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_copyInitSum2_false-unreach-call_ground.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-7aa59a0 [2019-05-23 11:15:15,571 INFO L146 ILogger]: Resetting all preferences to default values... [2019-05-23 11:15:15,573 INFO L146 ILogger]: Resetting UltimateCore preferences to default values [2019-05-23 11:15:15,584 INFO L146 ILogger]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-05-23 11:15:15,584 INFO L146 ILogger]: Resetting Boogie Preprocessor preferences to default values [2019-05-23 11:15:15,585 INFO L146 ILogger]: Resetting Boogie Procedure Inliner preferences to default values [2019-05-23 11:15:15,587 INFO L146 ILogger]: Resetting Abstract Interpretation preferences to default values [2019-05-23 11:15:15,588 INFO L146 ILogger]: Resetting LassoRanker preferences to default values [2019-05-23 11:15:15,590 INFO L146 ILogger]: Resetting Reaching Definitions preferences to default values [2019-05-23 11:15:15,591 INFO L146 ILogger]: Resetting SyntaxChecker preferences to default values [2019-05-23 11:15:15,592 INFO L146 ILogger]: Büchi Program Product provides no preferences, ignoring... [2019-05-23 11:15:15,592 INFO L146 ILogger]: Resetting LTL2Aut preferences to default values [2019-05-23 11:15:15,593 INFO L146 ILogger]: Resetting PEA to Boogie preferences to default values [2019-05-23 11:15:15,594 INFO L146 ILogger]: Resetting BlockEncodingV2 preferences to default values [2019-05-23 11:15:15,595 INFO L146 ILogger]: Resetting ChcToBoogie preferences to default values [2019-05-23 11:15:15,596 INFO L146 ILogger]: Resetting AutomataScriptInterpreter preferences to default values [2019-05-23 11:15:15,597 INFO L146 ILogger]: Resetting BuchiAutomizer preferences to default values [2019-05-23 11:15:15,599 INFO L146 ILogger]: Resetting CACSL2BoogieTranslator preferences to default values [2019-05-23 11:15:15,601 INFO L146 ILogger]: Resetting CodeCheck preferences to default values [2019-05-23 11:15:15,603 INFO L146 ILogger]: Resetting InvariantSynthesis preferences to default values [2019-05-23 11:15:15,604 INFO L146 ILogger]: Resetting RCFGBuilder preferences to default values [2019-05-23 11:15:15,605 INFO L146 ILogger]: Resetting TraceAbstraction preferences to default values [2019-05-23 11:15:15,607 INFO L146 ILogger]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-05-23 11:15:15,608 INFO L146 ILogger]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-05-23 11:15:15,608 INFO L146 ILogger]: Resetting TreeAutomizer preferences to default values [2019-05-23 11:15:15,609 INFO L146 ILogger]: Resetting IcfgToChc preferences to default values [2019-05-23 11:15:15,609 INFO L146 ILogger]: Resetting IcfgTransformer preferences to default values [2019-05-23 11:15:15,610 INFO L146 ILogger]: ReqToTest provides no preferences, ignoring... [2019-05-23 11:15:15,610 INFO L146 ILogger]: Resetting Boogie Printer preferences to default values [2019-05-23 11:15:15,611 INFO L146 ILogger]: Resetting ChcSmtPrinter preferences to default values [2019-05-23 11:15:15,612 INFO L146 ILogger]: Resetting ReqPrinter preferences to default values [2019-05-23 11:15:15,613 INFO L146 ILogger]: Resetting Witness Printer preferences to default values [2019-05-23 11:15:15,614 INFO L146 ILogger]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-05-23 11:15:15,614 INFO L146 ILogger]: Resetting CDTParser preferences to default values [2019-05-23 11:15:15,615 INFO L146 ILogger]: AutomataScriptParser provides no preferences, ignoring... [2019-05-23 11:15:15,615 INFO L146 ILogger]: ReqParser provides no preferences, ignoring... [2019-05-23 11:15:15,615 INFO L146 ILogger]: Resetting SmtParser preferences to default values [2019-05-23 11:15:15,616 INFO L146 ILogger]: Resetting Witness Parser preferences to default values [2019-05-23 11:15:15,617 INFO L146 ILogger]: Finished resetting all preferences to default values... [2019-05-23 11:15:15,617 INFO L146 ILogger]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-05-23 11:15:15,632 INFO L146 ILogger]: Loading preferences was successful [2019-05-23 11:15:15,632 INFO L146 ILogger]: Preferences different from defaults after loading the file: [2019-05-23 11:15:15,633 INFO L146 ILogger]: Preferences of BlockEncodingV2 differ from their defaults: [2019-05-23 11:15:15,633 INFO L146 ILogger]: * Create parallel compositions if possible=false [2019-05-23 11:15:15,634 INFO L146 ILogger]: * Use SBE=true [2019-05-23 11:15:15,634 INFO L146 ILogger]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-05-23 11:15:15,634 INFO L146 ILogger]: * sizeof long=4 [2019-05-23 11:15:15,634 INFO L146 ILogger]: * Overapproximate operations on floating types=true [2019-05-23 11:15:15,634 INFO L146 ILogger]: * sizeof POINTER=4 [2019-05-23 11:15:15,635 INFO L146 ILogger]: * Check division by zero=IGNORE [2019-05-23 11:15:15,635 INFO L146 ILogger]: * Pointer to allocated memory at dereference=IGNORE [2019-05-23 11:15:15,635 INFO L146 ILogger]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-05-23 11:15:15,635 INFO L146 ILogger]: * Check array bounds for arrays that are off heap=IGNORE [2019-05-23 11:15:15,635 INFO L146 ILogger]: * sizeof long double=12 [2019-05-23 11:15:15,636 INFO L146 ILogger]: * Check if freed pointer was valid=false [2019-05-23 11:15:15,636 INFO L146 ILogger]: * Use constant arrays=true [2019-05-23 11:15:15,636 INFO L146 ILogger]: * Pointer base address is valid at dereference=IGNORE [2019-05-23 11:15:15,636 INFO L146 ILogger]: Preferences of RCFGBuilder differ from their defaults: [2019-05-23 11:15:15,637 INFO L146 ILogger]: * Size of a code block=SequenceOfStatements [2019-05-23 11:15:15,637 INFO L146 ILogger]: * To the following directory=./dump/ [2019-05-23 11:15:15,637 INFO L146 ILogger]: * SMT solver=External_DefaultMode [2019-05-23 11:15:15,637 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-05-23 11:15:15,637 INFO L146 ILogger]: Preferences of TraceAbstraction differ from their defaults: [2019-05-23 11:15:15,637 INFO L146 ILogger]: * Compute Interpolants along a Counterexample=FPandBP [2019-05-23 11:15:15,638 INFO L146 ILogger]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-05-23 11:15:15,638 INFO L146 ILogger]: * Trace refinement strategy=CAMEL [2019-05-23 11:15:15,638 INFO L146 ILogger]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-05-23 11:15:15,638 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-05-23 11:15:15,638 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 11:15:15,688 INFO L146 ILogger]: Repository-Root is: /tmp [2019-05-23 11:15:15,700 INFO L146 ILogger]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-05-23 11:15:15,704 INFO L146 ILogger]: [Toolchain 1]: Toolchain selected. [2019-05-23 11:15:15,705 INFO L146 ILogger]: Initializing CDTParser... [2019-05-23 11:15:15,705 INFO L146 ILogger]: CDTParser initialized [2019-05-23 11:15:15,706 INFO L146 ILogger]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/array-examples/standard_copyInitSum2_false-unreach-call_ground.i [2019-05-23 11:15:15,771 INFO L146 ILogger]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bd38e716a/7df9b491f3ab4321bc39d20a8584142a/FLAG84ce2a16d [2019-05-23 11:15:16,208 INFO L146 ILogger]: Found 1 translation units. [2019-05-23 11:15:16,209 INFO L146 ILogger]: Scanning /storage/repos/svcomp/c/array-examples/standard_copyInitSum2_false-unreach-call_ground.i [2019-05-23 11:15:16,216 INFO L146 ILogger]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bd38e716a/7df9b491f3ab4321bc39d20a8584142a/FLAG84ce2a16d [2019-05-23 11:15:16,582 INFO L146 ILogger]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bd38e716a/7df9b491f3ab4321bc39d20a8584142a [2019-05-23 11:15:16,594 INFO L146 ILogger]: ####################### [Toolchain 1] ####################### [2019-05-23 11:15:16,595 INFO L146 ILogger]: Walking toolchain with 5 elements. [2019-05-23 11:15:16,597 INFO L146 ILogger]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-05-23 11:15:16,597 INFO L146 ILogger]: Initializing CACSL2BoogieTranslator... [2019-05-23 11:15:16,600 INFO L146 ILogger]: CACSL2BoogieTranslator initialized [2019-05-23 11:15:16,602 INFO L146 ILogger]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:15:16" (1/1) ... [2019-05-23 11:15:16,605 INFO L146 ILogger]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@577feff0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:15:16, skipping insertion in model container [2019-05-23 11:15:16,605 INFO L146 ILogger]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:15:16" (1/1) ... [2019-05-23 11:15:16,612 INFO L146 ILogger]: Starting translation in SV-COMP mode [2019-05-23 11:15:16,629 INFO L146 ILogger]: Built tables and reachable declarations [2019-05-23 11:15:16,796 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:15:16,803 INFO L146 ILogger]: Completed pre-run [2019-05-23 11:15:16,839 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:15:16,865 INFO L146 ILogger]: Completed translation [2019-05-23 11:15:16,866 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:15:16 WrapperNode [2019-05-23 11:15:16,866 INFO L146 ILogger]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-05-23 11:15:16,867 INFO L146 ILogger]: ------------------------Boogie Procedure Inliner---------------------------- [2019-05-23 11:15:16,868 INFO L146 ILogger]: Initializing Boogie Procedure Inliner... [2019-05-23 11:15:16,868 INFO L146 ILogger]: Boogie Procedure Inliner initialized [2019-05-23 11:15:16,877 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:15:16" (1/1) ... [2019-05-23 11:15:16,891 INFO L146 ILogger]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:15:16" (1/1) ... [2019-05-23 11:15:16,915 INFO L146 ILogger]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-05-23 11:15:16,915 INFO L146 ILogger]: ------------------------Boogie Preprocessor---------------------------- [2019-05-23 11:15:16,915 INFO L146 ILogger]: Initializing Boogie Preprocessor... [2019-05-23 11:15:16,915 INFO L146 ILogger]: Boogie Preprocessor initialized [2019-05-23 11:15:16,925 INFO L146 ILogger]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:15:16" (1/1) ... [2019-05-23 11:15:16,926 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:15:16" (1/1) ... [2019-05-23 11:15:16,928 INFO L146 ILogger]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:15:16" (1/1) ... [2019-05-23 