426 INFO L273 TraceCheckUtils]: 1: Hoare triple {594#true} ~__return_main~0 := 0bv32;~__return_72~0 := 0bv32; {594#true} is VALID [2018-11-14 16:45:24,426 INFO L273 TraceCheckUtils]: 2: Hoare triple {594#true} assume true; {594#true} is VALID [2018-11-14 16:45:24,427 INFO L268 TraceCheckUtils]: 3: Hoare quadruple {594#true} {594#true} #32#return; {594#true} is VALID [2018-11-14 16:45:24,427 INFO L256 TraceCheckUtils]: 4: Hoare triple {594#true} call #t~ret3 := main(); {594#true} is VALID [2018-11-14 16:45:24,427 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 [2018-11-14 16:45:24,428 INFO L273 TraceCheckUtils]: 6: Hoare triple {594#true} assume !!~bvsge32(~main__i~0, 0bv32); {594#true} is VALID [2018-11-14 16:45:24,436 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 [2018-11-14 16:45:24,470 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 ~main__x~0 != 0bv32;~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 [2018-11-14 16:45:24,519 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 ~main__x~0 != 0bv32;~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 [2018-11-14 16:45:24,575 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 ~main__x~0 != 0bv32;~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 [2018-11-14 16:45:24,624 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 ~main__x~0 != 0bv32;~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 [2018-11-14 16:45:24,681 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 ~main__x~0 != 0bv32;~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 [2018-11-14 16:45:24,737 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 ~main__x~0 != 0bv32;~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 [2018-11-14 16:45:24,792 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 ~main__x~0 != 0bv32;~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 [2018-11-14 16:45:24,880 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 ~main__x~0 != 0bv32;~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 [2018-11-14 16:45:24,919 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 ~main__x~0 != 0bv32;~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 [2018-11-14 16:45:24,973 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 ~main__x~0 != 0bv32;~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 [2018-11-14 16:45:24,974 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 !(~main__x~0 != 0bv32); {664#(and (= (bvadd main_~main__j~0 (_ bv4294967286 32)) main_~main__y~0) (= (_ bv10 32) main_~main__i~0))} is VALID [2018-11-14 16:45:24,975 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 ~main__y~0 == 0bv32 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 [2018-11-14 16:45:24,976 INFO L273 TraceCheckUtils]: 20: Hoare triple {668#(= (_ bv1 32) main_~__VERIFIER_assert__cond~0)} assume ~__VERIFIER_assert__cond~0 == 0bv32; {595#false} is VALID [2018-11-14 16:45:24,976 INFO L273 TraceCheckUtils]: 21: Hoare triple {595#false} assume !false; {595#false} is VALID [2018-11-14 16:45:24,979 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-14 16:45:24,979 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-14 16:45:26,005 INFO L273 TraceCheckUtils]: 21: Hoare triple {595#false} assume !false; {595#false} is VALID [2018-11-14 16:45:26,006 INFO L273 TraceCheckUtils]: 20: Hoare triple {678#(not (= main_~__VERIFIER_assert__cond~0 (_ bv0 32)))} assume ~__VERIFIER_assert__cond~0 == 0bv32; {595#false} is VALID [2018-11-14 16:45:26,007 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 ~main__y~0 == 0bv32 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 [2018-11-14 16:45:26,008 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 !(~main__x~0 != 0bv32); {682#(or (= (_ bv0 32) main_~main__y~0) (not (= main_~main__i~0 main_~main__j~0)))} is VALID [2018-11-14 16:45:26,010 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 ~main__x~0 != 0bv32;~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 [2018-11-14 16:45:26,013 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 ~main__x~0 != 0bv32;~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 [2018-11-14 16:45:26,016 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 ~main__x~0 != 0bv32;~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 [2018-11-14 16:45:26,019 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 ~main__x~0 != 0bv32;~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 [2018-11-14 16:45:26,022 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 ~main__x~0 != 0bv32;~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 [2018-11-14 16:45:26,023 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 ~main__x~0 != 0bv32;~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 [2018-11-14 16:45:26,025 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 ~main__x~0 != 0bv32;~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 [2018-11-14 16:45:26,027 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 ~main__x~0 != 0bv32;~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 [2018-11-14 16:45:26,030 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 ~main__x~0 != 0bv32;~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 [2018-11-14 16:45:26,034 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 ~main__x~0 != 0bv32;~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 [2018-11-14 16:45:26,040 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 [2018-11-14 16:45:26,040 INFO L273 TraceCheckUtils]: 6: Hoare triple {594#true} assume !!