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+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-61f4311 [2018-11-23 11:44:39,834 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-23 11:44:39,836 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-23 11:44:39,848 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-23 11:44:39,849 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-23 11:44:39,850 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-23 11:44:39,851 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-23 11:44:39,853 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-23 11:44:39,855 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-23 11:44:39,856 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-23 11:44:39,857 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-23 11:44:39,857 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-23 11:44:39,858 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-23 11:44:39,859 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-23 11:44:39,860 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-23 11:44:39,861 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-23 11:44:39,862 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-23 11:44:39,864 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-23 11:44:39,866 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-23 11:44:39,868 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-23 11:44:39,869 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-23 11:44:39,870 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-23 11:44:39,873 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-23 11:44:39,874 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-23 11:44:39,874 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-23 11:44:39,875 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-23 11:44:39,876 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-23 11:44:39,877 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-23 11:44:39,878 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-23 11:44:39,879 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-23 11:44:39,879 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-23 11:44:39,880 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-23 11:44:39,880 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-23 11:44:39,880 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-23 11:44:39,884 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-23 11:44:39,885 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-23 11:44:39,885 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 11:44:39,917 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-23 11:44:39,918 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-23 11:44:39,922 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-23 11:44:39,922 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-23 11:44:39,923 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-23 11:44:39,923 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-23 11:44:39,923 INFO L133 SettingsManager]: * Use SBE=true [2018-11-23 11:44:39,924 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-23 11:44:39,924 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-23 11:44:39,924 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-23 11:44:39,924 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-23 11:44:39,924 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-23 11:44:39,925 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-23 11:44:39,926 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-23 11:44:39,926 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-11-23 11:44:39,927 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-11-23 11:44:39,927 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-23 11:44:39,927 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-23 11:44:39,927 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-23 11:44:39,927 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-23 11:44:39,929 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-23 11:44:39,929 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-23 11:44:39,929 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-23 11:44:39,929 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-23 11:44:39,930 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-23 11:44:39,930 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-23 11:44:39,930 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-23 11:44:39,930 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-23 11:44:39,930 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-11-23 11:44:39,931 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-23 11:44:39,931 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-11-23 11:44:39,931 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-11-23 11:44:39,931 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-23 11:44:40,003 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-23 11:44:40,017 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-23 11:44:40,020 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-23 11:44:40,022 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-23 11:44:40,022 INFO L276 PluginConnector]: CDTParser initialized [2018-11-23 11:44:40,023 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-industry-pattern/mod3_true-unreach-call.c.v+lhb-reducer.c [2018-11-23 11:44:40,083 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bde14d478/4e881726cc10454eb2b33bc5aa16c16b/FLAGad566f569 [2018-11-23 11:44:40,549 INFO L307 CDTParser]: Found 1 translation units. [2018-11-23 11:44:40,550 INFO L161 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-industry-pattern/mod3_true-unreach-call.c.v+lhb-reducer.c [2018-11-23 11:44:40,564 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bde14d478/4e881726cc10454eb2b33bc5aa16c16b/FLAGad566f569 [2018-11-23 11:44:40,887 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bde14d478/4e881726cc10454eb2b33bc5aa16c16b [2018-11-23 11:44:40,896 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-23 11:44:40,898 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-23 11:44:40,899 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-23 11:44:40,899 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-23 11:44:40,903 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-23 11:44:40,905 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:44:40" (1/1) ... [2018-11-23 11:44:40,908 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c038d0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:44:40, skipping insertion in model container [2018-11-23 11:44:40,908 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:44:40" (1/1) ... [2018-11-23 