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-industry-pattern/array_ptr_partial_init_true-unreach-call.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-7aa59a0 [2019-05-23 11:22:10,587 INFO L146 ILogger]: Resetting all preferences to default values... [2019-05-23 11:22:10,589 INFO L146 ILogger]: Resetting UltimateCore preferences to default values [2019-05-23 11:22:10,601 INFO L146 ILogger]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-05-23 11:22:10,601 INFO L146 ILogger]: Resetting Boogie Preprocessor preferences to default values [2019-05-23 11:22:10,602 INFO L146 ILogger]: Resetting Boogie Procedure Inliner preferences to default values [2019-05-23 11:22:10,604 INFO L146 ILogger]: Resetting Abstract Interpretation preferences to default values [2019-05-23 11:22:10,606 INFO L146 ILogger]: Resetting LassoRanker preferences to default values [2019-05-23 11:22:10,609 INFO L146 ILogger]: Resetting Reaching Definitions preferences to default values [2019-05-23 11:22:10,610 INFO L146 ILogger]: Resetting SyntaxChecker preferences to default values [2019-05-23 11:22:10,611 INFO L146 ILogger]: Büchi Program Product provides no preferences, ignoring... [2019-05-23 11:22:10,612 INFO L146 ILogger]: Resetting LTL2Aut preferences to default values [2019-05-23 11:22:10,613 INFO L146 ILogger]: Resetting PEA to Boogie preferences to default values [2019-05-23 11:22:10,614 INFO L146 ILogger]: Resetting BlockEncodingV2 preferences to default values [2019-05-23 11:22:10,620 INFO L146 ILogger]: Resetting ChcToBoogie preferences to default values [2019-05-23 11:22:10,621 INFO L146 ILogger]: Resetting AutomataScriptInterpreter preferences to default values [2019-05-23 11:22:10,622 INFO L146 ILogger]: Resetting BuchiAutomizer preferences to default values [2019-05-23 11:22:10,628 INFO L146 ILogger]: Resetting CACSL2BoogieTranslator preferences to default values [2019-05-23 11:22:10,633 INFO L146 ILogger]: Resetting CodeCheck preferences to default values [2019-05-23 11:22:10,638 INFO L146 ILogger]: Resetting InvariantSynthesis preferences to default values [2019-05-23 11:22:10,642 INFO L146 ILogger]: Resetting RCFGBuilder preferences to default values [2019-05-23 11:22:10,643 INFO L146 ILogger]: Resetting TraceAbstraction preferences to default values [2019-05-23 11:22:10,646 INFO L146 ILogger]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-05-23 11:22:10,647 INFO L146 ILogger]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-05-23 11:22:10,647 INFO L146 ILogger]: Resetting TreeAutomizer preferences to default values [2019-05-23 11:22:10,648 INFO L146 ILogger]: Resetting IcfgToChc preferences to default values [2019-05-23 11:22:10,648 INFO L146 ILogger]: Resetting IcfgTransformer preferences to default values [2019-05-23 11:22:10,649 INFO L146 ILogger]: ReqToTest provides no preferences, ignoring... [2019-05-23 11:22:10,649 INFO L146 ILogger]: Resetting Boogie Printer preferences to default values [2019-05-23 11:22:10,650 INFO L146 ILogger]: Resetting ChcSmtPrinter preferences to default values [2019-05-23 11:22:10,651 INFO L146 ILogger]: Resetting ReqPrinter preferences to default values [2019-05-23 11:22:10,652 INFO L146 ILogger]: Resetting Witness Printer preferences to default values [2019-05-23 11:22:10,653 INFO L146 ILogger]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-05-23 11:22:10,653 INFO L146 ILogger]: Resetting CDTParser preferences to default values [2019-05-23 11:22:10,653 INFO L146 ILogger]: AutomataScriptParser provides no preferences, ignoring... [2019-05-23 11:22:10,654 INFO L146 ILogger]: ReqParser provides no preferences, ignoring... [2019-05-23 11:22:10,654 INFO L146 ILogger]: Resetting SmtParser preferences to default values [2019-05-23 11:22:10,655 INFO L146 ILogger]: Resetting Witness Parser preferences to default values [2019-05-23 11:22:10,655 INFO L146 ILogger]: Finished resetting all preferences to default values... [2019-05-23 11:22:10,656 INFO L146 ILogger]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-05-23 11:22:10,676 INFO L146 ILogger]: Loading preferences was successful [2019-05-23 11:22:10,676 INFO L146 ILogger]: Preferences different from defaults after loading the file: [2019-05-23 11:22:10,677 INFO L146 ILogger]: Preferences of BlockEncodingV2 differ from their defaults: [2019-05-23 11:22:10,678 INFO L146 ILogger]: * Create parallel compositions if possible=false [2019-05-23 11:22:10,678 INFO L146 ILogger]: * Use SBE=true [2019-05-23 11:22:10,678 INFO L146 ILogger]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-05-23 11:22:10,678 INFO L146 ILogger]: * sizeof long=4 [2019-05-23 11:22:10,678 INFO L146 ILogger]: * Overapproximate operations on floating types=true [2019-05-23 11:22:10,679 INFO L146 ILogger]: * sizeof POINTER=4 [2019-05-23 11:22:10,679 INFO L146 ILogger]: * Check division by zero=IGNORE [2019-05-23 11:22:10,679 INFO L146 ILogger]: * Pointer to allocated memory at dereference=IGNORE [2019-05-23 11:22:10,679 INFO L146 ILogger]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-05-23 11:22:10,679 INFO L146 ILogger]: * Check array bounds for arrays that are off heap=IGNORE [2019-05-23 11:22:10,680 INFO L146 ILogger]: * sizeof long double=12 [2019-05-23 11:22:10,680 INFO L146 ILogger]: * Check if freed pointer was valid=false [2019-05-23 11:22:10,680 INFO L146 ILogger]: * Use constant arrays=true [2019-05-23 11:22:10,680 INFO L146 ILogger]: * Pointer base address is valid at dereference=IGNORE [2019-05-23 11:22:10,680 INFO L146 ILogger]: Preferences of RCFGBuilder differ from their defaults: [2019-05-23 11:22:10,681 INFO L146 ILogger]: * Size of a code block=SequenceOfStatements [2019-05-23 11:22:10,681 INFO L146 ILogger]: * To the following directory=./dump/ [2019-05-23 11:22:10,681 INFO L146 ILogger]: * SMT solver=External_DefaultMode [2019-05-23 11:22:10,681 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-05-23 11:22:10,681 INFO L146 ILogger]: Preferences of TraceAbstraction differ from their defaults: [2019-05-23 11:22:10,682 INFO L146 ILogger]: * Compute Interpolants along a Counterexample=FPandBP [2019-05-23 11:22:10,682 INFO L146 ILogger]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-05-23 11:22:10,682 INFO L146 ILogger]: * Trace refinement strategy=CAMEL [2019-05-23 11:22:10,682 INFO L146 ILogger]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-05-23 11:22:10,682 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-05-23 11:22:10,682 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 11:22:10,713 INFO L146 ILogger]: Repository-Root is: /tmp [2019-05-23 11:22:10,726 INFO L146 ILogger]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-05-23 11:22:10,729 INFO L146 ILogger]: [Toolchain 1]: Toolchain selected. [2019-05-23 11:22:10,731 INFO L146 ILogger]: Initializing CDTParser... [2019-05-23 11:22:10,731 INFO L146 ILogger]: CDTParser initialized [2019-05-23 11:22:10,732 INFO L146 ILogger]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/array-industry-pattern/array_ptr_partial_init_true-unreach-call.i [2019-05-23 11:22:10,787 INFO L146 ILogger]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b60125220/568151aa03fc4e0ba11954dae8ecbe19/FLAG71562e3e8 [2019-05-23 11:22:11,213 INFO L146 ILogger]: Found 1 translation units. [2019-05-23 11:22:11,214 INFO L146 ILogger]: Scanning /storage/repos/svcomp/c/array-industry-pattern/array_ptr_partial_init_true-unreach-call.i [2019-05-23 11:22:11,221 INFO L146 ILogger]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b60125220/568151aa03fc4e0ba11954dae8ecbe19/FLAG71562e3e8 [2019-05-23 11:22:11,582 INFO L146 ILogger]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b60125220/568151aa03fc4e0ba11954dae8ecbe19 [2019-05-23 11:22:11,592 INFO L146 ILogger]: ####################### [Toolchain 1] ####################### [2019-05-23 11:22:11,594 INFO L146 ILogger]: Walking toolchain with 5 elements. [2019-05-23 11:22:11,597 INFO L146 ILogger]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-05-23 11:22:11,597 INFO L146 ILogger]: Initializing CACSL2BoogieTranslator... [2019-05-23 11:22:11,601 INFO L146 ILogger]: CACSL2BoogieTranslator initialized [2019-05-23 11:22:11,602 INFO L146 ILogger]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:22:11" (1/1) ... [2019-05-23 11:22:11,605 INFO L146 ILogger]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a53857c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:22:11, skipping insertion in model container [2019-05-23 11:22:11,605 INFO L146 ILogger]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:22:11" (1/1) ... [2019-05-23 11:22:11,613 INFO L146 ILogger]: Starting translation in SV-COMP mode [2019-05-23 11:22:11,634 INFO L146 ILogger]: Built tables and reachable declarations [2019-05-23 11:22:11,842 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:22:11,857 INFO L146 ILogger]: Completed pre-run [2019-05-23 11:22:11,881 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:22:11,912 INFO L146 ILogger]: Completed translation [2019-05-23 11:22:11,913 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:22:11 WrapperNode [2019-05-23 11:22:11,913 INFO L146 ILogger]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-05-23 11:22:11,915 INFO L146 ILogger]: ------------------------Boogie Procedure Inliner---------------------------- [2019-05-23 11:22:11,915 INFO L146 ILogger]: Initializing Boogie Procedure Inliner... [2019-05-23 11:22:11,915 INFO L146 ILogger]: Boogie Procedure Inliner initialized [2019-05-23 11:22:11,924 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:22:11" (1/1) ... [2019-05-23 11:22:11,937 INFO L146 ILogger]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:22:11" (1/1) ... [2019-05-23 11:22:11,962 INFO L146 ILogger]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-05-23 11:22:11,963 INFO L146 ILogger]: ------------------------Boogie Preprocessor---------------------------- [2019-05-23 11:22:11,963 INFO L146 ILogger]: Initializing Boogie Preprocessor... [2019-05-23 11:22:11,964 INFO L146 ILogger]: Boogie Preprocessor initialized [2019-05-23 11:22:11,976 INFO L146 ILogger]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:22:11" (1/1) ... [2019-05-23 11:22:11,976 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:22:11" (1/1) ... [2019-05-23 11:22:11,978 INFO L146 ILogger]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:22:11" (1/1) ... [2019-05-23 11:22:11,979 INFO L146 ILogger]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:22:11" (1/1) ... [2019-05-23 11:22:11,984 INFO L146 ILogger]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:22:11" (1/1) ... [2019-05-23 11:22:11,993 INFO L146 ILogger]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:22:11" (1/1) ... [2019-05-23 11:22:11,997 INFO L146 ILogger]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:22:11" (1/1) ... [2019-05-23 11:22:11,999 INFO L146 ILogger]: ------------------------ END Boogie Preprocessor---------------------------- [2019-05-23 11:22:12,000 INFO L146 ILogger]: ------------------------RCFGBuilder---------------------------- [2019-05-23 11:22:12,000 INFO L146 ILogger]: Initializing RCFGBuilder... [2019-05-23 11:22:12,001 INFO L146 ILogger]: RCFGBuilder initialized [2019-05-23 11:22:12,008 INFO L146 ILogger]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:22:11" (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 11:22:12,168 INFO L146 ILogger]: Found specification of procedure read~$Pointer$ [2019-05-23 11:22:12,169 INFO L146 ILogger]: Found specification of procedure #Ultimate.allocOnHeap [2019-05-23 11:22:12,169 INFO L146 ILogger]: Found specification of procedure ULTIMATE.start [2019-05-23 11:22:12,169 INFO L146 ILogger]: Found implementation of procedure ULTIMATE.start [2019-05-23 11:22:12,169 INFO L146 ILogger]: Found specification of procedure write~$Pointer$ [2019-05-23 11:22:12,169 INFO L146 ILogger]: Found specification of procedure #Ultimate.allocOnStack [2019-05-23 11:22:12,616 INFO L146 ILogger]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-05-23 11:22:12,616 INFO L146 ILogger]: Removed 9 assume(true) statements. [2019-05-23 11:22:12,617 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:22:12 BoogieIcfgContainer [2019-05-23 11:22:12,617 INFO L146 ILogger]: ------------------------ END RCFGBuilder---------------------------- [2019-05-23 11:22:12,618 INFO L146 ILogger]: ------------------------TraceAbstraction---------------------------- [2019-05-23 11:22:12,618 INFO L146 ILogger]: Initializing TraceAbstraction... [2019-05-23 11:22:12,622 INFO L146 ILogger]: TraceAbstraction initialized [2019-05-23 11:22:12,622 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.05 11:22:11" (1/3) ... [2019-05-23 11:22:12,623 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71ec2fc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:22:12, skipping insertion in model container [2019-05-23 11:22:12,623 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:22:11" (2/3) ... [2019-05-23 11:22:12,623 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71ec2fc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:22:12, skipping insertion in model container [2019-05-23 11:22:12,624 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:22:12" (3/3) ... [2019-05-23 11:22:12,625 INFO L146 ILogger]: Analyzing ICFG array_ptr_partial_init_true-unreach-call.i [2019-05-23 11:22:12,636 INFO L146 ILogger]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-05-23 11:22:12,644 INFO L146 ILogger]: Appying trace abstraction to program that has 1 error locations. [2019-05-23 11:22:12,661 INFO L146 ILogger]: Starting to check reachability of 1 error locations. [2019-05-23 11:22:12,693 INFO L146 ILogger]: Using default assertion order modulation [2019-05-23 11:22:12,694 INFO L146 ILogger]: Interprodecural is true [2019-05-23 11:22:12,694 INFO L146 ILogger]: Hoare is true [2019-05-23 11:22:12,694 INFO L146 ILogger]: Compute interpolants for FPandBP [2019-05-23 11:22:12,695 INFO L146 ILogger]: Backedges is STRAIGHT_LINE [2019-05-23 11:22:12,695 INFO L146 