java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -s config/svcomp-Reach-32bit-Automizer_Default.epf --rcfgbuilder.command.for.external.solver 'z3 SMTLIB2_COMPLIANT=true -memory:4096 -smt2 -in -t:12000' -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --rcfgbuilder.size.of.a.code.block SingleStatement -i /storage/repos/svcomp/c/array-crafted/xor5_true-unreach-call.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-7aa59a0 [2019-05-23 11:28:59,813 INFO L146 ILogger]: Resetting all preferences to default values... [2019-05-23 11:28:59,815 INFO L146 ILogger]: Resetting UltimateCore preferences to default values [2019-05-23 11:28:59,828 INFO L146 ILogger]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-05-23 11:28:59,829 INFO L146 ILogger]: Resetting Boogie Preprocessor preferences to default values [2019-05-23 11:28:59,830 INFO L146 ILogger]: Resetting Boogie Procedure Inliner preferences to default values [2019-05-23 11:28:59,832 INFO L146 ILogger]: Resetting Abstract Interpretation preferences to default values [2019-05-23 11:28:59,835 INFO L146 ILogger]: Resetting LassoRanker preferences to default values [2019-05-23 11:28:59,837 INFO L146 ILogger]: Resetting Reaching Definitions preferences to default values [2019-05-23 11:28:59,838 INFO L146 ILogger]: Resetting SyntaxChecker preferences to default values [2019-05-23 11:28:59,847 INFO L146 ILogger]: Büchi Program Product provides no preferences, ignoring... [2019-05-23 11:28:59,847 INFO L146 ILogger]: Resetting LTL2Aut preferences to default values [2019-05-23 11:28:59,851 INFO L146 ILogger]: Resetting PEA to Boogie preferences to default values [2019-05-23 11:28:59,852 INFO L146 ILogger]: Resetting BlockEncodingV2 preferences to default values [2019-05-23 11:28:59,853 INFO L146 ILogger]: Resetting ChcToBoogie preferences to default values [2019-05-23 11:28:59,856 INFO L146 ILogger]: Resetting AutomataScriptInterpreter preferences to default values [2019-05-23 11:28:59,857 INFO L146 ILogger]: Resetting BuchiAutomizer preferences to default values [2019-05-23 11:28:59,861 INFO L146 ILogger]: Resetting CACSL2BoogieTranslator preferences to default values [2019-05-23 11:28:59,864 INFO L146 ILogger]: Resetting CodeCheck preferences to default values [2019-05-23 11:28:59,866 INFO L146 ILogger]: Resetting InvariantSynthesis preferences to default values [2019-05-23 11:28:59,869 INFO L146 ILogger]: Resetting RCFGBuilder preferences to default values [2019-05-23 11:28:59,870 INFO L146 ILogger]: Resetting TraceAbstraction preferences to default values [2019-05-23 11:28:59,874 INFO L146 ILogger]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-05-23 11:28:59,874 INFO L146 ILogger]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-05-23 11:28:59,874 INFO L146 ILogger]: Resetting TreeAutomizer preferences to default values [2019-05-23 11:28:59,875 INFO L146 ILogger]: Resetting IcfgToChc preferences to default values [2019-05-23 11:28:59,875 INFO L146 ILogger]: Resetting IcfgTransformer preferences to default values [2019-05-23 11:28:59,878 INFO L146 ILogger]: ReqToTest provides no preferences, ignoring... [2019-05-23 11:28:59,878 INFO L146 ILogger]: Resetting Boogie Printer preferences to default values [2019-05-23 11:28:59,879 INFO L146 ILogger]: Resetting ChcSmtPrinter preferences to default values [2019-05-23 11:28:59,879 INFO L146 ILogger]: Resetting ReqPrinter preferences to default values [2019-05-23 11:28:59,880 INFO L146 ILogger]: Resetting Witness Printer preferences to default values [2019-05-23 11:28:59,882 INFO L146 ILogger]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-05-23 11:28:59,882 INFO L146 ILogger]: Resetting CDTParser preferences to default values [2019-05-23 11:28:59,883 INFO L146 ILogger]: AutomataScriptParser provides no preferences, ignoring... [2019-05-23 11:28:59,884 INFO L146 ILogger]: ReqParser provides no preferences, ignoring... [2019-05-23 11:28:59,884 INFO L146 ILogger]: Resetting SmtParser preferences to default values [2019-05-23 11:28:59,885 INFO L146 ILogger]: Resetting Witness Parser preferences to default values [2019-05-23 11:28:59,886 INFO L146 ILogger]: Finished resetting all