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/loops/trex02_false-unreach-call_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-370d6ab [2018-11-14 16:37:16,310 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-14 16:37:16,312 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-14 16:37:16,324 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-14 16:37:16,324 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-14 16:37:16,325 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-14 16:37:16,327 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-14 16:37:16,330 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-14 16:37:16,332 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-14 16:37:16,333 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-14 16:37:16,334 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-14 16:37:16,334 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-14 16:37:16,335 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-14 16:37:16,336 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-14 16:37:16,338 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-14 16:37:16,339 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-14 16:37:16,340 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-14 16:37:16,342 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-14 16:37:16,344 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-14 16:37:16,345 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-14 16:37:16,346 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-14 16:37:16,348 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-14 16:37:16,351 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-14 16:37:16,351 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-14 16:37:16,351 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-14 16:37:16,352 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-14 16:37:16,353 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-14 16:37:16,354 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-14 16:37:16,355 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-14 16:37:16,356 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-14 16:37:16,357 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-14 16:37:16,357 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-14 16:37:16,358 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-14 16:37:16,358 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-14 16:37:16,359 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-14 16:37:16,360 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-14 16:37:16,360 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 16:37:16,375 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-14 16:37:16,376 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-14 16:37:16,376 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-14 16:37:16,377 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-14 16:37:16,377 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-14 16:37:16,377 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-14 16:37:16,378 INFO L133 SettingsManager]: * Use SBE=true [2018-11-14 16:37:16,378 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-14 16:37:16,378 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-14 16:37:16,378 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-14 16:37:16,379 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-14 16:37:16,379 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-14 16:37:16,379 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-14 16:37:16,379 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-14 16:37:16,379 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-11-14 16:37:16,380 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-11-14 16:37:16,380 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-14 16:37:16,380 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-14 16:37:16,380 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-14 16:37:16,380 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-14 16:37:16,381 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-14 16:37:16,381 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-14 16:37:16,381 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-14 16:37:16,381 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-14 16:37:16,381 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-14 16:37:16,381 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-14 16:37:16,382 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-14 16:37:16,382 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-11-14 16:37:16,382 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-14 16:37:16,382 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-11-14 16:37:16,382 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-11-14 16:37:16,383 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-14 16:37:16,429 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-14 16:37:16,442 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-14 16:37:16,446 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-14 16:37:16,447 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-14 16:37:16,448 INFO L276 PluginConnector]: CDTParser initialized [2018-11-14 16:37:16,449 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/trex02_false-unreach-call_true-termination.i [2018-11-14 16:37:16,506 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ab8d9ba7/e025ca09e5574df2b9626bc95bbc9358/FLAG2513574a7 [2018-11-14 16:37:16,945 INFO L298 CDTParser]: Found 1 translation units. [2018-11-14 16:37:16,947 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/trex02_false-unreach-call_true-termination.i [2018-11-14 16:37:16,955 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ab8d9ba7/e025ca09e5574df2b9626bc95bbc9358/FLAG2513574a7 [2018-11-14 16:37:16,976 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ab8d9ba7/e025ca09e5574df2b9626bc95bbc9358 [2018-11-14 16:37:16,989 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-14 16:37:16,992 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-11-14 16:37:16,995 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-14 16:37:16,995 