11:15:16,928 INFO L146 ILogger]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:15:16" (1/1) ... [2019-05-23 11:15:16,934 INFO L146 ILogger]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:15:16" (1/1) ... [2019-05-23 11:15:16,940 INFO L146 ILogger]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:15:16" (1/1) ... [2019-05-23 11:15:16,941 INFO L146 ILogger]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:15:16" (1/1) ... [2019-05-23 11:15:16,943 INFO L146 ILogger]: ------------------------ END Boogie Preprocessor---------------------------- [2019-05-23 11:15:16,944 INFO L146 ILogger]: ------------------------RCFGBuilder---------------------------- [2019-05-23 11:15:16,944 INFO L146 ILogger]: Initializing RCFGBuilder... [2019-05-23 11:15:16,944 INFO L146 ILogger]: RCFGBuilder initialized [2019-05-23 11:15:16,945 INFO L146 ILogger]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:15:16" (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 11:15:17,087 INFO L146 ILogger]: Found specification of procedure write~int [2019-05-23 11:15:17,087 INFO L146 ILogger]: Found specification of procedure ULTIMATE.start [2019-05-23 11:15:17,088 INFO L146 ILogger]: Found implementation of procedure ULTIMATE.start [2019-05-23 11:15:17,088 INFO L146 ILogger]: Found specification of procedure read~int [2019-05-23 11:15:17,088 INFO L146 ILogger]: Found specification of procedure #Ultimate.allocOnStack [2019-05-23 11:15:17,088 INFO L146 ILogger]: Found specification of procedure ULTIMATE.dealloc [2019-05-23 11:15:17,541 INFO L146 ILogger]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-05-23 11:15:17,541 INFO L146 ILogger]: Removed 10 assume(true) statements. [2019-05-23 11:15:17,542 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:15:17 BoogieIcfgContainer [2019-05-23 11:15:17,542 INFO L146 ILogger]: ------------------------ END RCFGBuilder---------------------------- [2019-05-23 11:15:17,543 INFO L146 ILogger]: ------------------------TraceAbstraction---------------------------- [2019-05-23 11:15:17,543 INFO L146 ILogger]: Initializing TraceAbstraction... [2019-05-23 11:15:17,546 INFO L146 ILogger]: TraceAbstraction initialized [2019-05-23 11:15:17,547 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.05 11:15:16" (1/3) ... [2019-05-23 11:15:17,548 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a27be34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:15:17, skipping insertion in model container [2019-05-23 11:15:17,548 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:15:16" (2/3) ... [2019-05-23 11:15:17,548 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a27be34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:15:17, skipping insertion in model container [2019-05-23 11:15:17,548 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:15:17" (3/3) ... [2019-05-23 11:15:17,550 INFO L146 ILogger]: Analyzing ICFG standard_copyInitSum2_false-unreach-call_ground.i [2019-05-23 11:15:17,560 INFO L146 ILogger]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-05-23 11:15:17,569 INFO L146 ILogger]: Appying trace abstraction to program that has 1 error locations. [2019-05-23 11:15:17,585 INFO L146 ILogger]: Starting to check reachability of 1 error locations. [2019-05-23 11:15:17,612 INFO L146 ILogger]: Using default assertion order modulation [2019-05-23 11:15:17,613 INFO L146 ILogger]: Interprodecural is true [2019-05-23 11:15:17,613 INFO L146 ILogger]: Hoare is true [2019-05-23 11:15:17,613 INFO L146 ILogger]: Compute interpolants for FPandBP [2019-05-23 11:15:17,613 INFO L146 ILogger]: Backedges is STRAIGHT_LINE [2019-05-23 11:15:17,613 INFO L146 ILogger]: Determinization is PREDICATE_ABSTRACTION [2019-05-23 11:15:17,614 INFO L146 ILogger]: Difference is false [2019-05-23 11:15:17,614 INFO L146 ILogger]: Minimize is MINIMIZE_SEVPA [2019-05-23 11:15:17,614 INFO L146 ILogger]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-05-23 11:15:17,629 INFO L146 ILogger]: Start isEmpty. Operand 48 states. [2019-05-23 11:15:17,637 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 22 [2019-05-23 11:15:17,637 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:17,638 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] [2019-05-23 11:15:17,640 INFO L146 ILogger]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:17,645 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:17,646 INFO L146 ILogger]: Analyzing trace with hash -78465259, now seen corresponding path program 1 times [2019-05-23 11:15:17,647 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:17,648 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:17,699 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:17,699 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:15:17,699 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:17,735 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:17,774 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 11:15:17,777 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:15:17,777 INFO L146 ILogger]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-05-23 11:15:17,786 INFO L146 ILogger]: Interpolant automaton has 2 states [2019-05-23 11:15:17,796 INFO L146 ILogger]: Constructing interpolant automaton starting with 2 interpolants. [2019-05-23 11:15:17,797 INFO L146 ILogger]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-05-23 11:15:17,799 INFO L146 ILogger]: Start difference. First operand 48 states. Second operand 2 states. [2019-05-23 11:15:17,814 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:17,815 INFO L146 ILogger]: Finished difference Result 86 states and 100 transitions. [2019-05-23 11:15:17,815 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-05-23 11:15:17,816 INFO L146 ILogger]: Start accepts. Automaton has 2 states. Word has length 21 [2019-05-23 11:15:17,817 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:17,827 INFO L146 ILogger]: With dead ends: 86 [2019-05-23 11:15:17,828 INFO L146 ILogger]: Without dead ends: 40 [2019-05-23 11:15:17,832 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 11:15:17,851 INFO L146 ILogger]: Start minimizeSevpa. Operand 40 states. [2019-05-23 11:15:17,867 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 40 to 40. [2019-05-23 11:15:17,869 INFO L146 ILogger]: Start removeUnreachable. Operand 40 states. [2019-05-23 11:15:17,870 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 40 states to 40 states and 43 transitions. [2019-05-23 11:15:17,872 INFO L146 ILogger]: Start accepts. Automaton has 40 states and 43 transitions. Word has length 21 [2019-05-23 11:15:17,872 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:17,872 INFO L146 ILogger]: Abstraction has 40 states and 43 transitions. [2019-05-23 11:15:17,872 INFO L146 ILogger]: Interpolant automaton has 2 states. [2019-05-23 11:15:17,873 INFO L146 ILogger]: Start isEmpty. Operand 40 states and 43 transitions. [2019-05-23 11:15:17,874 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 22 [2019-05-23 11:15:17,874 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:17,874 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] [2019-05-23 11:15:17,875 INFO L146 ILogger]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:17,875 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:17,875 INFO L146 ILogger]: Analyzing trace with hash -598342159, now seen corresponding path program 1 times [2019-05-23 11:15:17,876 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:17,876 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:17,877 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:17,877 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:15:17,877 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:17,891 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:17,973 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 11:15:17,973 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:15:17,973 INFO L146 ILogger]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-05-23 11:15:17,975 INFO L146 ILogger]: Interpolant automaton has 3 states [2019-05-23 11:15:17,975 INFO L146 ILogger]: Constructing interpolant automaton starting with 3 interpolants. [2019-05-23 11:15:17,976 INFO L146 ILogger]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-05-23 11:15:17,976 INFO L146 ILogger]: Start difference. First operand 40 states and 43 transitions. Second operand 3 states. [2019-05-23 11:15:18,224 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:18,224 INFO L146 ILogger]: Finished difference Result 85 states and 93 transitions. [2019-05-23 11:15:18,226 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-05-23 11:15:18,226 INFO L146 ILogger]: Start accepts. Automaton has 3 states. Word has length 21 [2019-05-23 11:15:18,227 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:18,228 INFO L146 ILogger]: With dead ends: 85 [2019-05-23 11:15:18,228 INFO L146 ILogger]: Without dead ends: 55 [2019-05-23 11:15:18,230 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 11:15:18,231 INFO L146 ILogger]: Start minimizeSevpa. Operand 55 states. [2019-05-23 11:15:18,241 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 55 to 43. [2019-05-23 11:15:18,241 INFO L146 ILogger]: Start removeUnreachable. Operand 43 states. [2019-05-23 11:15:18,243 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 43 states to 43 states and 46 transitions. [2019-05-23 11:15:18,244 INFO L146 ILogger]: Start accepts. Automaton has 43 states and 46 transitions. Word has length 21 [2019-05-23 11:15:18,244 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:18,244 INFO L146 ILogger]: Abstraction has 43 states and 46 transitions. [2019-05-23 11:15:18,244 INFO L146 ILogger]: Interpolant automaton has 3 states. [2019-05-23 11:15:18,245 INFO L146 ILogger]: Start isEmpty. Operand 43 states and 46 transitions. [2019-05-23 11:15:18,246 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 39 [2019-05-23 11:15:18,247 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:18,247 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 11:15:18,247 INFO L146 ILogger]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:18,248 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:18,249 INFO L146 ILogger]: Analyzing trace with hash -600254027, now seen corresponding path program 1 times [2019-05-23 11:15:18,250 