preferences to default values... [2019-05-23 11:28:59,886 INFO L146 ILogger]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-05-23 11:28:59,901 INFO L146 ILogger]: Loading preferences was successful [2019-05-23 11:28:59,902 INFO L146 ILogger]: Preferences different from defaults after loading the file: [2019-05-23 11:28:59,903 INFO L146 ILogger]: Preferences of BlockEncodingV2 differ from their defaults: [2019-05-23 11:28:59,903 INFO L146 ILogger]: * Create parallel compositions if possible=false [2019-05-23 11:28:59,903 INFO L146 ILogger]: * Use SBE=true [2019-05-23 11:28:59,904 INFO L146 ILogger]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-05-23 11:28:59,904 INFO L146 ILogger]: * sizeof long=4 [2019-05-23 11:28:59,904 INFO L146 ILogger]: * Overapproximate operations on floating types=true [2019-05-23 11:28:59,904 INFO L146 ILogger]: * sizeof POINTER=4 [2019-05-23 11:28:59,905 INFO L146 ILogger]: * Check division by zero=IGNORE [2019-05-23 11:28:59,905 INFO L146 ILogger]: * Pointer to allocated memory at dereference=IGNORE [2019-05-23 11:28:59,905 INFO L146 ILogger]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-05-23 11:28:59,905 INFO L146 ILogger]: * Check array bounds for arrays that are off heap=IGNORE [2019-05-23 11:28:59,905 INFO L146 ILogger]: * sizeof long double=12 [2019-05-23 11:28:59,906 INFO L146 ILogger]: * Check if freed pointer was valid=false [2019-05-23 11:28:59,906 INFO L146 ILogger]: * Use constant arrays=true [2019-05-23 11:28:59,906 INFO L146 ILogger]: * Pointer base address is valid at dereference=IGNORE [2019-05-23 11:28:59,906 INFO L146 ILogger]: Preferences of RCFGBuilder differ from their defaults: [2019-05-23 11:28:59,906 INFO L146 ILogger]: * Size of a code block=SequenceOfStatements [2019-05-23 11:28:59,907 INFO L146 ILogger]: * To the following directory=./dump/ [2019-05-23 11:28:59,907 INFO L146 ILogger]: * SMT solver=External_DefaultMode [2019-05-23 11:28:59,907 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-05-23 11:28:59,907 INFO L146 ILogger]: Preferences of TraceAbstraction differ from their defaults: [2019-05-23 11:28:59,908 INFO L146 ILogger]: * Compute Interpolants along a Counterexample=FPandBP [2019-05-23 11:28:59,908 INFO L146 ILogger]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-05-23 11:28:59,908 INFO L146 ILogger]: * Trace refinement strategy=CAMEL [2019-05-23 11:28:59,908 INFO L146 ILogger]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-05-23 11:28:59,908 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-05-23 11:28:59,909 INFO L146 ILogger]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Command for external solver -> z3 SMTLIB2_COMPLIANT=true -memory:4096 -smt2 -in -t:12000 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement [2019-05-23 11:28:59,947 INFO L146 ILogger]: Repository-Root is: /tmp [2019-05-23 11:28:59,961 INFO L146 ILogger]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-05-23 11:28:59,968 INFO L146 ILogger]: [Toolchain 1]: Toolchain selected. [2019-05-23 11:28:59,969 INFO L146 ILogger]: Initializing CDTParser... [2019-05-23 11:28:59,970 INFO L146 ILogger]: CDTParser initialized [2019-05-23 11:28:59,970 INFO L146 ILogger]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/array-crafted/xor5_true-unreach-call.i [2019-05-23 11:29:00,042 INFO L146 ILogger]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bfde8e96b/f08d927d4e744e27ae122cdadcf32f9c/FLAGa3042bce6 [2019-05-23 11:29:00,421 INFO L146 ILogger]: Found 1 translation units. [2019-05-23 11:29:00,422 INFO L146 ILogger]: Scanning /storage/repos/svcomp/c/array-crafted/xor5_true-unreach-call.i [2019-05-23 11:29:00,428 INFO L146 ILogger]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bfde8e96b/f08d927d4e744e27ae122cdadcf32f9c/FLAGa3042bce6 [2019-05-23 11:29:00,820 INFO L146 ILogger]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bfde8e96b/f08d927d4e744e27ae122cdadcf32f9c [2019-05-23 11:29:00,831 INFO L146 ILogger]: ####################### [Toolchain 1] ####################### [2019-05-23 11:29:00,832 INFO L146 ILogger]: Walking toolchain with 5 elements. [2019-05-23 11:29:00,833 INFO L146 