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/test20_true-unreach-call_true-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-370d6ab [2018-11-14 16:24:45,072 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-14 16:24:45,074 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-14 16:24:45,090 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-14 16:24:45,090 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-14 16:24:45,093 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-14 16:24:45,094 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-14 16:24:45,097 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-14 16:24:45,099 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-14 16:24:45,106 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-14 16:24:45,110 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-14 16:24:45,110 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-14 16:24:45,111 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-14 16:24:45,116 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-14 16:24:45,117 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-14 16:24:45,118 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-14 16:24:45,119 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-14 16:24:45,124 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-14 16:24:45,127 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-14 16:24:45,132 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-14 16:24:45,133 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-14 16:24:45,136 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-14 16:24:45,143 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-14 16:24:45,143 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-14 16:24:45,143 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-14 16:24:45,144 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-14 16:24:45,146 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-14 16:24:45,148 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-14 16:24:45,148 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-14 16:24:45,149 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-14 16:24:45,152 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-14 16:24:45,153 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-14 16:24:45,153 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-14 16:24:45,153 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-14 16:24:45,154 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-14 16:24:45,156 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-14 16:24:45,157 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-11-14 16:24:45,184 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-14 16:24:45,184 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-14 16:24:45,186 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-14 16:24:45,186 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-14 16:24:45,187 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-14 16:24:45,187 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-14 16:24:45,187 INFO L133 SettingsManager]: * Use SBE=true [2018-11-14 16:24:45,187 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-14 16:24:45,189 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-14 16:24:45,189 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-14 16:24:45,189 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-14 16:24:45,189 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-14 16:24:45,190 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-14 16:24:45,190 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-14 16:24:45,190 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-11-14 16:24:45,191 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-11-14 16:24:45,192 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-14 16:24:45,192 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-14 16:24:45,192 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-14 16:24:45,193 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-14 16:24:45,193 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-14 16:24:45,193 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-14 16:24:45,193 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-14 16:24:45,193 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-14 16:24:45,194 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-14 16:24:45,194 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-14 16:24:45,195 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-14 16:24:45,195 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-11-14 16:24:45,195 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-14 16:24:45,195 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-11-14 16:24:45,195 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-11-14 16:24:45,196 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-14 16:24:45,260 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-14 16:24:45,275 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-14 16:24:45,280 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-14 16:24:45,282 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-14 16:24:45,282 INFO L276 PluginConnector]: CDTParser initialized [2018-11-14 16:24:45,283 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test20_true-unreach-call_true-termination.c [2018-11-14 16:24:45,356 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd778eedc/88e8e846f6b44b748065728b8c492e12/FLAG12163b01a [2018-11-14 16:24:45,863 INFO L298 CDTParser]: Found 1 translation units. [2018-11-14 16:24:45,864 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test20_true-unreach-call_true-termination.c [2018-11-14 16:24:45,870 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd778eedc/88e8e846f6b44b748065728b8c492e12/FLAG12163b01a [2018-11-14 16:24:45,886 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd778eedc/88e8e846f6b44b748065728b8c492e12 [2018-11-14 16:24:45,899 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-14 16:24:45,901 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-11-14 16:24:45,902 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-14 16:24:45,902 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-14 16:24:45,907 