ILogger]: Determinization is PREDICATE_ABSTRACTION [2019-05-23 11:22:12,695 INFO L146 ILogger]: Difference is false [2019-05-23 11:22:12,695 INFO L146 ILogger]: Minimize is MINIMIZE_SEVPA [2019-05-23 11:22:12,695 INFO L146 ILogger]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-05-23 11:22:12,710 INFO L146 ILogger]: Start isEmpty. Operand 37 states. [2019-05-23 11:22:12,717 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 20 [2019-05-23 11:22:12,717 INFO L146 ILogger]: Found error trace [2019-05-23 11:22:12,718 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:22:12,720 INFO L146 ILogger]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:22:12,724 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:22:12,725 INFO L146 ILogger]: Analyzing trace with hash -1155644659, now seen corresponding path program 1 times [2019-05-23 11:22:12,726 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:22:12,726 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:22:12,774 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:12,774 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:22:12,774 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:12,816 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:22:12,852 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 11:22:12,854 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:22:12,854 INFO L146 ILogger]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-05-23 11:22:12,859 INFO L146 ILogger]: Interpolant automaton has 2 states [2019-05-23 11:22:12,869 INFO L146 ILogger]: Constructing interpolant automaton starting with 2 interpolants. [2019-05-23 11:22:12,870 INFO L146 ILogger]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-05-23 11:22:12,872 INFO L146 ILogger]: Start difference. First operand 37 states. Second operand 2 states. [2019-05-23 11:22:12,887 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:22:12,888 INFO L146 ILogger]: Finished difference Result 61 states and 71 transitions. [2019-05-23 11:22:12,888 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-05-23 11:22:12,889 INFO L146 ILogger]: Start accepts. Automaton has 2 states. Word has length 19 [2019-05-23 11:22:12,889 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:22:12,898 INFO L146 ILogger]: With dead ends: 61 [2019-05-23 11:22:12,898 INFO L146 ILogger]: Without dead ends: 33 [2019-05-23 11:22:12,903 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 11:22:12,917 INFO L146 ILogger]: Start minimizeSevpa. Operand 33 states. [2019-05-23 11:22:12,930 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 33 to 33. [2019-05-23 11:22:12,932 INFO L146 ILogger]: Start removeUnreachable. Operand 33 states. [2019-05-23 11:22:12,933 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2019-05-23 11:22:12,935 INFO L146 ILogger]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 19 [2019-05-23 11:22:12,935 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:22:12,935 INFO L146 ILogger]: Abstraction has 33 states and 35 transitions. [2019-05-23 11:22:12,935 INFO L146 ILogger]: Interpolant automaton has 2 states. [2019-05-23 11:22:12,935 INFO L146 ILogger]: Start isEmpty. Operand 33 states and 35 transitions. [2019-05-23 11:22:12,936 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 20 [2019-05-23 11:22:12,936 INFO L146 ILogger]: Found error trace [2019-05-23 11:22:12,937 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:22:12,937 INFO L146 ILogger]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:22:12,937 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:22:12,937 INFO L146 ILogger]: Analyzing trace with hash -1268276166, now seen corresponding path program 1 times [2019-05-23 11:22:12,937 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:22:12,938 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:22:12,939 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:12,939 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:22:12,939 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:12,959 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:22:13,006 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 11:22:13,006 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:22:13,006 INFO L146 ILogger]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-05-23 11:22:13,008 INFO L146 ILogger]: Interpolant automaton has 3 states [2019-05-23 11:22:13,008 INFO L146 ILogger]: Constructing interpolant automaton starting with 3 interpolants. [2019-05-23 11:22:13,008 INFO L146 ILogger]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-05-23 11:22:13,008 INFO L146 ILogger]: Start difference. First operand 33 states and 35 transitions. Second operand 3 states. [2019-05-23 11:22:13,161 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:22:13,161 INFO L146 ILogger]: Finished difference Result 73 states and 78 transitions. [2019-05-23 11:22:13,161 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-05-23 11:22:13,162 INFO L146 ILogger]: Start accepts. Automaton has 3 states. Word has length 19 [2019-05-23 11:22:13,162 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:22:13,164 INFO L146 ILogger]: With dead ends: 73 [2019-05-23 11:22:13,164 INFO L146 ILogger]: Without dead ends: 53 [2019-05-23 11:22:13,165 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 11:22:13,165 INFO L146 ILogger]: Start minimizeSevpa. Operand 53 states. [2019-05-23 11:22:13,172 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 53 to 35. [2019-05-23 11:22:13,172 INFO L146 ILogger]: Start removeUnreachable. Operand 35 states. [2019-05-23 11:22:13,174 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2019-05-23 11:22:13,175 INFO L146 ILogger]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 19 [2019-05-23 11:22:13,175 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:22:13,175 INFO L146 ILogger]: Abstraction has 35 states and 37 transitions. [2019-05-23 11:22:13,175 INFO L146 ILogger]: Interpolant automaton has 3 states. [2019-05-23 11:22:13,175 INFO L146 ILogger]: Start isEmpty. Operand 35 states and 37 transitions. [2019-05-23 11:22:13,176 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 31 [2019-05-23 11:22:13,176 INFO L146 ILogger]: Found error trace [2019-05-23 11:22:13,177 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] [2019-05-23 11:22:13,177 INFO L146 ILogger]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:22:13,177 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:22:13,177 INFO L146 ILogger]: Analyzing trace with hash 510962159, now seen corresponding path program 1 times [2019-05-23 11:22:13,178 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:22:13,178 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:22:13,179 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:13,180 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:22:13,180 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:13,195 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:22:13,293 INFO L146 