java -ea -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline_WitnessPrinter.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/loop-industry-pattern/mod3_true-unreach-call.c.v+sep-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-61f4311 [2018-11-23 11:45:04,391 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-23 11:45:04,393 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-23 11:45:04,405 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-23 11:45:04,406 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-23 11:45:04,407 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-23 11:45:04,408 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-23 11:45:04,410 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-23 11:45:04,412 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-23 11:45:04,412 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-23 11:45:04,413 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-23 11:45:04,414 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-23 11:45:04,415 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-23 11:45:04,416 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-23 11:45:04,417 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-23 11:45:04,418 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-23 11:45:04,419 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-23 11:45:04,420 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-23 11:45:04,423 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-23 11:45:04,424 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-23 11:45:04,425 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-23 11:45:04,426 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-23 11:45:04,429 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-23 11:45:04,429 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-23 11:45:04,430 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-23 11:45:04,431 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-23 11:45:04,432 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-23 11:45:04,432 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-23 11:45:04,433 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-23 11:45:04,434 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-23 11:45:04,435 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-23 11:45:04,435 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-23 11:45:04,436 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-23 11:45:04,436 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-23 11:45:04,437 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-23 11:45:04,438 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-23 11:45:04,438 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-11-23 11:45:04,454 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-23 11:45:04,454 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-23 11:45:04,455 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-23 11:45:04,455 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-23 11:45:04,456 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-23 11:45:04,456 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-23 11:45:04,456 INFO L133 SettingsManager]: * Use SBE=true [2018-11-23 11:45:04,456 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-23 11:45:04,457 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-23 11:45:04,457 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-23 11:45:04,457 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-23 11:45:04,457 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-23 11:45:04,457 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-23 11:45:04,458 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-23 11:45:04,458 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-11-23 11:45:04,458 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-11-23 11:45:04,458 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-23 11:45:04,458 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-23 11:45:04,458 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-23 11:45:04,459 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-23 11:45:04,459 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-23 11:45:04,459 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-23 11:45:04,459 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-23 11:45:04,459 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-23 11:45:04,460 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-23 11:45:04,460 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-23 11:45:04,460 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-23 11:45:04,460 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-23 11:45:04,460 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-11-23 11:45:04,461 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-23 11:45:04,461 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-11-23 11:45:04,461 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-11-23 11:45:04,461 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-23 11:45:04,506 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-23 11:45:04,520 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-23 11:45:04,524 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-23 11:45:04,526 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-23 11:45:04,526 INFO L276 PluginConnector]: CDTParser initialized [2018-11-23 11:45:04,527 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-industry-pattern/mod3_true-unreach-call.c.v+sep-reducer.c [2018-11-23 11:45:04,591 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb5e54510/b021a92455a048f3b4bfb4c7151f59ae/FLAGdd009d080 [2018-11-23 11:45:05,029 INFO L307 CDTParser]: Found 1 translation units. [2018-11-23 