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-examples/standard_running_false-unreach-call.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-7aa59a0 [2019-05-23 11:15:30,533 INFO L146 ILogger]: Resetting all preferences to default values... [2019-05-23 11:15:30,535 INFO L146 ILogger]: Resetting UltimateCore preferences to default values [2019-05-23 11:15:30,547 INFO L146 ILogger]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-05-23 11:15:30,548 INFO L146 ILogger]: Resetting Boogie Preprocessor preferences to default values [2019-05-23 11:15:30,549 INFO L146 ILogger]: Resetting Boogie Procedure Inliner preferences to default values [2019-05-23 11:15:30,550 INFO L146 ILogger]: Resetting Abstract Interpretation preferences to default values [2019-05-23 11:15:30,552 INFO L146 ILogger]: Resetting LassoRanker preferences to default values [2019-05-23 11:15:30,554 INFO L146 ILogger]: Resetting Reaching Definitions preferences to default values [2019-05-23 11:15:30,554 INFO L146 ILogger]: Resetting SyntaxChecker preferences to default values [2019-05-23 11:15:30,555 INFO L146 ILogger]: Büchi Program Product provides no preferences, ignoring... [2019-05-23 11:15:30,556 INFO L146 ILogger]: Resetting LTL2Aut preferences to default values [2019-05-23 11:15:30,557 INFO L146 ILogger]: Resetting PEA to Boogie preferences to default values [2019-05-23 11:15:30,558 INFO L146 ILogger]: Resetting BlockEncodingV2 preferences to default values [2019-05-23 11:15:30,559 INFO L146 ILogger]: Resetting ChcToBoogie preferences to default values [2019-05-23 11:15:30,560 INFO L146 ILogger]: Resetting AutomataScriptInterpreter preferences to default values [2019-05-23 11:15:30,561 INFO L146 ILogger]: Resetting BuchiAutomizer preferences to default values [2019-05-23 11:15:30,563 INFO L146 ILogger]: Resetting CACSL2BoogieTranslator preferences to default values [2019-05-23 11:15:30,565 INFO L146 ILogger]: Resetting CodeCheck preferences to default values [2019-05-23 11:15:30,566 INFO L146 ILogger]: Resetting InvariantSynthesis preferences to default values [2019-05-23 11:15:30,567 INFO L146 ILogger]: Resetting RCFGBuilder preferences to default values [2019-05-23 11:15:30,569 INFO L146 ILogger]: Resetting TraceAbstraction preferences to default values [2019-05-23 11:15:30,571 INFO L146 ILogger]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-05-23 11:15:30,571 INFO L146 ILogger]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-05-23 11:15:30,572 INFO L146 ILogger]: Resetting TreeAutomizer preferences to default values [2019-05-23 11:15:30,575 INFO L146 ILogger]: Resetting IcfgToChc preferences to default values [2019-05-23 11:15:30,575 INFO L146 ILogger]: Resetting IcfgTransformer preferences to default values [2019-05-23 11:15:30,577 INFO L146 ILogger]: ReqToTest provides no preferences, ignoring... [2019-05-23 11:15:30,578 INFO L146 ILogger]: Resetting Boogie Printer preferences to default values [2019-05-23 11:15:30,578 INFO L146 ILogger]: Resetting ChcSmtPrinter preferences to default values [2019-05-23 11:15:30,580 INFO L146 ILogger]: Resetting ReqPrinter preferences to default values [2019-05-23 11:15:30,581 INFO L146 ILogger]: Resetting Witness Printer preferences to default values [2019-05-23 11:15:30,583 INFO L146 ILogger]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-05-23 11:15:30,584 INFO L146 ILogger]: Resetting CDTParser preferences to default values [2019-05-23 11:15:30,584 INFO L146 ILogger]: AutomataScriptParser provides no preferences, ignoring... [2019-05-23 11:15:30,585 INFO L146 ILogger]: ReqParser provides no preferences, ignoring... [2019-05-23 11:15:30,585 INFO L146 ILogger]: Resetting SmtParser preferences to default values [2019-05-23 11:15:30,586 INFO L146 ILogger]: Resetting Witness Parser preferences to default values [2019-05-23 11:15:30,586 INFO L146 ILogger]: Finished resetting all preferences to default values... [2019-05-23 11:15:30,588 INFO L146 ILogger]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-05-23 11:15:30,616 INFO L146 ILogger]: Loading preferences was successful [2019-05-23 11:15:30,617 INFO L146 ILogger]: Preferences different from defaults after loading the file: [2019-05-23 11:15:30,618 INFO L146 ILogger]: Preferences of BlockEncodingV2 differ from their defaults: [2019-05-23 11:15:30,619 INFO L146 ILogger]: * Create parallel compositions if possible=false [2019-05-23 11:15:30,619 INFO L146 ILogger]: * Use SBE=true [2019-05-23 11:15:30,619 INFO L146 ILogger]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-05-23 11:15:30,619 INFO L146 ILogger]: * sizeof long=4 [2019-05-23 11:15:30,620 INFO L146 ILogger]: * Overapproximate operations on floating types=true [2019-05-23 11:15:30,620 INFO L146 ILogger]: * sizeof POINTER=4 [2019-05-23 11:15:30,620 INFO L146 ILogger]: * Check division by zero=IGNORE [2019-05-23 11:15:30,620 INFO L146 ILogger]: * Pointer to allocated memory at dereference=IGNORE [2019-05-23 11:15:30,620 INFO L146 ILogger]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-05-23 11:15:30,622 INFO L146 ILogger]: * Check array bounds for arrays that are off heap=IGNORE [2019-05-23 11:15:30,622 INFO L146 ILogger]: * sizeof long double=12 [2019-05-23 11:15:30,622 INFO L146 ILogger]: * Check if freed pointer was valid=false [2019-05-23 11:15:30,622 INFO L146 ILogger]: * Use constant arrays=true [2019-05-23 11:15:30,623 INFO L146 ILogger]: * Pointer base address is valid at dereference=IGNORE [2019-05-23 11:15:30,623 INFO L146 ILogger]: Preferences of RCFGBuilder differ from their defaults: [2019-05-23 11:15:30,623 INFO L146 ILogger]: * Size of a code block=SequenceOfStatements [2019-05-23 11:15:30,623 INFO L146 ILogger]: * To the following directory=./dump/ [2019-05-23 11:15:30,623 INFO L146 ILogger]: * SMT solver=External_DefaultMode [2019-05-23 11:15:30,624 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-05-23 11:15:30,624 INFO L146 ILogger]: Preferences of TraceAbstraction differ from their defaults: [2019-05-23 11:15:30,624 INFO L146 ILogger]: * Compute Interpolants along a Counterexample=FPandBP [2019-05-23 11:15:30,624 INFO L146 ILogger]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-05-23 11:15:30,624 INFO L146 ILogger]: * Trace refinement strategy=CAMEL [2019-05-23 11:15:30,625 INFO L146 ILogger]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-05-23 11:15:30,625 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-05-23 11:15:30,626 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 11:15:30,678 INFO L146 ILogger]: Repository-Root is: /tmp [2019-05-23 11:15:30,693 INFO L146 ILogger]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-05-23 11:15:30,697 INFO L146 ILogger]: [Toolchain 1]: Toolchain selected. [2019-05-23 11:15:30,699 INFO L146 ILogger]: Initializing CDTParser... [2019-05-23 11:15:30,699 INFO L146 ILogger]: CDTParser initialized [2019-05-23 11:15:30,700 INFO L146 ILogger]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/array-examples/standard_running_false-unreach-call.i [2019-05-23 11:15:30,760 INFO L146 ILogger]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/772bfd5e2/75d93636727141779589d90697580fc7/FLAG401271436 [2019-05-23 11:15:31,198 INFO L146 ILogger]: Found 1 translation units. [2019-05-23 11:15:31,199 INFO L146 ILogger]: Scanning /storage/repos/svcomp/c/array-examples/standard_running_false-unreach-call.i [2019-05-23 11:15:31,205 INFO L146 ILogger]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/772bfd5e2/75d93636727141779589d90697580fc7/FLAG401271436 [2019-05-23 11:15:31,570 INFO L146 ILogger]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/772bfd5e2/75d93636727141779589d90697580fc7 [2019-05-23 11:15:31,580 INFO L146 ILogger]: ####################### [Toolchain 1] ####################### [2019-05-23 11:15:31,582 INFO L146 ILogger]: Walking toolchain with 5 elements. [2019-05-23 11:15:31,583 INFO L146 ILogger]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-05-23 11:15:31,583 INFO L146 ILogger]: Initializing CACSL2BoogieTranslator... [2019-05-23 11:15:31,586 INFO L146 ILogger]: CACSL2BoogieTranslator initialized [2019-05-23 11:15:31,588 INFO L146 ILogger]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:15:31" (1/1) ... [2019-05-23 11:15:31,591 INFO L146 ILogger]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b80e9b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:15:31, skipping insertion in model container [2019-05-23 11:15:31,591 INFO L146 ILogger]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:15:31" (1/1) ... [2019-05-23 11:15:31,599 INFO L146 ILogger]: Starting translation in SV-COMP mode [2019-05-23 11:15:31,617 INFO L146 ILogger]: Built tables and reachable declarations [2019-05-23 11:15:31,808 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:15:31,813 