11:44:40,919 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-23 11:44:40,949 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-23 11:44:41,196 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 11:44:41,207 INFO L191 MainTranslator]: Completed pre-run [2018-11-23 11:44:41,241 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 11:44:41,258 INFO L195 MainTranslator]: Completed translation [2018-11-23 11:44:41,259 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:44:41 WrapperNode [2018-11-23 11:44:41,259 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-23 11:44:41,260 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-23 11:44:41,260 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-23 11:44:41,261 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-23 11:44:41,269 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:44:41" (1/1) ... [2018-11-23 11:44:41,278 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:44:41" (1/1) ... [2018-11-23 11:44:41,286 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-23 11:44:41,287 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-23 11:44:41,287 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-23 11:44:41,287 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-23 11:44:41,295 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:44:41" (1/1) ... [2018-11-23 11:44:41,296 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:44:41" (1/1) ... [2018-11-23 11:44:41,298 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:44:41" (1/1) ... [2018-11-23 11:44:41,298 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:44:41" (1/1) ... [2018-11-23 11:44:41,308 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:44:41" (1/1) ... [2018-11-23 11:44:41,312 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:44:41" (1/1) ... [2018-11-23 11:44:41,317 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:44:41" (1/1) ... [2018-11-23 11:44:41,319 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-23 11:44:41,320 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-23 11:44:41,320 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-23 11:44:41,320 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-23 11:44:41,321 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:44:41" (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 11:44:41,446 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-23 11:44:41,446 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-23 11:44:41,447 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-23 11:44:41,447 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-23 11:44:41,447 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-23 11:44:41,447 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-23 11:44:42,234 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-23 11:44:42,235 INFO L280 CfgBuilder]: Removed 0 assue(true) statements. [2018-11-23 11:44:42,235 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:44:42 BoogieIcfgContainer [2018-11-23 11:44:42,235 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-23 11:44:42,236 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-23 11:44:42,237 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-23 11:44:42,240 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-23 11:44:42,241 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 11:44:40" (1/3) ... [2018-11-23 11:44:42,242 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11207df3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:44:42, skipping insertion in model container [2018-11-23 11:44:42,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:44:41" (2/3) ... [2018-11-23 11:44:42,242 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11207df3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:44:42, skipping insertion in model container [2018-11-23 11:44:42,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:44:42" (3/3) ... [2018-11-23 11:44:42,244 INFO L112 eAbstractionObserver]: Analyzing ICFG mod3_true-unreach-call.c.v+lhb-reducer.c [2018-11-23 11:44:42,255 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-23 11:44:42,264 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-23 11:44:42,283 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-23 11:44:42,318 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-23 11:44:42,318 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-23 11:44:42,319 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-23 11:44:42,319 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-23 11:44:42,319 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-23 11:44:42,319 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-23 11:44:42,320 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-23 11:44:42,320 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-23 11:44:42,320 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-23 11:44:42,338 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2018-11-23 11:44:42,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-11-23 11:44:42,345 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 11:44:42,346 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 11:44:42,349 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 11:44:42,354 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 11:44:42,355 INFO L82 PathProgramCache]: Analyzing trace with hash 446778609, now seen corresponding path program 1 times [2018-11-23 11:44:42,360 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-23 11:44:42,360 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 11:44:42,379 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 11:44:55,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 11:44:57,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2018-11-23 11:44:57,753 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 11:45:12,415 WARN L180 SmtUtils]: Spent 10.12 s on a formula simplification that was a NOOP. DAG size: 20 [2018-11-23 11:45:18,474 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 11:45:20,485 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 11:45:20,489 INFO L256 TraceCheckUtils]: 0: Hoare triple {31#true} call ULTIMATE.init(); {31#true} is VALID [2018-11-23 11:45:20,492 INFO L273 TraceCheckUtils]: 1: Hoare triple {31#true} ~__return_main~0 := 0bv32;~__tmp_112_0~0 := 0bv32;~__tmp_94_0~0 := 0bv32;~__tmp_93_0~0 := 0bv32;~__tmp_88_0~0 := 0bv32;~__tmp_88_1~0 := 0bv32;~__tmp_91_0~0 := 0bv32;~__tmp_91_1~0 := 0bv32;~__return_121~0 := 0bv32; {31#true} is VALID [2018-11-23 11:45:20,492 INFO L273 TraceCheckUtils]: 2: Hoare triple {31#true} assume true; {31#true} is VALID [2018-11-23 11:45:20,493 INFO L268 TraceCheckUtils]: 3: Hoare quadruple {31#true} {31#true} #70#return; {31#true} is VALID [2018-11-23 11:45:20,493 INFO L256 TraceCheckUtils]: 4: Hoare triple {31#true} call #t~ret4 := main(); {31#true} is VALID [2018-11-23 11:45:20,493 INFO L273 TraceCheckUtils]: 5: Hoare triple {31#true} havoc ~main__x~0;~main__y~0 := 1bv32; {31#true} is VALID [2018-11-23 11:45:20,493 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 11:45:20,494 INFO L273 TraceCheckUtils]: 7: Hoare triple {31#true} assume !