ILogger]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-05-23 11:29:00,833 INFO L146 ILogger]: Initializing CACSL2BoogieTranslator... [2019-05-23 11:29:00,835 INFO L146 ILogger]: CACSL2BoogieTranslator initialized [2019-05-23 11:29:00,836 INFO L146 ILogger]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:29:00" (1/1) ... [2019-05-23 11:29:00,839 INFO L146 ILogger]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@494eb3b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:00, skipping insertion in model container [2019-05-23 11:29:00,840 INFO L146 ILogger]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:29:00" (1/1) ... [2019-05-23 11:29:00,848 INFO L146 ILogger]: Starting translation in SV-COMP mode [2019-05-23 11:29:00,867 INFO L146 ILogger]: Built tables and reachable declarations [2019-05-23 11:29:01,102 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:29:01,111 INFO L146 ILogger]: Completed pre-run [2019-05-23 11:29:01,143 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:29:01,163 INFO L146 ILogger]: Completed translation [2019-05-23 11:29:01,163 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:01 WrapperNode [2019-05-23 11:29:01,164 INFO L146 ILogger]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-05-23 11:29:01,165 INFO L146 ILogger]: ------------------------Boogie Procedure Inliner---------------------------- [2019-05-23 11:29:01,165 INFO L146 ILogger]: Initializing Boogie Procedure Inliner... [2019-05-23 11:29:01,165 INFO L146 ILogger]: Boogie Procedure Inliner initialized [2019-05-23 11:29:01,175 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:01" (1/1) ... [2019-05-23 11:29:01,185 INFO L146 ILogger]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:01" (1/1) ... [2019-05-23 11:29:01,213 INFO L146 ILogger]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-05-23 11:29:01,214 INFO L146 ILogger]: ------------------------Boogie Preprocessor---------------------------- [2019-05-23 11:29:01,214 INFO L146 ILogger]: Initializing Boogie Preprocessor... [2019-05-23 11:29:01,214 INFO L146 ILogger]: Boogie Preprocessor initialized [2019-05-23 11:29:01,222 INFO L146 ILogger]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:01" (1/1) ... [2019-05-23 11:29:01,222 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:01" (1/1) ... [2019-05-23 11:29:01,225 INFO L146 ILogger]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:01" (1/1) ... [2019-05-23 11:29:01,225 INFO L146 ILogger]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:01" (1/1) ... [2019-05-23 11:29:01,234 INFO L146 ILogger]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:01" (1/1) ... [2019-05-23 11:29:01,333 INFO L146 ILogger]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:01" (1/1) ... [2019-05-23 11:29:01,335 INFO L146 ILogger]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:01" (1/1) ... [2019-05-23 11:29:01,342 INFO L146 ILogger]: ------------------------ END Boogie Preprocessor---------------------------- [2019-05-23 11:29:01,343 INFO L146 ILogger]: ------------------------RCFGBuilder---------------------------- [2019-05-23 11:29:01,343 INFO L146 ILogger]: Initializing RCFGBuilder... [2019-05-23 11:29:01,343 INFO L146 ILogger]: RCFGBuilder initialized [2019-05-23 11:29:01,344 INFO L146 ILogger]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:01" (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:4096 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4096 -smt2 -in -t:12000 [2019-05-23 11:29:01,401 INFO L146 ILogger]: Found specification of procedure write~int [2019-05-23 11:29:01,401 INFO L146 ILogger]: Found specification of procedure ULTIMATE.start [2019-05-23 11:29:01,402 INFO L146 ILogger]: Found implementation of procedure ULTIMATE.start [2019-05-23 11:29:01,402 INFO L146 ILogger]: Found specification of procedure read~int [2019-05-23 11:29:01,402 INFO L146 ILogger]: Found specification of procedure #Ultimate.allocOnStack [2019-05-23 11:29:01,402 INFO L146 ILogger]: Found specification of procedure ULTIMATE.dealloc [2019-05-23 11:29:02,041 INFO L146 ILogger]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-05-23 11:29:02,041 INFO L146 ILogger]: Removed 14 