java -ea -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/ldv-regression/test13_true-unreach-call_true-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-18e5b2d-m [2018-11-18 21:50:40,056 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 21:50:40,058 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 21:50:40,070 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 21:50:40,070 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 21:50:40,072 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 21:50:40,073 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 21:50:40,075 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 21:50:40,077 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 21:50:40,078 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 21:50:40,079 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 21:50:40,079 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 21:50:40,080 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 21:50:40,081 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 21:50:40,082 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 21:50:40,083 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 21:50:40,084 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 21:50:40,086 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 21:50:40,088 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 21:50:40,090 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 21:50:40,091 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 21:50:40,092 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 21:50:40,099 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 21:50:40,100 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 21:50:40,100 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 21:50:40,101 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 21:50:40,107 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 21:50:40,108 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 21:50:40,109 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 21:50:40,112 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 21:50:40,112 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 21:50:40,113 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 21:50:40,113 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 21:50:40,113 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 21:50:40,116 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 21:50:40,116 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 21:50:40,117 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-11-18 21:50:40,147 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 21:50:40,147 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 21:50:40,148 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 21:50:40,148 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-18 21:50:40,149 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-18 21:50:40,149 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-18 21:50:40,149 INFO L133 SettingsManager]: * Use SBE=true [2018-11-18 21:50:40,149 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 21:50:40,151 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 21:50:40,151 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 21:50:40,151 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 21:50:40,151 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 21:50:40,152 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 21:50:40,152 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 21:50:40,152 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-11-18 21:50:40,152 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-11-18 21:50:40,152 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 21:50:40,152 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 21:50:40,154 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 21:50:40,154 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 21:50:40,154 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 21:50:40,154 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 21:50:40,154 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 21:50:40,155 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 21:50:40,155 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 21:50:40,155 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 21:50:40,155 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 21:50:40,155 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 21:50:40,156 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-11-18 21:50:40,156 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 21:50:40,156 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-11-18 21:50:40,156 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-11-18 21:50:40,156 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-18 21:50:40,203 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 21:50:40,216 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 21:50:40,220 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 21:50:40,222 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 21:50:40,222 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 21:50:40,223 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test13_true-unreach-call_true-termination.c [2018-11-18 21:50:40,290 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/78ee42a9c/12e4396f08e245b0bd3d13af4bfc0185/FLAG3d72896b8 [2018-11-18 21:50:40,799 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 21:50:40,800 INFO L161 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test13_true-unreach-call_true-termination.c [2018-11-18 21:50:40,805 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/78ee42a9c/12e4396f08e245b0bd3d13af4bfc0185/FLAG3d72896b8 [2018-11-18 21:50:41,136 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/78ee42a9c/12e4396f08e245b0bd3d13af4bfc0185 [2018-11-18 21:50:41,145 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 21:50:41,147 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-11-18 21:50:41,148 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 21:50:41,148 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 21:50:41,152 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 21:50:41,154 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:50:41" (1/1) ... [2018-11-18 21:50:41,157 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@595e579a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:50:41, skipping insertion in