ILogger]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-05-23 11:22:13,293 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:22:13,293 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 11:22:13,316 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:22:13,369 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:22:13,372 INFO L146 ILogger]: Trace formula consists of 66 conjuncts, 4 conjunts are in the unsatisfiable core [2019-05-23 11:22:13,380 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:22:13,555 INFO L146 ILogger]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-05-23 11:22:13,583 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:22:13,583 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2019-05-23 11:22:13,584 INFO L146 ILogger]: Interpolant automaton has 7 states [2019-05-23 11:22:13,584 INFO L146 ILogger]: Constructing interpolant automaton starting with 7 interpolants. [2019-05-23 11:22:13,585 INFO L146 ILogger]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-05-23 11:22:13,585 INFO L146 ILogger]: Start difference. First operand 35 states and 37 transitions. Second operand 7 states. [2019-05-23 11:22:13,813 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:22:13,813 INFO L146 ILogger]: Finished difference Result 79 states and 83 transitions. [2019-05-23 11:22:13,814 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-05-23 11:22:13,814 INFO L146 ILogger]: Start accepts. Automaton has 7 states. Word has length 30 [2019-05-23 11:22:13,815 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:22:13,815 INFO L146 ILogger]: With dead ends: 79 [2019-05-23 11:22:13,816 INFO L146 ILogger]: Without dead ends: 58 [2019-05-23 11:22:13,816 INFO L146 ILogger]: 0 DeclaredPredicates, 36 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:22:13,817 INFO L146 ILogger]: Start minimizeSevpa. Operand 58 states. [2019-05-23 11:22:13,821 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 58 to 40. [2019-05-23 11:22:13,822 INFO L146 ILogger]: Start removeUnreachable. Operand 40 states. [2019-05-23 11:22:13,823 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 40 states to 40 states and 42 transitions. [2019-05-23 11:22:13,823 INFO L146 ILogger]: Start accepts. Automaton has 40 states and 42 transitions. Word has length 30 [2019-05-23 11:22:13,823 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:22:13,824 INFO L146 ILogger]: Abstraction has 40 states and 42 transitions. [2019-05-23 11:22:13,824 INFO L146 ILogger]: Interpolant automaton has 7 states. [2019-05-23 11:22:13,824 INFO L146 ILogger]: Start isEmpty. Operand 40 states and 42 transitions. [2019-05-23 11:22:13,825 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 36 [2019-05-23 11:22:13,825 INFO L146 ILogger]: Found error trace [2019-05-23 11:22:13,825 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:22:13,825 INFO L146 ILogger]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:22:13,826 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:22:13,826 INFO L146 ILogger]: Analyzing trace with hash -1949054762, now seen corresponding path program 2 times [2019-05-23 11:22:13,826 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:22:13,826 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:22:13,827 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:13,828 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:22:13,828 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:13,846 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:22:14,023 INFO L146 ILogger]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-05-23 11:22:14,023 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:22:14,023 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 11:22:14,039 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:22:14,086 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:22:14,086 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:22:14,087 INFO L146 ILogger]: Trace formula consists of 74 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 11:22:14,089 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:22:14,208 INFO L146 ILogger]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-05-23 11:22:14,231 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:22:14,231 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7] total 9 [2019-05-23 11:22:14,231 INFO L146 ILogger]: Interpolant automaton has 9 states [2019-05-23 11:22:14,232 INFO L146 ILogger]: Constructing interpolant automaton starting with 9 interpolants. [2019-05-23 11:22:14,232 INFO L146 ILogger]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:22:14,232 INFO L146 ILogger]: Start difference. First operand 40 states and 42 transitions. Second operand 9 states. [2019-05-23 11:22:14,839 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:22:14,839 INFO L146 ILogger]: Finished difference Result 90 states and 95 transitions. [2019-05-23 11:22:14,841 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-05-23 11:22:14,841 INFO L146 ILogger]: Start accepts. Automaton has 9 states. Word has length 35 [2019-05-23 11:22:14,842 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:22:14,842 INFO L146 ILogger]: With dead ends: 90 [2019-05-23 11:22:14,842 INFO L146 ILogger]: Without dead ends: 69 [2019-05-23 11:22:14,843 INFO L146 ILogger]: 0 DeclaredPredicates, 45 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2019-05-23 11:22:14,844 INFO L146 ILogger]: Start minimizeSevpa. Operand 69 states. [2019-05-23 11:22:14,848 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 69 to 51. [2019-05-23 11:22:14,849 INFO L146 ILogger]: Start removeUnreachable. Operand 51 states. [2019-05-23 11:22:14,849 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 51 states to 51 states and 53 transitions. [2019-05-23 11:22:14,850 INFO L146 ILogger]: Start accepts. Automaton has 51 states and 53 transitions. Word has length 35 [2019-05-23 11:22:14,850 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:22:14,850 INFO L146 ILogger]: Abstraction has 51 states and 53 transitions. [2019-05-23 11:22:14,850 INFO L146 ILogger]: Interpolant automaton has 9 states. [2019-05-23 11:22:14,850 INFO L146 ILogger]: Start isEmpty. Operand 51 states and 53 transitions. [2019-05-23 11:22:14,851 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 47 [2019-05-23 11:22:14,852 INFO L146 ILogger]: Found error trace [2019-05-23 11:22:14,852 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 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] [2019-05-23 11:22:14,852 INFO L146 ILogger]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:22:14,852 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:22:14,853 INFO L146 ILogger]: Analyzing trace with hash -1393862773, now seen corresponding path program 3 times [2019-05-23 11:22:14,853 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:22:14,853 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:22:14,854 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:14,854 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:22:14,854 