INFO L146 ILogger]: Completed pre-run [2019-05-23 11:15:31,833 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:15:31,850 INFO L146 ILogger]: Completed translation [2019-05-23 11:15:31,850 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:15:31 WrapperNode [2019-05-23 11:15:31,851 INFO L146 ILogger]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-05-23 11:15:31,851 INFO L146 ILogger]: ------------------------Boogie Procedure Inliner---------------------------- [2019-05-23 11:15:31,852 INFO L146 ILogger]: Initializing Boogie Procedure Inliner... [2019-05-23 11:15:31,852 INFO L146 ILogger]: Boogie Procedure Inliner initialized [2019-05-23 11:15:31,859 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:15:31" (1/1) ... [2019-05-23 11:15:31,866 INFO L146 ILogger]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:15:31" (1/1) ... [2019-05-23 11:15:31,888 INFO L146 ILogger]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-05-23 11:15:31,889 INFO L146 ILogger]: ------------------------Boogie Preprocessor---------------------------- [2019-05-23 11:15:31,889 INFO L146 ILogger]: Initializing Boogie Preprocessor... [2019-05-23 11:15:31,889 INFO L146 ILogger]: Boogie Preprocessor initialized [2019-05-23 11:15:31,898 INFO L146 ILogger]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:15:31" (1/1) ... [2019-05-23 11:15:31,898 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:15:31" (1/1) ... [2019-05-23 11:15:31,900 INFO L146 ILogger]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:15:31" (1/1) ... [2019-05-23 11:15:31,900 INFO L146 ILogger]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:15:31" (1/1) ... [2019-05-23 11:15:31,906 INFO L146 ILogger]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:15:31" (1/1) ... [2019-05-23 11:15:31,912 INFO L146 ILogger]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:15:31" (1/1) ... [2019-05-23 11:15:31,913 INFO L146 ILogger]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:15:31" (1/1) ... [2019-05-23 11:15:31,915 INFO L146 ILogger]: ------------------------ END Boogie Preprocessor---------------------------- [2019-05-23 11:15:31,916 INFO L146 ILogger]: ------------------------RCFGBuilder---------------------------- [2019-05-23 11:15:31,916 INFO L146 ILogger]: Initializing RCFGBuilder... [2019-05-23 11:15:32,001 INFO L146 ILogger]: RCFGBuilder initialized [2019-05-23 11:15:32,006 INFO L146 ILogger]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:15:31" (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 11:15:32,072 INFO L146 ILogger]: Found specification of procedure write~int [2019-05-23 11:15:32,072 INFO L146 ILogger]: Found specification of procedure ULTIMATE.start [2019-05-23 11:15:32,072 INFO L146 ILogger]: Found implementation of procedure ULTIMATE.start [2019-05-23 11:15:32,072 INFO L146 ILogger]: Found specification of procedure read~int [2019-05-23 11:15:32,073 INFO L146 ILogger]: Found specification of procedure #Ultimate.allocOnStack [2019-05-23 11:15:32,073 INFO L146 ILogger]: Found specification of procedure ULTIMATE.dealloc [2019-05-23 11:15:32,529 INFO L146 ILogger]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-05-23 11:15:32,530 INFO L146 ILogger]: Removed 8 assume(true) statements. [2019-05-23 11:15:32,531 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:15:32 BoogieIcfgContainer [2019-05-23 11:15:32,531 INFO L146 ILogger]: ------------------------ END RCFGBuilder---------------------------- [2019-05-23 11:15:32,532 INFO L146 ILogger]: ------------------------TraceAbstraction---------------------------- [2019-05-23 11:15:32,532 INFO L146 ILogger]: Initializing TraceAbstraction... [2019-05-23 11:15:32,535 INFO L146 ILogger]: TraceAbstraction initialized [2019-05-23 11:15:32,536 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.05 11:15:31" (1/3) ... [2019-05-23 11:15:32,536 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1867cc94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:15:32, skipping insertion in model container [2019-05-23 11:15:32,537 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:15:31" (2/3) ... [2019-05-23 11:15:32,537 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1867cc94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:15:32, skipping insertion in model container [2019-05-23 11:15:32,537 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:15:32" (3/3) ... [2019-05-23 11:15:32,539 INFO L146 ILogger]: Analyzing ICFG standard_running_false-unreach-call.i [2019-05-23 11:15:32,548 INFO L146 ILogger]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-05-23 11:15:32,556 INFO L146 ILogger]: Appying trace abstraction to program that has 1 error locations. [2019-05-23 11:15:32,574 INFO L146 ILogger]: Starting to check reachability of 1 error locations. [2019-05-23 11:15:32,606 INFO L146 ILogger]: Using default assertion order modulation [2019-05-23 11:15:32,607 INFO L146 ILogger]: Interprodecural is true [2019-05-23 11:15:32,607 INFO L146 ILogger]: Hoare is true [2019-05-23 11:15:32,607 INFO L146 ILogger]: Compute interpolants for FPandBP [2019-05-23 11:15:32,607 INFO L146 ILogger]: Backedges is STRAIGHT_LINE [2019-05-23 11:15:32,608 INFO L146 ILogger]: Determinization is PREDICATE_ABSTRACTION [2019-05-23 11:15:32,608 INFO L146 ILogger]: Difference is false [2019-05-23 11:15:32,608 INFO L146 ILogger]: Minimize is MINIMIZE_SEVPA [2019-05-23 11:15:32,608 INFO L146 ILogger]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-05-23 11:15:32,623 INFO L146 ILogger]: Start isEmpty. Operand 59 states. [2019-05-23 11:15:32,629 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 17 [2019-05-23 11:15:32,630 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:32,630 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:15:32,632 INFO L146 ILogger]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:32,637 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:32,637 INFO L146 ILogger]: Analyzing trace with hash -748285388, now seen corresponding path program 1 times [2019-05-23 11:15:32,639 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:32,639 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:32,681 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:32,682 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:15:32,682 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:32,717 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:32,756 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 11:15:32,759 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:15:32,760 INFO L146 ILogger]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-05-23 11:15:32,763 INFO L146 ILogger]: Interpolant automaton has 2 states [2019-05-23 11:15:32,777 INFO L146 ILogger]: Constructing interpolant automaton starting with 2 interpolants. [2019-05-23 11:15:32,778 INFO L146 ILogger]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-05-23 11:15:32,780 INFO L146 ILogger]: Start difference. First operand 59 states. Second operand 2 states. [2019-05-23 11:15:32,802 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:32,802 INFO L146 ILogger]: Finished difference Result 103 states and 118 transitions. [2019-05-23 11:15:32,802 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-05-23 11:15:32,804 INFO L146 ILogger]: Start accepts. Automaton has 2 states. Word has length 16 [2019-05-23 11:15:32,804 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:32,815 INFO L146 ILogger]: With dead ends: 103 [2019-05-23 11:15:32,815 INFO L146 ILogger]: Without dead ends: 51 [2019-05-23 11:15:32,819 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 11:15:32,833 INFO L146 ILogger]: Start minimizeSevpa. Operand 51 states. [2019-05-23 11:15:32,848 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 51 to 51. [2019-05-23 11:15:32,849 INFO L146 ILogger]: Start removeUnreachable. Operand 51 states. [2019-05-23 11:15:32,851 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 51 states to 51 states and 57 transitions. [2019-05-23 11:15:32,852 INFO L146 ILogger]: Start accepts. Automaton has 51 states and 57 transitions. Word has length 16 [2019-05-23 11:15:32,853 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:32,853 INFO L146 ILogger]: Abstraction has 51 states and 57 transitions. [2019-05-23 11:15:32,853 INFO L146 ILogger]: Interpolant automaton has 2 states. [2019-05-23 11:15:32,853 INFO L146 ILogger]: Start isEmpty. Operand 51 states and 57 transitions. [2019-05-23 11:15:32,854 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 17 [2019-05-23 11:15:32,854 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:32,854 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:15:32,855 INFO L146 ILogger]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:32,855 