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/array-tiling/skippedu_false-unreach-call.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-18e5b2d-m [2018-11-18 23:09:42,143 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 23:09:42,146 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 23:09:42,159 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 23:09:42,160 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 23:09:42,161 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 23:09:42,162 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 23:09:42,164 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 23:09:42,166 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 23:09:42,167 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 23:09:42,168 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 23:09:42,168 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 23:09:42,169 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 23:09:42,170 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 23:09:42,171 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 23:09:42,172 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 23:09:42,173 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 23:09:42,175 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 23:09:42,177 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 23:09:42,179 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 23:09:42,181 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 23:09:42,182 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 23:09:42,185 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-11-18 23:09:42,198 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 23:09:42,198 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 23:09:42,203 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 23:09:42,205 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 23:09:42,205 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 23:09:42,234 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 23:09:42,234 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 23:09:42,235 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 23:09:42,235 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-18 23:09:42,237 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-18 23:09:42,237 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-18 23:09:42,237 INFO L133 SettingsManager]: * Use SBE=true [2018-11-18 23:09:42,237 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 23:09:42,238 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 23:09:42,238 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 23:09:42,238 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 23:09:42,238 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 23:09:42,238 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 23:09:42,238 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 23:09:42,240 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 23:09:42,240 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 23:09:42,240 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 23:09:42,240 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 23:09:42,240 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 23:09:42,242 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 23:09:42,242 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 23:09:42,242 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 23:09:42,242 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 23:09:42,243 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 23:09:42,243 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 23:09:42,243 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 23:09:42,243 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 23:09:42,243 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-18 23:09:42,244 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 23:09:42,244 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 23:09:42,244 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-18 23:09:42,311 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 23:09:42,325 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 23:09:42,330 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 23:09:42,331 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 23:09:42,332 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 23:09:42,333 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-tiling/skippedu_false-unreach-call.i [2018-11-18 23:09:42,399 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b7fe6671/dbe3427b3f5f4f2386683027b6cf5576/FLAG4db277c33 [2018-11-18 23:09:42,840 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 23:09:42,841 INFO L161 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-tiling/skippedu_false-unreach-call.i [2018-11-18 23:09:42,850 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b7fe6671/dbe3427b3f5f4f2386683027b6cf5576/FLAG4db277c33 [2018-11-18 23:09:43,233 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b7fe6671/dbe3427b3f5f4f2386683027b6cf5576 [2018-11-18 23:09:43,244 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 23:09:43,245 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-11-18 23:09:43,246 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 23:09:43,247 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 23:09:43,250 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 23:09:43,252 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 11:09:43" (1/1) ... [2018-11-18 23:09:43,255 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48f9d43a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:09:43, skipping insertion in model container [2018-11-18 23:09:43,255 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 11:09:43" (1/1) ... [2018-11-18 23:09:43,266 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 23:09:43,289 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 23:09:43,545 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 23:09:43,550 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 23:09:43,582 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 23:09:43,608 INFO L195 MainTranslator]: Completed translation [2018-11-18 23:09:43,609 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:09:43 WrapperNode [2018-11-18 23:09:43,609 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 23:09:43,609 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 23:09:43,610 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 23:09:43,610 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 23:09:43,623 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:09:43" (1/1) ... [2018-11-18 23:09:43,623 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:09:43" (1/1) ... [2018-11-18 23:09:43,633 