assume(true) statements. [2019-05-23 11:29:02,042 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:29:02 BoogieIcfgContainer [2019-05-23 11:29:02,043 INFO L146 ILogger]: ------------------------ END RCFGBuilder---------------------------- [2019-05-23 11:29:02,044 INFO L146 ILogger]: ------------------------TraceAbstraction---------------------------- [2019-05-23 11:29:02,044 INFO L146 ILogger]: Initializing TraceAbstraction... [2019-05-23 11:29:02,047 INFO L146 ILogger]: TraceAbstraction initialized [2019-05-23 11:29:02,047 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.05 11:29:00" (1/3) ... [2019-05-23 11:29:02,048 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e0e2ea6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:29:02, skipping insertion in model container [2019-05-23 11:29:02,048 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:01" (2/3) ... [2019-05-23 11:29:02,049 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e0e2ea6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:29:02, skipping insertion in model container [2019-05-23 11:29:02,049 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:29:02" (3/3) ... [2019-05-23 11:29:02,051 INFO L146 ILogger]: Analyzing ICFG xor5_true-unreach-call.i [2019-05-23 11:29:02,060 INFO L146 ILogger]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-05-23 11:29:02,068 INFO L146 ILogger]: Appying trace abstraction to program that has 1 error locations. [2019-05-23 11:29:02,085 INFO L146 ILogger]: Starting to check reachability of 1 error locations. [2019-05-23 11:29:02,113 INFO L146 ILogger]: Using default assertion order modulation [2019-05-23 11:29:02,114 INFO L146 ILogger]: Interprodecural is true [2019-05-23 11:29:02,114 INFO L146 ILogger]: Hoare is true [2019-05-23 11:29:02,114 INFO L146 ILogger]: Compute interpolants for FPandBP [2019-05-23 11:29:02,114 INFO L146 ILogger]: Backedges is STRAIGHT_LINE [2019-05-23 11:29:02,114 INFO L146 ILogger]: Determinization is PREDICATE_ABSTRACTION [2019-05-23 11:29:02,115 INFO L146 ILogger]: Difference is false [2019-05-23 11:29:02,115 INFO L146 ILogger]: Minimize is MINIMIZE_SEVPA [2019-05-23 11:29:02,115 INFO L146 ILogger]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-05-23 11:29:02,133 INFO L146 ILogger]: Start isEmpty. Operand 108 states. [2019-05-23 11:29:02,141 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 78 [2019-05-23 11:29:02,141 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:02,143 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:29:02,144 INFO L146 ILogger]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:02,150 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:02,150 INFO L146 ILogger]: Analyzing trace with hash -688569893, now seen corresponding path program 1 times [2019-05-23 11:29:02,152 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:02,153 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:02,194 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:02,194 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:29:02,194 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:02,254 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:02,344 INFO L146 ILogger]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:29:02,347 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:29:02,347 INFO L146 ILogger]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-05-23 11:29:02,351 INFO L146 ILogger]: Interpolant automaton has 2 states [2019-05-23 11:29:02,365 INFO L146 ILogger]: Constructing interpolant automaton starting with 2 interpolants. [2019-05-23 11:29:02,367 INFO L146 ILogger]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-05-23 11:29:02,369 INFO L146 ILogger]: Start difference. First operand 108 states. Second operand 2 states. [2019-05-23 11:29:02,396 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:02,396 INFO L146 ILogger]: Finished difference Result 185 states and 200 transitions. [2019-05-23 11:29:02,397 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-05-23 11:29:02,398 INFO L146 ILogger]: Start accepts. Automaton has 2 states. Word has length 77 [2019-05-23 11:29:02,399 