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:32,855 INFO L146 ILogger]: Analyzing trace with hash -1893785052, now seen corresponding path program 1 times [2019-05-23 11:15:32,856 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:32,856 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:32,857 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:32,857 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:15:32,857 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:32,870 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:32,926 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 11:15:32,926 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:15:32,926 INFO L146 ILogger]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-05-23 11:15:32,928 INFO L146 ILogger]: Interpolant automaton has 3 states [2019-05-23 11:15:32,928 INFO L146 ILogger]: Constructing interpolant automaton starting with 3 interpolants. [2019-05-23 11:15:32,929 INFO L146 ILogger]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-05-23 11:15:32,929 INFO L146 ILogger]: Start difference. First operand 51 states and 57 transitions. Second operand 3 states. [2019-05-23 11:15:33,091 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:33,092 INFO L146 ILogger]: Finished difference Result 123 states and 140 transitions. [2019-05-23 11:15:33,093 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-05-23 11:15:33,094 INFO L146 ILogger]: Start accepts. Automaton has 3 states. Word has length 16 [2019-05-23 11:15:33,094 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:33,096 INFO L146 ILogger]: With dead ends: 123 [2019-05-23 11:15:33,097 INFO L146 ILogger]: Without dead ends: 87 [2019-05-23 11:15:33,098 INFO L146 ILogger]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-05-23 11:15:33,099 INFO L146 ILogger]: Start minimizeSevpa. Operand 87 states. [2019-05-23 11:15:33,105 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 87 to 53. [2019-05-23 11:15:33,106 INFO L146 ILogger]: Start removeUnreachable. Operand 53 states. [2019-05-23 11:15:33,107 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 53 states to 53 states and 59 transitions. [2019-05-23 11:15:33,107 INFO L146 ILogger]: Start accepts. Automaton has 53 states and 59 transitions. Word has length 16 [2019-05-23 11:15:33,107 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:33,108 INFO L146 ILogger]: Abstraction has 53 states and 59 transitions. [2019-05-23 11:15:33,108 INFO L146 ILogger]: Interpolant automaton has 3 states. [2019-05-23 11:15:33,108 INFO L146 ILogger]: Start isEmpty. Operand 53 states and 59 transitions. [2019-05-23 11:15:33,109 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 39 [2019-05-23 11:15:33,109 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:33,110 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] [2019-05-23 11:15:33,110 INFO L146 ILogger]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:33,110 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:33,111 INFO L146 ILogger]: Analyzing trace with hash 1754040756, now seen corresponding path program 1 times [2019-05-23 11:15:33,111 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:33,111 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:33,112 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:33,112 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:15:33,113 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:33,134 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:33,525 INFO L146 ILogger]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-05-23 11:15:33,525 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:15:33,526 INFO L146 ILogger]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-05-23 11:15:33,526 INFO L146 ILogger]: Interpolant automaton has 7 states [2019-05-23 11:15:33,526 INFO L146 ILogger]: Constructing interpolant automaton starting with 7 interpolants. [2019-05-23 11:15:33,527 INFO L146 ILogger]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-05-23 11:15:33,527 INFO L146 ILogger]: Start difference. First operand 53 states and 59 transitions. Second operand 7 states. [2019-05-23 11:15:33,987 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:33,988 INFO L146 ILogger]: Finished difference Result 109 states and 122 transitions. [2019-05-23 11:15:33,991 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-05-23 11:15:33,991 INFO L146 ILogger]: Start accepts. Automaton has 7 states. Word has length 38 [2019-05-23 11:15:33,991 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:33,992 INFO L146 ILogger]: With dead ends: 109 [2019-05-23 11:15:33,992 INFO L146 ILogger]: Without dead ends: 75 [2019-05-23 11:15:33,993 INFO L146 ILogger]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2019-05-23 11:15:33,994 INFO L146 ILogger]: Start minimizeSevpa. Operand 75 states. [2019-05-23 11:15:33,999 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 75 to 64. [2019-05-23 11:15:34,000 INFO L146 ILogger]: Start removeUnreachable. Operand 64 states. [2019-05-23 11:15:34,001 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 64 states to 64 states and 71 transitions. [2019-05-23 11:15:34,001 INFO L146 ILogger]: Start accepts. Automaton has 64 states and 71 transitions. Word has length 38 [2019-05-23 11:15:34,002 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:34,002 INFO L146 ILogger]: Abstraction has 64 states and 71 transitions. [2019-05-23 11:15:34,002 INFO L146 ILogger]: Interpolant automaton has 7 states. [2019-05-23 11:15:34,002 INFO L146 ILogger]: Start isEmpty. Operand 64 states and 71 transitions. [2019-05-23 11:15:34,003 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 41 [2019-05-23 11:15:34,004 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:34,004 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 11:15:34,004 INFO L146 ILogger]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:34,004 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:34,005 INFO L146 ILogger]: Analyzing trace with hash -2101473673, now seen corresponding path program 1 times [2019-05-23 11:15:34,005 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:34,005 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:34,006 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:34,006 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:15:34,007 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:34,024 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:34,119 INFO L146 ILogger]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-05-23 11:15:34,119 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:15:34,120 INFO L146 ILogger]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-05-23 11:15:34,120 INFO L146 ILogger]: Interpolant automaton has 5 states [2019-05-23 11:15:34,120 INFO L146 ILogger]: Constructing interpolant automaton starting with 5 interpolants. [2019-05-23 11:15:34,121 INFO L146 ILogger]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-05-23 11:15:34,121 INFO L146 ILogger]: Start difference. First operand 64 states and 71 transitions. Second operand 5 states. [2019-05-23 11:15:34,186 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:34,187 INFO L146 ILogger]: Finished difference Result 109 states and 121 transitions. [2019-05-23 11:15:34,187 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-05-23 11:15:34,187 INFO L146 ILogger]: Start accepts. Automaton has 5 states. Word has length 40 [2019-05-23 11:15:34,188 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:34,189 INFO L146 ILogger]: With dead ends: 109 [2019-05-23 11:15:34,189 INFO L146 ILogger]: Without dead ends: 103 [2019-05-23 11:15:34,189 INFO L146 ILogger]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-05-23 11:15:34,190 INFO L146 ILogger]: Start minimizeSevpa. Operand 103 states. [2019-05-23 11:15:34,196 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 103 to 90. [2019-05-23 11:15:34,196 INFO L146 ILogger]: Start removeUnreachable. Operand 90 states. [2019-05-23 11:15:34,198 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 90 states to 90 states and 102 transitions. [2019-05-23 11:15:34,198 INFO L146 ILogger]: Start accepts. Automaton has 90 states and 102 transitions. Word has length 40 [2019-05-23 11:15:34,198 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:34,198 INFO L146 ILogger]: Abstraction has 90 states and 102 transitions. [2019-05-23 11:15:34,199 INFO L146 ILogger]: Interpolant automaton has 5 states. [2019-05-23 11:15:34,199 INFO L146 ILogger]: Start isEmpty. Operand 90 states and 102 transitions. [2019-05-23 11:15:34,200 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 42 [2019-05-23 11:15:34,200 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:34,201 