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:18,250 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:18,251 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:18,251 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:15:18,251 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:18,300 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:18,523 INFO L146 ILogger]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-05-23 11:15:18,524 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:18,524 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 11:15:18,546 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:15:18,598 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:18,600 INFO L146 ILogger]: Trace formula consists of 72 conjuncts, 3 conjunts are in the unsatisfiable core [2019-05-23 11:15:18,609 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:15:18,649 INFO L146 ILogger]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-05-23 11:15:18,676 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:15:18,676 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 6 [2019-05-23 11:15:18,677 INFO L146 ILogger]: Interpolant automaton has 6 states [2019-05-23 11:15:18,678 INFO L146 ILogger]: Constructing interpolant automaton starting with 6 interpolants. [2019-05-23 11:15:18,679 INFO L146 ILogger]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-05-23 11:15:18,679 INFO L146 ILogger]: Start difference. First operand 43 states and 46 transitions. Second operand 6 states. [2019-05-23 11:15:18,914 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:18,914 INFO L146 ILogger]: Finished difference Result 97 states and 104 transitions. [2019-05-23 11:15:18,915 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-05-23 11:15:18,915 INFO L146 ILogger]: Start accepts. Automaton has 6 states. Word has length 38 [2019-05-23 11:15:18,916 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:18,916 INFO L146 ILogger]: With dead ends: 97 [2019-05-23 11:15:18,917 INFO L146 ILogger]: Without dead ends: 65 [2019-05-23 11:15:18,917 INFO L146 ILogger]: 0 DeclaredPredicates, 44 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2019-05-23 11:15:18,918 INFO L146 ILogger]: Start minimizeSevpa. Operand 65 states. [2019-05-23 11:15:18,924 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 65 to 53. [2019-05-23 11:15:18,924 INFO L146 ILogger]: Start removeUnreachable. Operand 53 states. [2019-05-23 11:15:18,925 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 53 states to 53 states and 56 transitions. [2019-05-23 11:15:18,925 INFO L146 ILogger]: Start accepts. Automaton has 53 states and 56 transitions. Word has length 38 [2019-05-23 11:15:18,926 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:18,926 INFO L146 ILogger]: Abstraction has 53 states and 56 transitions. [2019-05-23 11:15:18,926 INFO L146 ILogger]: Interpolant automaton has 6 states. [2019-05-23 11:15:18,926 INFO L146 ILogger]: Start isEmpty. Operand 53 states and 56 transitions. [2019-05-23 11:15:18,927 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 49 [2019-05-23 11:15:18,928 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:18,928 INFO L146 ILogger]: trace histogram [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, 1, 1, 1] [2019-05-23 11:15:18,928 INFO L146 ILogger]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:18,929 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:18,929 INFO L146 ILogger]: Analyzing trace with hash 522975862, now seen corresponding path program 2 times [2019-05-23 11:15:18,929 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:18,929 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:18,930 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:18,930 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:15:18,930 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:18,951 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:19,056 INFO L146 ILogger]: Checked inductivity of 15 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-05-23 11:15:19,056 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:19,056 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 11:15:19,067 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:15:19,094 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:15:19,095 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:19,095 INFO L146 ILogger]: Trace formula consists of 86 conjuncts, 4 conjunts are in the unsatisfiable core [2019-05-23 11:15:19,098 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:15:19,176 INFO L146 ILogger]: Checked inductivity of 15 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-05-23 11:15:19,205 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:15:19,206 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2019-05-23 11:15:19,206 INFO L146 ILogger]: Interpolant automaton has 7 states [2019-05-23 11:15:19,207 INFO L146 ILogger]: Constructing interpolant automaton starting with 7 interpolants. [2019-05-23 11:15:19,207 INFO L146 ILogger]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-05-23 11:15:19,207 INFO L146 ILogger]: Start difference. First operand 53 states and 56 transitions. Second operand 7 states. [2019-05-23 11:15:19,396 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:19,396 INFO L146 ILogger]: Finished difference Result 109 states and 116 transitions. [2019-05-23 11:15:19,400 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-05-23 11:15:19,400 INFO L146 ILogger]: Start accepts. Automaton has 7 states. Word has length 48 [2019-05-23 11:15:19,400 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:19,401 INFO L146 ILogger]: With dead ends: 109 [2019-05-23 11:15:19,401 INFO L146 ILogger]: Without dead ends: 70 [2019-05-23 11:15:19,402 INFO L146 ILogger]: 0 DeclaredPredicates, 54 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:15:19,403 INFO L146 ILogger]: Start minimizeSevpa. Operand 70 states. [2019-05-23 11:15:19,408 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 70 to 63. [2019-05-23 11:15:19,408 INFO L146 ILogger]: Start removeUnreachable. Operand 63 states. [2019-05-23 11:15:19,409 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 63 states to 63 states and 66 transitions. [2019-05-23 11:15:19,409 INFO L146 ILogger]: Start accepts. Automaton has 63 states and 66 transitions. Word has length 48 [2019-05-23 11:15:19,409 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:19,410 INFO L146 ILogger]: Abstraction has 63 states and 66 transitions. [2019-05-23 11:15:19,410 INFO L146 ILogger]: Interpolant automaton has 7 states. [2019-05-23 11:15:19,410 INFO L146 ILogger]: Start isEmpty. Operand 63 states and 66 transitions. [2019-05-23 11:15:19,411 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 59 [2019-05-23 11:15:19,411 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:19,411 INFO L146 ILogger]: trace histogram [3, 3, 3, 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] [2019-05-23 11:15:19,412 INFO L146 ILogger]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:19,412 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:19,412 INFO L146 ILogger]: Analyzing trace with hash 1871245372, now seen corresponding path program 3 times [2019-05-23 11:15:19,412 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:19,412 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:19,413 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:19,413 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:15:19,414 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:19,436 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:19,546 INFO L146 ILogger]: Checked inductivity of 30 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-05-23 11:15:19,547 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:19,547 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 11:15:19,564 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:15:19,634 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-05-23 11:15:19,634 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:19,635 INFO L146 ILogger]: Trace formula consists of 96 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 11:15:19,641 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:15:19,723 INFO L146 ILogger]: Checked inductivity of 30 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-05-23 11:15:19,742 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:15:19,742 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2019-05-23 11:15:19,743 INFO L146 ILogger]: Interpolant automaton has 10 states [2019-05-23 11:15:19,743 INFO L146 ILogger]: Constructing interpolant automaton starting with 10 interpolants. [2019-05-23 11:15:19,744 INFO L146 ILogger]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2019-05-23 11:15:19,744 INFO L146 ILogger]: Start difference. First operand 63 states and 66 transitions. Second operand 10 states. [2019-05-23 11:15:20,460 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:20,460 INFO L146 ILogger]: Finished difference Result 119 states and 125 transitions. [2019-05-23 11:15:20,462 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-05-23 11:15:20,462 INFO L146 ILogger]: Start accepts. Automaton has 10 states. Word has length 58 [2019-05-23 11:15:20,462 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:20,463 INFO L146 ILogger]: With dead ends: 119 [2019-05-23 11:15:20,463 INFO L146 ILogger]: Without dead ends: 89 [2019-05-23 11:15:20,464 INFO L146 ILogger]: 0 DeclaredPredicates, 72 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2019-05-23 11:15:20,467 INFO L146 ILogger]: Start minimizeSevpa. Operand 89 states. [2019-05-23 11:15:20,473 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 89 to 77. [2019-05-23 11:15:20,473 INFO L146 ILogger]: Start removeUnreachable. Operand 77 states. [2019-05-23 11:15:20,474 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 77 states to 77 states and 80 transitions. [2019-05-23 11:15:20,474 INFO L146 ILogger]: Start accepts. Automaton has 77 states and 80 transitions. Word has length 58 [2019-05-23 11:15:20,474 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:20,474 INFO L146 ILogger]: Abstraction has 77 states and 80 transitions. [2019-05-23 11:15:20,475 INFO L146 ILogger]: Interpolant automaton has 10 states. [2019-05-23 11:15:20,475 INFO L146 ILogger]: Start isEmpty. Operand 77 