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:14,882 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:22:15,037 INFO L146 ILogger]: Checked inductivity of 26 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-05-23 11:22:15,038 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:22:15,038 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 11:22:15,058 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:22:15,106 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-05-23 11:22:15,106 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:22:15,107 INFO L146 ILogger]: Trace formula consists of 90 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 11:22:15,110 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:22:15,196 INFO L146 ILogger]: Checked inductivity of 26 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-05-23 11:22:15,216 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:22:15,217 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 12 [2019-05-23 11:22:15,217 INFO L146 ILogger]: Interpolant automaton has 12 states [2019-05-23 11:22:15,217 INFO L146 ILogger]: Constructing interpolant automaton starting with 12 interpolants. [2019-05-23 11:22:15,218 INFO L146 ILogger]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-05-23 11:22:15,218 INFO L146 ILogger]: Start difference. First operand 51 states and 53 transitions. Second operand 12 states. [2019-05-23 11:22:15,706 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:22:15,706 INFO L146 ILogger]: Finished difference Result 107 states and 112 transitions. [2019-05-23 11:22:15,707 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-05-23 11:22:15,707 INFO L146 ILogger]: Start accepts. Automaton has 12 states. Word has length 46 [2019-05-23 11:22:15,707 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:22:15,709 INFO L146 ILogger]: With dead ends: 107 [2019-05-23 11:22:15,709 INFO L146 ILogger]: Without dead ends: 80 [2019-05-23 11:22:15,710 INFO L146 ILogger]: 0 DeclaredPredicates, 64 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=123, Invalid=339, Unknown=0, NotChecked=0, Total=462 [2019-05-23 11:22:15,711 INFO L146 ILogger]: Start minimizeSevpa. Operand 80 states. [2019-05-23 11:22:15,716 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 80 to 62. [2019-05-23 11:22:15,717 INFO L146 ILogger]: Start removeUnreachable. Operand 62 states. [2019-05-23 11:22:15,718 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 62 states to 62 states and 64 transitions. [2019-05-23 11:22:15,718 INFO L146 ILogger]: Start accepts. Automaton has 62 states and 64 transitions. Word has length 46 [2019-05-23 11:22:15,718 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:22:15,718 INFO L146 ILogger]: Abstraction has 62 states and 64 transitions. [2019-05-23 11:22:15,718 INFO L146 ILogger]: Interpolant automaton has 12 states. [2019-05-23 11:22:15,719 INFO L146 ILogger]: Start isEmpty. Operand 62 states and 64 transitions. [2019-05-23 11:22:15,719 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 58 [2019-05-23 11:22:15,720 INFO L146 ILogger]: Found error trace [2019-05-23 11:22:15,720 INFO L146 ILogger]: trace histogram [4, 4, 4, 4, 4, 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] [2019-05-23 11:22:15,720 INFO L146 ILogger]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:22:15,720 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:22:15,721 INFO L146 ILogger]: Analyzing trace with hash 927979374, now seen corresponding path program 4 times [2019-05-23 11:22:15,721 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:22:15,721 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:22:15,722 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:15,722 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:22:15,722 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:15,748 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:22:15,909 INFO L146 ILogger]: Checked inductivity of 55 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-05-23 11:22:15,909 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:22:15,909 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 11:22:15,918 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:22:15,951 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:22:15,951 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:22:15,952 INFO L146 ILogger]: Trace formula consists of 104 conjuncts, 20 conjunts are in the unsatisfiable core [2019-05-23 11:22:15,956 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:22:16,137 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2019-05-23 11:22:16,137 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:22:16,149 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:22:16,150 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:22:16,150 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:23, output treesize:16 [2019-05-23 11:22:16,279 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:22:16,280 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 47 [2019-05-23 11:22:16,285 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:22:16,313 INFO L146 ILogger]: treesize reduction 24, result has 48.9 percent of original size [2019-05-23 11:22:16,314 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:22:16,314 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:27, output treesize:12 [2019-05-23 11:22:16,409 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:22:16,410 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 47 [2019-05-23 11:22:16,411 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:22:16,446 INFO L146 ILogger]: treesize reduction 24, result has 48.9 percent of original size [2019-05-23 11:22:16,447 INFO L146 ILogger]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:22:16,448 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 3 variables, input treesize:27, output treesize:8 [2019-05-23 11:22:16,480 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2019-05-23 11:22:16,481 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:22:16,483 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:22:16,483 INFO L146 ILogger]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:22:16,483 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 3 variables, input treesize:16, output treesize:4 [2019-05-23 11:22:16,689 INFO L146 ILogger]: Checked inductivity of 55 backedges. 5 proven. 