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] [2019-05-23 11:15:34,201 INFO L146 ILogger]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:34,201 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:34,201 INFO L146 ILogger]: Analyzing trace with hash 907582870, now seen corresponding path program 1 times [2019-05-23 11:15:34,202 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:34,202 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:34,203 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:34,203 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:15:34,203 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:34,214 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:34,241 INFO L146 ILogger]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-05-23 11:15:34,242 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:15:34,242 INFO L146 ILogger]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-05-23 11:15:34,243 INFO L146 ILogger]: Interpolant automaton has 3 states [2019-05-23 11:15:34,243 INFO L146 ILogger]: Constructing interpolant automaton starting with 3 interpolants. [2019-05-23 11:15:34,243 INFO L146 ILogger]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-05-23 11:15:34,243 INFO L146 ILogger]: Start difference. First operand 90 states and 102 transitions. Second operand 3 states. [2019-05-23 11:15:34,272 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:34,272 INFO L146 ILogger]: Finished difference Result 131 states and 148 transitions. [2019-05-23 11:15:34,275 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-05-23 11:15:34,286 INFO L146 ILogger]: Start accepts. Automaton has 3 states. Word has length 41 [2019-05-23 11:15:34,286 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:34,287 INFO L146 ILogger]: With dead ends: 131 [2019-05-23 11:15:34,287 INFO L146 ILogger]: Without dead ends: 86 [2019-05-23 11:15:34,288 INFO L146 ILogger]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-05-23 11:15:34,288 INFO L146 ILogger]: Start minimizeSevpa. Operand 86 states. [2019-05-23 11:15:34,293 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 86 to 86. [2019-05-23 11:15:34,293 INFO L146 ILogger]: Start removeUnreachable. Operand 86 states. [2019-05-23 11:15:34,294 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 86 states to 86 states and 96 transitions. [2019-05-23 11:15:34,294 INFO L146 ILogger]: Start accepts. Automaton has 86 states and 96 transitions. Word has length 41 [2019-05-23 11:15:34,294 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:34,295 INFO L146 ILogger]: Abstraction has 86 states and 96 transitions. [2019-05-23 11:15:34,295 INFO L146 ILogger]: Interpolant automaton has 3 states. [2019-05-23 11:15:34,295 INFO L146 ILogger]: Start isEmpty. Operand 86 states and 96 transitions. [2019-05-23 11:15:34,296 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 42 [2019-05-23 11:15:34,296 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:34,296 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] [2019-05-23 11:15:34,297 INFO L146 ILogger]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:34,297 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:34,297 INFO L146 ILogger]: Analyzing trace with hash -460055463, now seen corresponding path program 1 times [2019-05-23 11:15:34,297 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:34,297 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:34,298 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:34,299 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:15:34,299 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:34,314 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:34,379 INFO L146 ILogger]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-05-23 11:15:34,380 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:34,380 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 -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:15:34,398 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:15:34,426 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:34,427 INFO L146 ILogger]: Trace formula consists of 73 conjuncts, 3 conjunts are in the unsatisfiable core [2019-05-23 11:15:34,433 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:15:34,553 INFO L146 ILogger]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-05-23 11:15:34,592 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:15:34,592 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2019-05-23 11:15:34,592 INFO L146 ILogger]: Interpolant automaton has 5 states [2019-05-23 11:15:34,593 INFO L146 ILogger]: Constructing interpolant automaton starting with 5 interpolants. [2019-05-23 11:15:34,593 INFO L146 ILogger]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-05-23 11:15:34,593 INFO L146 ILogger]: Start difference. First operand 86 states and 96 transitions. Second operand 5 states. [2019-05-23 11:15:34,878 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:34,878 INFO L146 ILogger]: Finished difference Result 278 states and 314 transitions. [2019-05-23 11:15:34,879 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-05-23 11:15:34,879 INFO L146 ILogger]: Start accepts. Automaton has 5 states. Word has length 41 [2019-05-23 11:15:34,880 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:34,882 INFO L146 ILogger]: With dead ends: 278 [2019-05-23 11:15:34,882 INFO L146 ILogger]: Without dead ends: 208 [2019-05-23 11:15:34,883 INFO L146 ILogger]: 0 DeclaredPredicates, 44 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-05-23 11:15:34,884 INFO L146 ILogger]: Start minimizeSevpa. Operand 208 states. [2019-05-23 11:15:34,893 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 208 to 136. [2019-05-23 11:15:34,893 INFO L146 ILogger]: Start removeUnreachable. Operand 136 states. [2019-05-23 11:15:34,894 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 136 states to 136 states and 153 transitions. [2019-05-23 11:15:34,894 INFO L146 ILogger]: Start accepts. Automaton has 136 states and 153 transitions. Word has length 41 [2019-05-23 11:15:34,895 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:34,895 INFO L146 ILogger]: Abstraction has 136 states and 153 transitions. [2019-05-23 11:15:34,895 INFO L146 ILogger]: Interpolant automaton has 5 states. [2019-05-23 11:15:34,895 INFO L146 ILogger]: Start isEmpty. Operand 136 states and 153 transitions. [2019-05-23 11:15:34,897 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 66 [2019-05-23 11:15:34,898 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:34,898 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-05-23 11:15:34,898 INFO L146 ILogger]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:34,898 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:34,899 INFO L146 ILogger]: Analyzing trace with hash -1170482906, now seen corresponding path program 1 times [2019-05-23 11:15:34,899 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:34,899 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:34,900 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:34,900 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:15:34,900 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:34,918 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:35,029 INFO L146 ILogger]: Checked inductivity of 25 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2019-05-23 11:15:35,029 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:35,029 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 -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:15:35,045 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:15:35,076 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:35,077 INFO L146 ILogger]: Trace formula consists of 103 conjuncts, 4 conjunts are in the unsatisfiable core [2019-05-23 11:15:35,080 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:15:35,110 INFO L146 ILogger]: Checked inductivity of 25 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2019-05-23 11:15:35,129 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:15:35,129 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2019-05-23 11:15:35,129 INFO L146 ILogger]: Interpolant automaton has 6 states [2019-05-23 11:15:35,130 INFO L146 ILogger]: Constructing interpolant automaton starting with 6 interpolants. [2019-05-23 11:15:35,130 INFO L146 ILogger]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-05-23 11:15:35,130 INFO L146 ILogger]: Start difference. First operand 136 states and 153 transitions. Second operand 6 states. [2019-05-23 11:15:35,605 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:35,605 INFO L146 ILogger]: Finished difference Result 390 states and 441 transitions. [2019-05-23 11:15:35,606 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-05-23 