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-multidimensional/init-3-u_true-unreach-call.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-7aa59a0 [2019-05-23 11:31:03,555 INFO L146 ILogger]: Resetting all preferences to default values... [2019-05-23 11:31:03,557 INFO L146 ILogger]: Resetting UltimateCore preferences to default values [2019-05-23 11:31:03,571 INFO L146 ILogger]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-05-23 11:31:03,571 INFO L146 ILogger]: Resetting Boogie Preprocessor preferences to default values [2019-05-23 11:31:03,573 INFO L146 ILogger]: Resetting Boogie Procedure Inliner preferences to default values [2019-05-23 11:31:03,578 INFO L146 ILogger]: Resetting Abstract Interpretation preferences to default values [2019-05-23 11:31:03,581 INFO L146 ILogger]: Resetting LassoRanker preferences to default values [2019-05-23 11:31:03,583 INFO L146 ILogger]: Resetting Reaching Definitions preferences to default values [2019-05-23 11:31:03,584 INFO L146 ILogger]: Resetting SyntaxChecker preferences to default values [2019-05-23 11:31:03,585 INFO L146 ILogger]: Büchi Program Product provides no preferences, ignoring... [2019-05-23 11:31:03,585 INFO L146 ILogger]: Resetting LTL2Aut preferences to default values [2019-05-23 11:31:03,586 INFO L146 ILogger]: Resetting PEA to Boogie preferences to default values [2019-05-23 11:31:03,587 INFO L146 ILogger]: Resetting BlockEncodingV2 preferences to default values [2019-05-23 11:31:03,588 INFO L146 ILogger]: Resetting ChcToBoogie preferences to default values [2019-05-23 11:31:03,589 INFO L146 ILogger]: Resetting AutomataScriptInterpreter preferences to default values [2019-05-23 11:31:03,590 INFO L146 ILogger]: Resetting BuchiAutomizer preferences to default values [2019-05-23 11:31:03,592 INFO L146 ILogger]: Resetting CACSL2BoogieTranslator preferences to default values [2019-05-23 11:31:03,594 INFO L146 ILogger]: Resetting CodeCheck preferences to default values [2019-05-23 11:31:03,596 INFO L146 ILogger]: Resetting InvariantSynthesis preferences to default values [2019-05-23 11:31:03,597 INFO L146 ILogger]: Resetting RCFGBuilder preferences to default values [2019-05-23 11:31:03,599 INFO L146 ILogger]: Resetting TraceAbstraction preferences to default values [2019-05-23 11:31:03,601 INFO L146 ILogger]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-05-23 11:31:03,602 INFO L146 ILogger]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-05-23 11:31:03,602 INFO L146 ILogger]: Resetting TreeAutomizer preferences to default values [2019-05-23 11:31:03,603 INFO L146 ILogger]: Resetting IcfgToChc preferences to default values [2019-05-23 11:31:03,604 INFO L146 ILogger]: Resetting IcfgTransformer preferences to default values [2019-05-23 11:31:03,605 INFO L146 ILogger]: ReqToTest provides no preferences, ignoring... [2019-05-23 11:31:03,605 INFO L146 ILogger]: Resetting Boogie Printer preferences to default values [2019-05-23 11:31:03,606 INFO L146 ILogger]: Resetting ChcSmtPrinter preferences to default values [2019-05-23 11:31:03,607 INFO L146 ILogger]: Resetting ReqPrinter preferences to default values [2019-05-23 11:31:03,608 INFO L146 ILogger]: Resetting Witness Printer preferences to default values [2019-05-23 11:31:03,609 INFO L146 ILogger]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-05-23 11:31:03,609 INFO L146 ILogger]: Resetting CDTParser preferences to default values [2019-05-23 11:31:03,610 INFO L146 ILogger]: AutomataScriptParser provides no preferences, ignoring... [2019-05-23 11:31:03,610 INFO L146 ILogger]: ReqParser provides no preferences, ignoring... [2019-05-23 11:31:03,610 INFO L146 ILogger]: Resetting SmtParser preferences to default values [2019-05-23 11:31:03,611 INFO L146 ILogger]: Resetting Witness Parser preferences to default values [2019-05-23 11:31:03,612 INFO L146 ILogger]: Finished resetting all preferences to default values... [2019-05-23 11:31:03,613 INFO L146 ILogger]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-05-23 11:31:03,644 INFO L146 ILogger]: Loading preferences was successful [2019-05-23 11:31:03,645 INFO L146 ILogger]: Preferences different from defaults after loading the file: [2019-05-23 11:31:03,647 INFO L146 ILogger]: Preferences of BlockEncodingV2 differ from their defaults: [2019-05-23 11:31:03,648 INFO L146 ILogger]: * Create parallel compositions if possible=false [2019-05-23 11:31:03,648 INFO L146 ILogger]: * Use SBE=true [2019-05-23 11:31:03,648 INFO L146 ILogger]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-05-23 11:31:03,648 INFO L146 ILogger]: * sizeof long=4 [2019-05-23 11:31:03,648 INFO L146 ILogger]: * Overapproximate operations on floating types=true [2019-05-23 11:31:03,649 INFO L146 ILogger]: * sizeof POINTER=4 [2019-05-23 11:31:03,649 INFO L146 ILogger]: * Check division by zero=IGNORE [2019-05-23 11:31:03,649 INFO L146 ILogger]: * Pointer to allocated memory at dereference=IGNORE [2019-05-23 11:31:03,649 INFO L146 ILogger]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-05-23 11:31:03,649 INFO L146 ILogger]: * Check