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:09:43" (1/1) ... [2018-11-18 23:09:43,634 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:09:43" (1/1) ... [2018-11-18 23:09:43,653 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:09:43" (1/1) ... [2018-11-18 23:09:43,660 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:09:43" (1/1) ... [2018-11-18 23:09:43,662 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:09:43" (1/1) ... [2018-11-18 23:09:43,664 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 23:09:43,665 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 23:09:43,665 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 23:09:43,665 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 23:09:43,666 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:09:43" (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 23:09:43,789 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 23:09:43,789 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 23:09:43,789 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-18 23:09:43,790 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 23:09:43,790 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-18 23:09:43,790 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2018-11-18 23:09:43,790 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-18 23:09:43,790 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-11-18 23:09:43,790 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 23:09:43,791 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-18 23:09:43,791 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-18 23:09:43,791 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-18 23:09:43,791 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-18 23:09:43,791 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 23:09:43,792 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 23:09:43,792 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2018-11-18 23:09:44,438 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 23:09:44,438 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 11:09:44 BoogieIcfgContainer [2018-11-18 23:09:44,439 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 23:09:44,440 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 23:09:44,440 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 23:09:44,443 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 23:09:44,443 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 11:09:43" (1/3) ... [2018-11-18 23:09:44,444 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7493c4a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 11:09:44, skipping insertion in model container [2018-11-18 23:09:44,445 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:09:43" (2/3) ... [2018-11-18 23:09:44,445 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7493c4a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 11:09:44, skipping insertion in model container [2018-11-18 23:09:44,445 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 11:09:44" (3/3) ... [2018-11-18 23:09:44,447 INFO L112 eAbstractionObserver]: Analyzing ICFG skippedu_false-unreach-call.i [2018-11-18 23:09:44,455 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 23:09:44,463 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 23:09:44,482 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 23:09:44,532 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 23:09:44,533 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 23:09:44,533 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 23:09:44,533 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 23:09:44,534 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 23:09:44,535 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 23:09:44,535 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 23:09:44,535 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 23:09:44,536 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 23:09:44,555 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2018-11-18 23:09:44,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-11-18 23:09:44,563 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 23:09:44,564 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 23:09:44,566 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 23:09:44,572 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 23:09:44,573 INFO L82 PathProgramCache]: Analyzing trace with hash -1798653287, now seen corresponding path program 1 times [2018-11-18 23:09:44,574 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 23:09:44,575 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 23:09:44,631 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 23:09:44,632 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 23:09:44,632 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 23:09:44,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 23:09:44,788 INFO L256 TraceCheckUtils]: 0: Hoare triple {35#true} call ULTIMATE.init(); {35#true} is VALID [2018-11-18 23:09:44,792 INFO L273 TraceCheckUtils]: 1: Hoare triple {35#true} #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];~SIZE~0 := 0; {35#true} is VALID [2018-11-18 23:09:44,792 INFO L273 TraceCheckUtils]: 2: Hoare triple {35#true} assume true; {35#true} is VALID [2018-11-18 23:09:44,793 INFO L268 TraceCheckUtils]: 3: Hoare quadruple {35#true} {35#true} #74#return; {35#true} is VALID [2018-11-18 23:09:44,793 INFO L256 TraceCheckUtils]: 4: Hoare triple {35#true} call #t~ret7 := main(); {35#true} is VALID [2018-11-18 23:09:44,793 INFO L273 TraceCheckUtils]: 5: Hoare triple {35#true} assume -2147483648 <= #t~nondet1 && #t~nondet1 <= 2147483647;~SIZE~0 := #t~nondet1;havoc #t~nondet1; {35#true} is VALID [2018-11-18 23:09:44,794 INFO L273 TraceCheckUtils]: 6: Hoare triple {35#true} assume ~SIZE~0 > 1;havoc ~i~0;call ~#a~0.base, ~#a~0.offset := #Ultimate.alloc(4 * ~SIZE~0); {35#true} is VALID [2018-11-18 23:09:44,794 INFO L273 TraceCheckUtils]: 7: Hoare triple {35#true} assume !(0 != (if ~SIZE~0 < 0 && 0 != ~SIZE~0 % 2 then ~SIZE~0 % 2 - 2 else ~SIZE~0 % 2));assume 0 != (if 0 == (if ~SIZE~0 < 0 && 0 != ~SIZE~0 % 2 then ~SIZE~0 % 2 - 2 else ~SIZE~0 % 2) then 1 else 0);~i~0 := 1; {35#true} is VALID [2018-11-18 23:09:44,807 INFO L273 TraceCheckUtils]: 8: Hoare triple {35#true} assume !true; {36#false} is VALID [2018-11-18 23:09:44,808 INFO L273 TraceCheckUtils]: 9: Hoare triple {36#false} ~i~0 := 0; {36#false} is VALID [2018-11-18 23:09:44,808 INFO L273 TraceCheckUtils]: 10: Hoare triple {36#false} assume true; {36#false} is VALID [2018-11-18 23:09:44,808 INFO L273 TraceCheckUtils]: 11: Hoare triple {36#false} assume !!