11:15:35,606 INFO L146 ILogger]: Start accepts. Automaton has 6 states. Word has length 65 [2019-05-23 11:15:35,606 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:35,607 INFO L146 ILogger]: With dead ends: 390 [2019-05-23 11:15:35,608 INFO L146 ILogger]: Without dead ends: 278 [2019-05-23 11:15:35,609 INFO L146 ILogger]: 0 DeclaredPredicates, 69 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-05-23 11:15:35,610 INFO L146 ILogger]: Start minimizeSevpa. Operand 278 states. [2019-05-23 11:15:35,621 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 278 to 206. [2019-05-23 11:15:35,622 INFO L146 ILogger]: Start removeUnreachable. Operand 206 states. [2019-05-23 11:15:35,623 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 206 states to 206 states and 232 transitions. [2019-05-23 11:15:35,623 INFO L146 ILogger]: Start accepts. Automaton has 206 states and 232 transitions. Word has length 65 [2019-05-23 11:15:35,623 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:35,624 INFO L146 ILogger]: Abstraction has 206 states and 232 transitions. [2019-05-23 11:15:35,624 INFO L146 ILogger]: Interpolant automaton has 6 states. [2019-05-23 11:15:35,624 INFO L146 ILogger]: Start isEmpty. Operand 206 states and 232 transitions. [2019-05-23 11:15:35,628 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 90 [2019-05-23 11:15:35,629 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:35,629 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2019-05-23 11:15:35,629 INFO L146 ILogger]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:35,629 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:35,630 INFO L146 ILogger]: Analyzing trace with hash -271416141, now seen corresponding path program 2 times [2019-05-23 11:15:35,630 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:35,630 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:35,631 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:35,631 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:15:35,631 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:35,673 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:35,786 INFO L146 ILogger]: Checked inductivity of 72 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2019-05-23 11:15:35,786 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:35,786 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 -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:15:35,795 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:15:35,832 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:15:35,833 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:35,833 INFO L146 ILogger]: Trace formula consists of 133 conjuncts, 5 conjunts are in the unsatisfiable core [2019-05-23 11:15:35,837 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:15:35,874 INFO L146 ILogger]: Checked inductivity of 72 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2019-05-23 11:15:35,893 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:15:35,894 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2019-05-23 11:15:35,894 INFO L146 ILogger]: Interpolant automaton has 7 states [2019-05-23 11:15:35,894 INFO L146 ILogger]: Constructing interpolant automaton starting with 7 interpolants. [2019-05-23 11:15:35,895 INFO L146 ILogger]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-05-23 11:15:35,895 INFO L146 ILogger]: Start difference. First operand 206 states and 232 transitions. Second operand 7 states. [2019-05-23 11:15:36,137 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:36,138 INFO L146 ILogger]: Finished difference Result 522 states and 590 transitions. [2019-05-23 11:15:36,139 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-05-23 11:15:36,139 INFO L146 ILogger]: Start accepts. Automaton has 7 states. Word has length 89 [2019-05-23 11:15:36,140 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:36,143 INFO L146 ILogger]: With dead ends: 522 [2019-05-23 11:15:36,143 INFO L146 ILogger]: Without dead ends: 348 [2019-05-23 11:15:36,144 INFO L146 ILogger]: 0 DeclaredPredicates, 94 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-05-23 11:15:36,145 INFO L146 ILogger]: Start minimizeSevpa. Operand 348 states. [2019-05-23 11:15:36,155 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 348 to 276. [2019-05-23 11:15:36,155 INFO L146 ILogger]: Start removeUnreachable. Operand 276 states. [2019-05-23 11:15:36,157 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 276 states to 276 states and 311 transitions. [2019-05-23 11:15:36,157 INFO L146 ILogger]: Start accepts. Automaton has 276 states and 311 transitions. Word has length 89 [2019-05-23 11:15:36,157 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:36,157 INFO L146 ILogger]: Abstraction has 276 states and 311 transitions. [2019-05-23 11:15:36,158 INFO L146 ILogger]: Interpolant automaton has 7 states. [2019-05-23 11:15:36,158 INFO L146 ILogger]: Start isEmpty. Operand 276 states and 311 transitions. [2019-05-23 11:15:36,160 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 114 [2019-05-23 11:15:36,160 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:36,161 INFO L146 ILogger]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:15:36,161 INFO L146 ILogger]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:36,161 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:36,162 INFO L146 ILogger]: Analyzing trace with hash 805957376, now seen corresponding path program 3 times [2019-05-23 11:15:36,162 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:36,162 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:36,163 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:36,163 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:15:36,163 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:36,212 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:36,637 INFO L146 ILogger]: Checked inductivity of 143 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2019-05-23 11:15:36,637 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:36,637 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 -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:15:36,659 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:15:36,715 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-05-23 11:15:36,715 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:36,716 INFO L146 ILogger]: Trace formula consists of 103 conjuncts, 11 conjunts are in the unsatisfiable core [2019-05-23 11:15:36,721 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:15:36,892 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2019-05-23 11:15:36,893 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:15:36,977 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:15:36,978 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:15:36,978 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:19, output treesize:15 [2019-05-23 11:15:37,304 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:15:37,305 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 23 [2019-05-23 11:15:37,305 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2019-05-23 11:15:37,325 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:15:37,330 INFO L146 ILogger]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:15:37,331 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 4 variables, input treesize:32, output treesize:14 [2019-05-23 11:15:37,848 INFO L146 ILogger]: Checked inductivity of 143 backedges. 52 proven. 