states and 80 transitions. [2019-05-23 11:15:20,476 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 73 [2019-05-23 11:15:20,476 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:20,476 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 11:15:20,477 INFO L146 ILogger]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:20,477 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:20,477 INFO L146 ILogger]: Analyzing trace with hash 1585175093, now seen corresponding path program 4 times [2019-05-23 11:15:20,477 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:20,477 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:20,478 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:20,478 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:15:20,479 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:20,524 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:20,660 INFO L146 ILogger]: Checked inductivity of 60 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-05-23 11:15:20,661 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:20,661 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 11:15:20,672 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:15:20,718 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:15:20,719 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:20,720 INFO L146 ILogger]: Trace formula consists of 120 conjuncts, 5 conjunts are in the unsatisfiable core [2019-05-23 11:15:20,724 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:15:20,761 INFO L146 ILogger]: Checked inductivity of 60 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2019-05-23 11:15:20,779 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:15:20,779 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6] total 10 [2019-05-23 11:15:20,780 INFO L146 ILogger]: Interpolant automaton has 10 states [2019-05-23 11:15:20,780 INFO L146 ILogger]: Constructing interpolant automaton starting with 10 interpolants. [2019-05-23 11:15:20,780 INFO L146 ILogger]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2019-05-23 11:15:20,781 INFO L146 ILogger]: Start difference. First operand 77 states and 80 transitions. Second operand 10 states. [2019-05-23 11:15:21,399 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:21,399 INFO L146 ILogger]: Finished difference Result 154 states and 161 transitions. [2019-05-23 11:15:21,400 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-05-23 11:15:21,400 INFO L146 ILogger]: Start accepts. Automaton has 10 states. Word has length 72 [2019-05-23 11:15:21,400 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:21,401 INFO L146 ILogger]: With dead ends: 154 [2019-05-23 11:15:21,401 INFO L146 ILogger]: Without dead ends: 94 [2019-05-23 11:15:21,402 INFO L146 ILogger]: 0 DeclaredPredicates, 86 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=85, Invalid=155, Unknown=0, NotChecked=0, Total=240 [2019-05-23 11:15:21,403 INFO L146 ILogger]: Start minimizeSevpa. Operand 94 states. [2019-05-23 11:15:21,409 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 94 to 87. [2019-05-23 11:15:21,410 INFO L146 ILogger]: Start removeUnreachable. Operand 87 states. [2019-05-23 11:15:21,411 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 87 states to 87 states and 90 transitions. [2019-05-23 11:15:21,411 INFO L146 ILogger]: Start accepts. Automaton has 87 states and 90 transitions. Word has length 72 [2019-05-23 11:15:21,411 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:21,411 INFO L146 ILogger]: Abstraction has 87 states and 90 transitions. [2019-05-23 11:15:21,412 INFO L146 ILogger]: Interpolant automaton has 10 states. [2019-05-23 11:15:21,413 INFO L146 ILogger]: Start isEmpty. Operand 87 states and 90 transitions. [2019-05-23 11:15:21,414 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 83 [2019-05-23 11:15:21,414 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:21,414 INFO L146 ILogger]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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 11:15:21,414 INFO L146 ILogger]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:21,415 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:21,415 INFO L146 ILogger]: Analyzing trace with hash -1727862922, now seen corresponding path program 5 times [2019-05-23 11:15:21,415 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:21,415 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:21,416 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:21,416 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:15:21,416 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:21,447 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:21,702 INFO L146 ILogger]: Checked inductivity of 92 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-05-23 11:15:21,703 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:21,703 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 11:15:21,713 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:15:22,042 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2019-05-23 11:15:22,043 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:22,045 INFO L146 ILogger]: Trace formula consists of 134 conjuncts, 8 conjunts are in the unsatisfiable core [2019-05-23 11:15:22,050 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:15:22,140 INFO L146 ILogger]: Checked inductivity of 92 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2019-05-23 11:15:22,159 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:15:22,160 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 15 [2019-05-23 11:15:22,160 INFO L146 ILogger]: Interpolant automaton has 15 states [2019-05-23 11:15:22,160 INFO L146 ILogger]: Constructing interpolant automaton starting with 15 interpolants. [2019-05-23 11:15:22,161 INFO L146 ILogger]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2019-05-23 11:15:22,161 INFO L146 ILogger]: Start difference. First operand 87 states and 90 transitions. Second operand 15 states. [2019-05-23 11:15:22,608 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:22,609 INFO L146 ILogger]: Finished difference Result 183 states and 191 transitions. [2019-05-23 11:15:22,613 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-05-23 11:15:22,613 INFO L146 ILogger]: Start accepts. Automaton has 15 states. Word has length 82 [2019-05-23 11:15:22,613 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:22,614 INFO L146 ILogger]: With dead ends: 183 [2019-05-23 11:15:22,614 INFO L146 ILogger]: Without dead ends: 116 [2019-05-23 11:15:22,616 INFO L146 ILogger]: 0 DeclaredPredicates, 106 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=201, Invalid=611, Unknown=0, NotChecked=0, Total=812 [2019-05-23 11:15:22,616 INFO L146 ILogger]: Start minimizeSevpa. Operand 116 states. [2019-05-23 11:15:22,623 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 116 to 104. [2019-05-23 11:15:22,623 INFO L146 ILogger]: Start removeUnreachable. Operand 104 states. [2019-05-23 11:15:22,624 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 104 states to 104 states and 107 transitions. [2019-05-23 11:15:22,624 INFO L146 ILogger]: Start accepts. Automaton has 104 states and 107 transitions. Word has length 82 [2019-05-23 11:15:22,625 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:22,625 INFO L146 ILogger]: Abstraction has 104 states and 107 transitions. [2019-05-23 11:15:22,625 INFO L146 ILogger]: Interpolant automaton has 15 states. [2019-05-23 11:15:22,625 INFO L146 ILogger]: Start isEmpty. Operand 104 states and 107 transitions. [2019-05-23 11:15:22,626 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 100 [2019-05-23 11:15:22,627 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:22,627 INFO L146 ILogger]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:15:22,627 INFO L146 ILogger]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:22,627 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:22,627 INFO L146 ILogger]: Analyzing trace with hash 1662422322, now seen corresponding path program 6 times [2019-05-23 11:15:22,628 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:22,628 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:22,629 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:22,629 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:15:22,629 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:22,650 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:22,786 INFO L146 ILogger]: Checked inductivity of 156 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2019-05-23 11:15:22,787 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:22,787 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 11:15:22,799 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:15:22,864 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2019-05-23 11:15:22,864 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:22,865 INFO L146 ILogger]: Trace formula consists of 158 conjuncts, 11 conjunts are in the unsatisfiable core [2019-05-23 11:15:22,870 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:15:22,916 INFO L146 ILogger]: Checked inductivity of 156 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2019-05-23 11:15:22,937 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:15:22,937 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 8] total 14 [2019-05-23 11:15:22,938 INFO L146 ILogger]: Interpolant automaton has 14 states [2019-05-23 11:15:22,938 INFO L146 ILogger]: Constructing interpolant automaton starting with 14 interpolants. [2019-05-23 11:15:22,938 INFO L146 ILogger]: CoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2019-05-23 11:15:22,939 INFO L146 ILogger]: Start difference. First operand 104 states and 107 transitions. Second operand 14 states. [2019-05-23 11:15:23,259 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:23,260 INFO L146 ILogger]: Finished difference Result 202 states and 209 transitions. [2019-05-23 11:15:23,260 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-05-23 11:15:23,260 INFO L146 ILogger]: Start accepts. Automaton has 14 states. Word has length 99 [2019-05-23 11:15:23,261 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:23,262 INFO L146 ILogger]: With dead ends: 202 [2019-05-23 11:15:23,262 INFO L146 ILogger]: Without dead ends: 121 [2019-05-23 11:15:23,264 INFO L146 ILogger]: 0 DeclaredPredicates, 