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_Default.epf -i ../../../trunk/examples/svcomp/loops/while_infinite_loop_4_false-unreach-call_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-18e5b2d-m [2018-11-18 23:57:34,298 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 23:57:34,301 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 23:57:34,314 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 23:57:34,315 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 23:57:34,316 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 23:57:34,317 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 23:57:34,319 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 23:57:34,321 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 23:57:34,322 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 23:57:34,323 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 23:57:34,323 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 23:57:34,324 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 23:57:34,325 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 23:57:34,326 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 23:57:34,327 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 23:57:34,328 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 23:57:34,330 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 23:57:34,332 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 23:57:34,334 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 23:57:34,335 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 23:57:34,336 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 23:57:34,339 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-11-18 23:57:34,348 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-18 23:57:34,364 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 23:57:34,364 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 23:57:34,365 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 23:57:34,365 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-18 23:57:34,366 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-18 23:57:34,366 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-18 23:57:34,367 INFO L133 SettingsManager]: * Use SBE=true [2018-11-18 23:57:34,367 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 23:57:34,367 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 23:57:34,367 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 23:57:34,367 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 23:57:34,368 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 23:57:34,368 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 23:57:34,368 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 23:57:34,368 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 23:57:34,368 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 23:57:34,368 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 23:57:34,369 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 23:57:34,369 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 23:57:34,369 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 23:57:34,369 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 23:57:34,369 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 23:57:34,370 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 23:57:34,370 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 23:57:34,370 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 23:57:34,370 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 23:57:34,370 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 23:57:34,371 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-18 23:57:34,371 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 23:57:34,371 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 23:57:34,371 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-18 23:57:34,414 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 23:57:34,428 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 23:57:34,432 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 23:57:34,433 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 23:57:34,434 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 23:57:34,435 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/while_infinite_loop_4_false-unreach-call_true-termination.i [2018-11-18 23:57:34,505 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de404aca8/369436bfa1de4f38b2d68ea030c95385/FLAGe1eea7675 [2018-11-18 23:57:35,021 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 23:57:35,022 INFO L161 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/while_infinite_loop_4_false-unreach-call_true-termination.i [2018-11-18 23:57:35,029 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de404aca8/369436bfa1de4f38b2d68ea030c95385/FLAGe1eea7675 [2018-11-18 23:57:35,385 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de404aca8/369436bfa1de4f38b2d68ea030c95385 [2018-11-18 23:57:35,395 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 23:57:35,397 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-11-18 23:57:35,398 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 23:57:35,398 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 23:57:35,402 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 23:57:35,403 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 11:57:35" (1/1) ... [2018-11-18 23:57:35,406 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a4ca97a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:57:35, skipping insertion in model container [2018-11-18 23:57:35,407 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 11:57:35" (1/1) ... [2018-11-18 23:57:35,417 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 23:57:35,436 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 23:57:35,683 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 23:57:35,691 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 23:57:35,713 