array bounds for arrays that are off heap=IGNORE [2019-05-23 11:31:03,650 INFO L146 ILogger]: * sizeof long double=12 [2019-05-23 11:31:03,650 INFO L146 ILogger]: * Check if freed pointer was valid=false [2019-05-23 11:31:03,651 INFO L146 ILogger]: * Use constant arrays=true [2019-05-23 11:31:03,651 INFO L146 ILogger]: * Pointer base address is valid at dereference=IGNORE [2019-05-23 11:31:03,651 INFO L146 ILogger]: Preferences of RCFGBuilder differ from their defaults: [2019-05-23 11:31:03,651 INFO L146 ILogger]: * Size of a code block=SequenceOfStatements [2019-05-23 11:31:03,651 INFO L146 ILogger]: * To the following directory=./dump/ [2019-05-23 11:31:03,652 INFO L146 ILogger]: * SMT solver=External_DefaultMode [2019-05-23 11:31:03,652 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-05-23 11:31:03,652 INFO L146 ILogger]: Preferences of TraceAbstraction differ from their defaults: [2019-05-23 11:31:03,652 INFO L146 ILogger]: * Compute Interpolants along a Counterexample=FPandBP [2019-05-23 11:31:03,652 INFO L146 ILogger]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-05-23 11:31:03,653 INFO L146 ILogger]: * Trace refinement strategy=CAMEL [2019-05-23 11:31:03,653 INFO L146 ILogger]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-05-23 11:31:03,654 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-05-23 11:31:03,654 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 11:31:03,709 INFO L146 ILogger]: Repository-Root is: /tmp [2019-05-23 11:31:03,723 INFO L146 ILogger]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-05-23 11:31:03,729 INFO L146 ILogger]: [Toolchain 1]: Toolchain selected. [2019-05-23 11:31:03,731 INFO L146 ILogger]: Initializing CDTParser... [2019-05-23 11:31:03,731 INFO L146 ILogger]: CDTParser initialized [2019-05-23 11:31:03,732 INFO L146 ILogger]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/array-multidimensional/init-3-u_true-unreach-call.i [2019-05-23 11:31:03,791 INFO L146 ILogger]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7bdada96b/77c5914fe1e94c83a5cad9e7933606cc/FLAGdce73a883 [2019-05-23 11:31:04,198 INFO L146 ILogger]: Found 1 translation units. [2019-05-23 11:31:04,199 INFO L146 ILogger]: Scanning /storage/repos/svcomp/c/array-multidimensional/init-3-u_true-unreach-call.i [2019-05-23 11:31:04,205 INFO L146 ILogger]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7bdada96b/77c5914fe1e94c83a5cad9e7933606cc/FLAGdce73a883 [2019-05-23 11:31:04,581 INFO L146 ILogger]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7bdada96b/77c5914fe1e94c83a5cad9e7933606cc [2019-05-23 11:31:04,591 INFO L146 ILogger]: ####################### [Toolchain 1] ####################### [2019-05-23 11:31:04,593 INFO L146 ILogger]: Walking toolchain with 5 elements. [2019-05-23 11:31:04,594 INFO L146 ILogger]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-05-23 11:31:04,594 INFO L146 ILogger]: Initializing CACSL2BoogieTranslator... [2019-05-23 11:31:04,599 INFO L146 ILogger]: CACSL2BoogieTranslator initialized [2019-05-23 11:31:04,600 INFO L146 ILogger]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:31:04" (1/1) ... [2019-05-23 11:31:04,603 INFO L146 ILogger]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10f9933a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:31:04, skipping insertion in model container [2019-05-23 11:31:04,603 INFO L146 ILogger]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:31:04" (1/1) ... [2019-05-23 11:31:04,610 INFO L146 ILogger]: Starting translation in SV-COMP mode [2019-05-23 11:31:04,628 INFO L146 ILogger]: Built tables and reachable declarations [2019-05-23 11:31:04,854 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:31:04,862 INFO L146 ILogger]: Completed pre-run [2019-05-23 11:31:04,899 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:31:04,932 INFO L146 ILogger]: Completed translation [2019-05-23 11:31:04,933 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:31:04 WrapperNode [2019-05-23 11:31:04,933 INFO L146 ILogger]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-05-23 11:31:04,935 INFO L146 ILogger]: ------------------------Boogie Procedure Inliner---------------------------- [2019-05-23 11:31:04,935 INFO L146 ILogger]: Initializing Boogie Procedure Inliner... [2019-05-23 11:31:04,935 INFO L146 ILogger]: Boogie Procedure Inliner initialized [2019-05-23 11:31:04,944 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:31:04" (1/1) ... [2019-05-23 11:31:04,952 INFO L146 ILogger]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:31:04" (1/1) ... [2019-05-23 11:31:04,973 INFO L146 ILogger]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-05-23 11:31:04,973 INFO L146 ILogger]: ------------------------Boogie Preprocessor---------------------------- [2019-05-23 11:31:04,973 INFO L146 ILogger]: Initializing Boogie Preprocessor... [2019-05-23 11:31:04,974 INFO L146 ILogger]: Boogie Preprocessor initialized [2019-05-23 11:31:04,981 INFO L146 ILogger]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:31:04" (1/1) ... [2019-05-23 11:31:04,982 