(~i~0 < ~SIZE~0);call #t~mem6 := read~int(~#a~0.base, ~#a~0.offset + 4 * ~i~0, 4); {36#false} is VALID [2018-11-18 23:09:44,809 INFO L256 TraceCheckUtils]: 12: Hoare triple {36#false} call __VERIFIER_assert((if #t~mem6 <= ~i~0 then 1 else 0)); {36#false} is VALID [2018-11-18 23:09:44,809 INFO L273 TraceCheckUtils]: 13: Hoare triple {36#false} ~cond := #in~cond; {36#false} is VALID [2018-11-18 23:09:44,809 INFO L273 TraceCheckUtils]: 14: Hoare triple {36#false} assume 0 == ~cond; {36#false} is VALID [2018-11-18 23:09:44,810 INFO L273 TraceCheckUtils]: 15: Hoare triple {36#false} assume !false; {36#false} is VALID [2018-11-18 23:09:44,814 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 23:09:44,817 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 23:09:44,818 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 23:09:44,823 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2018-11-18 23:09:44,826 INFO L84 Accepts]: Finished accepts. word is accepted. [2018-11-18 23:09:44,830 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states. [2018-11-18 23:09:45,000 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 16 edges. 16 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2018-11-18 23:09:45,001 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-18 23:09:45,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-18 23:09:45,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 23:09:45,017 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 2 states. [2018-11-18 23:09:45,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 23:09:45,212 INFO L93 Difference]: Finished difference Result 50 states and 61 transitions. [2018-11-18 23:09:45,212 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-18 23:09:45,212 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2018-11-18 23:09:45,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 23:09:45,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2018-11-18 23:09:45,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 61 transitions. [2018-11-18 23:09:45,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2018-11-18 23:09:45,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 61 transitions. [2018-11-18 23:09:45,232 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states and 61 transitions. [2018-11-18 23:09:45,678 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 61 edges. 61 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2018-11-18 23:09:45,689 INFO L225 Difference]: With dead ends: 50 [2018-11-18 23:09:45,690 INFO L226 Difference]: Without dead ends: 26 [2018-11-18 23:09:45,693 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 23:09:45,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-11-18 23:09:45,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2018-11-18 23:09:45,732 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2018-11-18 23:09:45,733 INFO L82 GeneralOperation]: Start isEquivalent. First operand 26 states. Second operand 26 states. [2018-11-18 23:09:45,733 INFO L74 IsIncluded]: Start isIncluded. First operand 26 states. Second operand 26 states. [2018-11-18 23:09:45,733 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 26 states. [2018-11-18 23:09:45,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 23:09:45,738 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2018-11-18 23:09:45,738 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2018-11-18 23:09:45,739 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-18 23:09:45,739 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2018-11-18 23:09:45,740 INFO L74 IsIncluded]: Start isIncluded. First operand 26 states. Second operand 26 states. [2018-11-18 23:09:45,740 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 26 states. [2018-11-18 23:09:45,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 23:09:45,744 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2018-11-18 23:09:45,745 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2018-11-18 23:09:45,745 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-18 23:09:45,745 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2018-11-18 23:09:45,745 INFO L88 GeneralOperation]: Finished isEquivalent. [2018-11-18 23:09:45,746 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2018-11-18 23:09:45,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-11-18 23:09:45,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2018-11-18 23:09:45,750 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 16 [2018-11-18 23:09:45,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 23:09:45,751 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2018-11-18 23:09:45,751 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-18 23:09:45,751 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2018-11-18 23:09:45,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-11-18 23:09:45,752 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 23:09:45,752 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 23:09:45,753 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 23:09:45,753 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 23:09:45,753 INFO L82 PathProgramCache]: Analyzing trace with hash -542838627, now seen corresponding path program 1 times [2018-11-18 23:09:45,753 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 23:09:45,754 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 23:09:45,755 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 23:09:45,755 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 23:09:45,755 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 23:09:45,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 23:09:46,005 INFO L256 TraceCheckUtils]: 0: Hoare triple {186#true} call ULTIMATE.init(); {186#true} is VALID [2018-11-18 23:09:46,005 INFO L273 TraceCheckUtils]: 1: Hoare triple {186#true} #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];~SIZE~0 := 0; {186#true} is VALID [2018-11-18 23:09:46,006 INFO L273 TraceCheckUtils]: 2: Hoare triple {186#true} assume true; {186#true} is VALID [2018-11-18 23:09:46,006 INFO L268 TraceCheckUtils]: 3: Hoare quadruple {186#true} {186#true} #74#return; {186#true} is VALID [2018-11-18 23:09:46,006 INFO L256 TraceCheckUtils]: 4: Hoare triple {186#true} call #t~ret7 := main(); {186#true} is VALID [2018-11-18 23:09:46,007 INFO L273 TraceCheckUtils]: 5: Hoare triple {186#true} assume -2147483648 <= #t~nondet1 && #t~nondet1 <= 2147483647;~SIZE~0 := #t~nondet1;havoc #t~nondet1; {186#true} is VALID [2018-11-18 23:09:46,008 INFO L273 TraceCheckUtils]: 6: Hoare triple {186#true} assume ~SIZE~0 > 1;havoc ~i~0;call ~#a~0.base, ~#a~0.offset := #Ultimate.alloc(4 * ~SIZE~0); {188#(<= 2 ~SIZE~0)} is VALID [2018-11-18 23:09:46,009 INFO L273 TraceCheckUtils]: 7: Hoare triple {188#(<= 2 ~SIZE~0)} assume !