model container [2018-11-18 21:50:41,157 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:50:41" (1/1) ... [2018-11-18 21:50:41,167 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 21:50:41,189 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 21:50:41,388 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 21:50:41,397 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 21:50:41,413 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 21:50:41,447 INFO L195 MainTranslator]: Completed translation [2018-11-18 21:50:41,447 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:50:41 WrapperNode [2018-11-18 21:50:41,447 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 21:50:41,448 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 21:50:41,448 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 21:50:41,449 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 21:50:41,465 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:50:41" (1/1) ... [2018-11-18 21:50:41,466 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:50:41" (1/1) ... [2018-11-18 21:50:41,475 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:50:41" (1/1) ... [2018-11-18 21:50:41,476 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:50:41" (1/1) ... [2018-11-18 21:50:41,487 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:50:41" (1/1) ... [2018-11-18 21:50:41,492 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:50:41" (1/1) ... [2018-11-18 21:50:41,493 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:50:41" (1/1) ... [2018-11-18 21:50:41,496 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 21:50:41,496 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 21:50:41,497 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 21:50:41,497 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 21:50:41,498 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:50:41" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 21:50:41,618 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 21:50:41,619 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 21:50:41,619 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2018-11-18 21:50:41,619 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 21:50:41,619 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-18 21:50:41,619 INFO L130 BoogieDeclarations]: Found specification of procedure check [2018-11-18 21:50:41,620 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 21:50:41,620 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 21:50:41,620 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-18 21:50:41,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2018-11-18 21:50:41,620 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 21:50:41,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-11-18 21:50:41,621 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-11-18 21:50:41,621 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-18 21:50:42,032 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 21:50:42,033 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:50:42 BoogieIcfgContainer [2018-11-18 21:50:42,033 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 21:50:42,034 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 21:50:42,034 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 21:50:42,038 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 21:50:42,038 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 09:50:41" (1/3) ... [2018-11-18 21:50:42,039 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61ba1252 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:50:42, skipping insertion in model container [2018-11-18 21:50:42,039 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:50:41" (2/3) ... [2018-11-18 21:50:42,040 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61ba1252 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:50:42, skipping insertion in model container [2018-11-18 21:50:42,040 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:50:42" (3/3) ... [2018-11-18 21:50:42,042 INFO L112 eAbstractionObserver]: Analyzing ICFG test13_true-unreach-call_true-termination.c [2018-11-18 21:50:42,050 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 21:50:42,059 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 21:50:42,073 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 21:50:42,103 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 21:50:42,104 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 21:50:42,104 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 21:50:42,104 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 21:50:42,104 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 21:50:42,105 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 21:50:42,105 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 21:50:42,105 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 21:50:42,105 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 21:50:42,123 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2018-11-18 21:50:42,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-11-18 21:50:42,129 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 21:50:42,130 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 21:50:42,132 INFO L423 AbstractCegarLoop]: === Iteration 1 === [checkErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 21:50:42,139 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 21:50:42,139 INFO L82 PathProgramCache]: Analyzing trace with hash 562540648, now seen corresponding path program 1 times [2018-11-18 21:50:42,144 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 21:50:42,145 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 2 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-18 21:50:42,164 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 21:50:42,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 21:50:42,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 21:50:42,264 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 21:50:42,760 INFO L256 TraceCheckUtils]: 0: Hoare triple {20#true} call ULTIMATE.init(); {20#true} is VALID [2018-11-18 21:50:42,779 INFO L273 TraceCheckUtils]: 1: Hoare triple {20#true} call ~#a~0.base, ~#a~0.offset := #Ultimate.alloc(4bv32);call write~unchecked~intINTTYPE4(0bv32, ~#a~0.base, ~#a~0.offset, 4bv32);call write~unchecked~intINTTYPE4(0bv32, ~#a~0.base, ~#a~0.offset, 4bv32);call ~#b~0.base, ~#b~0.offset := #Ultimate.alloc(4bv32);call