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 23:57:35,738 INFO L195 MainTranslator]: Completed translation [2018-11-18 23:57:35,739 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:57:35 WrapperNode [2018-11-18 23:57:35,739 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 23:57:35,740 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 23:57:35,740 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 23:57:35,740 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 23:57:35,756 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:57:35" (1/1) ... [2018-11-18 23:57:35,757 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:57:35" (1/1) ... [2018-11-18 23:57:35,763 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:57:35" (1/1) ... [2018-11-18 23:57:35,763 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:57:35" (1/1) ... [2018-11-18 23:57:35,771 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:57:35" (1/1) ... [2018-11-18 23:57:35,779 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:57:35" (1/1) ... [2018-11-18 23:57:35,780 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:57:35" (1/1) ... [2018-11-18 23:57:35,782 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 23:57:35,782 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 23:57:35,782 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 23:57:35,782 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 23:57:35,784 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:57:35" (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 [2018-11-18 23:57:35,921 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 23:57:35,921 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 23:57:35,921 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-18 23:57:35,922 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2018-11-18 23:57:35,922 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 23:57:35,922 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-18 23:57:35,922 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-18 23:57:35,922 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2018-11-18 23:57:35,922 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 23:57:35,923 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 23:57:35,923 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 23:57:36,363 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 23:57:36,364 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 11:57:36 BoogieIcfgContainer [2018-11-18 23:57:36,364 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 23:57:36,365 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 23:57:36,365 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 23:57:36,368 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 23:57:36,369 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 11:57:35" (1/3) ... [2018-11-18 23:57:36,370 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@642273a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 11:57:36, skipping insertion in model container [2018-11-18 23:57:36,370 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:57:35" (2/3) ... [2018-11-18 23:57:36,370 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@642273a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 11:57:36, skipping insertion in model container [2018-11-18 23:57:36,370 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 11:57:36" (3/3) ... [2018-11-18 23:57:36,372 INFO L112 eAbstractionObserver]: Analyzing ICFG while_infinite_loop_4_false-unreach-call_true-termination.i [2018-11-18 23:57:36,383 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 23:57:36,392 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 23:57:36,410 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 23:57:36,444 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 23:57:36,445 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 23:57:36,445 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 23:57:36,445 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 23:57:36,445 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 23:57:36,446 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 23:57:36,446 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 23:57:36,446 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 23:57:36,446 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 23:57:36,465 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2018-11-18 23:57:36,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-18 23:57:36,473 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 23:57:36,474 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 23:57:36,476 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 23:57:36,482 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 23:57:36,483 INFO L82 PathProgramCache]: Analyzing trace with hash -337279170, now seen corresponding path program 1 times [2018-11-18 23:57:36,485 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 23:57:36,486 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 23:57:36,534 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 23:57:36,535 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 23:57:36,535 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 23:57:36,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 23:57:36,663 INFO L256 TraceCheckUtils]: 0: Hoare triple {28#true} call ULTIMATE.init(); {28#true} is VALID [2018-11-18 23:57:36,666 INFO L273 TraceCheckUtils]: 1: Hoare triple {28#true} ~x~0 := 0; {28#true} is VALID [2018-11-18 23:57:36,667 INFO L273 TraceCheckUtils]: 2: Hoare triple {28#true} assume true; {28#true} is VALID [2018-11-18 23:57:36,668 INFO L268 TraceCheckUtils]: 3: Hoare quadruple {28#true} {28#true} #47#return; {28#true} is VALID [2018-11-18 23:57:36,668 INFO L256 TraceCheckUtils]: 4: Hoare triple {28#true} call #t~ret0 := main(); {28#true} is VALID [2018-11-18 23:57:36,672 INFO L273 TraceCheckUtils]: 5: Hoare triple {28#true} assume !true; {29#false} is VALID [2018-11-18 23:57:36,672 INFO L256 TraceCheckUtils]: 6: Hoare triple {29#false} call __VERIFIER_assert((if 0 == ~x~0 then 1 else 0)); {29#false} is VALID [2018-11-18 23:57:36,673 INFO L273 TraceCheckUtils]: 7: Hoare triple {29#false} ~cond := #in~cond; {29#false} is VALID [2018-11-18 23:57:36,673 INFO L273 TraceCheckUtils]: 8: Hoare triple {29#false} assume 0 == ~cond; {29#false} is VALID [2018-11-18 23:57:36,674 INFO L273 TraceCheckUtils]: 9: Hoare triple {29#false} assume !false; {29#false} is VALID [2018-11-18 23:57:36,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 23:57:36,679 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 23:57:36,680 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 23:57:36,686 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2018-11-18 23:57:36,689 INFO L84 Accepts]: Finished accepts. word is accepted. [2018-11-18 23:57:36,692 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states. [2018-11-18 23:57:36,739 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 10 edges. 10 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2018-11-18 23:57:36,739 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-18 23:57:36,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-18 23:57:36,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 23:57:36,752 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 2 states. [2018-11-18 23:57:36,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 23:57:36,884 INFO L93 Difference]: Finished difference Result 39 states and 51 transitions. [2018-11-18 23:57:36,885 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-18 23:57:36,885 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2018-11-18 23:57:36,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 23:57:36,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2018-11-18 23:57:36,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 51 transitions. [2018-11-18 23:57:36,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2018-11-18 23:57:36,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 51 transitions. [2018-11-18 23:57:36,904 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states and 51 transitions. [2018-11-18 23:57:37,247 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 51 edges. 51 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2018-11-18 23:57:37,259 INFO L225 Difference]: With dead ends: 39 [2018-11-18 23:57:37,259 INFO L226 Difference]: Without dead ends: 19 [2018-11-18 23:57:37,263 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 23:57:37,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-11-18 23:57:37,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-11-18 23:57:37,310 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2018-11-18 23:57:37,311 INFO L82 GeneralOperation]: Start isEquivalent. First operand 19 states. Second operand 19 states. [2018-11-18 23:57:37,312 INFO L74 IsIncluded]: Start isIncluded. First operand 19 states. Second operand 19 states. [2018-11-18 23:57:37,312 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 19 states. [2018-11-18 23:57:37,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 23:57:37,316 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2018-11-18 23:57:37,316 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2018-11-18 23:57:37,317 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-18 23:57:37,317 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2018-11-18 23:57:37,317 INFO L74 IsIncluded]: Start isIncluded. First operand 19 states. Second operand 19 states. [2018-11-18 23:57:37,317 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 19 states. [2018-11-18 23:57:37,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 23:57:37,321 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2018-11-18 23:57:37,321 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2018-11-18 23:57:37,322 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-18 23:57:37,322 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2018-11-18 23:57:37,322 INFO L88 GeneralOperation]: Finished isEquivalent. [2018-11-18 23:57:37,322 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2018-11-18 23:57:37,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-11-18 23:57:37,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2018-11-18 23:57:37,327 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 10 [2018-11-18 23:57:37,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 23:57:37,327 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2018-11-18 23:57:37,327 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-18 23:57:37,327 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2018-11-18 23:57:37,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-11-18 23:57:37,328 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 23:57:37,329 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 23:57:37,329 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 23:57:37,329 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 23:57:37,329 INFO L82 PathProgramCache]: Analyzing trace with hash 672764537, now seen corresponding path program 1 times [2018-11-18 23:57:37,330 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 23:57:37,330 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 23:57:37,331 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 23:57:37,331 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 23:57:37,331 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 23:57:37,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 23:57:37,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 23:57:37,377 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-18 23:57:37,401 WARN L170 areAnnotationChecker]: ULTIMATE.initENTRY has no Hoare annotation [2018-11-18 23:57:37,401 WARN L170 areAnnotationChecker]: evalENTRY has no Hoare annotation [2018-11-18 23:57:37,401 WARN L170 