11:45:05,029 INFO L161 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-industry-pattern/mod3_true-unreach-call.c.v+sep-reducer.c [2018-11-23 11:45:05,038 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb5e54510/b021a92455a048f3b4bfb4c7151f59ae/FLAGdd009d080 [2018-11-23 11:45:05,415 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb5e54510/b021a92455a048f3b4bfb4c7151f59ae [2018-11-23 11:45:05,427 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-23 11:45:05,429 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-23 11:45:05,430 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-23 11:45:05,430 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-23 11:45:05,435 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-23 11:45:05,437 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:45:05" (1/1) ... [2018-11-23 11:45:05,440 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d13a4e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:45:05, skipping insertion in model container [2018-11-23 11:45:05,441 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:45:05" (1/1) ... [2018-11-23 11:45:05,452 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-23 11:45:05,482 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-23 11:45:05,765 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 11:45:05,775 INFO L191 MainTranslator]: Completed pre-run [2018-11-23 11:45:05,811 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 11:45:05,830 INFO L195 MainTranslator]: Completed translation [2018-11-23 11:45:05,831 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:45:05 WrapperNode [2018-11-23 11:45:05,831 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-23 11:45:05,833 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-23 11:45:05,833 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-23 11:45:05,833 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-23 11:45:05,844 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:45:05" (1/1) ... [2018-11-23 11:45:05,855 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:45:05" (1/1) ... [2018-11-23 11:45:05,865 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-23 11:45:05,866 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-23 11:45:05,866 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-23 11:45:05,866 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-23 11:45:05,878 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:45:05" (1/1) ... [2018-11-23 11:45:05,879 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:45:05" (1/1) ... [2018-11-23 11:45:05,881 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:45:05" (1/1) ... [2018-11-23 11:45:05,881 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:45:05" (1/1) ... [2018-11-23 11:45:05,901 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:45:05" (1/1) ... [2018-11-23 11:45:05,907 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:45:05" (1/1) ... [2018-11-23 11:45:05,908 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:45:05" (1/1) ... [2018-11-23 11:45:05,911 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-23 11:45:05,912 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-23 11:45:05,912 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-23 11:45:05,912 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-23 11:45:05,913 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:45:05" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-23 11:45:06,049 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-23 11:45:06,050 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-23 11:45:06,050 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-23 11:45:06,050 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-23 11:45:06,050 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-23 11:45:06,050 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-23 11:45:06,866 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-23 11:45:06,867 INFO L280 CfgBuilder]: Removed 0 assue(true) statements. [2018-11-23 11:45:06,867 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:45:06 BoogieIcfgContainer [2018-11-23 11:45:06,867 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-23 11:45:06,869 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-23 11:45:06,869 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-23 11:45:06,872 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-23 11:45:06,873 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 11:45:05" (1/3) ... [2018-11-23 11:45:06,874 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e96a70f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:45:06, skipping insertion in model container [2018-11-23 11:45:06,874 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:45:05" (2/3) ... [2018-11-23 11:45:06,875 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e96a70f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:45:06, skipping insertion in model container [2018-11-23 11:45:06,875 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:45:06" (3/3) ... [2018-11-23 11:45:06,877 INFO L112 eAbstractionObserver]: Analyzing ICFG mod3_true-unreach-call.c.v+sep-reducer.c [2018-11-23 11:45:06,887 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-23 11:45:06,895 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-23 11:45:06,913 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-23 11:45:06,953 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-23 11:45:06,954 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-23 11:45:06,955 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-23 11:45:06,955 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-23 11:45:06,956 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-23 11:45:06,956 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-23 