121 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=187, Invalid=365, Unknown=0, NotChecked=0, Total=552 [2019-05-23 11:15:23,264 INFO L146 ILogger]: Start minimizeSevpa. Operand 121 states. [2019-05-23 11:15:23,270 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 121 to 114. [2019-05-23 11:15:23,270 INFO L146 ILogger]: Start removeUnreachable. Operand 114 states. [2019-05-23 11:15:23,271 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 114 states to 114 states and 117 transitions. [2019-05-23 11:15:23,272 INFO L146 ILogger]: Start accepts. Automaton has 114 states and 117 transitions. Word has length 99 [2019-05-23 11:15:23,272 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:23,272 INFO L146 ILogger]: Abstraction has 114 states and 117 transitions. [2019-05-23 11:15:23,272 INFO L146 ILogger]: Interpolant automaton has 14 states. [2019-05-23 11:15:23,272 INFO L146 ILogger]: Start isEmpty. Operand 114 states and 117 transitions. [2019-05-23 11:15:23,274 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 110 [2019-05-23 11:15:23,274 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:23,274 INFO L146 ILogger]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:15:23,275 INFO L146 ILogger]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:23,275 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:23,275 INFO L146 ILogger]: Analyzing trace with hash 351034001, now seen corresponding path program 7 times [2019-05-23 11:15:23,275 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:23,275 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:23,276 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:23,276 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:15:23,276 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:23,297 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:23,601 INFO L146 ILogger]: Checked inductivity of 208 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2019-05-23 11:15:23,602 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:23,602 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 11:15:23,611 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:15:23,645 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:23,646 INFO L146 ILogger]: Trace formula consists of 172 conjuncts, 8 conjunts are in the unsatisfiable core [2019-05-23 11:15:23,649 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:15:23,683 INFO L146 ILogger]: Checked inductivity of 208 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2019-05-23 11:15:23,703 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:15:23,703 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 9] total 16 [2019-05-23 11:15:23,704 INFO L146 ILogger]: Interpolant automaton has 16 states [2019-05-23 11:15:23,704 INFO L146 ILogger]: Constructing interpolant automaton starting with 16 interpolants. [2019-05-23 11:15:23,704 INFO L146 ILogger]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2019-05-23 11:15:23,705 INFO L146 ILogger]: Start difference. First operand 114 states and 117 transitions. Second operand 16 states. [2019-05-23 11:15:24,321 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:24,322 INFO L146 ILogger]: Finished difference Result 219 states and 226 transitions. [2019-05-23 11:15:24,322 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-05-23 11:15:24,323 INFO L146 ILogger]: Start accepts. Automaton has 16 states. Word has length 109 [2019-05-23 11:15:24,323 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:24,324 INFO L146 ILogger]: With dead ends: 219 [2019-05-23 11:15:24,324 INFO L146 ILogger]: Without dead ends: 131 [2019-05-23 11:15:24,325 INFO L146 ILogger]: 0 DeclaredPredicates, 135 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=253, Invalid=503, Unknown=0, NotChecked=0, Total=756 [2019-05-23 11:15:24,325 INFO L146 ILogger]: Start minimizeSevpa. Operand 131 states. [2019-05-23 11:15:24,332 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 131 to 124. [2019-05-23 11:15:24,332 INFO L146 ILogger]: Start removeUnreachable. Operand 124 states. [2019-05-23 11:15:24,333 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 124 states to 124 states and 127 transitions. [2019-05-23 11:15:24,333 INFO L146 ILogger]: Start accepts. Automaton has 124 states and 127 transitions. Word has length 109 [2019-05-23 11:15:24,334 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:24,334 INFO L146 ILogger]: Abstraction has 124 states and 127 transitions. [2019-05-23 11:15:24,334 INFO L146 ILogger]: Interpolant automaton has 16 states. [2019-05-23 11:15:24,334 INFO L146 ILogger]: Start isEmpty. Operand 124 states and 127 transitions. [2019-05-23 11:15:24,336 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 120 [2019-05-23 11:15:24,336 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:24,336 INFO L146 ILogger]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:15:24,336 INFO L146 ILogger]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:24,337 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:24,337 INFO L146 ILogger]: Analyzing trace with hash 444321298, now seen corresponding path program 8 times [2019-05-23 11:15:24,337 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:24,337 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:24,338 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:24,338 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:15:24,338 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:24,359 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:24,593 INFO L146 ILogger]: Checked inductivity of 270 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2019-05-23 11:15:24,594 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:24,594 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 11:15:24,604 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:15:24,637 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:15:24,637 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:24,638 INFO L146 ILogger]: Trace formula consists of 186 conjuncts, 9 conjunts are in the unsatisfiable core [2019-05-23 11:15:24,641 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:15:24,683 INFO L146 ILogger]: Checked inductivity of 270 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2019-05-23 11:15:24,702 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:15:24,702 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 10] total 18 [2019-05-23 11:15:24,702 INFO L146 ILogger]: Interpolant automaton has 18 states [2019-05-23 11:15:24,703 INFO L146 ILogger]: Constructing interpolant automaton starting with 18 interpolants. [2019-05-23 11:15:24,703 INFO L146 ILogger]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2019-05-23 11:15:24,703 INFO L146 ILogger]: Start difference. First operand 124 states and 127 transitions. Second operand 18 states. [2019-05-23 11:15:25,128 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:25,128 INFO L146 ILogger]: Finished difference Result 236 states and 243 transitions. [2019-05-23 11:15:25,129 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-05-23 11:15:25,129 INFO L146 ILogger]: Start accepts. Automaton has 18 states. Word has length 119 [2019-05-23 11:15:25,129 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:25,131 INFO L146 ILogger]: With dead ends: 236 [2019-05-23 11:15:25,131 INFO L146 ILogger]: Without dead ends: 141 [2019-05-23 11:15:25,133 INFO L146 ILogger]: 0 DeclaredPredicates, 149 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=329, Invalid=663, Unknown=0, NotChecked=0, Total=992 [2019-05-23 11:15:25,133 INFO L146 ILogger]: Start minimizeSevpa. Operand 141 states. [2019-05-23 11:15:25,139 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 141 to 134. [2019-05-23 11:15:25,140 INFO L146 ILogger]: Start removeUnreachable. Operand 134 states. [2019-05-23 11:15:25,140 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 134 states to 134 states and 137 transitions. [2019-05-23 11:15:25,141 INFO L146 ILogger]: Start accepts. Automaton has 134 states and 137 transitions. Word has length 119 [2019-05-23 11:15:25,141 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:25,141 INFO L146 ILogger]: Abstraction has 134 states and 137 transitions. [2019-05-23 11:15:25,141 INFO L146 ILogger]: Interpolant automaton has 18 states. [2019-05-23 11:15:25,141 INFO L146 ILogger]: Start isEmpty. Operand 134 states and 137 transitions. [2019-05-23 11:15:25,143 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 130 [2019-05-23 11:15:25,143 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:25,144 INFO L146 ILogger]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:15:25,144 INFO L146 ILogger]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:25,144 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:25,145 INFO L146 ILogger]: Analyzing trace with hash 285581617, now seen corresponding path program 9 times [2019-05-23 11:15:25,145 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:25,145 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:25,146 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:25,146 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:15:25,146 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:25,176 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:25,537 INFO L146 ILogger]: Checked inductivity of 342 backedges. 0 proven. 204 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2019-05-23 11:15:25,537 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:25,537 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 11:15:25,546 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:15:25,605 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2019-05-23 11:15:25,605 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:25,606 INFO L146 ILogger]: Trace formula consists of 144 conjuncts, 10 conjunts are in the unsatisfiable core [2019-05-23 11:15:25,608 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:15:25,695 INFO L146 ILogger]: Checked inductivity of 342 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 296 trivial. 