write~unchecked~intINTTYPE4(0bv32, ~#b~0.base, ~#b~0.offset, 4bv32);call write~unchecked~intINTTYPE4(0bv32, ~#b~0.base, ~#b~0.offset, 4bv32);~pa~0.base, ~pa~0.offset := ~#a~0.base, ~#a~0.offset;~pb~0.base, ~pb~0.offset := ~#b~0.base, ~#b~0.offset; {28#(and (= ~pa~0.offset |~#a~0.offset|) (= ~pa~0.base |~#a~0.base|))} is VALID [2018-11-18 21:50:42,787 INFO L273 TraceCheckUtils]: 2: Hoare triple {28#(and (= ~pa~0.offset |~#a~0.offset|) (= ~pa~0.base |~#a~0.base|))} assume true; {28#(and (= ~pa~0.offset |~#a~0.offset|) (= ~pa~0.base |~#a~0.base|))} is VALID [2018-11-18 21:50:42,792 INFO L268 TraceCheckUtils]: 3: Hoare quadruple {28#(and (= ~pa~0.offset |~#a~0.offset|) (= ~pa~0.base |~#a~0.base|))} {20#true} #18#return; {28#(and (= ~pa~0.offset |~#a~0.offset|) (= ~pa~0.base |~#a~0.base|))} is VALID [2018-11-18 21:50:42,793 INFO L256 TraceCheckUtils]: 4: Hoare triple {28#(and (= ~pa~0.offset |~#a~0.offset|) (= ~pa~0.base |~#a~0.base|))} call #t~ret0 := main(); {28#(and (= ~pa~0.offset |~#a~0.offset|) (= ~pa~0.base |~#a~0.base|))} is VALID [2018-11-18 21:50:42,797 INFO L256 TraceCheckUtils]: 5: Hoare triple {28#(and (= ~pa~0.offset |~#a~0.offset|) (= ~pa~0.base |~#a~0.base|))} call check(~pa~0.base, ~pa~0.offset, ~#a~0.base, ~#a~0.offset); {41#(and (= |check_#in~b.base| |check_#in~a.base|) (= |check_#in~b.offset| |check_#in~a.offset|))} is VALID [2018-11-18 21:50:42,806 INFO L273 TraceCheckUtils]: 6: Hoare triple {41#(and (= |check_#in~b.base| |check_#in~a.base|) (= |check_#in~b.offset| |check_#in~a.offset|))} ~a.base, ~a.offset := #in~a.base, #in~a.offset;~b.base, ~b.offset := #in~b.base, #in~b.offset; {45#(and (= check_~a.offset check_~b.offset) (= check_~b.base check_~a.base))} is VALID [2018-11-18 21:50:42,809 INFO L273 TraceCheckUtils]: 7: Hoare triple {45#(and (= check_~a.offset check_~b.offset) (= check_~b.base check_~a.base))} assume ~a.base != ~b.base || ~a.offset != ~b.offset; {21#false} is VALID [2018-11-18 21:50:42,809 INFO L273 TraceCheckUtils]: 8: Hoare triple {21#false} assume !false; {21#false} is VALID [2018-11-18 21:50:42,812 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 21:50:42,813 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 21:50:42,819 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 21:50:42,819 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-18 21:50:42,824 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2018-11-18 21:50:42,828 INFO L84 Accepts]: Finished accepts. word is accepted. [2018-11-18 21:50:42,831 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 5 states. [2018-11-18 21:50:42,871 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 9 edges. 9 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2018-11-18 21:50:42,872 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-18 21:50:42,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-18 21:50:42,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-18 21:50:42,884 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 5 states. [2018-11-18 21:50:43,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 21:50:43,436 INFO L93 Difference]: Finished difference Result 24 states and 23 transitions. [2018-11-18 21:50:43,437 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-18 21:50:43,437 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2018-11-18 21:50:43,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 21:50:43,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-11-18 21:50:43,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 23 transitions. [2018-11-18 21:50:43,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-11-18 21:50:43,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 23 transitions. [2018-11-18 21:50:43,464 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 5 states and 23 transitions. [2018-11-18 21:50:43,515 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 23 edges. 23 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2018-11-18 21:50:43,522 INFO L225 Difference]: With dead ends: 24 [2018-11-18 21:50:43,522 INFO L226 Difference]: Without dead ends: 0 [2018-11-18 21:50:43,526 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-11-18 21:50:43,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-18 21:50:43,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-18 21:50:43,552 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2018-11-18 21:50:43,553 INFO L82 GeneralOperation]: Start isEquivalent. First operand 0 states. Second operand 0 states. [2018-11-18 21:50:43,554 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand 0 states. [2018-11-18 21:50:43,554 INFO L87 Difference]: Start difference. First operand 0 states. Second operand 0 states. [2018-11-18 21:50:43,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 21:50:43,555 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2018-11-18 21:50:43,555 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-18 21:50:43,556 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-18 21:50:43,556 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2018-11-18 21:50:43,556 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand 0 states. [2018-11-18 21:50:43,556 INFO L87 Difference]: Start difference. First operand 0 states. Second operand 0 states. [2018-11-18 21:50:43,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 21:50:43,557 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2018-11-18 21:50:43,557 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-18 21:50:43,557 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-18 21:50:43,558 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2018-11-18 21:50:43,558 INFO L88 GeneralOperation]: Finished isEquivalent. [2018-11-18 21:50:43,558 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2018-11-18 21:50:43,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-18 21:50:43,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-18 21:50:43,560 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 9 [2018-11-18 21:50:43,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 21:50:43,561 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 21:50:43,561 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-18 21:50:43,561 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-18 21:50:43,561 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-18 21:50:43,567 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-18 21:50:44,004 WARN L180 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-11-18 21:50:44,067 