11:45:06,956 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-23 11:45:06,956 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-23 11:45:06,957 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-23 11:45:06,976 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2018-11-23 11:45:06,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-11-23 11:45:06,982 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 11:45:06,983 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 11:45:06,985 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 11:45:06,990 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 11:45:06,991 INFO L82 PathProgramCache]: Analyzing trace with hash 453243256, now seen corresponding path program 1 times [2018-11-23 11:45:06,994 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-23 11:45:06,995 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 2 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-23 11:45:07,012 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 11:45:31,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 11:45:33,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2018-11-23 11:45:33,979 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 11:45:48,829 WARN L180 SmtUtils]: Spent 10.12 s on a formula simplification that was a NOOP. DAG size: 20 [2018-11-23 11:45:54,899 WARN L832 $PredicateComparison]: unable to prove that (exists ((main_~main__x~0 (_ BitVec 32))) (and (not (= (_ bv0 32) (bvurem main_~main__x~0 (_ bv3 32)))) (= (_ bv1 32) (bvurem (bvadd main_~main__x~0 (_ bv4294967294 32)) (_ bv3 32))))) is different from false [2018-11-23 11:45:56,911 WARN L854 $PredicateComparison]: unable to prove that (exists ((main_~main__x~0 (_ BitVec 32))) (and (not (= (_ bv0 32) (bvurem main_~main__x~0 (_ bv3 32)))) (= (_ bv1 32) (bvurem (bvadd main_~main__x~0 (_ bv4294967294 32)) (_ bv3 32))))) is different from true [2018-11-23 11:45:56,915 INFO L256 TraceCheckUtils]: 0: Hoare triple {31#true} call ULTIMATE.init(); {31#true} is VALID [2018-11-23 11:45:56,920 INFO L273 TraceCheckUtils]: 1: Hoare triple {31#true} ~__return_main~0 := 0bv32;~__tmp_31_0~0 := 0bv32;~__tmp_28_0~0 := 0bv32;~__return_65~0 := 0bv32;~__tmp_22_0~0 := 0bv32;~__tmp_22_1~0 := 0bv32;~__tmp_25_0~0 := 0bv32;~__tmp_25_1~0 := 0bv32; {31#true} is VALID [2018-11-23 11:45:56,921 INFO L273 TraceCheckUtils]: 2: Hoare triple {31#true} assume true; {31#true} is VALID [2018-11-23 11:45:56,921 INFO L268 TraceCheckUtils]: 3: Hoare quadruple {31#true} {31#true} #70#return; {31#true} is VALID [2018-11-23 11:45:56,922 INFO L256 TraceCheckUtils]: 4: Hoare triple {31#true} call #t~ret4 := main(); {31#true} is VALID [2018-11-23 11:45:56,922 INFO L273 TraceCheckUtils]: 5: Hoare triple {31#true} havoc ~main__x~0;~main__y~0 := 1bv32; {31#true} is VALID [2018-11-23 11:45:56,923 INFO L273 TraceCheckUtils]: 6: Hoare triple {31#true} havoc ~main____CPAchecker_TMP_0~0;~main____CPAchecker_TMP_0~0 := #t~nondet0;havoc #t~nondet0; {31#true} is VALID [2018-11-23 11:45:56,923 INFO L273 TraceCheckUtils]: 7: Hoare triple {31#true} assume !(0bv32 == ~main____CPAchecker_TMP_0~0); {31#true} is VALID [2018-11-23 11:45:58,949 INFO L273 TraceCheckUtils]: 8: Hoare triple {31#true} assume 1bv32 == ~bvurem32(~main__x~0, 3bv32);~main__x~0 := ~bvadd32(2bv32, ~main__x~0);~main__y~0 := 0bv32;~__tmp_31_0~0 := ~main____CPAchecker_TMP_0~0; {60#(= (_ bv1 32) (bvurem (bvadd main_~main__x~0 (_ bv4294967294 32)) (_ bv3 32)))} is UNKNOWN [2018-11-23 11:45:58,951 INFO L273 TraceCheckUtils]: 9: Hoare triple {60#(= (_ bv1 32) (bvurem (bvadd main_~main__x~0 (_ bv4294967294 32)) (_ bv3 32)))} ~main____CPAchecker_TMP_0~0 := ~__tmp_31_0~0; {60#(= (_ bv1 32) (bvurem (bvadd main_~main__x~0 (_ bv4294967294 32)) (_ bv3 32)))} is VALID [2018-11-23 11:45:58,951 INFO L273 TraceCheckUtils]: 10: Hoare triple {60#(= (_ bv1 32) (bvurem (bvadd main_~main__x~0 (_ bv4294967294 32)) (_ bv3 32)))} havoc ~main____CPAchecker_TMP_0~1;~main____CPAchecker_TMP_0~1 := #t~nondet1;havoc #t~nondet1; {60#(= (_ bv1 32) (bvurem (bvadd main_~main__x~0 (_ bv4294967294 32)) (_ bv3 32)))} is VALID [2018-11-23 11:45:58,952 INFO L273 TraceCheckUtils]: 11: Hoare triple {60#(= (_ bv1 32) (bvurem (bvadd main_~main__x~0 (_ bv4294967294 32)) (_ bv3 32)))} assume !!(0bv32 == ~main____CPAchecker_TMP_0~1); {60#(= (_ bv1 32) (bvurem (bvadd main_~main__x~0 (_ bv4294967294 32)) (_ bv3 32)))} is VALID [2018-11-23 11:45:58,990 INFO L273 TraceCheckUtils]: 12: Hoare triple {60#(= (_ bv1 32) (bvurem (bvadd main_~main__x~0 (_ bv4294967294 32)) (_ bv3 32)))} assume 0bv32 == ~main__y~0;havoc ~__tmp_1~0;~__tmp_1~0 := (if 0bv32 == ~bvurem32(~main__x~0, 3bv32) then 1bv32 else 0bv32);havoc ~__VERIFIER_assert__cond~0;~__VERIFIER_assert__cond~0 := ~__tmp_1~0; {73#(or (= (bvadd main_~__VERIFIER_assert__cond~0 (_ bv4294967295 32)) (_ bv0 32)) (and (exists ((main_~main__x~0 (_ BitVec 32))) (and (not (= (_ bv0 32) (bvurem main_~main__x~0 (_ bv3 32)))) (= (_ bv1 32) (bvurem (bvadd main_~main__x~0 (_ bv4294967294 32)) (_ bv3 32))))) (= main_~__VERIFIER_assert__cond~0 (_ bv0 32))))} is VALID [2018-11-23 11:45:58,992 INFO L273 TraceCheckUtils]: 13: Hoare triple {73#(or (= (bvadd main_~__VERIFIER_assert__cond~0 (_ bv4294967295 32)) (_ bv0 32)) (and (exists ((main_~main__x~0 (_ BitVec 32))) (and (not (= (_ bv0 32) (bvurem main_~main__x~0 (_ bv3 32)))) (= (_ bv1 32) (bvurem (bvadd main_~main__x~0 (_ bv4294967294 32)) (_ bv3 32))))) (= main_~__VERIFIER_assert__cond~0 (_ bv0 32))))} assume 0bv32 == ~__VERIFIER_assert__cond~0; {77#(exists ((main_~main__x~0 (_ BitVec 32))) (and (not (= (_ bv0 32) (bvurem main_~main__x~0 (_ bv3 32)))) (= (_ bv1 32) (bvurem (bvadd main_~main__x~0 (_ bv4294967294 32)) (_ bv3 32)))))} is VALID [2018-11-23 11:46:01,004 INFO L273 TraceCheckUtils]: 14: Hoare triple {77#(exists ((main_~main__x~0 (_ BitVec 32))) (and (not (= (_ bv0 32) (bvurem main_~main__x~0 (_ bv3 32)))) (= (_ bv1 32) (bvurem (bvadd main_~main__x~0 (_ bv4294967294 32)) (_ bv3 32)))))} assume !false; {32#false} is UNKNOWN [2018-11-23 11:46:01,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 11:46:01,010 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-23 11:46:01,015 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 11:46:01,015 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-23 11:46:01,021 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2018-11-23 11:46:01,026 INFO L84 Accepts]: Finished accepts. word is accepted. [2018-11-23 11:46:01,030 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 5 states. [2018-11-23 11:46:05,257 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 15 edges. 