(0 != (if ~SIZE~0 < 0 && 0 != ~SIZE~0 % 2 then ~SIZE~0 % 2 - 2 else ~SIZE~0 % 2));assume 0 != (if 0 == (if ~SIZE~0 < 0 && 0 != ~SIZE~0 % 2 then ~SIZE~0 % 2 - 2 else ~SIZE~0 % 2) then 1 else 0);~i~0 := 1; {189#(and (= main_~i~0 1) (= ~SIZE~0 (* 2 (div ~SIZE~0 2))) (<= 2 ~SIZE~0))} is VALID [2018-11-18 23:09:46,013 INFO L273 TraceCheckUtils]: 8: Hoare triple {189#(and (= main_~i~0 1) (= ~SIZE~0 (* 2 (div ~SIZE~0 2))) (<= 2 ~SIZE~0))} assume true; {189#(and (= main_~i~0 1) (= ~SIZE~0 (* 2 (div ~SIZE~0 2))) (<= 2 ~SIZE~0))} is VALID [2018-11-18 23:09:46,031 INFO L273 TraceCheckUtils]: 9: Hoare triple {189#(and (= main_~i~0 1) (= ~SIZE~0 (* 2 (div ~SIZE~0 2))) (<= 2 ~SIZE~0))} assume !(~i~0 <= (if ~SIZE~0 < 0 && 0 != ~SIZE~0 % 2 then 1 + ~SIZE~0 / 2 else ~SIZE~0 / 2)); {187#false} is VALID [2018-11-18 23:09:46,032 INFO L273 TraceCheckUtils]: 10: Hoare triple {187#false} ~i~0 := 0; {187#false} is VALID [2018-11-18 23:09:46,032 INFO L273 TraceCheckUtils]: 11: Hoare triple {187#false} assume true; {187#false} is VALID [2018-11-18 23:09:46,032 INFO L273 TraceCheckUtils]: 12: Hoare triple {187#false} assume !!(~i~0 < ~SIZE~0);call #t~mem6 := read~int(~#a~0.base, ~#a~0.offset + 4 * ~i~0, 4); {187#false} is VALID [2018-11-18 23:09:46,032 INFO L256 TraceCheckUtils]: 13: Hoare triple {187#false} call __VERIFIER_assert((if #t~mem6 <= ~i~0 then 1 else 0)); {187#false} is VALID [2018-11-18 23:09:46,035 INFO L273 TraceCheckUtils]: 14: Hoare triple {187#false} ~cond := #in~cond; {187#false} is VALID [2018-11-18 23:09:46,035 INFO L273 TraceCheckUtils]: 15: Hoare triple {187#false} assume 0 == ~cond; {187#false} is VALID [2018-11-18 23:09:46,035 INFO L273 TraceCheckUtils]: 16: Hoare triple {187#false} assume !false; {187#false} is VALID [2018-11-18 23:09:46,040 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 23:09:46,040 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 23:09:46,040 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-18 23:09:46,043 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2018-11-18 23:09:46,043 INFO L84 Accepts]: Finished accepts. word is accepted. [2018-11-18 23:09:46,043 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 4 states. [2018-11-18 23:09:46,095 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 17 edges. 17 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2018-11-18 23:09:46,095 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 23:09:46,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 23:09:46,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-18 23:09:46,096 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand 4 states. [2018-11-18 23:09:46,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 23:09:46,782 INFO L93 Difference]: Finished difference Result 44 states and 50 transitions. [2018-11-18 23:09:46,783 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 23:09:46,783 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2018-11-18 23:09:46,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 23:09:46,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-18 23:09:46,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 50 transitions. [2018-11-18 23:09:46,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-18 23:09:46,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 50 transitions. [2018-11-18 23:09:46,791 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 4 states and 50 transitions. [2018-11-18 23:09:46,887 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 50 edges. 50 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2018-11-18 23:09:46,890 INFO L225 Difference]: With dead ends: 44 [2018-11-18 23:09:46,890 INFO L226 Difference]: Without dead ends: 32 [2018-11-18 23:09:46,891 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-18 23:09:46,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-11-18 23:09:46,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 28. [2018-11-18 23:09:46,915 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2018-11-18 23:09:46,915 INFO L82 GeneralOperation]: Start isEquivalent. First operand 32 states. Second operand 28 states. [2018-11-18 23:09:46,915 INFO L74 IsIncluded]: Start isIncluded. First operand 32 states. Second operand 28 states. [2018-11-18 23:09:46,915 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 28 states. [2018-11-18 23:09:46,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 23:09:46,919 INFO L93 Difference]: Finished difference Result 32 states and 37 transitions. [2018-11-18 23:09:46,919 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 37 transitions. [2018-11-18 23:09:46,919 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-18 23:09:46,920 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2018-11-18 23:09:46,920 INFO L74 IsIncluded]: Start isIncluded. First operand 28 states. Second operand 32 states. [2018-11-18 23:09:46,920 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 32 states. [2018-11-18 23:09:46,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 23:09:46,923 INFO L93 Difference]: Finished difference Result 32 states and 37 transitions. [2018-11-18 23:09:46,923 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 37 transitions. [2018-11-18 23:09:46,924 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-18 23:09:46,924 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2018-11-18 23:09:46,924 INFO L88 GeneralOperation]: Finished isEquivalent. [2018-11-18 23:09:46,924 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2018-11-18 23:09:46,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-11-18 23:09:46,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2018-11-18 23:09:46,927 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 17 [2018-11-18 23:09:46,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 23:09:46,927 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2018-11-18 23:09:46,927 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 23:09:46,928 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2018-11-18 23:09:46,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-11-18 23:09:46,928 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 23:09:46,929 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 23:09:46,929 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 23:09:46,929 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 23:09:46,929 INFO L82 PathProgramCache]: Analyzing trace with hash -1697775982, now seen corresponding path program 1 times [2018-11-18 23:09:46,930 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 23:09:46,930 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 23:09:46,931 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 23:09:46,931 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 23:09:46,931 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 23:09:46,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 23:09:47,744 INFO L256 TraceCheckUtils]: 0: Hoare triple {349#true} call ULTIMATE.init(); {349#true} is VALID [2018-11-18 23:09:47,745 INFO L273 