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-11-18 21:50:44,067 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-11-18 21:50:44,068 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-18 21:50:44,068 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-18 21:50:44,068 INFO L421 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: (and (= ~pa~0.offset |~#a~0.offset|) (= ~pa~0.base |~#a~0.base|)) [2018-11-18 21:50:44,068 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-18 21:50:44,068 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-18 21:50:44,068 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 17 20) the Hoare annotation is: true [2018-11-18 21:50:44,069 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 17 20) no Hoare annotation was computed. [2018-11-18 21:50:44,069 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 17 20) no Hoare annotation was computed. [2018-11-18 21:50:44,069 INFO L425 ceAbstractionStarter]: For program point L18(line 18) no Hoare annotation was computed. [2018-11-18 21:50:44,069 INFO L428 ceAbstractionStarter]: At program point checkENTRY(lines 4 12) the Hoare annotation is: true [2018-11-18 21:50:44,069 INFO L425 ceAbstractionStarter]: For program point checkErr0ASSERT_VIOLATIONERROR_FUNCTION(line 10) no Hoare annotation was computed. [2018-11-18 21:50:44,070 INFO L425 ceAbstractionStarter]: For program point checkFINAL(lines 4 12) no Hoare annotation was computed. [2018-11-18 21:50:44,070 INFO L421 ceAbstractionStarter]: At program point L6(lines 4 12) the Hoare annotation is: (or (not (= |check_#in~b.base| |check_#in~a.base|)) (not (= |~#a~0.base| ~pa~0.base)) (not (= |~#a~0.offset| ~pa~0.offset)) (not (= |check_#in~b.offset| |check_#in~a.offset|))) [2018-11-18 21:50:44,070 INFO L425 ceAbstractionStarter]: For program point L5(lines 5 7) no Hoare annotation was computed. [2018-11-18 21:50:44,070 INFO L425 ceAbstractionStarter]: For program point checkEXIT(lines 4 12) no Hoare annotation was computed. [2018-11-18 21:50:44,072 WARN L170 areAnnotationChecker]: ULTIMATE.initFINAL has no Hoare annotation [2018-11-18 21:50:44,072 WARN L170 areAnnotationChecker]: L18 has no Hoare annotation [2018-11-18 21:50:44,073 WARN L170 areAnnotationChecker]: L5 has no Hoare annotation [2018-11-18 21:50:44,073 WARN L170 areAnnotationChecker]: ULTIMATE.initFINAL has no Hoare annotation [2018-11-18 21:50:44,073 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2018-11-18 21:50:44,073 WARN L170 areAnnotationChecker]: L18 has no Hoare annotation [2018-11-18 21:50:44,073 WARN L170 areAnnotationChecker]: L5 has no Hoare annotation [2018-11-18 21:50:44,074 WARN L170 areAnnotationChecker]: L5 has no Hoare annotation [2018-11-18 21:50:44,074 WARN L170 areAnnotationChecker]: ULTIMATE.initEXIT has no Hoare annotation [2018-11-18 21:50:44,074 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2018-11-18 21:50:44,074 WARN L170 areAnnotationChecker]: mainFINAL has no Hoare annotation [2018-11-18 21:50:44,074 WARN L170 areAnnotationChecker]: checkErr0ASSERT_VIOLATIONERROR_FUNCTION has no Hoare annotation [2018-11-18 21:50:44,074 WARN L170 areAnnotationChecker]: checkFINAL has no Hoare annotation [2018-11-18 21:50:44,075 WARN L170 areAnnotationChecker]: checkFINAL has no Hoare annotation [2018-11-18 21:50:44,075 WARN L170 areAnnotationChecker]: mainEXIT has no Hoare annotation [2018-11-18 21:50:44,075 WARN L170 areAnnotationChecker]: checkEXIT has no Hoare annotation [2018-11-18 21:50:44,075 INFO L163 areAnnotationChecker]: CFG has 3 edges. 3 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2018-11-18 21:50:44,086 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 09:50:44 BoogieIcfgContainer [2018-11-18 21:50:44,086 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 21:50:44,087 INFO L168 Benchmark]: Toolchain (without parser) took 2941.50 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 735.1 MB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -686.8 MB). Peak memory consumption was 48.3 MB. Max. memory is 7.1 GB. [2018-11-18 21:50:44,089 INFO L168 Benchmark]: CDTParser took 0.22 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 21:50:44,090 INFO L168 Benchmark]: CACSL2BoogieTranslator took 300.01 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 21:50:44,091 INFO L168 Benchmark]: Boogie Preprocessor took 47.70 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 21:50:44,092 INFO L168 Benchmark]: RCFGBuilder took 536.91 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 735.1 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -785.6 MB). Peak memory consumption was 26.4 MB. Max. memory is 7.1 GB. [2018-11-18 21:50:44,093 INFO L168 Benchmark]: TraceAbstraction took 2052.11 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 88.2 MB). Peak memory consumption was 88.2 MB. Max. memory is 7.1 GB. [2018-11-18 21:50:44,098 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 0.22 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 300.01 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 47.70 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 536.91 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 735.1 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -785.6 MB). Peak memory consumption was 26.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2052.11 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 88.2 MB). Peak memory consumption was 88.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 10]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 4]: Loop Invariant Derived loop invariant: ((!(b == a) || !(a == pa)) || !(a == pa)) || !(b == a) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 17 locations, 1 error locations. SAFE Result, 1.9s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.5s HoareAnnotationTime, HoareTripleCheckerStatistics: 11 SDtfs, 13 SDslu, 20 SDs, 0 SdLazy, 5 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred 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: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 6 PreInvPairs, 6 NumberOfFragments, 28 HoareAnnotationTreeSize, 6 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 6 FomulaSimplificationsInter, 44 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 9 NumberOfCodeBlocks, 9 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 352 SizeOfPredicates, 12 NumberOfNonLiveVariables, 55 ConjunctsInSsa, 11 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 correct! Received shutdown request...