~bvsge32(~main__i~0, 0bv32); {594#true} is VALID [2018-11-14 16:45:26,040 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 [2018-11-14 16:45:26,041 INFO L256 TraceCheckUtils]: 4: Hoare triple {594#true} call #t~ret3 := main(); {594#true} is VALID [2018-11-14 16:45:26,041 INFO L268 TraceCheckUtils]: 3: Hoare quadruple {594#true} {594#true} #32#return; {594#true} is VALID [2018-11-14 16:45:26,041 INFO L273 TraceCheckUtils]: 2: Hoare triple {594#true} assume true; {594#true} is VALID [2018-11-14 16:45:26,042 INFO L273 TraceCheckUtils]: 1: Hoare triple {594#true} ~__return_main~0 := 0bv32;~__return_72~0 := 0bv32; {594#true} is VALID [2018-11-14 16:45:26,042 INFO L256 TraceCheckUtils]: 0: Hoare triple {594#true} call ULTIMATE.init(); {594#true} is VALID [2018-11-14 16:45:26,045 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-14 16:45:26,054 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-14 16:45:26,054 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 28 [2018-11-14 16:45:26,055 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 22 [2018-11-14 16:45:26,055 INFO L84 Accepts]: Finished accepts. word is accepted. [2018-11-14 16:45:26,055 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 28 states. [2018-11-14 16:45:26,569 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 36 edges. 36 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2018-11-14 16:45:26,569 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-11-14 16:45:26,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-11-14 16:45:26,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=578, Unknown=0, NotChecked=0, Total=756 [2018-11-14 16:45:26,571 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 28 states. [2018-11-14 16:45:44,855 WARN L179 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2018-11-14 16:45:55,419 WARN L179 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2018-11-14 16:45:55,863 WARN L179 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 60 [2018-11-14 16:46:05,019 WARN L179 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 63 [2018-11-14 16:46:16,767 WARN L179 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2018-11-14 16:46:43,233 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2018-11-14 16:46:43,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-14 16:46:43,354 INFO L93 Difference]: Finished difference Result 41 states and 52 transitions. [2018-11-14 16:46:43,354 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-11-14 16:46:43,354 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 22 [2018-11-14 16:46:43,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-14 16:46:43,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-11-14 16:46:43,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 52 transitions. [2018-11-14 16:46:43,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-11-14 16:46:43,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 52 transitions. [2018-11-14 16:46:43,363 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 29 states and 52 transitions. [2018-11-14 16:46:46,074 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 52 edges. 51 inductive. 0 not inductive. 1 times theorem prover too weak to decide inductivity. [2018-11-14 16:46:46,076 INFO L225 Difference]: With dead ends: 41 [2018-11-14 16:46:46,076 INFO L226 Difference]: Without dead ends: 35 [2018-11-14 16:46:46,078 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 75.3s TimeCoverageRelationStatistics Valid=549, Invalid=1251, Unknown=6, NotChecked=0, Total=1806 [2018-11-14 16:46:46,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-11-14 16:46:46,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-11-14 16:46:46,291 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2018-11-14 16:46:46,291 INFO L82 GeneralOperation]: Start isEquivalent. First operand 35 states. Second operand 35 states. [2018-11-14 16:46:46,291 INFO L74 IsIncluded]: Start isIncluded. First operand 35 states. Second operand 35 states. [2018-11-14 16:46:46,291 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 35 states. [2018-11-14 16:46:46,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-14 16:46:46,294 INFO L93 Difference]: Finished difference Result 35 states and 35 transitions. [2018-11-14 16:46:46,294 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2018-11-14 16:46:46,295 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-14 16:46:46,295 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2018-11-14 16:46:46,295 INFO L74 IsIncluded]: Start isIncluded. First operand 35 states. Second operand 35 states. [2018-11-14 16:46:46,295 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 35 states. [2018-11-14 16:46:46,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-14 16:46:46,299 INFO L93 Difference]: Finished difference Result 35 states and 35 transitions. [2018-11-14 16:46:46,299 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2018-11-14 16:46:46,301 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-14 16:46:46,302 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2018-11-14 16:46:46,302 INFO L88 GeneralOperation]: Finished isEquivalent. [2018-11-14 16:46:46,302 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2018-11-14 16:46:46,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-11-14 16:46:46,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2018-11-14 16:46:46,304 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 22 [2018-11-14 16:46:46,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-14 16:46:46,305 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2018-11-14 16:46:46,305 INFO L481 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-11-14 16:46:46,305 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2018-11-14 16:46:46,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-11-14 16:46:46,306 INFO L367 BasicCegarLoop]: Found error trace [2018-11-14 16:46:46,306 INFO L375 BasicCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-14 16:46:46,307 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-14 16:46:46,307 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-14 16:46:46,307 INFO L82 PathProgramCache]: Analyzing trace with hash -944889395, now seen corresponding path program 4 times [2018-11-14 16:46:46,308 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-14 16:46:46,308 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 [2018-11-14 16:46:46,329 INFO L101 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-14 16:46:46,429 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-14 16:46:46,429 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-14 16:46:46,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-14 16:46:46,495 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-14 16:46:48,800 INFO L256 TraceCheckUtils]: 0: Hoare triple {983#true} call ULTIMATE.init(); {983#true} is VALID [2018-11-14 16:46:48,801 INFO L273 TraceCheckUtils]: 1: Hoare triple {983#true} ~__return_main~0 := 0bv32;~__return_72~0 := 0bv32; {983#true} is VALID [2018-11-14 16:46:48,801 INFO L273 TraceCheckUtils]: 2: Hoare triple {983#true} assume true; {983#true} is VALID [2018-11-14 16:46:48,801 INFO L268 TraceCheckUtils]: 3: Hoare quadruple {983#true} {983#true} #32#return; {983#true} is VALID [2018-11-14 16:46:48,801 INFO L256 TraceCheckUtils]: 4: Hoare triple {983#true} call #t~ret3 := main(); {983#true} is VALID [2018-11-14 16:46:48,802 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 [2018-11-14 16:46:48,802 INFO L273 TraceCheckUtils]: 6: Hoare triple {983#true} assume !!~bvsge32(~main__i~0, 0bv32); {983#true} is VALID [2018-11-14 16:46:48,803 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 [2018-11-14 16:46:48,843 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 ~main__x~0 != 0bv32;~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 [2018-11-14 16:46:48,896 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 ~main__x~0 != 0bv32;~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 [2018-11-14 16:46:48,947 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 ~main__x~0 != 0bv32;~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 [2018-11-14 16:46:49,000 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 ~main__x~0 != 0bv32;~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 [2018-11-14 16:46:49,065 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 ~main__x~0 != 0bv32;~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 [2018-11-14 16:46:49,111 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 ~main__x~0 != 0bv32;~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 [2018-11-14 16:46:49,168 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 ~main__x~0 != 0bv32;~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 [2018-11-14 16:46:49,220 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 ~main__x~0 != 0bv32;~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 [2018-11-14 16:46:49,273 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 ~main__x~0 != 0bv32;~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 [2018-11-14 16:46:49,326 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 ~main__x~0 != 0bv32;~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 [2018-11-14 16:46:49,390 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 ~main__x~0 != 0bv32;~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 [2018-11-14 16:46:49,446 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 ~main__x~0 != 0bv32;~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 [2018-11-14 16:46:49,493 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 ~main__x~0 != 0bv32;~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 [2018-11-14 16:46:49,564 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 ~main__x~0 != 0bv32;~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 [2018-11-14 16:46:49,622 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 ~main__x~0 != 0bv32;~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 [2018-11-14 16:46:49,680 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 ~main__x~0 != 0bv32;~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 [2018-11-14 16:46:49,743 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 ~main__x~0 != 0bv32;~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 [2018-11-14 16:46:49,798 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 ~main__x~0 != 0bv32;~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 [2018-11-14 16:46:49,858 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 ~main__x~0 != 0bv32;~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 [2018-11-14 16:46:49,915 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 ~main__x~0 != 0bv32;~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 [2018-11-14 16:46:49,984 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 ~main__x~0 != 0bv32;~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 [2018-11-14 16:46:50,039 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 ~main__x~0 != 0bv32;~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 [2018-11-14 16:46:50,040 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 !(~main__x~0 != 0bv32); {1101#(and (= (_ bv22 32) main_~main__i~0) (= (bvadd main_~main__j~0 (_ bv4294967274 32)) main_~main__y~0))} is VALID [2018-11-14 16:46:50,041 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 ~main__y~0 == 0bv32 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 [2018-11-14 16:46:50,041 INFO L273 TraceCheckUtils]: 32: Hoare triple {1105#(= (_ bv1 32) main_~__VERIFIER_assert__cond~0)} assume ~__VERIFIER_assert__cond~0 == 0bv32; {984#false} is VALID [2018-11-14 16:46:50,042 INFO L273 TraceCheckUtils]: 33: Hoare triple {984#false} assume !false; {984#false} is VALID [2018-11-14 16:46:50,046 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-14 16:46:50,047 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-14 16:46:52,898 INFO L273 TraceCheckUtils]: 33: Hoare triple {984#false} assume !false; {984#false} is VALID [2018-11-14 16:46:52,899 INFO L273 TraceCheckUtils]: 32: Hoare triple {1115#(not (= main_~__VERIFIER_assert__cond~0 (_ bv0 32)))} assume ~__VERIFIER_assert__cond~0 == 0bv32; {984#false} is VALID [2018-11-14 16:46:52,900 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 ~main__y~0 == 0bv32 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 [2018-11-14 16:46:52,901 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 !