TraceCheckUtils]: 1: Hoare triple {349#true} #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];~SIZE~0 := 0; {349#true} is VALID [2018-11-18 23:09:47,745 INFO L273 TraceCheckUtils]: 2: Hoare triple {349#true} assume true; {349#true} is VALID [2018-11-18 23:09:47,745 INFO L268 TraceCheckUtils]: 3: Hoare quadruple {349#true} {349#true} #74#return; {349#true} is VALID [2018-11-18 23:09:47,745 INFO L256 TraceCheckUtils]: 4: Hoare triple {349#true} call #t~ret7 := main(); {349#true} is VALID [2018-11-18 23:09:47,746 INFO L273 TraceCheckUtils]: 5: Hoare triple {349#true} assume -2147483648 <= #t~nondet1 && #t~nondet1 <= 2147483647;~SIZE~0 := #t~nondet1;havoc #t~nondet1; {349#true} is VALID [2018-11-18 23:09:47,747 INFO L273 TraceCheckUtils]: 6: Hoare triple {349#true} assume ~SIZE~0 > 1;havoc ~i~0;call ~#a~0.base, ~#a~0.offset := #Ultimate.alloc(4 * ~SIZE~0); {351#(and (<= 2 ~SIZE~0) (= |main_~#a~0.offset| 0))} is VALID [2018-11-18 23:09:47,749 INFO L273 TraceCheckUtils]: 7: Hoare triple {351#(and (<= 2 ~SIZE~0) (= |main_~#a~0.offset| 0))} assume !(0 != (if ~SIZE~0 < 0 && 0 != ~SIZE~0 % 2 then ~SIZE~0 % 2 - 2 else ~SIZE~0 % 2));assume 0 != (if 0 == (if ~SIZE~0 < 0 && 0 != ~SIZE~0 % 2 then ~SIZE~0 % 2 - 2 else ~SIZE~0 % 2) then 1 else 0);~i~0 := 1; {352#(and (= main_~i~0 1) (< 0 (+ ~SIZE~0 1)) (= |main_~#a~0.offset| 0))} is VALID [2018-11-18 23:09:47,750 INFO L273 TraceCheckUtils]: 8: Hoare triple {352#(and (= main_~i~0 1) (< 0 (+ ~SIZE~0 1)) (= |main_~#a~0.offset| 0))} assume true; {352#(and (= main_~i~0 1) (< 0 (+ ~SIZE~0 1)) (= |main_~#a~0.offset| 0))} is VALID [2018-11-18 23:09:47,758 INFO L273 TraceCheckUtils]: 9: Hoare triple {352#(and (= main_~i~0 1) (< 0 (+ ~SIZE~0 1)) (= |main_~#a~0.offset| 0))} assume !!(~i~0 <= (if ~SIZE~0 < 0 && 0 != ~SIZE~0 % 2 then 1 + ~SIZE~0 / 2 else ~SIZE~0 / 2));call #t~mem3 := read~int(~#a~0.base, ~#a~0.offset + 4 * (2 * ~i~0 - 2), 4); {353#(and (= main_~i~0 1) (= |main_~#a~0.offset| 0))} is VALID [2018-11-18 23:09:47,760 INFO L273 TraceCheckUtils]: 10: Hoare triple {353#(and (= main_~i~0 1) (= |main_~#a~0.offset| 0))} assume #t~mem3 > ~i~0;havoc #t~mem3;call write~int(2 * ~i~0 - 2, ~#a~0.base, ~#a~0.offset + 4 * (2 * ~i~0 - 2), 4); {354#(and (= main_~i~0 1) (= 0 (select (select |#memory_int| |main_~#a~0.base|) (+ |main_~#a~0.offset| (* 8 main_~i~0) (- 8)))) (= |main_~#a~0.offset| 0))} is VALID [2018-11-18 23:09:47,761 INFO L273 TraceCheckUtils]: 11: Hoare triple {354#(and (= main_~i~0 1) (= 0 (select (select |#memory_int| |main_~#a~0.base|) (+ |main_~#a~0.offset| (* 8 main_~i~0) (- 8)))) (= |main_~#a~0.offset| 0))} call #t~mem4 := read~int(~#a~0.base, ~#a~0.offset + 4 * (2 * ~i~0 - 1), 4); {354#(and (= main_~i~0 1) (= 0 (select (select |#memory_int| |main_~#a~0.base|) (+ |main_~#a~0.offset| (* 8 main_~i~0) (- 8)))) (= |main_~#a~0.offset| 0))} is VALID [2018-11-18 23:09:47,761 INFO L273 TraceCheckUtils]: 12: Hoare triple {354#(and (= main_~i~0 1) (= 0 (select (select |#memory_int| |main_~#a~0.base|) (+ |main_~#a~0.offset| (* 8 main_~i~0) (- 8)))) (= |main_~#a~0.offset| 0))} assume !(#t~mem4 > ~i~0);havoc #t~mem4; {354#(and (= main_~i~0 1) (= 0 (select (select |#memory_int| |main_~#a~0.base|) (+ |main_~#a~0.offset| (* 8 main_~i~0) (- 8)))) (= |main_~#a~0.offset| 0))} is VALID [2018-11-18 23:09:47,762 INFO L273 TraceCheckUtils]: 13: Hoare triple {354#(and (= main_~i~0 1) (= 0 (select (select |#memory_int| |main_~#a~0.base|) (+ |main_~#a~0.offset| (* 8 main_~i~0) (- 8)))) (= |main_~#a~0.offset| 0))} #t~post2 := ~i~0;~i~0 := 1 + #t~post2;havoc #t~post2; {355#(and (or (and (not (= (* 2 (div ~SIZE~0 2)) ~SIZE~0)) (<= (+ (* 8 main_~i~0) |main_~#a~0.offset|) (+ (* 8 (div ~SIZE~0 2)) 15)) (< ~SIZE~0 0)) (<= (+ (* 8 main_~i~0) |main_~#a~0.offset|) (+ (* 8 (div ~SIZE~0 2)) 7)) (= 0 (select (select |#memory_int| |main_~#a~0.base|) 0))) (= |main_~#a~0.offset| 0))} is VALID [2018-11-18 23:09:47,764 INFO L273 TraceCheckUtils]: 14: Hoare triple {355#(and (or (and (not (= (* 2 (div ~SIZE~0 2)) ~SIZE~0)) (<= (+ (* 8 main_~i~0) |main_~#a~0.offset|) (+ (* 8 (div ~SIZE~0 2)) 15)) (< ~SIZE~0 0)) (<= (+ (* 8 main_~i~0) |main_~#a~0.offset|) (+ (* 8 (div ~SIZE~0 2)) 7)) (= 0 (select (select |#memory_int| |main_~#a~0.base|) 0))) (= |main_~#a~0.offset| 0))} assume true; {355#(and (or (and (not (= (* 2 (div ~SIZE~0 2)) ~SIZE~0)) (<= (+ (* 8 main_~i~0) |main_~#a~0.offset|) (+ (* 8 (div ~SIZE~0 2)) 15)) (< ~SIZE~0 0)) (<= (+ (* 8 main_~i~0) |main_~#a~0.offset|) (+ (* 8 (div ~SIZE~0 2)) 7)) (= 0 (select (select |#memory_int| |main_~#a~0.base|) 0))) (= |main_~#a~0.offset| 0))} is VALID [2018-11-18 23:09:47,766 INFO L273 TraceCheckUtils]: 15: Hoare triple {355#(and (or (and (not (= (* 2 (div ~SIZE~0 2)) ~SIZE~0)) (<= (+ (* 8 main_~i~0) |main_~#a~0.offset|) (+ (* 8 (div ~SIZE~0 2)) 15)) (< ~SIZE~0 0)) (<= (+ (* 8 main_~i~0) |main_~#a~0.offset|) (+ (* 8 (div ~SIZE~0 2)) 7)) (= 0 (select (select |#memory_int| |main_~#a~0.base|) 0))) (= |main_~#a~0.offset| 0))} assume !(~i~0 <= (if ~SIZE~0 < 0 && 0 != ~SIZE~0 % 2 then 1 + ~SIZE~0 / 2 else ~SIZE~0 / 2)); {356#(and (= |main_~#a~0.offset| 0) (= 0 (select (select |#memory_int| |main_~#a~0.base|) 0)))} is VALID [2018-11-18 23:09:47,767 INFO L273 TraceCheckUtils]: 16: Hoare triple {356#(and (= |main_~#a~0.offset| 0) (= 0 (select (select |#memory_int| |main_~#a~0.base|) 0)))} ~i~0 := 0; {357#(and (= 0 (select (select |#memory_int| |main_~#a~0.base|) (+ (* 4 main_~i~0) |main_~#a~0.offset|))) (= main_~i~0 0) (= |main_~#a~0.offset| 0))} is VALID [2018-11-18 23:09:47,770 INFO L273 TraceCheckUtils]: 17: Hoare triple {357#(and (= 0 (select (select |#memory_int| |main_~#a~0.base|) (+ (* 4 main_~i~0) |main_~#a~0.offset|))) (= main_~i~0 0) (= |main_~#a~0.offset| 0))} assume true; {357#(and (= 0 (select (select |#memory_int| |main_~#a~0.base|) (+ (* 4 main_~i~0) |main_~#a~0.offset|))) (= main_~i~0 0) (= |main_~#a~0.offset| 0))} is VALID [2018-11-18 23:09:47,773 INFO L273 TraceCheckUtils]: 18: Hoare triple {357#(and (= 0 (select (select |#memory_int| |main_~#a~0.base|) (+ (* 4 main_~i~0) |main_~#a~0.offset|))) (= main_~i~0 0) (= |main_~#a~0.offset| 0))} assume !!