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-14 16:37:17,002 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-14 16:37:17,004 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 04:37:16" (1/1) ... [2018-11-14 16:37:17,008 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3fd0ac73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:37:17, skipping insertion in model container [2018-11-14 16:37:17,008 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 04:37:16" (1/1) ... [2018-11-14 16:37:17,019 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-14 16:37:17,047 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-14 16:37:17,275 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-14 16:37:17,282 INFO L191 MainTranslator]: Completed pre-run [2018-11-14 16:37:17,300 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-14 16:37:17,318 INFO L195 MainTranslator]: Completed translation [2018-11-14 16:37:17,319 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:37:17 WrapperNode [2018-11-14 16:37:17,319 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-14 16:37:17,320 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-14 16:37:17,320 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-14 16:37:17,320 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-14 16:37:17,335 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:37:17" (1/1) ... [2018-11-14 16:37:17,335 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:37:17" (1/1) ... [2018-11-14 16:37:17,342 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:37:17" (1/1) ... [2018-11-14 16:37:17,342 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:37:17" (1/1) ... [2018-11-14 16:37:17,349 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:37:17" (1/1) ... [2018-11-14 16:37:17,355 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:37:17" (1/1) ... [2018-11-14 16:37:17,357 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:37:17" (1/1) ... [2018-11-14 16:37:17,359 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-14 16:37:17,360 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-14 16:37:17,360 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-14 16:37:17,360 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-14 16:37:17,361 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:37:17" (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 16:37:17,484 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-14 16:37:17,484 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-14 16:37:17,485 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-14 16:37:17,485 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2018-11-14 16:37:17,485 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-14 16:37:17,485 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-14 16:37:17,485 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-14 16:37:17,485 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2018-11-14 16:37:17,486 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-11-14 16:37:17,486 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2018-11-14 16:37:17,486 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-14 16:37:17,486 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-14 16:37:17,486 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-14 16:37:17,953 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-14 16:37:17,953 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 04:37:17 BoogieIcfgContainer [2018-11-14 16:37:17,954 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-14 16:37:17,955 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-14 16:37:17,955 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-14 16:37:17,958 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-14 16:37:17,959 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 04:37:16" (1/3) ... [2018-11-14 16:37:17,960 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@472f1ea7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 04:37:17, skipping insertion in model container [2018-11-14 16:37:17,960 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:37:17" (2/3) ... [2018-11-14 16:37:17,960 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@472f1ea7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 04:37:17, skipping insertion in model container [2018-11-14 16:37:17,961 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 04:37:17" (3/3) ... [2018-11-14 16:37:17,963 INFO L112 eAbstractionObserver]: Analyzing ICFG trex02_false-unreach-call_true-termination.i [2018-11-14 16:37:17,974 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-14 16:37:17,983 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-14 16:37:18,003 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-14 16:37:18,047 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-14 16:37:18,048 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-14 16:37:18,049 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-14 16:37:18,049 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-14 16:37:18,049 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-14 16:37:18,049 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-14 16:37:18,050 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-14 16:37:18,051 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-14 16:37:18,051 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-14 16:37:18,077 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2018-11-14 16:37:18,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-14 16:37:18,088 INFO L367 BasicCegarLoop]: Found error trace [2018-11-14 16:37:18,090 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-14 16:37:18,096 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-14 16:37:18,103 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-14 16:37:18,104 INFO L82 PathProgramCache]: Analyzing trace with hash -1587168562, now seen corresponding path program 1 times [2018-11-14 16:37:18,109 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-14 16:37:18,110 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 16:37:18,145 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-14 16:37:18,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-14 