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-14 16:24:45,908 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 04:24:45" (1/1) ... [2018-11-14 16:24:45,911 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36be1352 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:24:45, skipping insertion in model container [2018-11-14 16:24:45,912 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 04:24:45" (1/1) ... [2018-11-14 16:24:45,922 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-14 16:24:45,944 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-14 16:24:46,170 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-14 16:24:46,179 INFO L191 MainTranslator]: Completed pre-run [2018-11-14 16:24:46,194 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-14 16:24:46,225 INFO L195 MainTranslator]: Completed translation [2018-11-14 16:24:46,225 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:24:46 WrapperNode [2018-11-14 16:24:46,226 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-14 16:24:46,226 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-14 16:24:46,228 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-14 16:24:46,228 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-14 16:24:46,244 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:24:46" (1/1) ... [2018-11-14 16:24:46,244 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:24:46" (1/1) ... [2018-11-14 16:24:46,254 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:24:46" (1/1) ... [2018-11-14 16:24:46,255 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:24:46" (1/1) ... [2018-11-14 16:24:46,262 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:24:46" (1/1) ... [2018-11-14 16:24:46,264 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:24:46" (1/1) ... [2018-11-14 16:24:46,266 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:24:46" (1/1) ... [2018-11-14 16:24:46,268 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-14 16:24:46,268 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-14 16:24:46,269 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-14 16:24:46,269 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-14 16:24:46,270 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:24:46" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-14 16:24:46,404 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-14 16:24:46,405 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-14 16:24:46,405 INFO L138 BoogieDeclarations]: Found implementation of procedure equal [2018-11-14 16:24:46,405 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-14 16:24:46,405 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-14 16:24:46,405 INFO L130 BoogieDeclarations]: Found specification of procedure equal [2018-11-14 16:24:46,406 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-14 16:24:46,406 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-14 16:24:46,406 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-14 16:24:46,406 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2018-11-14 16:24:46,406 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-14 16:24:46,406 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-11-14 16:24:46,407 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-11-14 16:24:46,407 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-14 16:24:46,793 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-14 16:24:46,794 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 04:24:46 BoogieIcfgContainer [2018-11-14 16:24:46,794 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-14 16:24:46,796 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-14 16:24:46,796 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-14 16:24:46,800 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-14 16:24:46,800 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 04:24:45" (1/3) ... [2018-11-14 16:24:46,801 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44f024cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 04:24:46, skipping insertion in model container [2018-11-14 16:24:46,801 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:24:46" (2/3) ... [2018-11-14 16:24:46,801 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44f024cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 04:24:46, skipping insertion in model container [2018-11-14 16:24:46,802 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 04:24:46" (3/3) ... [2018-11-14 16:24:46,804 INFO L112 eAbstractionObserver]: Analyzing ICFG test20_true-unreach-call_true-termination.c [2018-11-14 16:24:46,813 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-14 16:24:46,823 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-14 16:24:46,839 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-14 16:24:46,870 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-14 16:24:46,870 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-14 16:24:46,870 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-14 16:24:46,871 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-14 16:24:46,871 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-14 16:24:46,871 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-14 16:24:46,871 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-14 16:24:46,871 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-14 16:24:46,871 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-14 16:24:46,888 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2018-11-14 16:24:46,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-11-14 16:24:46,894 INFO L367 BasicCegarLoop]: Found error trace [2018-11-14 16:24:46,895 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-14 16:24:46,897 INFO L423 AbstractCegarLoop]: === Iteration 1 === [equalErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-14 16:24:46,903 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-14 16:24:46,903 INFO L82 PathProgramCache]: Analyzing trace with hash -1534444928, now seen corresponding path program 1 times [2018-11-14 16:24:46,907 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-14 16:24:46,907 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 2 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-14 16:24:46,931 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-14 