16 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-05-23 11:22:16,714 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:22:16,714 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13] total 21 [2019-05-23 11:22:16,715 INFO L146 ILogger]: Interpolant automaton has 21 states [2019-05-23 11:22:16,715 INFO L146 ILogger]: Constructing interpolant automaton starting with 21 interpolants. [2019-05-23 11:22:16,715 INFO L146 ILogger]: CoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2019-05-23 11:22:16,716 INFO L146 ILogger]: Start difference. First operand 62 states and 64 transitions. Second operand 21 states. [2019-05-23 11:22:17,574 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:22:17,575 INFO L146 ILogger]: Finished difference Result 117 states and 122 transitions. [2019-05-23 11:22:17,575 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2019-05-23 11:22:17,575 INFO L146 ILogger]: Start accepts. Automaton has 21 states. Word has length 57 [2019-05-23 11:22:17,576 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:22:17,577 INFO L146 ILogger]: With dead ends: 117 [2019-05-23 11:22:17,577 INFO L146 ILogger]: Without dead ends: 84 [2019-05-23 11:22:17,579 INFO L146 ILogger]: 0 DeclaredPredicates, 86 GetRequests, 47 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 355 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=265, Invalid=1295, Unknown=0, NotChecked=0, Total=1560 [2019-05-23 11:22:17,579 INFO L146 ILogger]: Start minimizeSevpa. Operand 84 states. [2019-05-23 11:22:17,584 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 84 to 73. [2019-05-23 11:22:17,585 INFO L146 ILogger]: Start removeUnreachable. Operand 73 states. [2019-05-23 11:22:17,585 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 73 states to 73 states and 75 transitions. [2019-05-23 11:22:17,586 INFO L146 ILogger]: Start accepts. Automaton has 73 states and 75 transitions. Word has length 57 [2019-05-23 11:22:17,586 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:22:17,586 INFO L146 ILogger]: Abstraction has 73 states and 75 transitions. [2019-05-23 11:22:17,586 INFO L146 ILogger]: Interpolant automaton has 21 states. [2019-05-23 11:22:17,586 INFO L146 ILogger]: Start isEmpty. Operand 73 states and 75 transitions. [2019-05-23 11:22:17,587 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 73 [2019-05-23 11:22:17,588 INFO L146 ILogger]: Found error trace [2019-05-23 11:22:17,588 INFO L146 ILogger]: trace histogram [5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:22:17,588 INFO L146 ILogger]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:22:17,588 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:22:17,589 INFO L146 ILogger]: Analyzing trace with hash 1149227322, now seen corresponding path program 1 times [2019-05-23 11:22:17,589 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:22:17,589 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:22:17,590 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:17,590 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:22:17,590 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:17,620 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:22:17,844 INFO L146 ILogger]: Checked inductivity of 82 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-05-23 11:22:17,844 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:22:17,844 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 11:22:17,856 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:22:17,894 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:22:17,895 INFO L146 ILogger]: Trace formula consists of 147 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:22:17,899 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:22:18,259 INFO L146 ILogger]: Checked inductivity of 82 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-05-23 11:22:18,288 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:22:18,288 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 15 [2019-05-23 11:22:18,288 INFO L146 ILogger]: Interpolant automaton has 15 states [2019-05-23 11:22:18,289 INFO L146 ILogger]: Constructing interpolant automaton starting with 15 interpolants. [2019-05-23 11:22:18,289 INFO L146 ILogger]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2019-05-23 11:22:18,289 INFO L146 ILogger]: Start difference. First operand 73 states and 75 transitions. Second operand 15 states. [2019-05-23 11:22:18,595 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:22:18,595 INFO L146 ILogger]: Finished difference Result 123 states and 127 transitions. [2019-05-23 11:22:18,595 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-05-23 11:22:18,595 INFO L146 ILogger]: Start accepts. Automaton has 15 states. Word has length 72 [2019-05-23 11:22:18,596 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:22:18,597 INFO L146 ILogger]: With dead ends: 123 [2019-05-23 11:22:18,597 INFO L146 ILogger]: Without dead ends: 84 [2019-05-23 11:22:18,598 INFO L146 ILogger]: 0 DeclaredPredicates, 94 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=196, Invalid=404, Unknown=0, NotChecked=0, Total=600 [2019-05-23 11:22:18,598 INFO L146 ILogger]: Start minimizeSevpa. Operand 84 states. [2019-05-23 11:22:18,603 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 84 to 78. [2019-05-23 11:22:18,604 INFO L146 ILogger]: Start removeUnreachable. Operand 78 states. [2019-05-23 11:22:18,604 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 78 states to 78 states and 80 transitions. [2019-05-23 11:22:18,604 INFO L146 ILogger]: Start accepts. Automaton has 78 states and 80 transitions. Word has length 72 [2019-05-23 11:22:18,605 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:22:18,605 INFO L146 ILogger]: Abstraction has 78 states and 80 transitions. [2019-05-23 11:22:18,605 INFO L146 ILogger]: Interpolant automaton has 15 states. [2019-05-23 11:22:18,605 INFO L146 ILogger]: Start isEmpty. Operand 78 states and 80 transitions. [2019-05-23 11:22:18,606 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 78 [2019-05-23 11:22:18,606 INFO L146 ILogger]: Found error trace [2019-05-23 11:22:18,607 INFO L146 ILogger]: trace histogram [6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:22:18,607 INFO L146 ILogger]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:22:18,607 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:22:18,607 INFO L146 ILogger]: Analyzing trace with hash 337928033, now seen corresponding path program 2 times [2019-05-23 11:22:18,608 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:22:18,608 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:22:18,609 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:18,609 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:22:18,609 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:18,634 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:22:18,783 INFO L146 ILogger]: Checked inductivity of 108 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-05-23 11:22:18,783 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:22:18,783 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 11:22:18,793 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:22:18,833 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:22:18,833 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:22:18,834 INFO L146 ILogger]: Trace formula consists of 155 conjuncts, 14 conjunts are in the unsatisfiable core [2019-05-23 11:22:18,837 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:22:18,907 INFO L146 ILogger]: Checked inductivity of 108 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-05-23 