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:31:04" (1/1) ... [2019-05-23 11:31:04,983 INFO L146 ILogger]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:31:04" (1/1) ... [2019-05-23 11:31:04,984 INFO L146 ILogger]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:31:04" (1/1) ... [2019-05-23 11:31:04,989 INFO L146 ILogger]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:31:04" (1/1) ... [2019-05-23 11:31:05,086 INFO L146 ILogger]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:31:04" (1/1) ... [2019-05-23 11:31:05,091 INFO L146 ILogger]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:31:04" (1/1) ... [2019-05-23 11:31:05,096 INFO L146 ILogger]: ------------------------ END Boogie Preprocessor---------------------------- [2019-05-23 11:31:05,097 INFO L146 ILogger]: ------------------------RCFGBuilder---------------------------- [2019-05-23 11:31:05,097 INFO L146 ILogger]: Initializing RCFGBuilder... [2019-05-23 11:31:05,097 INFO L146 ILogger]: RCFGBuilder initialized [2019-05-23 11:31:05,098 INFO L146 ILogger]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:31:04" (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 11:31:05,154 INFO L146 ILogger]: Found specification of procedure write~int [2019-05-23 11:31:05,154 INFO L146 ILogger]: Found specification of procedure ULTIMATE.start [2019-05-23 11:31:05,155 INFO L146 ILogger]: Found implementation of procedure ULTIMATE.start [2019-05-23 11:31:05,155 INFO L146 ILogger]: Found specification of procedure read~int [2019-05-23 11:31:05,155 INFO L146 ILogger]: Found specification of procedure #Ultimate.allocOnStack [2019-05-23 11:31:05,155 INFO L146 ILogger]: Found specification of procedure ULTIMATE.dealloc [2019-05-23 11:31:05,599 INFO L146 ILogger]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-05-23 11:31:05,599 INFO L146 ILogger]: Removed 12 assume(true) statements. [2019-05-23 11:31:05,600 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:31:05 BoogieIcfgContainer [2019-05-23 11:31:05,600 INFO L146 ILogger]: ------------------------ END RCFGBuilder---------------------------- [2019-05-23 11:31:05,602 INFO L146 ILogger]: ------------------------TraceAbstraction---------------------------- [2019-05-23 11:31:05,602 INFO L146 ILogger]: Initializing TraceAbstraction... [2019-05-23 11:31:05,605 INFO L146 ILogger]: TraceAbstraction initialized [2019-05-23 11:31:05,605 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.05 11:31:04" (1/3) ... [2019-05-23 11:31:05,606 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a88c81d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:31:05, skipping insertion in model container [2019-05-23 11:31:05,606 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:31:04" (2/3) ... [2019-05-23 11:31:05,606 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a88c81d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:31:05, skipping insertion in model container [2019-05-23 11:31:05,606 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:31:05" (3/3) ... [2019-05-23 11:31:05,611 INFO L146 ILogger]: Analyzing ICFG init-3-u_true-unreach-call.i [2019-05-23 11:31:05,619 INFO L146 ILogger]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-05-23 11:31:05,627 INFO L146 ILogger]: Appying trace abstraction to program that has 1 error locations. [2019-05-23 11:31:05,643 INFO L146 ILogger]: Starting to check reachability of 1 error locations. [2019-05-23 11:31:05,668 INFO L146 ILogger]: Using default assertion order modulation [2019-05-23 11:31:05,669 INFO L146 ILogger]: Interprodecural is true [2019-05-23 11:31:05,669 INFO L146 ILogger]: Hoare is true [2019-05-23 11:31:05,669 INFO L146 ILogger]: Compute interpolants for FPandBP [2019-05-23 11:31:05,669 INFO L146 ILogger]: Backedges is STRAIGHT_LINE [2019-05-23 11:31:05,669 INFO L146 ILogger]: Determinization is PREDICATE_ABSTRACTION [2019-05-23 11:31:05,669 INFO L146 ILogger]: Difference is false [2019-05-23 11:31:05,670 INFO L146 ILogger]: Minimize is MINIMIZE_SEVPA [2019-05-23 11:31:05,670 INFO L146 ILogger]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-05-23 11:31:05,684 INFO L146 ILogger]: Start isEmpty. Operand 51 states. [2019-05-23 11:31:05,691 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 32 [2019-05-23 11:31:05,691 INFO L146 ILogger]: Found error trace [2019-05-23 11:31:05,692 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] [2019-05-23 11:31:05,694 INFO L146 ILogger]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:31:05,698 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:31:05,698 INFO L146 ILogger]: Analyzing trace with hash 900743684, now seen corresponding path program 1 times [2019-05-23 11:31:05,700 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:31:05,700 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:31:05,747 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:31:05,748 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:31:05,748 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:31:05,781 ERROR L146 ILogger]: Caught known exception: Unsupported non-linear arithmetic [2019-05-23 11:31:05,781 INFO L146 ILogger]: Advancing trace checker [2019-05-23 11:31:05,781 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-05-23 11:31:05,793 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:31:05,819 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:31:05,821 INFO L146 ILogger]: Trace formula consists of 59 conjuncts, 3 conjunts are in the unsatisfiable core [2019-05-23 11:31:05,827 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:31:05,887 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 11:31:05,914 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:31:05,914 INFO L146 ILogger]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-05-23 11:31:05,917 INFO L146 ILogger]: Interpolant automaton has 4 states [2019-05-23 11:31:05,927 INFO L146 ILogger]: Constructing interpolant automaton starting with 4 interpolants. [2019-05-23 11:31:05,928 INFO L146 ILogger]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-05-23 11:31:05,930 INFO L146 ILogger]: Start difference. First operand 51 states. Second operand 4 states. [2019-05-23 11:31:06,289 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:31:06,290 INFO L146 ILogger]: Finished difference Result 114 states and 151 transitions. [2019-05-23 11:31:06,291 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-05-23 11:31:06,292 INFO L146 ILogger]: Start accepts. Automaton has 4 states. Word has length 31 [2019-05-23 11:31:06,293 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:31:06,303 INFO L146 ILogger]: With dead ends: 114 [2019-05-23 11:31:06,303 INFO L146 ILogger]: Without dead ends: 72 [2019-05-23 11:31:06,306 INFO L146 ILogger]: 0 DeclaredPredicates, 30 GetRequests, 28 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 11:31:06,324 INFO L146 ILogger]: Start minimizeSevpa. Operand 72 states. [2019-05-23 11:31:06,342 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 72 to 46. [2019-05-23 11:31:06,343 INFO L146 ILogger]: Start removeUnreachable. Operand 46 states. [2019-05-23 11:31:06,345 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 46 states to 46 states and 51 transitions. [2019-05-23 11:31:06,346 INFO L146 ILogger]: Start accepts. Automaton has 46 states and 51 transitions. Word has length 31 [2019-05-23 11:31:06,347 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:31:06,347 INFO L146 ILogger]: Abstraction has 46 states and 51 transitions. [2019-05-23 11:31:06,347 INFO L146 ILogger]: Interpolant automaton has 4 states. [2019-05-23 11:31:06,347 INFO L146 ILogger]: Start isEmpty. Operand 46 states and 51 transitions. [2019-05-23 11:31:06,348 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 37 [2019-05-23 11:31:06,349 INFO L146 ILogger]: Found error trace [2019-05-23 11:31:06,349 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] [2019-05-23 11:31:06,349 INFO L146 ILogger]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:31:06,350 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:31:06,350 INFO L146 ILogger]: Analyzing trace with hash 1245253509, now seen corresponding path program 1 times [2019-05-23 11:31:06,350 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:31:06,350 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:31:06,351 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:31:06,351 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:31:06,352 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:31:06,357 ERROR L146 ILogger]: Caught known exception: Unsupported non-linear arithmetic [2019-05-23 11:31:06,357 INFO L146 ILogger]: Advancing trace checker [2019-05-23 11:31:06,357 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-05-23 11:31:06,378 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:31:06,416 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:31:06,417 INFO L146 ILogger]: Trace formula consists of 67 conjuncts, 3 conjunts are in the unsatisfiable core [2019-05-23 11:31:06,420 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:31:06,602 INFO L146 ILogger]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:31:06,629 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:31:06,629 INFO L146 ILogger]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-05-23 11:31:06,631 INFO L146 ILogger]: Interpolant automaton has 4 states [2019-05-23 11:31:06,631 INFO L146 ILogger]: Constructing interpolant automaton starting with 4 interpolants. [2019-05-23 11:31:06,632 INFO L146 ILogger]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-05-23 11:31:06,632 INFO L146 ILogger]: Start difference. First operand 46 states and 51 transitions. Second operand 4 states. [2019-05-23 11:31:06,798 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:31:06,798 INFO L146 ILogger]: Finished difference Result 98 states and 112 transitions. [2019-05-23 11:31:06,799 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-05-23 11:31:06,799 INFO L146 ILogger]: Start accepts. Automaton has 4 states. Word has length 36 [2019-05-23 11:31:06,799 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:31:06,800 INFO L146 ILogger]: With dead