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:02,409 INFO L146 ILogger]: With dead ends: 185 [2019-05-23 11:29:02,409 INFO L146 ILogger]: Without dead ends: 102 [2019-05-23 11:29:02,412 INFO L146 ILogger]: 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 [2019-05-23 11:29:02,431 INFO L146 ILogger]: Start minimizeSevpa. Operand 102 states. [2019-05-23 11:29:02,452 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 102 to 102. [2019-05-23 11:29:02,454 INFO L146 ILogger]: Start removeUnreachable. Operand 102 states. [2019-05-23 11:29:02,456 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 102 states to 102 states and 105 transitions. [2019-05-23 11:29:02,459 INFO L146 ILogger]: Start accepts. Automaton has 102 states and 105 transitions. Word has length 77 [2019-05-23 11:29:02,460 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:02,460 INFO L146 ILogger]: Abstraction has 102 states and 105 transitions. [2019-05-23 11:29:02,460 INFO L146 ILogger]: Interpolant automaton has 2 states. [2019-05-23 11:29:02,461 INFO L146 ILogger]: Start isEmpty. Operand 102 states and 105 transitions. [2019-05-23 11:29:02,464 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 78 [2019-05-23 11:29:02,464 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:02,465 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:29:02,466 INFO L146 ILogger]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:02,466 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:02,466 INFO L146 ILogger]: Analyzing trace with hash -610948111, now seen corresponding path program 1 times [2019-05-23 11:29:02,466 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:02,467 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:02,468 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:02,469 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:29:02,469 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:02,516 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:02,655 INFO L146 ILogger]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:29:02,655 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:29:02,655 INFO L146 ILogger]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-05-23 11:29:02,657 INFO L146 ILogger]: Interpolant automaton has 4 states [2019-05-23 11:29:02,657 INFO L146 ILogger]: Constructing interpolant automaton starting with 4 interpolants. [2019-05-23 11:29:02,658 INFO L146 ILogger]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-05-23 11:29:02,658 INFO L146 ILogger]: Start difference. First operand 102 states and 105 transitions. Second operand 4 states. [2019-05-23 11:29:02,960 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:02,960 INFO L146 ILogger]: Finished difference Result 191 states and 199 transitions. [2019-05-23 11:29:02,961 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-05-23 11:29:02,961 INFO L146 ILogger]: Start accepts. Automaton has 4 states. Word has length 77 [2019-05-23 11:29:02,961 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:02,963 INFO L146 ILogger]: With dead ends: 191 [2019-05-23 11:29:02,963 INFO L146 ILogger]: Without dead ends: 120 [2019-05-23 11:29:02,965 INFO L146 ILogger]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-05-23 11:29:02,965 INFO L146 ILogger]: Start minimizeSevpa. Operand 120 states. [2019-05-23 11:29:02,975 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 120 to 105. [2019-05-23 11:29:02,975 INFO L146 ILogger]: Start removeUnreachable. Operand 105 states. [2019-05-23 11:29:02,977 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 105 states to 105 states and 108 transitions. [2019-05-23 11:29:02,977 INFO L146 ILogger]: Start accepts. Automaton has 105 states and 108 transitions. Word has length 77 [2019-05-23 11:29:02,978 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:02,978 INFO L146 ILogger]: Abstraction has 105 states and 108 transitions. [2019-05-23 11:29:02,978 INFO L146 ILogger]: Interpolant automaton has 4 states. [2019-05-23 11:29:02,978 INFO L146 ILogger]: Start isEmpty. Operand 105 states and 108 transitions. [2019-05-23 11:29:02,981 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 99 [2019-05-23 11:29:02,982 