(~i~0 < ~SIZE~0);call #t~mem6 := read~int(~#a~0.base, ~#a~0.offset + 4 * ~i~0, 4); {358#(and (= |main_#t~mem6| 0) (= main_~i~0 0))} is VALID [2018-11-18 23:09:47,774 INFO L256 TraceCheckUtils]: 19: Hoare triple {358#(and (= |main_#t~mem6| 0) (= main_~i~0 0))} call __VERIFIER_assert((if #t~mem6 <= ~i~0 then 1 else 0)); {359#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2018-11-18 23:09:47,775 INFO L273 TraceCheckUtils]: 20: Hoare triple {359#(not (= |__VERIFIER_assert_#in~cond| 0))} ~cond := #in~cond; {360#(not (= __VERIFIER_assert_~cond 0))} is VALID [2018-11-18 23:09:47,775 INFO L273 TraceCheckUtils]: 21: Hoare triple {360#(not (= __VERIFIER_assert_~cond 0))} assume 0 == ~cond; {350#false} is VALID [2018-11-18 23:09:47,776 INFO L273 TraceCheckUtils]: 22: Hoare triple {350#false} assume !false; {350#false} is VALID [2018-11-18 23:09:47,780 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 23:09:47,780 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 23:09:47,781 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 23:09:47,799 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 23:09:47,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 23:09:47,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 23:09:47,841 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 23:09:47,995 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-11-18 23:09:48,006 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-11-18 23:09:48,008 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-18 23:09:48,012 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 23:09:48,020 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-18 23:09:48,021 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:15, output treesize:11 [2018-11-18 23:09:48,191 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2018-11-18 23:09:48,197 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 3 [2018-11-18 23:09:48,198 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-18 23:09:48,201 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 23:09:48,211 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-18 23:09:48,212 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:22, output treesize:7 [2018-11-18 23:09:48,223 WARN L383 uantifierElimination]: Trying to double check SDD result, but SMT solver's response was UNKNOWN. [2018-11-18 23:09:48,491 INFO L256 TraceCheckUtils]: 0: Hoare triple {349#true} call ULTIMATE.init(); {349#true} is VALID [2018-11-18 23:09:48,491 INFO L273 TraceCheckUtils]: 1: Hoare triple {349#true} #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];~SIZE~0 := 0; {349#true} is VALID [2018-11-18 23:09:48,492 INFO L273 TraceCheckUtils]: 2: Hoare triple {349#true} assume true; {349#true} is VALID [2018-11-18 23:09:48,492 INFO L268 TraceCheckUtils]: 3: Hoare quadruple {349#true} {349#true} #74#return; {349#true} is VALID [2018-11-18 23:09:48,493 INFO L256 TraceCheckUtils]: 4: Hoare triple {349#true} call #t~ret7 := main(); {349#true} is VALID [2018-11-18 23:09:48,493 INFO L273 TraceCheckUtils]: 5: Hoare triple {349#true} assume -2147483648 <= #t~nondet1 && #t~nondet1 <= 2147483647;~SIZE~0 := #t~nondet1;havoc #t~nondet1; {349#true} is VALID [2018-11-18 23:09:48,495 INFO L273 TraceCheckUtils]: 6: Hoare triple {349#true} assume ~SIZE~0 > 1;havoc ~i~0;call ~#a~0.base, ~#a~0.offset := #Ultimate.alloc(4 * ~SIZE~0); {382#(= |main_~#a~0.offset| 0)} is VALID [2018-11-18 23:09:48,497 INFO L273 TraceCheckUtils]: 7: Hoare triple {382#(= |main_~#a~0.offset| 0)} assume !(0 != (if ~SIZE~0 < 0 && 0 != ~SIZE~0 % 2 then ~SIZE~0 % 2 - 2 else ~SIZE~0 % 2));assume 0 != (if 0 == (if ~SIZE~0 < 0 && 0 != ~SIZE~0 % 2 then ~SIZE~0 % 2 - 2 else ~SIZE~0 % 2) then 1 else 0);~i~0 := 1; {353#(and (= main_~i~0 1) (= |main_~#a~0.offset| 0))} is VALID [2018-11-18 23:09:48,500 INFO L273 TraceCheckUtils]: 8: Hoare triple {353#(and (= main_~i~0 1) (= |main_~#a~0.offset| 0))} assume true; {353#(and (= main_~i~0 1) (= |main_~#a~0.offset| 0))} is VALID [2018-11-18 23:09:48,500 INFO L273 TraceCheckUtils]: 9: Hoare triple {353#(and (= main_~i~0 1) (= |main_~#a~0.offset| 0))} assume !!(~i~0 <= (if ~SIZE~0 < 0 && 0 != ~SIZE~0 % 2 then 1 + ~SIZE~0 / 2 else ~SIZE~0 / 2));call #t~mem3 := read~int(~#a~0.base, ~#a~0.offset + 4 * (2 * ~i~0 - 2), 4); {353#(and (= main_~i~0 1) (= |main_~#a~0.offset| 0))} is VALID [2018-11-18 23:09:48,502 INFO L273 TraceCheckUtils]: 10: Hoare triple {353#(and (= main_~i~0 1) (= |main_~#a~0.offset| 0))} assume #t~mem3 > ~i~0;havoc #t~mem3;call write~int(2 * ~i~0 - 2, ~#a~0.base, ~#a~0.offset + 4 * (2 * ~i~0 - 2), 4); {356#(and (= |main_~#a~0.offset| 0) (= 0 (select (select |#memory_int| |main_~#a~0.base|) 0)))} is VALID [2018-11-18 23:09:48,508 INFO L273 TraceCheckUtils]: 11: Hoare triple {356#(and (= |main_~#a~0.offset| 0) (= 0 (select (select |#memory_int| |main_~#a~0.base|) 0)))} call #t~mem4 := read~int(~#a~0.base, ~#a~0.offset + 4 * (2 * ~i~0 - 1), 4); {356#(and (= |main_~#a~0.offset| 0) (= 0 (select (select |#memory_int| |main_~#a~0.base|) 0)))} is VALID [2018-11-18 23:09:48,510 INFO L273 TraceCheckUtils]: 12: Hoare triple {356#(and (= |main_~#a~0.offset| 0) (= 0 (select (select |#memory_int| |main_~#a~0.base|) 0)))} assume !(#t~mem4 > ~i~0);havoc #t~mem4; {356#(and (= |main_~#a~0.offset| 0) (= 0 (select (select |#memory_int| |main_~#a~0.base|) 0)))} is VALID [2018-11-18 23:09:48,510 INFO L273 TraceCheckUtils]: 13: Hoare triple {356#(and (= |main_~#a~0.offset| 0) (= 0 (select (select |#memory_int| |main_~#a~0.base|) 0)))} #t~post2 := ~i~0;~i~0 := 1 + #t~post2;havoc #t~post2; {356#(and (= |main_~#a~0.offset| 0) (= 0 (select (select |#memory_int| |main_~#a~0.base|) 0)))} is VALID [2018-11-18 23:09:48,512 INFO L273 TraceCheckUtils]: 14: Hoare triple {356#(and (= |main_~#a~0.offset| 0) (= 0 (select (select |#memory_int| |main_~#a~0.base|) 0)))} assume true; {356#(and (= |main_~#a~0.offset| 0) (= 0 (select (select |#memory_int| |main_~#a~0.base|) 0)))} is VALID [2018-11-18 23:09:48,513 INFO L273 TraceCheckUtils]: 15: Hoare triple {356#(and (= |main_~#a~0.offset| 0) (= 0 (select (select |#memory_int| |main_~#a~0.base|) 0)))} assume !(~i~0 <= (if ~SIZE~0 < 0 && 0 != ~SIZE~0 % 2 then 1 + ~SIZE~0 / 2 else ~SIZE~0 / 2)); {356#(and (= |main_~#a~0.offset| 0) (= 0 (select (select |#memory_int| |main_~#a~0.base|) 0)))} is VALID [2018-11-18 23:09:48,515 INFO L273 TraceCheckUtils]: 16: Hoare triple {356#(and (= |main_~#a~0.offset| 0) (= 0 (select (select |#memory_int| |main_~#a~0.base|) 0)))} ~i~0 := 0; {357#(and (= 0 (select (select |#memory_int| |main_~#a~0.base|) (+ (* 4 main_~i~0) |main_~#a~0.offset|))) (= main_~i~0 0) (= |main_~#a~0.offset| 0))} is VALID [2018-11-18 23:09:48,518 INFO L273 TraceCheckUtils]: 17: Hoare triple {357#(and (= 0 (select (select |#memory_int| |main_~#a~0.base|) (+ (* 4 main_~i~0) |main_~#a~0.offset|))) (= main_~i~0 0) (= |main_~#a~0.offset| 0))} assume true; {357#(and (= 0 (select (select |#memory_int| |main_~#a~0.base|) (+ (* 4 main_~i~0) |main_~#a~0.offset|))) (= main_~i~0 0) (= |main_~#a~0.offset| 0))} is VALID [2018-11-18 23:09:48,526 INFO L273 TraceCheckUtils]: 18: Hoare triple {357#(and (= 0 (select (select |#memory_int| |main_~#a~0.base|) (+ (* 4 main_~i~0) |main_~#a~0.offset|))) (= main_~i~0 0) (= |main_~#a~0.offset| 0))} assume !!