16:24:46,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-14 16:24:47,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-14 16:24:47,012 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-14 16:24:47,181 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2018-11-14 16:24:47,184 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-14 16:24:47,188 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-14 16:24:47,189 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:8, output treesize:4 [2018-11-14 16:24:47,499 INFO L256 TraceCheckUtils]: 0: Hoare triple {20#true} call ULTIMATE.init(); {20#true} is VALID [2018-11-14 16:24:47,518 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 ~#b~0.base, ~#b~0.offset := #Ultimate.alloc(4bv32);call write~unchecked~intINTTYPE4(0bv32, ~#b~0.base, ~#b~0.offset, 4bv32); {28#(not (= |~#b~0.base| |~#a~0.base|))} is VALID [2018-11-14 16:24:47,531 INFO L273 TraceCheckUtils]: 2: Hoare triple {28#(not (= |~#b~0.base| |~#a~0.base|))} assume true; {28#(not (= |~#b~0.base| |~#a~0.base|))} is VALID [2018-11-14 16:24:47,545 INFO L268 TraceCheckUtils]: 3: Hoare quadruple {28#(not (= |~#b~0.base| |~#a~0.base|))} {20#true} #18#return; {28#(not (= |~#b~0.base| |~#a~0.base|))} is VALID [2018-11-14 16:24:47,558 INFO L256 TraceCheckUtils]: 4: Hoare triple {28#(not (= |~#b~0.base| |~#a~0.base|))} call #t~ret0 := main(); {28#(not (= |~#b~0.base| |~#a~0.base|))} is VALID [2018-11-14 16:24:47,572 INFO L256 TraceCheckUtils]: 5: Hoare triple {28#(not (= |~#b~0.base| |~#a~0.base|))} call equal(~#a~0.base, ~#a~0.offset, ~#b~0.base, ~#b~0.offset); {41#(not (= |equal_#in~a.base| |equal_#in~b.base|))} is VALID [2018-11-14 16:24:47,586 INFO L273 TraceCheckUtils]: 6: Hoare triple {41#(not (= |equal_#in~a.base| |equal_#in~b.base|))} ~a.base, ~a.offset := #in~a.base, #in~a.offset;~b.base, ~b.offset := #in~b.base, #in~b.offset; {45#(not (= equal_~a.base equal_~b.base))} is VALID [2018-11-14 16:24:47,599 INFO L273 TraceCheckUtils]: 7: Hoare triple {45#(not (= equal_~a.base equal_~b.base))} assume ~a.base == ~b.base && ~a.offset == ~b.offset; {21#false} is VALID [2018-11-14 16:24:47,600 INFO L273 TraceCheckUtils]: 8: Hoare triple {21#false} assume !false; {21#false} is VALID [2018-11-14 16:24:47,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-14 16:24:47,602 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-14 16:24:47,608 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-14 16:24:47,608 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-14 16:24:47,614 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2018-11-14 16:24:47,618 INFO L84 Accepts]: Finished accepts. word is accepted. [2018-11-14 16:24:47,622 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 5 states. [2018-11-14 16:24:47,735 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 9 edges. 9 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2018-11-14 16:24:47,735 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-14 16:24:47,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-14 16:24:47,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-14 16:24:47,748 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 5 states. [2018-11-14 16:24:48,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-14 16:24:48,097 INFO L93 Difference]: Finished difference Result 24 states and 23 transitions. [2018-11-14 16:24:48,097 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-14 16:24:48,097 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2018-11-14 16:24:48,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-14 16:24:48,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-11-14 16:24:48,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 23 transitions. [2018-11-14 16:24:48,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-11-14 16:24:48,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 23 transitions. [2018-11-14 16:24:48,117 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 5 states and 23 transitions. [2018-11-14 16:24:48,181 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 23 edges. 23 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2018-11-14 16:24:48,188 INFO L225 Difference]: With dead ends: 24 [2018-11-14 16:24:48,189 INFO L226 Difference]: Without dead ends: 0 [2018-11-14 16:24:48,194 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-11-14 16:24:48,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-14 16:24:48,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-14 16:24:48,225 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2018-11-14 16:24:48,226 INFO L82 GeneralOperation]: Start isEquivalent. First operand 0 states. Second operand 0 states. [2018-11-14 16:24:48,226 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand 0 states. [2018-11-14 16:24:48,227 INFO L87 Difference]: Start difference. First operand 0 states. Second operand 0 states. [2018-11-14 16:24:48,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-14 16:24:48,227 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2018-11-14 16:24:48,228 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-14 16:24:48,228 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-14 16:24:48,228 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2018-11-14 16:24:48,228 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand 0 states. [2018-11-14 16:24:48,229 INFO L87 Difference]: Start difference. First operand 0 states. Second operand 0 states. [2018-11-14 16:24:48,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-14 16:24:48,229 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2018-11-14 16:24:48,229 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-14 16:24:48,230 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-14 16:24:48,230 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2018-11-14 16:24:48,230 INFO L88 GeneralOperation]: Finished isEquivalent. [2018-11-14 16:24:48,230 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2018-11-14 16:24:48,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-14 16:24:48,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-14 16:24:48,233 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 9 [2018-11-14 16:24:48,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-14 16:24:48,233 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-14 