11:22:18,926 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:22:18,927 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2019-05-23 11:22:18,927 INFO L146 ILogger]: Interpolant automaton has 17 states [2019-05-23 11:22:18,927 INFO L146 ILogger]: Constructing interpolant automaton starting with 17 interpolants. [2019-05-23 11:22:18,928 INFO L146 ILogger]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2019-05-23 11:22:18,928 INFO L146 ILogger]: Start difference. First operand 78 states and 80 transitions. Second operand 17 states. [2019-05-23 11:22:19,279 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:22:19,279 INFO L146 ILogger]: Finished difference Result 128 states and 132 transitions. [2019-05-23 11:22:19,283 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-05-23 11:22:19,284 INFO L146 ILogger]: Start accepts. Automaton has 17 states. Word has length 77 [2019-05-23 11:22:19,284 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:22:19,285 INFO L146 ILogger]: With dead ends: 128 [2019-05-23 11:22:19,285 INFO L146 ILogger]: Without dead ends: 89 [2019-05-23 11:22:19,286 INFO L146 ILogger]: 0 DeclaredPredicates, 103 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=263, Invalid=549, Unknown=0, NotChecked=0, Total=812 [2019-05-23 11:22:19,286 INFO L146 ILogger]: Start minimizeSevpa. Operand 89 states. [2019-05-23 11:22:19,291 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 89 to 83. [2019-05-23 11:22:19,291 INFO L146 ILogger]: Start removeUnreachable. Operand 83 states. [2019-05-23 11:22:19,292 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 83 states to 83 states and 85 transitions. [2019-05-23 11:22:19,292 INFO L146 ILogger]: Start accepts. Automaton has 83 states and 85 transitions. Word has length 77 [2019-05-23 11:22:19,292 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:22:19,292 INFO L146 ILogger]: Abstraction has 83 states and 85 transitions. [2019-05-23 11:22:19,293 INFO L146 ILogger]: Interpolant automaton has 17 states. [2019-05-23 11:22:19,293 INFO L146 ILogger]: Start isEmpty. Operand 83 states and 85 transitions. [2019-05-23 11:22:19,294 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 83 [2019-05-23 11:22:19,294 INFO L146 ILogger]: Found error trace [2019-05-23 11:22:19,294 INFO L146 ILogger]: trace histogram [7, 7, 7, 7, 7, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:22:19,295 INFO L146 ILogger]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:22:19,295 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:22:19,295 INFO L146 ILogger]: Analyzing trace with hash -38432358, now seen corresponding path program 3 times [2019-05-23 11:22:19,295 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:22:19,295 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:22:19,296 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:19,296 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:22:19,297 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:19,320 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:22:19,644 INFO L146 ILogger]: Checked inductivity of 139 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-05-23 11:22:19,645 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:22:19,645 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 11:22:19,654 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:22:19,682 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-05-23 11:22:19,683 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:22:19,683 INFO L146 ILogger]: Trace formula consists of 131 conjuncts, 8 conjunts are in the unsatisfiable core [2019-05-23 11:22:19,687 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:22:19,797 INFO L146 ILogger]: Checked inductivity of 139 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2019-05-23 11:22:19,818 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:22:19,819 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 9] total 21 [2019-05-23 11:22:19,819 INFO L146 ILogger]: Interpolant automaton has 21 states [2019-05-23 11:22:19,819 INFO L146 ILogger]: Constructing interpolant automaton starting with 21 interpolants. [2019-05-23 11:22:19,820 INFO L146 ILogger]: CoverageRelationStatistics Valid=99, Invalid=321, Unknown=0, NotChecked=0, Total=420 [2019-05-23 11:22:19,820 INFO L146 ILogger]: Start difference. First operand 83 states and 85 transitions. Second operand 21 states. [2019-05-23 11:22:20,535 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:22:20,536 INFO L146 ILogger]: Finished difference Result 143 states and 148 transitions. [2019-05-23 11:22:20,536 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2019-05-23 11:22:20,536 INFO L146 ILogger]: Start accepts. Automaton has 21 states. Word has length 82 [2019-05-23 11:22:20,537 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:22:20,538 INFO L146 ILogger]: With dead ends: 143 [2019-05-23 11:22:20,538 INFO L146 ILogger]: Without dead ends: 104 [2019-05-23 11:22:20,540 INFO L146 ILogger]: 0 DeclaredPredicates, 118 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 309 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=417, Invalid=1223, Unknown=0, NotChecked=0, Total=1640 [2019-05-23 11:22:20,540 INFO L146 ILogger]: Start minimizeSevpa. Operand 104 states. [2019-05-23 11:22:20,545 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 104 to 94. [2019-05-23 11:22:20,545 INFO L146 ILogger]: Start removeUnreachable. Operand 94 states. [2019-05-23 11:22:20,546 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 94 states to 94 states and 96 transitions. [2019-05-23 11:22:20,546 INFO L146 ILogger]: Start accepts. Automaton has 94 states and 96 transitions. Word has length 82 [2019-05-23 11:22:20,547 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:22:20,547 INFO L146 ILogger]: Abstraction has 94 states and 96 transitions. [2019-05-23 11:22:20,547 INFO L146 ILogger]: Interpolant automaton has 21 states. [2019-05-23 11:22:20,547 INFO L146 ILogger]: Start isEmpty. Operand 94 states and 96 transitions. [2019-05-23 11:22:20,548 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 94 [2019-05-23 11:22:20,549 INFO L146 ILogger]: Found error trace [2019-05-23 11:22:20,549 INFO L146 ILogger]: trace histogram [8, 8, 8, 8, 8, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:22:20,549 INFO L146 ILogger]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:22:20,549 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:22:20,549 INFO L146 ILogger]: Analyzing trace with hash 1769996797, now seen corresponding path program 4 times [2019-05-23 11:22:20,550 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:22:20,550 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:22:20,551 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:20,551 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:22:20,551 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:20,572 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:22:20,767 INFO L146 ILogger]: Checked inductivity of 194 backedges. 