0 not checked. [2019-05-23 11:15:25,714 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:15:25,714 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 11] total 24 [2019-05-23 11:15:25,715 INFO L146 ILogger]: Interpolant automaton has 24 states [2019-05-23 11:15:25,715 INFO L146 ILogger]: Constructing interpolant automaton starting with 24 interpolants. [2019-05-23 11:15:25,715 INFO L146 ILogger]: CoverageRelationStatistics Valid=124, Invalid=428, Unknown=0, NotChecked=0, Total=552 [2019-05-23 11:15:25,716 INFO L146 ILogger]: Start difference. First operand 134 states and 137 transitions. Second operand 24 states. [2019-05-23 11:15:26,388 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:26,388 INFO L146 ILogger]: Finished difference Result 265 states and 273 transitions. [2019-05-23 11:15:26,389 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2019-05-23 11:15:26,389 INFO L146 ILogger]: Start accepts. Automaton has 24 states. Word has length 129 [2019-05-23 11:15:26,389 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:26,391 INFO L146 ILogger]: With dead ends: 265 [2019-05-23 11:15:26,391 INFO L146 ILogger]: Without dead ends: 163 [2019-05-23 11:15:26,393 INFO L146 ILogger]: 0 DeclaredPredicates, 171 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 439 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=550, Invalid=1706, Unknown=0, NotChecked=0, Total=2256 [2019-05-23 11:15:26,393 INFO L146 ILogger]: Start minimizeSevpa. Operand 163 states. [2019-05-23 11:15:26,397 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 163 to 151. [2019-05-23 11:15:26,398 INFO L146 ILogger]: Start removeUnreachable. Operand 151 states. [2019-05-23 11:15:26,398 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 151 states to 151 states and 154 transitions. [2019-05-23 11:15:26,399 INFO L146 ILogger]: Start accepts. Automaton has 151 states and 154 transitions. Word has length 129 [2019-05-23 11:15:26,399 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:26,399 INFO L146 ILogger]: Abstraction has 151 states and 154 transitions. [2019-05-23 11:15:26,399 INFO L146 ILogger]: Interpolant automaton has 24 states. [2019-05-23 11:15:26,399 INFO L146 ILogger]: Start isEmpty. Operand 151 states and 154 transitions. [2019-05-23 11:15:26,401 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 147 [2019-05-23 11:15:26,401 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:26,402 INFO L146 ILogger]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:15:26,402 INFO L146 ILogger]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:26,402 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:26,402 INFO L146 ILogger]: Analyzing trace with hash 492353781, now seen corresponding path program 10 times [2019-05-23 11:15:26,403 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:26,403 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:26,403 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:26,404 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:15:26,404 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:26,425 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:26,724 INFO L146 ILogger]: Checked inductivity of 453 backedges. 0 proven. 261 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2019-05-23 11:15:26,725 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:26,725 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 11:15:26,734 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:15:26,801 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:15:26,801 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:26,803 INFO L146 ILogger]: Trace formula consists of 224 conjuncts, 11 conjunts are in the unsatisfiable core [2019-05-23 11:15:26,805 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:15:26,873 INFO L146 ILogger]: Checked inductivity of 453 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 336 trivial. 0 not checked. [2019-05-23 11:15:26,897 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:15:26,897 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 12] total 22 [2019-05-23 11:15:26,898 INFO L146 ILogger]: Interpolant automaton has 22 states [2019-05-23 11:15:26,898 INFO L146 ILogger]: Constructing interpolant automaton starting with 22 interpolants. [2019-05-23 11:15:26,898 INFO L146 ILogger]: CoverageRelationStatistics Valid=132, Invalid=330, Unknown=0, NotChecked=0, Total=462 [2019-05-23 11:15:26,898 INFO L146 ILogger]: Start difference. First operand 151 states and 154 transitions. Second operand 22 states. [2019-05-23 11:15:27,325 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:27,326 INFO L146 ILogger]: Finished difference Result 284 states and 291 transitions. [2019-05-23 11:15:27,326 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2019-05-23 11:15:27,327 INFO L146 ILogger]: Start accepts. Automaton has 22 states. Word has length 146 [2019-05-23 11:15:27,327 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:27,328 INFO L146 ILogger]: With dead ends: 284 [2019-05-23 11:15:27,328 INFO L146 ILogger]: Without dead ends: 168 [2019-05-23 11:15:27,329 INFO L146 ILogger]: 0 DeclaredPredicates, 184 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 264 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=511, Invalid=1049, Unknown=0, NotChecked=0, Total=1560 [2019-05-23 11:15:27,330 INFO L146 ILogger]: Start minimizeSevpa. Operand 168 states. [2019-05-23 11:15:27,333 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 168 to 161. [2019-05-23 11:15:27,333 INFO L146 ILogger]: Start removeUnreachable. Operand 161 states. [2019-05-23 11:15:27,334 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 161 states to 161 states and 164 transitions. [2019-05-23 11:15:27,334 INFO L146 ILogger]: Start accepts. Automaton has 161 states and 164 transitions. Word has length 146 [2019-05-23 11:15:27,334 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:27,334 INFO L146 ILogger]: Abstraction has 161 states and 164 transitions. [2019-05-23 11:15:27,334 INFO L146 ILogger]: Interpolant automaton has 22 states. [2019-05-23 11:15:27,335 INFO L146 ILogger]: Start isEmpty. Operand 161 states and 164 transitions. [2019-05-23 11:15:27,337 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 157 [2019-05-23 11:15:27,337 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:27,337 INFO L146 ILogger]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:15:27,337 INFO L146 ILogger]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:27,338 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:27,338 INFO L146 ILogger]: Analyzing trace with hash -1949759690, now seen corresponding path program 11 times [2019-05-23 11:15:27,338 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:27,338 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:27,339 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:27,339 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:15:27,339 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:27,367 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:28,185 INFO L146 ILogger]: Checked inductivity of 545 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2019-05-23 11:15:28,186 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:28,186 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:15:28,194 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:15:32,795 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2019-05-23 11:15:32,795 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:32,802 INFO L146 ILogger]: Trace formula consists of 238 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:15:32,804 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:15:32,855 INFO L146 ILogger]: Checked inductivity of 545 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2019-05-23 11:15:32,886 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:15:32,887 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 13] total 24 [2019-05-23 11:15:32,887 INFO L146 ILogger]: Interpolant automaton has 24 states [2019-05-23 11:15:32,888 INFO L146 ILogger]: Constructing interpolant automaton starting with 24 interpolants. [2019-05-23 11:15:32,888 INFO L146 ILogger]: CoverageRelationStatistics Valid=156, Invalid=396, Unknown=0, NotChecked=0, Total=552 [2019-05-23 11:15:32,888 INFO L146 ILogger]: Start difference. First operand 161 states and 164 transitions. Second operand 24 states. [2019-05-23 11:15:33,618 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:33,618 INFO L146 ILogger]: Finished difference Result 301 states and 308 transitions. [2019-05-23 11:15:33,626 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2019-05-23 11:15:33,626 INFO L146 ILogger]: Start accepts. Automaton has 24 states. Word has length 156 [2019-05-23 11:15:33,626 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:33,627 INFO L146 ILogger]: With dead ends: 301 [2019-05-23 11:15:33,627 INFO L146 ILogger]: Without dead ends: 178 [2019-05-23 11:15:33,628 INFO L146 ILogger]: 0 DeclaredPredicates, 198 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 324 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=617, Invalid=1275, Unknown=0, NotChecked=0, Total=1892 [2019-05-23 11:15:33,629 INFO L146 ILogger]: Start minimizeSevpa. Operand 178 states. [2019-05-23 11:15:33,632 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 178 to 171. [2019-05-23 11:15:33,632 INFO L146 ILogger]: Start removeUnreachable. Operand 171 states. [2019-05-23 11:15:33,633 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 171 states to 171 states and 174 transitions. [2019-05-23 11:15:33,633 INFO L146 ILogger]: Start accepts. Automaton has 171 states and 174 transitions. Word has length 156 [2019-05-23 11:15:33,633 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:33,633 INFO L146 ILogger]: Abstraction has 171 states and 174 transitions. [2019-05-23 11:15:33,633 INFO L146 ILogger]: Interpolant automaton has 24 states. [2019-05-23 11:15:33,634 INFO L146 ILogger]: Start isEmpty. Operand 171 states and 174 transitions. [2019-05-23 11:15:33,635 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 167 [2019-05-23 11:15:33,635 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:33,635 INFO L146 ILogger]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:15:33,635 INFO L146 ILogger]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:33,635 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:33,636 INFO L146 ILogger]: Analyzing trace with hash 686779413, now seen corresponding path program 12 times [2019-05-23 11:15:33,636 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:33,636 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:33,637 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:33,637 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:15:33,637 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:33,656 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:34,106 INFO L146 ILogger]: Checked inductivity of 647 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 251 trivial. 