13 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2019-05-23 11:15:37,867 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:15:37,867 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 10] total 15 [2019-05-23 11:15:37,868 INFO L146 ILogger]: Interpolant automaton has 15 states [2019-05-23 11:15:37,868 INFO L146 ILogger]: Constructing interpolant automaton starting with 15 interpolants. [2019-05-23 11:15:37,870 INFO L146 ILogger]: CoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2019-05-23 11:15:37,870 INFO L146 ILogger]: Start difference. First operand 276 states and 311 transitions. Second operand 15 states. [2019-05-23 11:15:39,177 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:39,178 INFO L146 ILogger]: Finished difference Result 1208 states and 1377 transitions. [2019-05-23 11:15:39,178 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2019-05-23 11:15:39,178 INFO L146 ILogger]: Start accepts. Automaton has 15 states. Word has length 113 [2019-05-23 11:15:39,179 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:39,186 INFO L146 ILogger]: With dead ends: 1208 [2019-05-23 11:15:39,186 INFO L146 ILogger]: Without dead ends: 972 [2019-05-23 11:15:39,188 INFO L146 ILogger]: 0 DeclaredPredicates, 147 GetRequests, 111 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 272 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=406, Invalid=926, Unknown=0, NotChecked=0, Total=1332 [2019-05-23 11:15:39,189 INFO L146 ILogger]: Start minimizeSevpa. Operand 972 states. [2019-05-23 11:15:39,208 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 972 to 885. [2019-05-23 11:15:39,209 INFO L146 ILogger]: Start removeUnreachable. Operand 885 states. [2019-05-23 11:15:39,212 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 885 states to 885 states and 1002 transitions. [2019-05-23 11:15:39,212 INFO L146 ILogger]: Start accepts. Automaton has 885 states and 1002 transitions. Word has length 113 [2019-05-23 11:15:39,212 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:39,213 INFO L146 ILogger]: Abstraction has 885 states and 1002 transitions. [2019-05-23 11:15:39,213 INFO L146 ILogger]: Interpolant automaton has 15 states. [2019-05-23 11:15:39,213 INFO L146 ILogger]: Start isEmpty. Operand 885 states and 1002 transitions. [2019-05-23 11:15:39,217 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 186 [2019-05-23 11:15:39,218 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:39,218 INFO L146 ILogger]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 1, 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 11:15:39,218 INFO L146 ILogger]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:39,219 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:39,219 INFO L146 ILogger]: Analyzing trace with hash 91639684, now seen corresponding path program 1 times [2019-05-23 11:15:39,220 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:39,220 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:39,221 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:39,221 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:15:39,221 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:39,249 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:39,403 INFO L146 ILogger]: Checked inductivity of 488 backedges. 0 proven. 133 refuted. 0 times theorem prover too weak. 355 trivial. 0 not checked. [2019-05-23 11:15:39,403 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:39,403 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 -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:15:39,414 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:15:39,454 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:39,455 INFO L146 ILogger]: Trace formula consists of 253 conjuncts, 9 conjunts are in the unsatisfiable core [2019-05-23 11:15:39,461 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:15:39,527 INFO L146 ILogger]: Checked inductivity of 488 backedges. 0 proven. 133 refuted. 0 times theorem prover too weak. 355 trivial. 0 not checked. [2019-05-23 11:15:39,547 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:15:39,547 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2019-05-23 11:15:39,548 INFO L146 ILogger]: Interpolant automaton has 11 states [2019-05-23 11:15:39,548 INFO L146 ILogger]: Constructing interpolant automaton starting with 11 interpolants. [2019-05-23 11:15:39,548 INFO L146 ILogger]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2019-05-23 11:15:39,549 INFO L146 ILogger]: Start difference. First operand 885 states and 1002 transitions. Second operand 11 states. [2019-05-23 11:15:40,477 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:40,477 INFO L146 ILogger]: Finished difference Result 2023 states and 2293 transitions. [2019-05-23 11:15:40,478 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-05-23 11:15:40,478 INFO L146 ILogger]: Start accepts. Automaton has 11 states. Word has length 185 [2019-05-23 11:15:40,478 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:40,485 INFO L146 ILogger]: With dead ends: 2023 [2019-05-23 11:15:40,485 INFO L146 ILogger]: Without dead ends: 1204 [2019-05-23 11:15:40,487 INFO L146 ILogger]: 0 DeclaredPredicates, 194 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2019-05-23 11:15:40,488 INFO L146 ILogger]: Start minimizeSevpa. Operand 1204 states. [2019-05-23 11:15:40,510 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 1204 to 1017. [2019-05-23 11:15:40,511 INFO L146 ILogger]: Start removeUnreachable. Operand 1017 states. [2019-05-23 11:15:40,514 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 1017 states to 1017 states and 1151 transitions. [2019-05-23 11:15:40,514 INFO L146 ILogger]: Start accepts. Automaton has 1017 states and 1151 transitions. Word has length 185 [2019-05-23 11:15:40,514 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:40,514 INFO L146 ILogger]: Abstraction has 1017 states and 1151 transitions. [2019-05-23 11:15:40,514 INFO L146 ILogger]: Interpolant automaton has 11 states. [2019-05-23 11:15:40,515 INFO L146 ILogger]: Start isEmpty. Operand 1017 states and 1151 transitions. [2019-05-23 11:15:40,518 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 210 [2019-05-23 11:15:40,519 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:40,519 INFO L146 ILogger]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 1, 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 11:15:40,519 INFO L146 ILogger]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:40,519 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:40,520 INFO L146 ILogger]: Analyzing trace with hash 1704121553, now seen corresponding path program 2 times [2019-05-23 11:15:40,520 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:40,520 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:40,521 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:40,521 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:15:40,521 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:40,581 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:40,817 INFO L146 ILogger]: Checked inductivity of 653 backedges. 0 proven. 176 refuted. 0 times theorem prover too weak. 477 trivial. 0 not checked. [2019-05-23 11:15:40,818 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:40,818 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 -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:15:40,827 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:15:40,920 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:15:40,920 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:40,921 INFO L146 ILogger]: Trace formula consists of 283 conjuncts, 10 conjunts are in the unsatisfiable core [2019-05-23 11:15:40,926 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:15:40,998 INFO L146 ILogger]: Checked inductivity of 653 backedges. 0 proven. 176 refuted. 0 times theorem prover too weak. 477 trivial. 0 not checked. [2019-05-23 11:15:41,027 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:15:41,027 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2019-05-23 11:15:41,028 INFO L146 ILogger]: Interpolant automaton has 12 states [2019-05-23 11:15:41,028 INFO L146 ILogger]: Constructing interpolant automaton starting with 12 interpolants. [2019-05-23 11:15:41,028 INFO L146 ILogger]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2019-05-23 11:15:41,028 INFO L146 ILogger]: Start difference. First operand 1017 states and 1151 transitions. Second operand 12 states. [2019-05-23 11:15:41,760 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:41,761 INFO L146 ILogger]: Finished difference Result 2279 states and 2582 transitions. [2019-05-23 11:15:41,761 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-05-23 11:15:41,761 INFO L146 ILogger]: Start accepts. Automaton has 12 states. Word has length 209 [2019-05-23 11:15:41,762 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:41,768 INFO L146 ILogger]: With dead ends: 2279 [2019-05-23 11:15:41,769 INFO L146 ILogger]: Without dead ends: 1336 [2019-05-23 11:15:41,770 INFO L146 ILogger]: 0 DeclaredPredicates, 219 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2019-05-23 11:15:41,772 INFO L146 ILogger]: Start minimizeSevpa. Operand 1336 states. [2019-05-23 11:15:41,793 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 1336 to 1149. [2019-05-23 11:15:41,793 INFO L146 ILogger]: Start removeUnreachable. Operand 1149 states. [2019-05-23 11:15:41,796 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 1149 states to 1149 states and 1300 transitions. [2019-05-23 11:15:41,796 INFO L146 ILogger]: Start accepts. Automaton has 1149 states and 1300 transitions. Word has length 209 [2019-05-23 11:15:41,796 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:41,797 INFO L146 ILogger]: Abstraction has 1149 states and 1300 transitions. [2019-05-23 11:15:41,797 INFO L146 ILogger]: Interpolant automaton has 12 states. [2019-05-23 11:15:41,797 INFO L146 ILogger]: Start isEmpty. Operand 1149 states and 1300 transitions. [2019-05-23 11:15:41,801 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 234 [2019-05-23 11:15:41,801 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:41,801 INFO L146 ILogger]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 1, 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 11:15:41,802 INFO L146 ILogger]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:41,802 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:41,802 INFO L146 ILogger]: Analyzing trace with hash -815978274, now seen corresponding path program 3 times [2019-05-23 11:15:41,802 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:41,802 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:41,803 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:41,803 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:15:41,804 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:41,828 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:42,009 INFO L146 ILogger]: Checked inductivity of 842 backedges. 