areAnnotationChecker]: evalENTRY has no Hoare annotation [2018-11-18 23:57:37,402 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2018-11-18 23:57:37,402 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2018-11-18 23:57:37,402 WARN L170 areAnnotationChecker]: L27 has no Hoare annotation [2018-11-18 23:57:37,402 WARN L170 areAnnotationChecker]: L27 has no Hoare annotation [2018-11-18 23:57:37,402 WARN L170 areAnnotationChecker]: __VERIFIER_assertENTRY has no Hoare annotation [2018-11-18 23:57:37,402 WARN L170 areAnnotationChecker]: ULTIMATE.initFINAL has no Hoare annotation [2018-11-18 23:57:37,402 WARN L170 areAnnotationChecker]: L14 has no Hoare annotation [2018-11-18 23:57:37,403 WARN L170 areAnnotationChecker]: L14 has no Hoare annotation [2018-11-18 23:57:37,403 WARN L170 areAnnotationChecker]: L14-2 has no Hoare annotation [2018-11-18 23:57:37,403 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2018-11-18 23:57:37,403 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2018-11-18 23:57:37,403 WARN L170 areAnnotationChecker]: L24 has no Hoare annotation [2018-11-18 23:57:37,403 WARN L170 areAnnotationChecker]: L24 has no Hoare annotation [2018-11-18 23:57:37,403 WARN L170 areAnnotationChecker]: L24-2 has no Hoare annotation [2018-11-18 23:57:37,403 WARN L170 areAnnotationChecker]: L24-2 has no Hoare annotation [2018-11-18 23:57:37,404 WARN L170 areAnnotationChecker]: L4 has no Hoare annotation [2018-11-18 23:57:37,404 WARN L170 areAnnotationChecker]: L4 has no Hoare annotation [2018-11-18 23:57:37,404 WARN L170 areAnnotationChecker]: ULTIMATE.initEXIT has no Hoare annotation [2018-11-18 23:57:37,404 WARN L170 areAnnotationChecker]: evalEXIT has no Hoare annotation [2018-11-18 23:57:37,404 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2018-11-18 23:57:37,404 WARN L170 areAnnotationChecker]: L26 has no Hoare annotation [2018-11-18 23:57:37,404 WARN L170 areAnnotationChecker]: L26 has no Hoare annotation [2018-11-18 23:57:37,405 WARN L170 areAnnotationChecker]: L30 has no Hoare annotation [2018-11-18 23:57:37,405 WARN L170 areAnnotationChecker]: L5 has no Hoare annotation [2018-11-18 23:57:37,405 WARN L170 areAnnotationChecker]: L5 has no Hoare annotation [2018-11-18 23:57:37,405 WARN L170 areAnnotationChecker]: L4-2 has no Hoare annotation [2018-11-18 23:57:37,405 WARN L170 areAnnotationChecker]: L26-1 has no Hoare annotation [2018-11-18 23:57:37,405 WARN L170 areAnnotationChecker]: L26-1 has no Hoare annotation [2018-11-18 23:57:37,405 WARN L170 areAnnotationChecker]: mainFINAL has no Hoare annotation [2018-11-18 23:57:37,406 WARN L170 areAnnotationChecker]: __VERIFIER_assertEXIT has no Hoare annotation [2018-11-18 23:57:37,406 WARN L170 areAnnotationChecker]: __VERIFIER_assertEXIT has no Hoare annotation [2018-11-18 23:57:37,406 WARN L170 areAnnotationChecker]: mainEXIT has no Hoare annotation [2018-11-18 23:57:37,406 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. [2018-11-18 23:57:37,409 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 11:57:37 BoogieIcfgContainer [2018-11-18 23:57:37,409 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 23:57:37,410 INFO L168 Benchmark]: Toolchain (without parser) took 2014.63 ms. Allocated memory was 1.5 GB in the beginning and 2.1 GB in the end (delta: 653.8 MB). Free memory was 1.4 GB in the beginning and 2.0 GB in the end (delta: -648.9 MB). Peak memory consumption was 4.9 MB. Max. memory is 7.1 GB. [2018-11-18 23:57:37,413 INFO L168 Benchmark]: CDTParser took 0.23 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. [2018-11-18 23:57:37,414 INFO L168 Benchmark]: CACSL2BoogieTranslator took 341.94 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. [2018-11-18 23:57:37,415 INFO L168 Benchmark]: Boogie Preprocessor took 41.73 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. [2018-11-18 23:57:37,416 INFO L168 Benchmark]: RCFGBuilder took 581.89 ms. Allocated memory was 1.5 GB in the beginning and 2.1 GB in the end (delta: 653.8 MB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -704.9 MB). Peak memory consumption was 26.3 MB. Max. memory is 7.1 GB. [2018-11-18 23:57:37,417 INFO L168 Benchmark]: TraceAbstraction took 1044.21 ms. Allocated memory is still 2.1 GB. Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 45.4 MB). Peak memory consumption was 45.4 MB. Max. memory is 7.1 GB. [2018-11-18 23:57:37,421 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 0.23 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 341.94 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 41.73 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 581.89 ms. Allocated memory was 1.5 GB in the beginning and 2.1 GB in the end (delta: 653.8 MB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -704.9 MB). Peak memory consumption was 26.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1044.21 ms. Allocated memory is still 2.1 GB. Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 45.4 MB). Peak memory consumption was 45.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 5]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L10] int x=0; VAL [\old(x)=2, x=0] [L24] COND TRUE 1 VAL [\old(x)=0, x=0] [L26] CALL eval() VAL [\old(x)=0, x=0] [L14] COND TRUE 1 [L15] RET x=1 VAL [\old(x)=0, x=1] [L26] eval() VAL [\old(x)=0, x=1] [L27] CALL __VERIFIER_assert(x==0) VAL [\old(cond)=0, \old(x)=0, x=1] [L4] COND TRUE !(cond) VAL [\old(cond)=0, \old(x)=0, cond=0, x=1] [L5] __VERIFIER_error() VAL [\old(cond)=0, \old(x)=0, cond=0, x=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 25 locations, 1 error locations. UNSAFE Result, 0.9s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 19 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 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, 26 NumberOfCodeBlocks, 26 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 81 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 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...