(~i~0 < ~SIZE~0);call #t~mem6 := read~int(~#a~0.base, ~#a~0.offset + 4 * ~i~0, 4); {419#(and (<= |main_#t~mem6| 0) (= main_~i~0 0))} is VALID [2018-11-18 23:09:48,531 INFO L256 TraceCheckUtils]: 19: Hoare triple {419#(and (<= |main_#t~mem6| 0) (= main_~i~0 0))} call __VERIFIER_assert((if #t~mem6 <= ~i~0 then 1 else 0)); {423#(= |__VERIFIER_assert_#in~cond| 1)} is VALID [2018-11-18 23:09:48,531 INFO L273 TraceCheckUtils]: 20: Hoare triple {423#(= |__VERIFIER_assert_#in~cond| 1)} ~cond := #in~cond; {427#(= 1 __VERIFIER_assert_~cond)} is VALID [2018-11-18 23:09:48,533 INFO L273 TraceCheckUtils]: 21: Hoare triple {427#(= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {350#false} is VALID [2018-11-18 23:09:48,533 INFO L273 TraceCheckUtils]: 22: Hoare triple {350#false} assume !false; {350#false} is VALID [2018-11-18 23:09:48,537 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 23:09:48,566 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 23:09:48,566 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 16 [2018-11-18 23:09:48,567 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 23 [2018-11-18 23:09:48,567 INFO L84 Accepts]: Finished accepts. word is accepted. [2018-11-18 23:09:48,569 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 16 states. [2018-11-18 23:09:48,733 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 37 edges. 37 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2018-11-18 23:09:48,733 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-11-18 23:09:48,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-11-18 23:09:48,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2018-11-18 23:09:48,735 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand 16 states. [2018-11-18 23:09:50,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 23:09:50,283 INFO L93 Difference]: Finished difference Result 68 states and 80 transitions. [2018-11-18 23:09:50,283 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-18 23:09:50,283 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 23 [2018-11-18 23:09:50,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 23:09:50,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-11-18 23:09:50,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 80 transitions. [2018-11-18 23:09:50,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-11-18 23:09:50,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 80 transitions. [2018-11-18 23:09:50,295 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 12 states and 80 transitions. [2018-11-18 23:09:50,430 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 80 edges. 80 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2018-11-18 23:09:50,435 INFO L225 Difference]: With dead ends: 68 [2018-11-18 23:09:50,435 INFO L226 Difference]: Without dead ends: 66 [2018-11-18 23:09:50,436 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=105, Invalid=401, Unknown=0, NotChecked=0, Total=506 [2018-11-18 23:09:50,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2018-11-18 23:09:50,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 43. [2018-11-18 23:09:50,516 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2018-11-18 23:09:50,516 INFO L82 GeneralOperation]: Start isEquivalent. First operand 66 states. Second operand 43 states. [2018-11-18 23:09:50,517 INFO L74 IsIncluded]: Start isIncluded. First operand 66 states. Second operand 43 states. [2018-11-18 23:09:50,517 INFO L87 Difference]: Start difference. First operand 66 states. Second operand 43 states. [2018-11-18 23:09:50,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 23:09:50,524 INFO L93 Difference]: Finished difference Result 66 states and 78 transitions. [2018-11-18 23:09:50,524 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 78 transitions. [2018-11-18 23:09:50,525 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-18 23:09:50,525 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2018-11-18 23:09:50,526 INFO L74 IsIncluded]: Start isIncluded. First operand 43 states. Second operand 66 states. [2018-11-18 23:09:50,526 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 66 states. [2018-11-18 23:09:50,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 23:09:50,531 INFO L93 Difference]: Finished difference Result 66 states and 78 transitions. [2018-11-18 23:09:50,532 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 78 transitions. [2018-11-18 23:09:50,536 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-18 23:09:50,537 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2018-11-18 23:09:50,537 INFO L88 GeneralOperation]: Finished isEquivalent. [2018-11-18 23:09:50,537 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2018-11-18 23:09:50,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-11-18 23:09:50,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 50 transitions. [2018-11-18 23:09:50,543 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 50 transitions. Word has length 23 [2018-11-18 23:09:50,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 23:09:50,543 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 50 transitions. [2018-11-18 23:09:50,543 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-11-18 23:09:50,543 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 50 transitions. [2018-11-18 23:09:50,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-11-18 23:09:50,544 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 23:09:50,544 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 23:09:50,545 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 23:09:50,545 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 23:09:50,545 INFO L82 PathProgramCache]: Analyzing trace with hash 2010385300, now seen corresponding path program 1 times [2018-11-18 23:09:50,545 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 23:09:50,546 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 23:09:50,546 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 23:09:50,547 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 23:09:50,547 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 23:09:50,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 23:09:50,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 23:09:50,616 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-18 23:09:50,648 WARN L170 areAnnotationChecker]: ULTIMATE.initENTRY has no Hoare annotation [2018-11-18 23:09:50,648 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2018-11-18 23:09:50,649 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2018-11-18 23:09:50,649 WARN L170 areAnnotationChecker]: mainENTRY has no Hoare annotation [2018-11-18 23:09:50,649 WARN L170 areAnnotationChecker]: __VERIFIER_assertENTRY has no Hoare annotation [2018-11-18 23:09:50,649 WARN L170 areAnnotationChecker]: ULTIMATE.initFINAL has no Hoare annotation [2018-11-18 23:09:50,649 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2018-11-18 23:09:50,649 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2018-11-18 23:09:50,649 WARN L170 areAnnotationChecker]: L13 has no Hoare annotation [2018-11-18 23:09:50,650 WARN L170 