(0bv32 == ~main____CPAchecker_TMP_0~0); {31#true} is VALID [2018-11-23 11:45:22,506 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_112_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 11:45:22,507 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_112_0~0;~__tmp_94_0~0 := ~main____CPAchecker_TMP_0~0; {60#(= (_ bv1 32) (bvurem (bvadd main_~main__x~0 (_ bv4294967294 32)) (_ bv3 32)))} is VALID [2018-11-23 11:45:22,508 INFO L273 TraceCheckUtils]: 10: Hoare triple {60#(= (_ bv1 32) (bvurem (bvadd main_~main__x~0 (_ bv4294967294 32)) (_ bv3 32)))} ~main____CPAchecker_TMP_0~0 := ~__tmp_94_0~0;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 11:45:22,509 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 11:45:22,542 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 11:45:22,544 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 11:45:24,555 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 11:45:24,560 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 11:45:24,560 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-23 11:45:24,570 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 11:45:24,571 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-23 11:45:24,577 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2018-11-23 11:45:24,580 INFO L84 Accepts]: Finished accepts. word is accepted. [2018-11-23 11:45:24,584 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 5 states. [2018-11-23 11:45:28,795 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 11:45:28,795 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-23 11:45:28,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-23 11:45:28,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=7, Unknown=2, NotChecked=4, Total=20 [2018-11-23 11:45:28,808 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 5 states. [2018-11-23 11:46:51,688 WARN L180 SmtUtils]: Spent 12.49 s on a formula simplification that was a NOOP. DAG size: 21 [2018-11-23 11:47:52,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 11:47:52,755 INFO L93 Difference]: Finished difference Result 63 states and 88 transitions. [2018-11-23 11:47:52,755 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-23 11:47:52,756 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2018-11-23 11:47:52,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 11:47:52,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-11-23 11:47:52,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 88 transitions. [2018-11-23 11:47:52,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-11-23 11:47:52,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 88 transitions. [2018-11-23 11:47:52,780 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 5 states and 88 transitions. [2018-11-23 11:47:59,136 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 11:47:59,150 INFO L225 Difference]: With dead ends: 63 [2018-11-23 11:47:59,150 INFO L226 Difference]: Without dead ends: 30 [2018-11-23 11:47:59,154 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 27.0s TimeCoverageRelationStatistics Valid=11, Invalid=11, Unknown=2, NotChecked=6, Total=30 [2018-11-23 11:47:59,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2018-11-23 11:47:59,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2018-11-23 11:47:59,220 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2018-11-23 11:47:59,221 INFO L82 GeneralOperation]: Start isEquivalent. First operand 30 states. Second operand 29 states. [2018-11-23 11:47:59,221 INFO L74 IsIncluded]: Start isIncluded. First operand 30 states. Second operand 29 states. [2018-11-23 11:47:59,221 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 29 states. [2018-11-23 11:47:59,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 11:47:59,227 INFO L93 Difference]: Finished difference Result 30 states and 37 transitions. [2018-11-23 11:47:59,227 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2018-11-23 11:47:59,228 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-23 11:47:59,228 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2018-11-23 11:47:59,228 INFO L74 IsIncluded]: Start isIncluded. First operand 29 states. Second operand 30 states. [2018-11-23 11:47:59,229 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 30 states. [2018-11-23 11:47:59,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 11:47:59,233 INFO L93 Difference]: Finished difference Result 30 states and 37 transitions. [2018-11-23 11:47:59,234 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2018-11-23 11:47:59,234 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-23 11:47:59,234 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2018-11-23 11:47:59,235 INFO L88 GeneralOperation]: Finished isEquivalent. [2018-11-23 11:47:59,235 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2018-11-23 11:47:59,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-11-23 11:47:59,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2018-11-23 11:47:59,240 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 35 transitions. Word has length 15 [2018-11-23 11:47:59,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 11:47:59,241 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 35 transitions. [2018-11-23 11:47:59,244 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-23 11:47:59,244 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2018-11-23 11:47:59,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-11-23 11:47:59,245 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 11:47:59,245 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 11:47:59,246 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 11:47:59,246 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 11:47:59,246 INFO L82 PathProgramCache]: Analyzing trace with hash 1003929308, now seen corresponding path program 1 times [2018-11-23 11:47:59,247 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-23 11:47:59,249 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 11:47:59,272 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 11:48:11,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 11:48:13,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2018-11-23 11:48:13,988 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 11:48:28,557 WARN L180 SmtUtils]: Spent 10.12 s on a formula simplification that was a NOOP. DAG size: 19