ends: 98 [2019-05-23 11:31:06,800 INFO L146 ILogger]: Without dead ends: 68 [2019-05-23 11:31:06,802 INFO L146 ILogger]: 0 DeclaredPredicates, 35 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-05-23 11:31:06,802 INFO L146 ILogger]: Start minimizeSevpa. Operand 68 states. [2019-05-23 11:31:06,809 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 68 to 48. [2019-05-23 11:31:06,809 INFO L146 ILogger]: Start removeUnreachable. Operand 48 states. [2019-05-23 11:31:06,810 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 48 states to 48 states and 53 transitions. [2019-05-23 11:31:06,810 INFO L146 ILogger]: Start accepts. Automaton has 48 states and 53 transitions. Word has length 36 [2019-05-23 11:31:06,811 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:31:06,811 INFO L146 ILogger]: Abstraction has 48 states and 53 transitions. [2019-05-23 11:31:06,811 INFO L146 ILogger]: Interpolant automaton has 4 states. [2019-05-23 11:31:06,811 INFO L146 ILogger]: Start isEmpty. Operand 48 states and 53 transitions. [2019-05-23 11:31:06,812 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 41 [2019-05-23 11:31:06,812 INFO L146 ILogger]: Found error trace [2019-05-23 11:31:06,813 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] [2019-05-23 11:31:06,813 INFO L146 ILogger]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:31:06,813 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:31:06,813 INFO L146 ILogger]: Analyzing trace with hash -206595122, now seen corresponding path program 1 times [2019-05-23 11:31:06,814 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:31:06,814 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:31:06,815 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:31:06,815 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:31:06,815 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:31:06,820 ERROR L146 ILogger]: Caught known exception: Unsupported non-linear arithmetic [2019-05-23 11:31:06,820 INFO L146 ILogger]: Advancing trace checker [2019-05-23 11:31:06,820 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-05-23 11:31:06,839 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:31:06,867 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:31:06,868 INFO L146 ILogger]: Trace formula consists of 73 conjuncts, 3 conjunts are in the unsatisfiable core [2019-05-23 11:31:06,870 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:31:06,972 INFO L146 ILogger]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:31:06,992 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:31:06,993 INFO L146 ILogger]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-05-23 11:31:06,993 INFO L146 ILogger]: Interpolant automaton has 4 states [2019-05-23 11:31:06,993 INFO L146 ILogger]: Constructing interpolant automaton starting with 4 interpolants. [2019-05-23 11:31:06,994 INFO L146 ILogger]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-05-23 11:31:06,994 INFO L146 ILogger]: Start difference. First operand 48 states and 53 transitions. Second operand 4 states. [2019-05-23 11:31:07,113 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:31:07,114 INFO L146 ILogger]: Finished difference Result 100 states and 112 transitions. [2019-05-23 11:31:07,115 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-05-23 11:31:07,115 INFO L146 ILogger]: Start accepts. Automaton has 4 states. Word has length 40 [2019-05-23 11:31:07,115 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:31:07,117 INFO L146 ILogger]: With dead ends: 100 [2019-05-23 11:31:07,118 INFO L146 ILogger]: Without dead ends: 68 [2019-05-23 11:31:07,118 INFO L146 ILogger]: 0 DeclaredPredicates, 39 GetRequests, 37 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 11:31:07,119 INFO L146 ILogger]: Start minimizeSevpa. Operand 68 states. [2019-05-23 11:31:07,126 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 68 to 50. [2019-05-23 11:31:07,127 INFO L146 ILogger]: Start removeUnreachable. Operand 50 states. [2019-05-23 11:31:07,128 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 50 states to 50 states and 55 transitions. [2019-05-23 11:31:07,128 INFO L146 ILogger]: Start accepts. Automaton has 50 states and 55 transitions. Word has length 40 [2019-05-23 11:31:07,128 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:31:07,128 INFO L146 ILogger]: Abstraction has 50 states and 55 transitions. [2019-05-23 11:31:07,128 INFO L146 ILogger]: Interpolant automaton has 4 states. [2019-05-23 11:31:07,129 INFO L146 ILogger]: Start isEmpty. Operand 50 states and 55 transitions. [2019-05-23 11:31:07,130 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 44 [2019-05-23 11:31:07,130 INFO L146 ILogger]: Found error trace [2019-05-23 11:31:07,130 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] [2019-05-23 11:31:07,130 INFO L146 ILogger]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:31:07,131 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:31:07,131 INFO L146 ILogger]: Analyzing trace with hash 135115318, now seen corresponding path program 1 times [2019-05-23 