13 inductive. 0 not inductive. 2 times theorem prover too weak to decide inductivity. [2018-11-23 11:46:05,258 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-23 11:46:05,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-23 11:46:05,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=7, Unknown=2, NotChecked=4, Total=20 [2018-11-23 11:46:05,269 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 5 states. [2018-11-23 11:47:27,417 WARN L180 SmtUtils]: Spent 10.42 s on a formula simplification that was a NOOP. DAG size: 21 [2018-11-23 11:48:25,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 11:48:25,821 INFO L93 Difference]: Finished difference Result 63 states and 88 transitions. [2018-11-23 11:48:25,821 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-23 11:48:25,821 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2018-11-23 11:48:25,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 11:48:25,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-11-23 11:48:25,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 88 transitions. [2018-11-23 11:48:25,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-11-23 11:48:25,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 88 transitions. [2018-11-23 11:48:25,845 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 5 states and 88 transitions. [2018-11-23 11:48:33,193 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 88 edges. 86 inductive. 0 not inductive. 2 times theorem prover too weak to decide inductivity. [2018-11-23 11:48:33,206 INFO L225 Difference]: With dead ends: 63 [2018-11-23 11:48:33,206 INFO L226 Difference]: Without dead ends: 30 [2018-11-23 11:48:33,210 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 25.0s TimeCoverageRelationStatistics Valid=11, Invalid=11, Unknown=2, NotChecked=6, Total=30 [2018-11-23 11:48:33,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2018-11-23 11:48:33,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2018-11-23 11:48:33,278 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2018-11-23 11:48:33,279 INFO L82 GeneralOperation]: Start isEquivalent. First operand 30 states. Second operand 29 states. [2018-11-23 11:48:33,279 INFO L74 IsIncluded]: Start isIncluded. First operand 30 states. Second operand 29 states. [2018-11-23 11:48:33,280 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 29 states. [2018-11-23 11:48:33,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 11:48:33,285 INFO L93 Difference]: Finished difference Result 30 states and 37 transitions. [2018-11-23 11:48:33,285 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2018-11-23 11:48:33,286 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-23 11:48:33,286 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2018-11-23 11:48:33,286 INFO L74 IsIncluded]: Start isIncluded. First operand 29 states. Second operand 30 states. [2018-11-23 11:48:33,287 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 30 states. [2018-11-23 11:48:33,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 11:48:33,292 INFO L93 Difference]: Finished difference Result 30 states and 37 transitions. [2018-11-23 11:48:33,292 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2018-11-23 11:48:33,293 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-23 11:48:33,293 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2018-11-23 11:48:33,293 INFO L88 GeneralOperation]: Finished isEquivalent. [2018-11-23 11:48:33,293 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2018-11-23 11:48:33,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-11-23 11:48:33,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2018-11-23 11:48:33,299 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 35 transitions. Word has length 15 [2018-11-23 11:48:33,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 11:48:33,299 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 35 transitions. [2018-11-23 11:48:33,301 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-23 11:48:33,301 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2018-11-23 11:48:33,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-11-23 11:48:33,302 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 11:48:33,302 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 11:48:33,306 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 11:48:33,306 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 11:48:33,306 INFO L82 PathProgramCache]: Analyzing trace with hash -386324053, now seen corresponding path program 1 times [2018-11-23 11:48:33,307 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-23 11:48:33,307 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-23 11:48:33,324 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 11:48:49,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 11:48:51,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2018-11-23 11:48:51,098 INFO L273 TraceCheckSpWp]: Computing forward predicates...