0 proven. 225 refuted. 0 times theorem prover too weak. 617 trivial. 0 not checked. [2019-05-23 11:15:42,009 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:42,009 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 -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:15:42,021 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:15:42,074 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-05-23 11:15:42,074 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:42,075 INFO L146 ILogger]: Trace formula consists of 103 conjuncts, 11 conjunts are in the unsatisfiable core [2019-05-23 11:15:42,079 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:15:42,123 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2019-05-23 11:15:42,124 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:15:42,132 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:15:42,132 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:15:42,132 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:19, output treesize:15 [2019-05-23 11:15:42,419 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:15:42,420 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 23 [2019-05-23 11:15:42,420 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2019-05-23 11:15:42,481 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:15:42,482 INFO L146 ILogger]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:15:42,482 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 4 variables, input treesize:32, output treesize:14 [2019-05-23 11:15:42,811 INFO L146 ILogger]: Checked inductivity of 842 backedges. 73 proven. 81 refuted. 0 times theorem prover too weak. 688 trivial. 0 not checked. [2019-05-23 11:15:42,831 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:15:42,831 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 20 [2019-05-23 11:15:42,832 INFO L146 ILogger]: Interpolant automaton has 20 states [2019-05-23 11:15:42,832 INFO L146 ILogger]: Constructing interpolant automaton starting with 20 interpolants. [2019-05-23 11:15:42,833 INFO L146 ILogger]: CoverageRelationStatistics Valid=132, Invalid=248, Unknown=0, NotChecked=0, Total=380 [2019-05-23 11:15:42,833 INFO L146 ILogger]: Start difference. First operand 1149 states and 1300 transitions. Second operand 20 states. [2019-05-23 11:15:44,983 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:44,983 INFO L146 ILogger]: Finished difference Result 2771 states and 3144 transitions. [2019-05-23 11:15:44,987 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2019-05-23 11:15:44,987 INFO L146 ILogger]: Start accepts. Automaton has 20 states. Word has length 233 [2019-05-23 11:15:44,988 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:44,995 INFO L146 ILogger]: With dead ends: 2771 [2019-05-23 11:15:44,995 INFO L146 ILogger]: Without dead ends: 1704 [2019-05-23 11:15:44,997 INFO L146 ILogger]: 0 DeclaredPredicates, 292 GetRequests, 236 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 756 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=946, Invalid=2246, Unknown=0, NotChecked=0, Total=3192 [2019-05-23 11:15:44,999 INFO L146 ILogger]: Start minimizeSevpa. Operand 1704 states. [2019-05-23 11:15:45,026 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 1704 to 1530. [2019-05-23 11:15:45,027 INFO L146 ILogger]: Start removeUnreachable. Operand 1530 states. [2019-05-23 11:15:45,030 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 1530 states to 1530 states and 1730 transitions. [2019-05-23 11:15:45,030 INFO L146 ILogger]: Start accepts. Automaton has 1530 states and 1730 transitions. Word has length 233 [2019-05-23 11:15:45,030 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:45,030 INFO L146 ILogger]: Abstraction has 1530 states and 1730 transitions. [2019-05-23 11:15:45,030 INFO L146 ILogger]: Interpolant automaton has 20 states. [2019-05-23 11:15:45,031 INFO L146 ILogger]: Start isEmpty. Operand 1530 states and 1730 transitions. [2019-05-23 11:15:45,037 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 306 [2019-05-23 11:15:45,037 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:45,037 INFO L146 ILogger]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:15:45,038 INFO L146 ILogger]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:45,038 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:45,038 INFO L146 ILogger]: Analyzing trace with hash -1013726658, now seen corresponding path program 4 times [2019-05-23 11:15:45,038 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:45,038 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:45,039 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:45,039 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:15:45,040 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:45,089 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:45,347 INFO L146 ILogger]: Checked inductivity of 1575 backedges. 0 proven. 408 refuted. 0 times theorem prover too weak. 1167 trivial. 0 not checked. [2019-05-23 11:15:45,347 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:45,348 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 -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:15:45,357 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:15:45,410 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:15:45,410 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:45,411 INFO L146 ILogger]: Trace formula consists of 361 conjuncts, 58 conjunts are in the unsatisfiable core [2019-05-23 11:15:45,417 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:15:45,532 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2019-05-23 11:15:45,532 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:15:45,537 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:15:45,537 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:15:45,537 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:19, output treesize:15 [2019-05-23 11:15:45,586 INFO L146 ILogger]: treesize reduction 27, result has 25.0 percent of original size [2019-05-23 11:15:45,587 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2019-05-23 11:15:45,587 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:15:45,592 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:15:45,592 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:15:45,593 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:23, output treesize:19 [2019-05-23 11:15:46,378 INFO L146 ILogger]: Checked inductivity of 1575 backedges. 215 proven. 