11:31:07,131 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:31:07,131 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:31:07,132 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:31:07,132 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:31:07,133 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:31:07,137 ERROR L146 ILogger]: Caught known exception: Unsupported non-linear arithmetic [2019-05-23 11:31:07,137 INFO L146 ILogger]: Advancing trace checker [2019-05-23 11:31:07,137 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-05-23 11:31:07,158 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:31:07,194 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:31:07,195 INFO L146 ILogger]: Trace formula consists of 77 conjuncts, 4 conjunts are in the unsatisfiable core [2019-05-23 11:31:07,197 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:31:07,271 INFO L146 ILogger]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:31:07,298 INFO L146 ILogger]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-05-23 11:31:07,299 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2019-05-23 11:31:07,299 INFO L146 ILogger]: Interpolant automaton has 5 states [2019-05-23 11:31:07,299 INFO L146 ILogger]: Constructing interpolant automaton starting with 5 interpolants. [2019-05-23 11:31:07,300 INFO L146 ILogger]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-05-23 11:31:07,300 INFO L146 ILogger]: Start difference. First operand 50 states and 55 transitions. Second operand 5 states. [2019-05-23 11:31:07,747 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:31:07,747 INFO L146 ILogger]: Finished difference Result 115 states and 127 transitions. [2019-05-23 11:31:07,747 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-05-23 11:31:07,747 INFO L146 ILogger]: Start accepts. Automaton has 5 states. Word has length 43 [2019-05-23 11:31:07,748 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:31:07,749 INFO L146 ILogger]: With dead ends: 115 [2019-05-23 11:31:07,749 INFO L146 ILogger]: Without dead ends: 81 [2019-05-23 11:31:07,750 INFO L146 ILogger]: 0 DeclaredPredicates, 42 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-05-23 11:31:07,750 INFO L146 ILogger]: Start minimizeSevpa. Operand 81 states. [2019-05-23 11:31:07,758 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 81 to 61. [2019-05-23 11:31:07,758 INFO L146 ILogger]: Start removeUnreachable. Operand 61 states. [2019-05-23 11:31:07,759 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 61 states to 61 states and 67 transitions. [2019-05-23 11:31:07,759 INFO L146 ILogger]: Start accepts. Automaton has 61 states and 67 transitions. Word has length 43 [2019-05-23 11:31:07,759 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:31:07,760 INFO L146 ILogger]: Abstraction has 61 states and 67 transitions. [2019-05-23 11:31:07,762 INFO L146 ILogger]: Interpolant automaton has 5 states. [2019-05-23 11:31:07,762 INFO L146 ILogger]: Start isEmpty. Operand 61 states and 67 transitions. [2019-05-23 11:31:07,763 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 47 [2019-05-23 11:31:07,764 INFO L146 ILogger]: Found error trace [2019-05-23 11:31:07,764 INFO L146 ILogger]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:31:07,764 INFO L146 ILogger]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:31:07,764 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:31:07,764 INFO L146 ILogger]: Analyzing trace with hash 958341838, now seen corresponding path program 2 times [2019-05-23 11:31:07,765 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:31:07,765 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:31:07,766 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:31:07,766 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:31:07,766 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:31:07,770 ERROR L146 ILogger]: Caught known exception: Unsupported non-linear arithmetic [2019-05-23 11:31:07,770 INFO L146 ILogger]: Advancing trace checker [2019-05-23 11:31:07,770 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-05-23 11:31:07,782 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:31:07,808 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:31:07,808 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:31:07,809 INFO L146 ILogger]: Trace formula consists of 81 conjuncts, 5 conjunts are in the unsatisfiable core [2019-05-23 11:31:07,812 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:31:07,878 INFO L146 ILogger]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:31:07,904 INFO L146 ILogger]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-05-23 11:31:07,904 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2019-05-23 11:31:07,904 INFO L146 ILogger]: Interpolant automaton has 6 states [2019-05-23 11:31:07,905 INFO L146 ILogger]: Constructing interpolant automaton starting with 6 interpolants. [2019-05-23 11:31:07,905 INFO L146 ILogger]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-05-23 11:31:07,906 INFO L146 ILogger]: Start difference. First