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:02,982 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:29:02,982 INFO L146 ILogger]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:02,983 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:02,983 INFO L146 ILogger]: Analyzing trace with hash 1965114810, now seen corresponding path program 1 times [2019-05-23 11:29:02,983 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:02,983 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:02,985 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:02,985 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:29:02,985 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:03,017 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:03,170 INFO L146 ILogger]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-05-23 11:29:03,170 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:29:03,171 INFO L146 ILogger]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-05-23 11:29:03,171 INFO L146 ILogger]: Interpolant automaton has 4 states [2019-05-23 11:29:03,172 INFO L146 ILogger]: Constructing interpolant automaton starting with 4 interpolants. [2019-05-23 11:29:03,172 INFO L146 ILogger]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-05-23 11:29:03,172 INFO L146 ILogger]: Start difference. First operand 105 states and 108 transitions. Second operand 4 states. [2019-05-23 11:29:03,372 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:03,372 INFO L146 ILogger]: Finished difference Result 138 states and 142 transitions. [2019-05-23 11:29:03,372 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-05-23 11:29:03,373 INFO L146 ILogger]: Start accepts. Automaton has 4 states. Word has length 98 [2019-05-23 11:29:03,373 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:03,374 INFO L146 ILogger]: With dead ends: 138 [2019-05-23 11:29:03,375 INFO L146 ILogger]: Without dead ends: 111 [2019-05-23 11:29:03,375 INFO L146 ILogger]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-05-23 11:29:03,376 INFO L146 ILogger]: Start minimizeSevpa. Operand 111 states. [2019-05-23 11:29:03,386 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 111 to 106. [2019-05-23 11:29:03,386 INFO L146 ILogger]: Start removeUnreachable. Operand 106 states. [2019-05-23 11:29:03,390 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 106 states to 106 states and 109 transitions. [2019-05-23 11:29:03,390 INFO L146 ILogger]: Start accepts. Automaton has 106 states and 109 transitions. Word has length 98 [2019-05-23 11:29:03,391 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:03,391 INFO L146 ILogger]: Abstraction has 106 states and 109 transitions. [2019-05-23 11:29:03,391 INFO L146 ILogger]: Interpolant automaton has 4 states. [2019-05-23 11:29:03,391 INFO L146 ILogger]: Start isEmpty. Operand 106 states and 109 transitions. [2019-05-23 11:29:03,393 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 106 [2019-05-23 11:29:03,393 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:03,393 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:29:03,394 INFO L146 ILogger]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:03,394 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:03,394 INFO L146 ILogger]: Analyzing trace with hash -1270746457, now seen corresponding path program 1 times [2019-05-23 11:29:03,394 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:03,394 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:03,395 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:03,396 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:29:03,396 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:03,437 INFO L146 ILogger]: Conjunction of SSA is sat [2019-05-23 11:29:03,519 INFO L146 ILogger]: Conjunction of SSA is sat [2019-05-23 11:29:03,587 INFO L146 ILogger]: Counterexample might be feasible [2019-05-23 11:29:03,673 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.05 11:29:03 BoogieIcfgContainer [2019-05-23 11:29:03,673 INFO L146 ILogger]: ------------------------ END TraceAbstraction---------------------------- [2019-05-23 11:29:03,675 INFO L146 ILogger]: Toolchain (without