1358 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-05-23 11:15:46,398 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:15:46,398 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 29] total 41 [2019-05-23 11:15:46,399 INFO L146 ILogger]: Interpolant automaton has 41 states [2019-05-23 11:15:46,400 INFO L146 ILogger]: Constructing interpolant automaton starting with 41 interpolants. [2019-05-23 11:15:46,401 INFO L146 ILogger]: CoverageRelationStatistics Valid=362, Invalid=1278, Unknown=0, NotChecked=0, Total=1640 [2019-05-23 11:15:46,401 INFO L146 ILogger]: Start difference. First operand 1530 states and 1730 transitions. Second operand 41 states. [2019-05-23 11:15:48,636 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:48,636 INFO L146 ILogger]: Finished difference Result 4234 states and 4797 transitions. [2019-05-23 11:15:48,636 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2019-05-23 11:15:48,636 INFO L146 ILogger]: Start accepts. Automaton has 41 states. Word has length 305 [2019-05-23 11:15:48,637 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:48,647 INFO L146 ILogger]: With dead ends: 4234 [2019-05-23 11:15:48,648 INFO L146 ILogger]: Without dead ends: 2810 [2019-05-23 11:15:48,650 INFO L146 ILogger]: 0 DeclaredPredicates, 322 GetRequests, 280 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 760 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=398, Invalid=1494, Unknown=0, NotChecked=0, Total=1892 [2019-05-23 11:15:48,655 INFO L146 ILogger]: Start minimizeSevpa. Operand 2810 states. [2019-05-23 11:15:48,707 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 2810 to 2331. [2019-05-23 11:15:48,707 INFO L146 ILogger]: Start removeUnreachable. Operand 2331 states. [2019-05-23 11:15:48,711 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 2331 states to 2331 states and 2635 transitions. [2019-05-23 11:15:48,712 INFO L146 ILogger]: Start accepts. Automaton has 2331 states and 2635 transitions. Word has length 305 [2019-05-23 11:15:48,712 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:48,712 INFO L146 ILogger]: Abstraction has 2331 states and 2635 transitions. [2019-05-23 11:15:48,712 INFO L146 ILogger]: Interpolant automaton has 41 states. [2019-05-23 11:15:48,713 INFO L146 ILogger]: Start isEmpty. Operand 2331 states and 2635 transitions. [2019-05-23 11:15:48,721 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 330 [2019-05-23 11:15:48,721 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:48,722 INFO L146 ILogger]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:15:48,722 INFO L146 ILogger]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:48,722 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:48,723 INFO L146 ILogger]: Analyzing trace with hash 68120907, now seen corresponding path program 5 times [2019-05-23 11:15:48,723 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:48,723 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:48,724 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:48,724 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:15:48,724 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:48,755 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:49,314 INFO L146 ILogger]: Checked inductivity of 1862 backedges. 0 proven. 481 refuted. 0 times theorem prover too weak. 1381 trivial. 0 not checked. [2019-05-23 11:15:49,315 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:49,315 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:15:49,340 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:15:49,601 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2019-05-23 11:15:49,601 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:49,603 INFO L146 ILogger]: Trace formula consists of 433 conjuncts, 15 conjunts are in the unsatisfiable core [2019-05-23 11:15:49,607 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:15:49,693 INFO L146 ILogger]: Checked inductivity of 1862 backedges. 0 proven. 1381 refuted. 0 times theorem prover too weak. 481 trivial. 0 not checked. [2019-05-23 11:15:49,712 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:15:49,713 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 17 [2019-05-23 11:15:49,713 INFO L146 ILogger]: Interpolant automaton has 17 states [2019-05-23 11:15:49,714 INFO L146 ILogger]: Constructing interpolant automaton starting with 17 interpolants. [2019-05-23 11:15:49,715 INFO L146 ILogger]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2019-05-23 11:15:49,715 INFO L146 ILogger]: Start difference. First operand 2331 states and 2635 transitions. Second operand 17 states. [2019-05-23 11:15:50,430 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:50,430 INFO L146 ILogger]: Finished difference Result 4906 states and 5552 transitions. [2019-05-23 11:15:50,430 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-05-23 11:15:50,431 INFO L146 ILogger]: Start accepts. Automaton has 17 states. Word has length 329 [2019-05-23 11:15:50,431 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:50,440 INFO L146 ILogger]: With dead ends: 4906 [2019-05-23 11:15:50,441 INFO L146 ILogger]: Without dead ends: 2703 [2019-05-23 11:15:50,444 INFO L146 ILogger]: 0 DeclaredPredicates, 344 GetRequests, 329 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2019-05-23 11:15:50,448 INFO L146 ILogger]: Start minimizeSevpa. Operand 2703 states. [2019-05-23 11:15:50,489 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 2703 to 2469. [2019-05-23 11:15:50,489 INFO L146 ILogger]: Start removeUnreachable. Operand 2469 states. [2019-05-23 11:15:50,494 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 2469 states to 2469 states and 2791 transitions. [2019-05-23 11:15:50,494 INFO L146 ILogger]: Start accepts. Automaton has 2469 states and 2791 transitions. Word has length 329 [2019-05-23 11:15:50,494 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:50,494 INFO L146 ILogger]: Abstraction has 2469 states and 2791 transitions. [2019-05-23 11:15:50,494 INFO L146 ILogger]: Interpolant automaton has 17 states. [2019-05-23 11:15:50,495 INFO L146 ILogger]: Start isEmpty. Operand 2469 states and 2791 transitions. [2019-05-23 11:15:50,501 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 354 [2019-05-23 11:15:50,501 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:50,501 INFO L146 ILogger]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:15:50,502 INFO L146 ILogger]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:50,502 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:50,502 INFO L146 ILogger]: Analyzing trace with hash -812515560, now seen corresponding path program 6 times [2019-05-23 11:15:50,502 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:50,502 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:50,503 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:50,503 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:15:50,503 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:50,530 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:50,820 INFO L146 ILogger]: Checked inductivity of 2173 backedges. 0 proven. 560 refuted. 0 times theorem prover too weak. 1613 trivial. 0 not checked. [2019-05-23 11:15:50,821 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:50,821 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:15:50,831 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:15:50,878 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2019-05-23 11:15:50,878 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:50,879 INFO L146 ILogger]: Trace formula consists of 163 conjuncts, 16 conjunts are in the unsatisfiable core [2019-05-23 11:15:50,884 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:15:50,931 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2019-05-23 11:15:50,931 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:15:50,955 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:15:50,956 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:15:50,956 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:15, output treesize:11 [2019-05-23 11:15:51,115 INFO L146 ILogger]: treesize reduction 40, result has 23.1 percent of original size [2019-05-23 11:15:51,115 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 27 [2019-05-23 11:15:51,116 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:15:51,123 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:15:51,123 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:15:51,124 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:31, output treesize:27 [2019-05-23 11:15:51,517 WARN L146 ILogger]: Spent 107.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 22 [2019-05-23 11:15:51,518 INFO L146 ILogger]: treesize reduction 17, result has 66.7 percent of original size [2019-05-23 11:15:51,519 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 43 [2019-05-23 11:15:51,520 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:15:51,533 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:15:51,539 INFO L146 ILogger]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 4 xjuncts. [2019-05-23 11:15:51,539 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 4 variables, input treesize:41, output treesize:40 [2019-05-23 11:15:52,240 INFO L146 ILogger]: Checked inductivity of 2173 backedges. 103 proven. 282 refuted. 0 times theorem prover too weak. 1788 trivial. 0 not checked. [2019-05-23 11:15:52,260 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:15:52,260 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 14] total 29 [2019-05-23 11:15:52,261 INFO L146 ILogger]: Interpolant automaton has 29 states [2019-05-23 11:15:52,261 INFO L146 ILogger]: Constructing interpolant automaton starting with 29 interpolants. [2019-05-23 11:15:52,261 INFO L146 ILogger]: CoverageRelationStatistics Valid=261, Invalid=551, Unknown=0, NotChecked=0, Total=812 [2019-05-23 11:15:52,261 INFO L146 ILogger]: Start difference. First operand 2469 states and 2791 transitions. Second operand 29 states.