operand 61 states and 67 transitions. Second operand 6 states. [2019-05-23 11:31:08,122 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:31:08,122 INFO L146 ILogger]: Finished difference Result 139 states and 152 transitions. [2019-05-23 11:31:08,123 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-05-23 11:31:08,123 INFO L146 ILogger]: Start accepts. Automaton has 6 states. Word has length 46 [2019-05-23 11:31:08,123 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:31:08,124 INFO L146 ILogger]: With dead ends: 139 [2019-05-23 11:31:08,124 INFO L146 ILogger]: Without dead ends: 94 [2019-05-23 11:31:08,125 INFO L146 ILogger]: 0 DeclaredPredicates, 45 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-05-23 11:31:08,125 INFO L146 ILogger]: Start minimizeSevpa. Operand 94 states. [2019-05-23 11:31:08,136 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 94 to 72. [2019-05-23 11:31:08,136 INFO L146 ILogger]: Start removeUnreachable. Operand 72 states. [2019-05-23 11:31:08,137 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 72 states to 72 states and 79 transitions. [2019-05-23 11:31:08,137 INFO L146 ILogger]: Start accepts. Automaton has 72 states and 79 transitions. Word has length 46 [2019-05-23 11:31:08,137 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:31:08,138 INFO L146 ILogger]: Abstraction has 72 states and 79 transitions. [2019-05-23 11:31:08,138 INFO L146 ILogger]: Interpolant automaton has 6 states. [2019-05-23 11:31:08,138 INFO L146 ILogger]: Start isEmpty. Operand 72 states and 79 transitions. [2019-05-23 11:31:08,139 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 50 [2019-05-23 11:31:08,139 INFO L146 ILogger]: Found error trace [2019-05-23 11:31:08,139 INFO L146 ILogger]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:31:08,139 INFO L146 ILogger]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:31:08,140 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:31:08,142 INFO L146 ILogger]: Analyzing trace with hash 1436338998, now seen corresponding path program 3 times [2019-05-23 11:31:08,142 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:31:08,142 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:31:08,143 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:31:08,143 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:31:08,143 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:31:08,147 ERROR L146 ILogger]: Caught known exception: Unsupported non-linear arithmetic [2019-05-23 11:31:08,147 INFO L146 ILogger]: Advancing trace checker [2019-05-23 11:31:08,147 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-05-23 11:31:08,156 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:31:08,170 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-05-23 11:31:08,170 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:31:08,171 INFO L146 ILogger]: Trace formula consists of 67 conjuncts, 4 conjunts are in the unsatisfiable core [2019-05-23 11:31:08,173 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:31:08,215 INFO L146 ILogger]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-05-23 11:31:08,234 INFO L146 ILogger]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-05-23 11:31:08,234 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2019-05-23 11:31:08,234 INFO L146 ILogger]: Interpolant automaton has 5 states [2019-05-23 11:31:08,234 INFO L146 ILogger]: Constructing interpolant automaton starting with 5 interpolants. [2019-05-23 11:31:08,235 INFO L146 ILogger]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-05-23 11:31:08,235 INFO L146 ILogger]: Start difference. First operand 72 states and 79 transitions. Second operand 5 states. [2019-05-23 11:31:08,383 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:31:08,383 INFO L146 ILogger]: Finished difference Result 215 states and 239 transitions. [2019-05-23 11:31:08,383 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-05-23 11:31:08,383 INFO L146 ILogger]: Start accepts. Automaton has 5 states. Word has length 49 [2019-05-23 11:31:08,384 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:31:08,386 INFO L146 ILogger]: With dead ends: 215 [2019-05-23 11:31:08,386 INFO L146 ILogger]: Without dead ends: 177 [2019-05-23 11:31:08,387 INFO L146 ILogger]: 0 DeclaredPredicates, 48 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-05-23 11:31:08,387 INFO L146 ILogger]: Start minimizeSevpa. Operand 177 states. [2019-05-23 11:31:08,396 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 177 to 90. [2019-05-23 11:31:08,396 INFO L146 ILogger]: Start removeUnreachable. Operand 90 states. [2019-05-23 11:31:08,397 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 90 states to 90 states and 99 transitions. [2019-05-23 11:31:08,397 INFO L146 ILogger]: Start accepts. Automaton has 90 states and 99 transitions. Word has length 49 [2019-05-23 11:31:08,398 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:31:08,398 INFO L146 ILogger]: Abstraction has 90 states and 99 transitions. [2019-05-23 11:31:08,398 INFO L146 ILogger]: Interpolant automaton