parser) took 2842.40 ms. Allocated memory was 132.6 MB in the beginning and 225.4 MB in the end (delta: 92.8 MB). Free memory was 89.4 MB in the beginning and 176.4 MB in the end (delta: -87.1 MB). Peak memory consumption was 5.7 MB. Max. memory is 7.1 GB. [2019-05-23 11:29:03,676 INFO L146 ILogger]: CDTParser took 0.20 ms. Allocated memory is still 132.6 MB. Free memory is still 107.6 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-05-23 11:29:03,677 INFO L146 ILogger]: CACSL2BoogieTranslator took 331.96 ms. Allocated memory is still 132.6 MB. Free memory was 89.4 MB in the beginning and 79.0 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2019-05-23 11:29:03,678 INFO L146 ILogger]: Boogie Procedure Inliner took 48.63 ms. Allocated memory is still 132.6 MB. Free memory was 79.0 MB in the beginning and 76.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2019-05-23 11:29:03,679 INFO L146 ILogger]: Boogie Preprocessor took 128.77 ms. Allocated memory was 132.6 MB in the beginning and 201.3 MB in the end (delta: 68.7 MB). Free memory was 76.9 MB in the beginning and 177.4 MB in the end (delta: -100.4 MB). Peak memory consumption was 17.7 MB. Max. memory is 7.1 GB. [2019-05-23 11:29:03,679 INFO L146 ILogger]: RCFGBuilder took 699.83 ms. Allocated memory is still 201.3 MB. Free memory was 177.4 MB in the beginning and 154.4 MB in the end (delta: 23.0 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. [2019-05-23 11:29:03,680 INFO L146 ILogger]: TraceAbstraction took 1629.51 ms. Allocated memory was 201.3 MB in the beginning and 225.4 MB in the end (delta: 24.1 MB). Free memory was 153.4 MB in the beginning and 176.4 MB in the end (delta: -23.0 MB). Peak memory consumption was 1.1 MB. Max. memory is 7.1 GB. [2019-05-23 11:29:03,685 INFO L146 ILogger]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 132.6 MB. Free memory is still 107.6 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 331.96 ms. Allocated memory is still 132.6 MB. Free memory was 89.4 MB in the beginning and 79.0 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 48.63 ms. Allocated memory is still 132.6 MB. Free memory was 79.0 MB in the beginning and 76.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 128.77 ms. Allocated memory was 132.6 MB in the beginning and 201.3 MB in the end (delta: 68.7 MB). Free memory was 76.9 MB in the beginning and 177.4 MB in the end (delta: -100.4 MB). Peak memory consumption was 17.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 699.83 ms. Allocated memory is still 201.3 MB. Free memory was 177.4 MB in the beginning and 154.4 MB in the end (delta: 23.0 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1629.51 ms. Allocated memory was 201.3 MB in the beginning and 225.4 MB in the end (delta: 24.1 MB). Free memory was 153.4 MB in the beginning and 176.4 MB in the end (delta: -23.0 MB). Peak memory consumption was 1.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 41]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseXor at line 14. Possible FailurePath: [L6] int N; VAL [N=0] [L21] N = __VERIFIER_nondet_int() VAL [N=2] [L22] COND TRUE N > 1 VAL [N=2] [L23] int x[N]; VAL [N=2] [L24] int temp; VAL [N=2] [L25] int ret; VAL [N=2] [L26] int ret2; VAL [N=2] [L27] int ret5; VAL [N=2] [L10] int i; VAL [N=2] [L11] long long res; VAL [N=2] [L12] EXPR x[0] VAL [N=2] [L12] res = x[0] VAL [N=2] [L13] i = 1 VAL [N=2] [L13] COND TRUE i < N VAL [N=2] [L14] EXPR x[i] VAL [N=2] [L14] res = res ^ x[i] VAL [N=2] [L13] i++ VAL [N=2] [L13] COND FALSE !(i < N) VAL [N=2] [L16] return res; VAL [N=2] [L29] ret = xor(x) VAL [N=2] [L31] EXPR x[0] VAL [N=2] [L31] temp=x[0] VAL [N=2] [L31] EXPR x[1] VAL [N=2] [L31] x[0] = x[1] VAL [N=2] [L31] x[1] = temp VAL [N=2] [L10] int i; VAL [N=2] [L11] long long res; VAL [N=2] [L12] EXPR x[0] VAL [N=2] [L12] res = x[0] VAL [N=2] [L13] i = 1 VAL [N=2] [L13] COND TRUE i < N VAL [N=2] [L14] EXPR x[i] VAL [N=2] [L14] res = res ^ x[i] VAL [N=2] [L13] i++ VAL [N=2] [L13] COND FALSE !(i < N) VAL [N=2] [L16] return res; VAL [N=2] [L32] ret2 = xor(x) VAL [N=2] [L33] EXPR x[0] VAL [N=2] [L33] temp=x[0] VAL [N=2] [L34] int i =0 ; VAL [N=2] [L34] COND TRUE i