16:24:48,233 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-14 16:24:48,234 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-14 16:24:48,234 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-14 16:24:48,239 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-14 16:24:48,475 INFO L425 ceAbstractionStarter]: For program point equalErr0ASSERT_VIOLATIONERROR_FUNCTION(line 10) no Hoare annotation was computed. [2018-11-14 16:24:48,475 INFO L425 ceAbstractionStarter]: For program point equalEXIT(lines 4 12) no Hoare annotation was computed. [2018-11-14 16:24:48,476 INFO L428 ceAbstractionStarter]: At program point equalENTRY(lines 4 12) the Hoare annotation is: true [2018-11-14 16:24:48,476 INFO L425 ceAbstractionStarter]: For program point equalFINAL(lines 4 12) no Hoare annotation was computed. [2018-11-14 16:24:48,476 INFO L421 ceAbstractionStarter]: At program point L6(lines 4 12) the Hoare annotation is: (or (= |equal_#in~a.base| |equal_#in~b.base|) (= |~#a~0.base| |~#b~0.base|)) [2018-11-14 16:24:48,476 INFO L425 ceAbstractionStarter]: For program point L5(lines 5 7) no Hoare annotation was computed. [2018-11-14 16:24:48,476 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-11-14 16:24:48,476 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-11-14 16:24:48,477 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-14 16:24:48,477 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-14 16:24:48,477 INFO L421 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: (not (= |~#b~0.base| |~#a~0.base|)) [2018-11-14 16:24:48,477 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-14 16:24:48,477 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-14 16:24:48,477 INFO L425 ceAbstractionStarter]: For program point L17(line 17) no Hoare annotation was computed. [2018-11-14 16:24:48,478 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 16 19) the Hoare annotation is: true [2018-11-14 16:24:48,478 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 16 19) no Hoare annotation was computed. [2018-11-14 16:24:48,478 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 16 19) no Hoare annotation was computed. [2018-11-14 16:24:48,480 WARN L170 areAnnotationChecker]: L5 has no Hoare annotation [2018-11-14 16:24:48,480 WARN L170 areAnnotationChecker]: ULTIMATE.initFINAL has no Hoare annotation [2018-11-14 16:24:48,480 WARN L170 areAnnotationChecker]: L17 has no Hoare annotation [2018-11-14 16:24:48,480 WARN L170 areAnnotationChecker]: L5 has no Hoare annotation [2018-11-14 16:24:48,481 WARN L170 areAnnotationChecker]: L5 has no Hoare annotation [2018-11-14 16:24:48,481 WARN L170 areAnnotationChecker]: ULTIMATE.initFINAL has no Hoare annotation [2018-11-14 16:24:48,481 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2018-11-14 16:24:48,481 WARN L170 areAnnotationChecker]: L17 has no Hoare annotation [2018-11-14 16:24:48,481 WARN L170 areAnnotationChecker]: equalErr0ASSERT_VIOLATIONERROR_FUNCTION has no Hoare annotation [2018-11-14 16:24:48,481 WARN L170 areAnnotationChecker]: equalFINAL has no Hoare annotation [2018-11-14 16:24:48,482 WARN L170 areAnnotationChecker]: equalFINAL has no Hoare annotation [2018-11-14 16:24:48,482 WARN L170 areAnnotationChecker]: ULTIMATE.initEXIT has no Hoare annotation [2018-11-14 16:24:48,482 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2018-11-14 16:24:48,482 WARN L170 areAnnotationChecker]: mainFINAL has no Hoare annotation [2018-11-14 16:24:48,482 WARN L170 areAnnotationChecker]: equalEXIT has no Hoare annotation [2018-11-14 16:24:48,482 WARN L170 areAnnotationChecker]: mainEXIT has no Hoare annotation [2018-11-14 16:24:48,483 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. [2018-11-14 16:24:48,494 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.11 04:24:48 BoogieIcfgContainer [2018-11-14 16:24:48,494 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-14 16:24:48,495 INFO L168 Benchmark]: Toolchain (without parser) took 2595.71 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 738.2 MB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -691.4 MB). Peak memory consumption was 46.8 MB. Max. memory is 7.1 GB. [2018-11-14 16:24:48,498 INFO L168 Benchmark]: CDTParser took 0.33 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. [2018-11-14 16:24:48,498 INFO L168 Benchmark]: CACSL2BoogieTranslator took 324.09 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-11-14 16:24:48,499 INFO L168 Benchmark]: Boogie Preprocessor took 41.53 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-14 16:24:48,500 INFO L168 Benchmark]: RCFGBuilder took 526.00 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 738.2 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -794.8 MB). Peak memory consumption was 26.2 MB. Max. memory is 7.1 GB. [2018-11-14 16:24:48,501 INFO L168 Benchmark]: TraceAbstraction took 1698.70 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: 92.8 MB). Peak memory consumption was 92.8 MB. Max. memory is 7.1 GB. [2018-11-14 16:24:48,506 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 0.33 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 324.09 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 41.53 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 526.00 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 738.2 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -794.8 MB). Peak memory consumption was 26.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1698.70 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: 92.8 MB). Peak memory consumption was 92.8 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: a == b || a == b - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 17 locations, 1 error locations. SAFE Result, 1.6s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.2s 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, 0.2s 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, 15 HoareAnnotationTreeSize, 6 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 6 FomulaSimplificationsInter, 22 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 9 NumberOfCodeBlocks, 9 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 208 SizeOfPredicates, 4 NumberOfNonLiveVariables, 44 ConjunctsInSsa, 6 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...