has 5 states. [2019-05-23 11:31:08,398 INFO L146 ILogger]: Start isEmpty. Operand 90 states and 99 transitions. [2019-05-23 11:31:08,399 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 68 [2019-05-23 11:31:08,399 INFO L146 ILogger]: Found error trace [2019-05-23 11:31:08,399 INFO L146 ILogger]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 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 11:31:08,400 INFO L146 ILogger]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:31:08,400 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:31:08,400 INFO L146 ILogger]: Analyzing trace with hash 740305896, now seen corresponding path program 4 times [2019-05-23 11:31:08,400 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:31:08,400 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:31:08,401 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:31:08,401 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:31:08,402 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:31:08,405 ERROR L146 ILogger]: Caught known exception: Unsupported non-linear arithmetic [2019-05-23 11:31:08,405 INFO L146 ILogger]: Advancing trace checker [2019-05-23 11:31:08,405 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-05-23 11:31:08,425 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:31:08,453 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:31:08,454 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:31:08,454 INFO L146 ILogger]: Trace formula consists of 107 conjuncts, 7 conjunts are in the unsatisfiable core [2019-05-23 11:31:08,458 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:31:08,548 INFO L146 ILogger]: Checked inductivity of 72 backedges. 49 proven. 8 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-05-23 11:31:08,571 INFO L146 ILogger]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-05-23 11:31:08,571 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2019-05-23 11:31:08,572 INFO L146 ILogger]: Interpolant automaton has 8 states [2019-05-23 11:31:08,572 INFO L146 ILogger]: Constructing interpolant automaton starting with 8 interpolants. [2019-05-23 11:31:08,572 INFO L146 ILogger]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2019-05-23 11:31:08,572 INFO L146 ILogger]: Start difference. First operand 90 states and 99 transitions. Second operand 8 states. [2019-05-23 11:31:09,116 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:31:09,116 INFO L146 ILogger]: Finished difference Result 264 states and 291 transitions. [2019-05-23 11:31:09,117 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-05-23 11:31:09,117 INFO L146 ILogger]: Start accepts. Automaton has 8 states. Word has length 67 [2019-05-23 11:31:09,117 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:31:09,118 INFO L146 ILogger]: With dead ends: 264 [2019-05-23 11:31:09,119 INFO L146 ILogger]: Without dead ends: 206 [2019-05-23 11:31:09,120 INFO L146 ILogger]: 0 DeclaredPredicates, 67 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:31:09,120 INFO L146 ILogger]: Start minimizeSevpa. Operand 206 states. [2019-05-23 11:31:09,156 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 206 to 144. [2019-05-23 11:31:09,157 INFO L146 ILogger]: Start removeUnreachable. Operand 144 states. [2019-05-23 11:31:09,162 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 144 states to 144 states and 159 transitions. [2019-05-23 11:31:09,163 INFO L146 ILogger]: Start accepts. Automaton has 144 states and 159 transitions. Word has length 67 [2019-05-23 11:31:09,163 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:31:09,163 INFO L146 ILogger]: Abstraction has 144 states and 159 transitions. [2019-05-23 11:31:09,163 INFO L146 ILogger]: Interpolant automaton has 8 states. [2019-05-23 11:31:09,163 INFO L146 ILogger]: Start isEmpty. Operand 144 states and 159 transitions. [2019-05-23 11:31:09,166 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 94 [2019-05-23 11:31:09,166 INFO L146 ILogger]: Found error trace [2019-05-23 11:31:09,166 INFO L146 ILogger]: trace histogram [12, 12, 12, 4, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 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 11:31:09,167 INFO L146 ILogger]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:31:09,167 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:31:09,167 INFO L146 ILogger]: Analyzing trace with hash -1207575068, now seen corresponding path program 5 times [2019-05-23 11:31:09,167 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:31:09,168 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:31:09,171 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:31:09,172 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:31:09,172 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:31:09,181 ERROR L146 ILogger]: Caught known exception: Unsupported non-linear arithmetic [2019-05-23 11:31:09,182 INFO L146 ILogger]: Advancing trace checker [2019-05-23 11:31:09,182 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-05-23 11:31:09,193 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1