0 not checked. [2019-05-23 11:15:34,107 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:34,107 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:15:34,116 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:15:35,775 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2019-05-23 11:15:35,775 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:35,781 INFO L146 ILogger]: Trace formula consists of 238 conjuncts, 19 conjunts are in the unsatisfiable core [2019-05-23 11:15:35,783 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:15:36,007 INFO L146 ILogger]: Checked inductivity of 647 backedges. 31 proven. 75 refuted. 0 times theorem prover too weak. 541 trivial. 0 not checked. [2019-05-23 11:15:36,027 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:15:36,028 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 15] total 33 [2019-05-23 11:15:36,028 INFO L146 ILogger]: Interpolant automaton has 33 states [2019-05-23 11:15:36,030 INFO L146 ILogger]: Constructing interpolant automaton starting with 33 interpolants. [2019-05-23 11:15:36,031 INFO L146 ILogger]: CoverageRelationStatistics Valid=233, Invalid=823, Unknown=0, NotChecked=0, Total=1056 [2019-05-23 11:15:36,031 INFO L146 ILogger]: Start difference. First operand 171 states and 174 transitions. Second operand 33 states. [2019-05-23 11:15:37,176 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:37,176 INFO L146 ILogger]: Finished difference Result 331 states and 340 transitions. [2019-05-23 11:15:37,177 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2019-05-23 11:15:37,177 INFO L146 ILogger]: Start accepts. Automaton has 33 states. Word has length 166 [2019-05-23 11:15:37,177 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:37,178 INFO L146 ILogger]: With dead ends: 331 [2019-05-23 11:15:37,178 INFO L146 ILogger]: Without dead ends: 201 [2019-05-23 11:15:37,180 INFO L146 ILogger]: 0 DeclaredPredicates, 222 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 811 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1039, Invalid=3121, Unknown=0, NotChecked=0, Total=4160 [2019-05-23 11:15:37,181 INFO L146 ILogger]: Start minimizeSevpa. Operand 201 states. [2019-05-23 11:15:37,184 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 201 to 191. [2019-05-23 11:15:37,185 INFO L146 ILogger]: Start removeUnreachable. Operand 191 states. [2019-05-23 11:15:37,185 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 191 states to 191 states and 194 transitions. [2019-05-23 11:15:37,186 INFO L146 ILogger]: Start accepts. Automaton has 191 states and 194 transitions. Word has length 166 [2019-05-23 11:15:37,186 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:37,186 INFO L146 ILogger]: Abstraction has 191 states and 194 transitions. [2019-05-23 11:15:37,186 INFO L146 ILogger]: Interpolant automaton has 33 states. [2019-05-23 11:15:37,186 INFO L146 ILogger]: Start isEmpty. Operand 191 states and 194 transitions. [2019-05-23 11:15:37,187 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 187 [2019-05-23 11:15:37,187 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:37,188 INFO L146 ILogger]: trace histogram [13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 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] [2019-05-23 11:15:37,188 INFO L146 ILogger]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:37,188 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:37,188 INFO L146 ILogger]: Analyzing trace with hash -944719332, now seen corresponding path program 13 times [2019-05-23 11:15:37,188 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:37,189 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:37,189 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:37,190 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:15:37,190 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:37,210 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:37,801 INFO L146 ILogger]: Checked inductivity of 832 backedges. 0 proven. 474 refuted. 0 times theorem prover too weak. 358 trivial. 0 not checked. [2019-05-23 11:15:37,801 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:37,801 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:15:37,810 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:15:37,856 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:37,857 INFO L146 ILogger]: Trace formula consists of 280 conjuncts, 15 conjunts are in the unsatisfiable core [2019-05-23 11:15:37,859 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:15:37,927 INFO L146 ILogger]: Checked inductivity of 832 backedges. 0 proven. 247 refuted. 0 times theorem prover too weak. 585 trivial. 0 not checked. [2019-05-23 11:15:37,946 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:15:37,946 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 16] total 29 [2019-05-23 11:15:37,947 INFO L146 ILogger]: Interpolant automaton has 29 states [2019-05-23 11:15:37,947 INFO L146 ILogger]: Constructing interpolant automaton starting with 29 interpolants. [2019-05-23 11:15:37,948 INFO L146 ILogger]: CoverageRelationStatistics Valid=226, Invalid=586, Unknown=0, NotChecked=0, Total=812 [2019-05-23 11:15:37,948 INFO L146 ILogger]: Start difference. First operand 191 states and 194 transitions. Second operand 29 states. [2019-05-23 11:15:39,119 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:39,120 INFO L146 ILogger]: Finished difference Result 352 states and 359 transitions. [2019-05-23 11:15:39,128 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2019-05-23 11:15:39,128 INFO L146 ILogger]: Start accepts. Automaton has 29 states. Word has length 186 [2019-05-23 11:15:39,129 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:39,130 INFO L146 ILogger]: With dead ends: 352 [2019-05-23 11:15:39,130 INFO L146 ILogger]: Without dead ends: 208 [2019-05-23 11:15:39,131 INFO L146 ILogger]: 0 DeclaredPredicates, 236 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 475 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=899, Invalid=1857, Unknown=0, NotChecked=0, Total=2756 [2019-05-23 11:15:39,132 INFO L146 ILogger]: Start minimizeSevpa. Operand 208 states. [2019-05-23 11:15:39,136 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 208 to 201. [2019-05-23 11:15:39,136 INFO L146 ILogger]: Start removeUnreachable. Operand 201 states. [2019-05-23 11:15:39,137 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 201 states to 201 states and 204 transitions. [2019-05-23 11:15:39,138 INFO L146 ILogger]: Start accepts. Automaton has 201 states and 204 transitions. Word has length 186 [2019-05-23 11:15:39,138 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:39,138 INFO L146 ILogger]: Abstraction has 201 states and 204 transitions. [2019-05-23 11:15:39,138 INFO L146 ILogger]: Interpolant automaton has 29 states. [2019-05-23 11:15:39,139 INFO L146 ILogger]: Start isEmpty. Operand 201 states and 204 transitions. [2019-05-23 11:15:39,139 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 197 [2019-05-23 11:15:39,139 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:39,140 INFO L146 ILogger]: trace histogram [14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 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] [2019-05-23 11:15:39,140 INFO L146 ILogger]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:39,140 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:39,141 INFO L146 ILogger]: Analyzing trace with hash 1044667613, now seen corresponding path program 14 times [2019-05-23 11:15:39,141 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:39,141 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:39,141 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:39,142 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:15:39,142 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:39,162 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:40,141 INFO L146 ILogger]: Checked inductivity of 957 backedges. 0 proven. 559 refuted. 0 times theorem prover too weak. 398 trivial. 0 not checked. [2019-05-23 11:15:40,142 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:40,142 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:15:40,151 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:15:40,198 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:15:40,198 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:40,199 INFO L146 ILogger]: Trace formula consists of 294 conjuncts, 16 conjunts are in the unsatisfiable core [2019-05-23 11:15:40,201 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:15:40,302 INFO L146 ILogger]: Checked inductivity of 957 backedges. 0 proven. 287 refuted. 0 times theorem prover too weak. 670 trivial. 