areAnnotationChecker]: L13 has no Hoare annotation [2018-11-18 23:09:50,650 WARN L170 areAnnotationChecker]: L5 has no Hoare annotation [2018-11-18 23:09:50,650 WARN L170 areAnnotationChecker]: L5 has no Hoare annotation [2018-11-18 23:09:50,650 WARN L170 areAnnotationChecker]: ULTIMATE.initEXIT has no Hoare annotation [2018-11-18 23:09:50,650 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2018-11-18 23:09:50,650 WARN L170 areAnnotationChecker]: L18 has no Hoare annotation [2018-11-18 23:09:50,650 WARN L170 areAnnotationChecker]: L18 has no Hoare annotation [2018-11-18 23:09:50,650 WARN L170 areAnnotationChecker]: L13-2 has no Hoare annotation [2018-11-18 23:09:50,651 WARN L170 areAnnotationChecker]: L5-1 has no Hoare annotation [2018-11-18 23:09:50,651 WARN L170 areAnnotationChecker]: L5-1 has no Hoare annotation [2018-11-18 23:09:50,651 WARN L170 areAnnotationChecker]: L5-3 has no Hoare annotation [2018-11-18 23:09:50,651 WARN L170 areAnnotationChecker]: mainFINAL has no Hoare annotation [2018-11-18 23:09:50,651 WARN L170 areAnnotationChecker]: L21-4 has no Hoare annotation [2018-11-18 23:09:50,651 WARN L170 areAnnotationChecker]: L21-4 has no Hoare annotation [2018-11-18 23:09:50,651 WARN L170 areAnnotationChecker]: __VERIFIER_assertEXIT has no Hoare annotation [2018-11-18 23:09:50,652 WARN L170 areAnnotationChecker]: mainEXIT has no Hoare annotation [2018-11-18 23:09:50,652 WARN L170 areAnnotationChecker]: L21-1 has no Hoare annotation [2018-11-18 23:09:50,652 WARN L170 areAnnotationChecker]: L21-1 has no Hoare annotation [2018-11-18 23:09:50,652 WARN L170 areAnnotationChecker]: L21-5 has no Hoare annotation [2018-11-18 23:09:50,652 WARN L170 areAnnotationChecker]: L35-1 has no Hoare annotation [2018-11-18 23:09:50,652 WARN L170 areAnnotationChecker]: L23 has no Hoare annotation [2018-11-18 23:09:50,652 WARN L170 areAnnotationChecker]: L23 has no Hoare annotation [2018-11-18 23:09:50,652 WARN L170 areAnnotationChecker]: L33-4 has no Hoare annotation [2018-11-18 23:09:50,653 WARN L170 areAnnotationChecker]: L33-4 has no Hoare annotation [2018-11-18 23:09:50,653 WARN L170 areAnnotationChecker]: L33-3 has no Hoare annotation [2018-11-18 23:09:50,653 WARN L170 areAnnotationChecker]: L23-2 has no Hoare annotation [2018-11-18 23:09:50,653 WARN L170 areAnnotationChecker]: L33-1 has no Hoare annotation [2018-11-18 23:09:50,653 WARN L170 areAnnotationChecker]: L33-1 has no Hoare annotation [2018-11-18 23:09:50,653 WARN L170 areAnnotationChecker]: L33-5 has no Hoare annotation [2018-11-18 23:09:50,653 WARN L170 areAnnotationChecker]: L27 has no Hoare annotation [2018-11-18 23:09:50,654 WARN L170 areAnnotationChecker]: L27 has no Hoare annotation [2018-11-18 23:09:50,654 WARN L170 areAnnotationChecker]: L35 has no Hoare annotation [2018-11-18 23:09:50,654 WARN L170 areAnnotationChecker]: L35 has no Hoare annotation [2018-11-18 23:09:50,654 WARN L170 areAnnotationChecker]: L21-3 has no Hoare annotation [2018-11-18 23:09:50,654 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 23:09:50,657 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 11:09:50 BoogieIcfgContainer [2018-11-18 23:09:50,657 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 23:09:50,659 INFO L168 Benchmark]: Toolchain (without parser) took 7414.45 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 719.8 MB). Free memory was 1.4 GB in the beginning and 1.8 GB in the end (delta: -338.9 MB). Peak memory consumption was 381.0 MB. Max. memory is 7.1 GB. [2018-11-18 23:09:50,661 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-18 23:09:50,661 INFO L168 Benchmark]: CACSL2BoogieTranslator took 362.80 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 23:09:50,662 INFO L168 Benchmark]: Boogie Preprocessor took 55.02 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 23:09:50,663 INFO L168 Benchmark]: RCFGBuilder took 774.07 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 719.8 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -757.8 MB). Peak memory consumption was 28.9 MB. Max. memory is 7.1 GB. [2018-11-18 23:09:50,664 INFO L168 Benchmark]: TraceAbstraction took 6217.73 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.8 GB in the end (delta: 408.3 MB). Peak memory consumption was 408.3 MB. Max. memory is 7.1 GB. [2018-11-18 23:09:50,668 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 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 362.80 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 55.02 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 774.07 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 719.8 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -757.8 MB). Peak memory consumption was 28.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 6217.73 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.8 GB in the end (delta: 408.3 MB). Peak memory consumption was 408.3 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: [L8] int SIZE; VAL [\old(SIZE)=10, SIZE=0] [L12] SIZE = __VERIFIER_nondet_int() [L13] COND TRUE SIZE > 1 [L15] int i; [L16] FCALL int a[SIZE]; VAL [\old(SIZE)=0, a={11:0}, SIZE=2] [L18] COND FALSE !(SIZE % 2 != 0) [L21] i = 1 VAL [\old(SIZE)=0, a={11:0}, i=1, SIZE=2] [L21] COND TRUE i <= SIZE/2 [L23] EXPR, FCALL a[2*i-2] VAL [\old(SIZE)=0, a={11:0}, a[2*i-2]=1, i=1, SIZE=2] [L23] COND FALSE !(a[2*i-2] > i) [L27] EXPR, FCALL a[2*i-1] VAL [\old(SIZE)=0, a={11:0}, a[2*i-1]=0, i=1, SIZE=2] [L27] COND FALSE !(a[2*i-1] > i) [L21] i++ VAL [\old(SIZE)=0, a={11:0}, i=2, SIZE=2] [L21] COND FALSE !(i <= SIZE/2) VAL [\old(SIZE)=0, a={11:0}, i=2, SIZE=2] [L33] i = 0 VAL [\old(SIZE)=0, a={11:0}, i=0, SIZE=2] [L33] COND TRUE i < SIZE [L35] EXPR, FCALL a[i] VAL [\old(SIZE)=0, a={11:0}, a[i]=1, i=0, SIZE=2] [L35] CALL __VERIFIER_assert( a[i] <= i ) VAL [\old(cond)=0, \old(SIZE)=0, SIZE=2] [L5] COND TRUE !(cond) VAL [\old(cond)=0, \old(SIZE)=0, cond=0, SIZE=2] [L5] __VERIFIER_error() VAL [\old(cond)=0, \old(SIZE)=0, cond=0, SIZE=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 32 locations, 1 error locations. UNSAFE Result, 6.1s OverallTime, 4 OverallIterations, 2 TraceHistogramMax, 3.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 80 SDtfs, 140 SDslu, 128 SDs, 0 SdLazy, 191 SolverSat, 46 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 47 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=43occurred in iteration=3, 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: 0.1s AutomataMinimizationTime, 3 MinimizatonAttempts, 27 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 102 NumberOfCodeBlocks, 102 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 75 ConstructedInterpolants, 0 QuantifiedInterpolants, 9949 SizeOfPredicates, 7 NumberOfNonLiveVariables, 82 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 0/4 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...