(~main__x~0 != 0bv32); {1119#(or (= (_ bv0 32) main_~main__y~0) (not (= main_~main__i~0 main_~main__j~0)))} is VALID [2018-11-14 16:46:52,904 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 ~main__x~0 != 0bv32;~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 [2018-11-14 16:46:52,906 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 ~main__x~0 != 0bv32;~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 [2018-11-14 16:46:52,908 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 ~main__x~0 != 0bv32;~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 [2018-11-14 16:46:52,910 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 ~main__x~0 != 0bv32;~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 [2018-11-14 16:46:52,912 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 ~main__x~0 != 0bv32;~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 [2018-11-14 16:46:52,913 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 ~main__x~0 != 0bv32;~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 [2018-11-14 16:46:52,915 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 ~main__x~0 != 0bv32;~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 [2018-11-14 16:46:52,918 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 ~main__x~0 != 0bv32;~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 [2018-11-14 16:46:52,921 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 ~main__x~0 != 0bv32;~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 [2018-11-14 16:46:52,923 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 ~main__x~0 != 0bv32;~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 [2018-11-14 16:46:52,926 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 ~main__x~0 != 0bv32;~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 [2018-11-14 16:46:52,929 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 ~main__x~0 != 0bv32;~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 [2018-11-14 16:46:52,932 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 ~main__x~0 != 0bv32;~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 [2018-11-14 16:46:52,934 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 ~main__x~0 != 0bv32;~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 [2018-11-14 16:46:52,937 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 ~main__x~0 != 0bv32;~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 [2018-11-14 16:46:52,939 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 ~main__x~0 != 0bv32;~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 [2018-11-14 16:46:52,942 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 ~main__x~0 != 0bv32;~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 [2018-11-14 16:46:52,945 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 ~main__x~0 != 0bv32;~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 [2018-11-14 16:46:52,948 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 ~main__x~0 != 0bv32;~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 [2018-11-14 16:46:52,950 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 ~main__x~0 != 0bv32;~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 [2018-11-14 16:46:52,953 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 ~main__x~0 != 0bv32;~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 [2018-11-14 16:46:52,955 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 ~main__x~0 != 0bv32;~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 [2018-11-14 16:46:52,956 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 [2018-11-14 16:46:52,956 INFO L273 TraceCheckUtils]: 6: Hoare triple {983#true} assume !!~bvsge32(~main__i~0, 0bv32); {983#true} is VALID [2018-11-14 16:46:52,956 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 [2018-11-14 16:46:52,957 INFO L256 TraceCheckUtils]: 4: Hoare triple {983#true} call #t~ret3 := main(); {983#true} is VALID [2018-11-14 16:46:52,957 INFO L268 TraceCheckUtils]: 3: Hoare quadruple {983#true} {983#true} #32#return; {983#true} is VALID [2018-11-14 16:46:52,957 INFO L273 TraceCheckUtils]: 2: Hoare triple {983#true} assume true; {983#true} is VALID [2018-11-14 16:46:52,957 INFO L273 TraceCheckUtils]: 1: Hoare triple {983#true} ~__return_main~0 := 0bv32;~__return_72~0 := 0bv32; {983#true} is VALID [2018-11-14 16:46:52,957 INFO L256 TraceCheckUtils]: 0: Hoare triple {983#true} call ULTIMATE.init(); {983#true} is VALID [2018-11-14 16:46:52,961 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-14 16:46:52,963 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-14 16:46:52,963 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 52 [2018-11-14 16:46:52,964 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 34 [2018-11-14 16:46:52,964 INFO L84 Accepts]: Finished accepts. word is accepted. [2018-11-14 16:46:52,965 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 52 states. [2018-11-14 16:46:54,092 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 60 edges. 60 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2018-11-14 16:46:54,092 INFO L459 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-11-14 16:46:54,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-11-14 16:46:54,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=634, Invalid=2018, Unknown=0, NotChecked=0, Total=2652 [2018-11-14 16:46:54,094 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand 52 states.