0 not checked. [2019-05-23 11:15:40,321 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:15:40,321 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 17] total 31 [2019-05-23 11:15:40,322 INFO L146 ILogger]: Interpolant automaton has 31 states [2019-05-23 11:15:40,322 INFO L146 ILogger]: Constructing interpolant automaton starting with 31 interpolants. [2019-05-23 11:15:40,323 INFO L146 ILogger]: CoverageRelationStatistics Valid=257, Invalid=673, Unknown=0, NotChecked=0, Total=930 [2019-05-23 11:15:40,323 INFO L146 ILogger]: Start difference. First operand 201 states and 204 transitions. Second operand 31 states. [2019-05-23 11:15:41,054 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:41,054 INFO L146 ILogger]: Finished difference Result 369 states and 376 transitions. [2019-05-23 11:15:41,054 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2019-05-23 11:15:41,055 INFO L146 ILogger]: Start accepts. Automaton has 31 states. Word has length 196 [2019-05-23 11:15:41,055 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:41,056 INFO L146 ILogger]: With dead ends: 369 [2019-05-23 11:15:41,056 INFO L146 ILogger]: Without dead ends: 218 [2019-05-23 11:15:41,059 INFO L146 ILogger]: 0 DeclaredPredicates, 250 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 554 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1038, Invalid=2154, Unknown=0, NotChecked=0, Total=3192 [2019-05-23 11:15:41,059 INFO L146 ILogger]: Start minimizeSevpa. Operand 218 states. [2019-05-23 11:15:41,063 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 218 to 211. [2019-05-23 11:15:41,063 INFO L146 ILogger]: Start removeUnreachable. Operand 211 states. [2019-05-23 11:15:41,064 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 211 states to 211 states and 214 transitions. [2019-05-23 11:15:41,064 INFO L146 ILogger]: Start accepts. Automaton has 211 states and 214 transitions. Word has length 196 [2019-05-23 11:15:41,064 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:41,065 INFO L146 ILogger]: Abstraction has 211 states and 214 transitions. [2019-05-23 11:15:41,065 INFO L146 ILogger]: Interpolant automaton has 31 states. [2019-05-23 11:15:41,065 INFO L146 ILogger]: Start isEmpty. Operand 211 states and 214 transitions. [2019-05-23 11:15:41,066 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 207 [2019-05-23 11:15:41,066 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:41,066 INFO L146 ILogger]: trace histogram [15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 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] [2019-05-23 11:15:41,067 INFO L146 ILogger]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:41,067 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:41,067 INFO L146 ILogger]: Analyzing trace with hash -1650713284, now seen corresponding path program 15 times [2019-05-23 11:15:41,067 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:41,067 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:41,068 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:41,068 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:15:41,069 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:41,095 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:41,557 INFO L146 ILogger]: Checked inductivity of 1092 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 441 trivial. 0 not checked. [2019-05-23 11:15:41,558 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:41,558 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:15:41,566 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:15:41,778 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2019-05-23 11:15:41,778 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:41,780 INFO L146 ILogger]: Trace formula consists of 192 conjuncts, 14 conjunts are in the unsatisfiable core [2019-05-23 11:15:41,782 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:15:41,961 INFO L146 ILogger]: Checked inductivity of 1092 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 981 trivial. 0 not checked. [2019-05-23 11:15:41,981 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:15:41,981 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 15] total 38 [2019-05-23 11:15:41,982 INFO L146 ILogger]: Interpolant automaton has 38 states [2019-05-23 11:15:41,982 INFO L146 ILogger]: Constructing interpolant automaton starting with 38 interpolants. [2019-05-23 11:15:41,983 INFO L146 ILogger]: CoverageRelationStatistics Valid=299, Invalid=1107, Unknown=0, NotChecked=0, Total=1406 [2019-05-23 11:15:41,983 INFO L146 ILogger]: Start difference. First operand 211 states and 214 transitions. Second operand 38 states. [2019-05-23 11:15:45,788 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:45,788 INFO L146 ILogger]: Finished difference Result 295 states and 301 transitions. [2019-05-23 11:15:45,789 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2019-05-23 11:15:45,789 INFO L146 ILogger]: Start accepts. Automaton has 38 states. Word has length 206 [2019-05-23 11:15:45,790 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:45,791 INFO L146 ILogger]: With dead ends: 295 [2019-05-23 11:15:45,792 INFO L146 ILogger]: Without dead ends: 237 [2019-05-23 11:15:45,795 INFO L146 ILogger]: 0 DeclaredPredicates, 276 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1209 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=1445, Invalid=4561, Unknown=0, NotChecked=0, Total=6006 [2019-05-23 11:15:45,796 INFO L146 ILogger]: Start minimizeSevpa. Operand 237 states. [2019-05-23 11:15:45,799 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 237 to 225. [2019-05-23 11:15:45,800 INFO L146 ILogger]: Start removeUnreachable. Operand 225 states. [2019-05-23 11:15:45,801 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 225 states to 225 states and 228 transitions. [2019-05-23 11:15:45,801 INFO L146 ILogger]: Start accepts. Automaton has 225 states and 228 transitions. Word has length 206 [2019-05-23 11:15:45,801 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:45,801 INFO L146 ILogger]: Abstraction has 225 states and 228 transitions. [2019-05-23 11:15:45,801 INFO L146 ILogger]: Interpolant automaton has 38 states. [2019-05-23 11:15:45,802 INFO L146 ILogger]: Start isEmpty. Operand 225 states and 228 transitions. [2019-05-23 11:15:45,803 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 221 [2019-05-23 11:15:45,803 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:45,803 INFO L146 ILogger]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 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] [2019-05-23 11:15:45,804 INFO L146 ILogger]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:45,804 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:45,804 INFO L146 ILogger]: Analyzing trace with hash -482674763, now seen corresponding path program 16 times [2019-05-23 11:15:45,804 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:45,805 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:45,805 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:45,806 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:15:45,806 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:45,830 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:46,372 INFO L146 ILogger]: Checked inductivity of 1234 backedges. 0 proven. 750 refuted. 0 times theorem prover too weak. 484 trivial. 0 not checked. [2019-05-23 11:15:46,372 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:46,372 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:15:46,383 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:15:46,463 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:15:46,463 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:46,465 INFO L146 ILogger]: Trace formula consists of 328 conjuncts, 17 conjunts are in the unsatisfiable core [2019-05-23 11:15:46,468 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:15:46,503 INFO L146 ILogger]: Checked inductivity of 1234 backedges. 0 proven. 330 refuted. 0 times theorem prover too weak. 904 trivial. 0 not checked. [2019-05-23 11:15:46,522 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:15:46,522 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 18] total 34 [2019-05-23 11:15:46,523 INFO L146 ILogger]: Interpolant automaton has 34 states [2019-05-23 11:15:46,523 INFO L146 ILogger]: Constructing interpolant automaton starting with 34 interpolants. [2019-05-23 11:15:46,524 INFO L146 ILogger]: CoverageRelationStatistics Valid=306, Invalid=816, Unknown=0, NotChecked=0, Total=1122 [2019-05-23 11:15:46,524 INFO L146 ILogger]: Start difference. First operand 225 states and 228 transitions. Second operand 34 states. [2019-05-23 11:15:48,535 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:48,536 INFO L146 ILogger]: Finished difference Result 414 states and 421 transitions. [2019-05-23 11:15:48,537 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2019-05-23 11:15:48,537 INFO L146 ILogger]: Start accepts. Automaton has 34 states. Word has length 220 [2019-05-23 11:15:48,538 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:48,539 INFO L146 ILogger]: With dead ends: 414 [2019-05-23 11:15:48,539 INFO L146 ILogger]: Without dead ends: 242 [2019-05-23 11:15:48,540 INFO L146 ILogger]: 0 DeclaredPredicates, 282 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 714 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1297, Invalid=2735, Unknown=0, NotChecked=0, Total=4032 [2019-05-23 11:15:48,540 INFO L146 ILogger]: Start minimizeSevpa. Operand 242 states. [2019-05-23 11:15:48,543 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 242 to 235. [2019-05-23 11:15:48,544 INFO L146 ILogger]: Start removeUnreachable. Operand 235 states. [2019-05-23 11:15:48,544 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 235 states to 235 states and 238 transitions. [2019-05-23 11:15:48,544 INFO L146 ILogger]: Start accepts. Automaton has 235 states and 238 transitions. Word has length 220 [2019-05-23 11:15:48,545 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:48,545 INFO L146 ILogger]: Abstraction has 235 states and 238 transitions. [2019-05-23 11:15:48,545 INFO L146 ILogger]: Interpolant automaton has 34 states. [2019-05-23 11:15:48,545 INFO L146 ILogger]: Start isEmpty. Operand 235 states and 238 transitions. [2019-05-23 11:15:48,546 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 231 [2019-05-23 11:15:48,546 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:48,546 INFO L146 ILogger]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 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] [2019-05-23 11:15:48,546 INFO L146 ILogger]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:48,546 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:48,546 INFO L146 ILogger]: Analyzing trace with hash -1375238410, now seen corresponding path program 17 times [2019-05-23 11:15:48,547 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:48,547 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:48,547 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:48,547 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:15:48,547 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:48,570 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:49,467 INFO L146 ILogger]: Checked inductivity of 1386 backedges. 0 proven. 856 refuted. 0 times theorem prover too weak. 530 trivial. 0 not checked. [2019-05-23 11:15:49,468 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:49,468 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:15:49,477 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1