16:37:18,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-14 16:37:18,235 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-14 16:37:18,357 INFO L256 TraceCheckUtils]: 0: Hoare triple {28#true} call ULTIMATE.init(); {28#true} is VALID [2018-11-14 16:37:18,362 INFO L273 TraceCheckUtils]: 1: Hoare triple {28#true} ~x~0 := 0bv32; {28#true} is VALID [2018-11-14 16:37:18,362 INFO L273 TraceCheckUtils]: 2: Hoare triple {28#true} assume true; {28#true} is VALID [2018-11-14 16:37:18,363 INFO L268 TraceCheckUtils]: 3: Hoare quadruple {28#true} {28#true} #43#return; {28#true} is VALID [2018-11-14 16:37:18,363 INFO L256 TraceCheckUtils]: 4: Hoare triple {28#true} call #t~ret3 := main(); {28#true} is VALID [2018-11-14 16:37:18,364 INFO L273 TraceCheckUtils]: 5: Hoare triple {28#true} ~x~0 := #t~nondet1;havoc #t~nondet1; {28#true} is VALID [2018-11-14 16:37:18,377 INFO L273 TraceCheckUtils]: 6: Hoare triple {28#true} assume !true; {29#false} is VALID [2018-11-14 16:37:18,378 INFO L256 TraceCheckUtils]: 7: Hoare triple {29#false} call __VERIFIER_assert((if ~x~0 == 0bv32 then 1bv32 else 0bv32)); {29#false} is VALID [2018-11-14 16:37:18,378 INFO L273 TraceCheckUtils]: 8: Hoare triple {29#false} ~cond := #in~cond; {29#false} is VALID [2018-11-14 16:37:18,378 INFO L273 TraceCheckUtils]: 9: Hoare triple {29#false} assume ~cond == 0bv32; {29#false} is VALID [2018-11-14 16:37:18,379 INFO L273 TraceCheckUtils]: 10: Hoare triple {29#false} assume !false; {29#false} is VALID [2018-11-14 16:37:18,381 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 16:37:18,382 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-14 16:37:18,385 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-14 16:37:18,385 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-14 16:37:18,391 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2018-11-14 16:37:18,394 INFO L84 Accepts]: Finished accepts. word is accepted. [2018-11-14 16:37:18,398 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states. [2018-11-14 16:37:18,441 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 11 edges. 11 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2018-11-14 16:37:18,441 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-14 16:37:18,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-14 16:37:18,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-14 16:37:18,454 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 2 states. [2018-11-14 16:37:18,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-14 16:37:18,638 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2018-11-14 16:37:18,638 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-14 16:37:18,641 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2018-11-14 16:37:18,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-14 16:37:18,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2018-11-14 16:37:18,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 41 transitions. [2018-11-14 16:37:18,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2018-11-14 16:37:18,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 41 transitions. [2018-11-14 16:37:18,659 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states and 41 transitions. [2018-11-14 16:37:18,981 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 41 edges. 41 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2018-11-14 16:37:18,994 INFO L225 Difference]: With dead ends: 36 [2018-11-14 16:37:18,994 INFO L226 Difference]: Without dead ends: 19 [2018-11-14 16:37:18,998 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-14 16:37:19,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-11-14 16:37:19,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-11-14 16:37:19,049 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2018-11-14 16:37:19,050 INFO L82 GeneralOperation]: Start isEquivalent. First operand 19 states. Second operand 19 states. [2018-11-14 16:37:19,051 INFO L74 IsIncluded]: Start isIncluded. First operand 19 states. Second operand 19 states. [2018-11-14 16:37:19,051 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 19 states. [2018-11-14 16:37:19,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-14 16:37:19,057 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2018-11-14 16:37:19,057 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2018-11-14 16:37:19,057 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-14 16:37:19,058 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2018-11-14 16:37:19,058 INFO L74 IsIncluded]: Start isIncluded. First operand 19 states. Second operand 19 states. [2018-11-14 16:37:19,058 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 19 states. [2018-11-14 16:37:19,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-14 16:37:19,062 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2018-11-14 16:37:19,062 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2018-11-14 16:37:19,063 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-14 16:37:19,063 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2018-11-14 16:37:19,063 INFO L88 GeneralOperation]: Finished isEquivalent. [2018-11-14 16:37:19,063 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2018-11-14 16:37:19,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-11-14 16:37:19,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2018-11-14 16:37:19,068 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 11 [2018-11-14 16:37:19,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-14 16:37:19,069 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2018-11-14 16:37:19,069 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-14 16:37:19,069 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2018-11-14 16:37:19,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-11-14 16:37:19,070 INFO L367 BasicCegarLoop]: Found error trace [2018-11-14 16:37:19,070 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-14 16:37:19,071 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-14 16:37:19,071 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-14 16:37:19,071 INFO L82 PathProgramCache]: Analyzing trace with hash 1847555599, now seen corresponding path program 1 times [2018-11-14 16:37:19,071 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-14 16:37:19,071 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 16:37:19,089 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-14 16:37:19,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-14 16:37:19,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-14 16:37:19,150 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-14 16:37:19,183 WARN L170 areAnnotationChecker]: ULTIMATE.initENTRY has no Hoare annotation [2018-11-14 16:37:19,183 WARN L170 areAnnotationChecker]: fooENTRY has no Hoare annotation [2018-11-14 16:37:19,184 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2018-11-14 16:37:19,184 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2018-11-14 16:37:19,184 WARN L170 areAnnotationChecker]: mainENTRY has no Hoare annotation [2018-11-14 16:37:19,184 WARN L170 areAnnotationChecker]: __VERIFIER_assertENTRY has no Hoare annotation [2018-11-14 16:37:19,184 WARN L170 areAnnotationChecker]: ULTIMATE.initFINAL has no Hoare annotation [2018-11-14 16:37:19,184 WARN L170 areAnnotationChecker]: fooFINAL has no Hoare annotation [2018-11-14 16:37:19,185 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2018-11-14 16:37:19,185 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2018-11-14 16:37:19,185 WARN L170 areAnnotationChecker]: L19-1 has no Hoare annotation [2018-11-14 16:37:19,185 WARN L170 areAnnotationChecker]: L19-1 has no Hoare annotation [2018-11-14 16:37:19,185 WARN L170 areAnnotationChecker]: L3 has no Hoare annotation [2018-11-14 16:37:19,185 WARN L170 areAnnotationChecker]: L3 has no Hoare annotation [2018-11-14 16:37:19,186 WARN L170 areAnnotationChecker]: ULTIMATE.initEXIT has no Hoare annotation [2018-11-14 16:37:19,186 WARN L170 areAnnotationChecker]: fooEXIT has no Hoare annotation [2018-11-14 16:37:19,186 WARN L170 areAnnotationChecker]: fooEXIT has no Hoare annotation [2018-11-14 16:37:19,186 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2018-11-14 16:37:19,186 WARN L170 areAnnotationChecker]: L16-1 has no Hoare annotation [2018-11-14 16:37:19,186 WARN L170 areAnnotationChecker]: L16-1 has no Hoare annotation [2018-11-14 16:37:19,187 WARN L170 areAnnotationChecker]: L16-3 has no Hoare annotation [2018-11-14 16:37:19,187 WARN L170 areAnnotationChecker]: L16-3 has no Hoare annotation [2018-11-14 16:37:19,187 WARN L170 areAnnotationChecker]: L4 has no Hoare annotation [2018-11-14 16:37:19,187 WARN L170 areAnnotationChecker]: L4 has no Hoare annotation [2018-11-14 16:37:19,187 WARN L170 areAnnotationChecker]: L3-2 has no Hoare annotation [2018-11-14 16:37:19,187 WARN L170 areAnnotationChecker]: L18 has no Hoare annotation [2018-11-14 16:37:19,188 WARN L170 areAnnotationChecker]: L18 has no Hoare annotation [2018-11-14 16:37:19,188 WARN L170 areAnnotationChecker]: mainFINAL has no Hoare annotation [2018-11-14 16:37:19,188 WARN L170 areAnnotationChecker]: __VERIFIER_assertEXIT has no Hoare annotation [2018-11-14 16:37:19,188 WARN L170 areAnnotationChecker]: L18-1 has no Hoare annotation [2018-11-14 16:37:19,188 WARN L170 areAnnotationChecker]: L18-1 has no Hoare annotation [2018-11-14 16:37:19,188 WARN L170 areAnnotationChecker]: L19 has no Hoare annotation [2018-11-14 16:37:19,189 WARN L170 areAnnotationChecker]: L19 has no Hoare annotation [2018-11-14 16:37:19,189 WARN L170 areAnnotationChecker]: mainEXIT has no Hoare annotation [2018-11-14 16:37:19,189 INFO L163 areAnnotationChecker]: CFG has 0 edges. 0 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2018-11-14 16:37:19,192 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.11 04:37:19 BoogieIcfgContainer [2018-11-14 16:37:19,192 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-14 16:37:19,193 INFO L168 Benchmark]: Toolchain (without parser) took 2203.25 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 714.1 MB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -690.4 MB). Peak memory consumption was 23.7 MB. Max. memory is 7.1 GB. [2018-11-14 16:37:19,195 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-14 16:37:19,196 INFO L168 Benchmark]: CACSL2BoogieTranslator took 324.48 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-11-14 16:37:19,197 INFO L168 Benchmark]: Boogie Preprocessor took 39.57 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-14 16:37:19,197 INFO L168 Benchmark]: RCFGBuilder took 593.96 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 714.1 MB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -759.5 MB). Peak memory consumption was 26.2 MB. Max. memory is 7.1 GB. [2018-11-14 16:37:19,198 INFO L168 Benchmark]: TraceAbstraction took 1237.19 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 58.5 MB). Peak memory consumption was 58.5 MB. Max. memory is 7.1 GB. [2018-11-14 16:37:19,203 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - GenericResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 324.48 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 39.57 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 593.96 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 714.1 MB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -759.5 MB). Peak memory consumption was 26.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1237.19 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 58.5 MB). Peak memory consumption was 58.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 4]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L10] int x; VAL [\old(x)=0, x=0] [L15] x=__VERIFIER_nondet_int() [L16] COND FALSE !(x > 0) VAL [\old(x)=0, x=2147483648] [L21] CALL __VERIFIER_assert(x==0) VAL [\old(cond)=0, \old(x)=0, x=2147483648] [L3] COND TRUE !(cond) VAL [\old(cond)=0, \old(x)=0, cond=0, x=2147483648] [L4] __VERIFIER_error() VAL [\old(cond)=0, \old(x)=0, cond=0, x=2147483648] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 25 locations, 1 error locations. UNSAFE Result, 1.1s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 27 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 23 NumberOfCodeBlocks, 23 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 100 SizeOfPredicates, 0 NumberOfNonLiveVariables, 19 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...