0 proven. 148 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-05-23 11:22:20,768 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:22:20,768 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 11:22:20,781 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:22:20,812 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:22:20,812 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:22:20,814 INFO L146 ILogger]: Trace formula consists of 163 conjuncts, 34 conjunts are in the unsatisfiable core [2019-05-23 11:22:20,820 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:22:20,887 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2019-05-23 11:22:20,888 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:22:20,897 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:22:20,898 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:22:20,899 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:23, output treesize:16 [2019-05-23 11:22:21,040 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:22:21,041 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 55 [2019-05-23 11:22:21,043 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:22:21,067 INFO L146 ILogger]: treesize reduction 30, result has 49.2 percent of original size [2019-05-23 11:22:21,068 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:22:21,068 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:33, output treesize:26 [2019-05-23 11:22:21,286 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:22:21,287 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 120 [2019-05-23 11:22:21,299 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:22:21,416 WARN L146 ILogger]: Spent 115.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 29 [2019-05-23 11:22:21,417 INFO L146 ILogger]: treesize reduction 167, result has 20.5 percent of original size [2019-05-23 11:22:21,418 INFO L146 ILogger]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-05-23 11:22:21,419 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 4 variables, input treesize:46, output treesize:26 [2019-05-23 11:22:22,101 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:22:22,102 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 26 [2019-05-23 11:22:22,103 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:22:22,118 INFO L146 ILogger]: treesize reduction 15, result has 34.8 percent of original size [2019-05-23 11:22:22,119 INFO L146 ILogger]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:22:22,119 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 4 variables, input treesize:35, output treesize:4 [2019-05-23 11:22:22,234 INFO L146 ILogger]: Checked inductivity of 194 backedges. 4 proven. 42 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2019-05-23 11:22:22,253 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:22:22,254 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 22] total 38 [2019-05-23 11:22:22,254 INFO L146 ILogger]: Interpolant automaton has 38 states [2019-05-23 11:22:22,254 INFO L146 ILogger]: Constructing interpolant automaton starting with 38 interpolants. [2019-05-23 11:22:22,255 INFO L146 ILogger]: CoverageRelationStatistics Valid=214, Invalid=1192, Unknown=0, NotChecked=0, Total=1406 [2019-05-23 11:22:22,255 INFO L146 ILogger]: Start difference. First operand 94 states and 96 transitions. Second operand 38 states. [2019-05-23 11:22:25,622 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:22:25,622 INFO L146 ILogger]: Finished difference Result 165 states and 170 transitions. [2019-05-23 11:22:25,623 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2019-05-23 11:22:25,623 INFO L146 ILogger]: Start accepts. Automaton has 38 states. Word has length 93 [2019-05-23 11:22:25,623 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:22:25,624 INFO L146 ILogger]: With dead ends: 165 [2019-05-23 11:22:25,624 INFO L146 ILogger]: Without dead ends: 120 [2019-05-23 11:22:25,626 INFO L146 ILogger]: 0 DeclaredPredicates, 148 GetRequests, 74 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1542 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=788, Invalid=4762, Unknown=0, NotChecked=0, Total=5550 [2019-05-23 11:22:25,627 INFO L146 ILogger]: Start minimizeSevpa. Operand 120 states. [2019-05-23 11:22:25,632 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 120 to 109. [2019-05-23 11:22:25,632 INFO L146 ILogger]: Start removeUnreachable. Operand 109 states. [2019-05-23 11:22:25,633 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 109 states to 109 states and 111 transitions. [2019-05-23 11:22:25,633 INFO L146 ILogger]: Start accepts. Automaton has 109 states and 111 transitions. Word has length 93 [2019-05-23 11:22:25,633 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:22:25,634 INFO L146 ILogger]: Abstraction has 109 states and 111 transitions. [2019-05-23 11:22:25,634 INFO L146 ILogger]: Interpolant automaton has 38 states. [2019-05-23 11:22:25,634 INFO L146 ILogger]: Start isEmpty. Operand 109 states and 111 transitions. [2019-05-23 11:22:25,635 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 109 [2019-05-23 11:22:25,636 INFO L146 ILogger]: Found error trace [2019-05-23 11:22:25,636 INFO L146 ILogger]: trace histogram [9, 9, 9, 9, 9, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:22:25,636 INFO L146 ILogger]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:22:25,636 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:22:25,637 INFO L146 ILogger]: Analyzing trace with hash -1736455031, now seen corresponding path program 5 times [2019-05-23 11:22:25,637 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:22:25,637 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:22:25,638 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:25,638 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:22:25,638 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:25,684 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:22:26,084 INFO L146 ILogger]: Checked inductivity of 251 backedges. 0 proven. 189 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2019-05-23 11:22:26,085 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:22:26,085 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 11:22:26,098 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:22:26,475 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2019-05-23 11:22:26,475 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:22:26,478 INFO L146 ILogger]: Trace formula consists of 212 conjuncts, 10 conjunts are in the unsatisfiable core [2019-05-23 11:22:26,480 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:22:26,556 INFO L146 ILogger]: Checked inductivity of 251 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 211 trivial. 0 not checked. [2019-05-23 11:22:26,576 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:22:26,576 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 11] total 26 [2019-05-23 11:22:26,576 INFO L146 ILogger]: Interpolant automaton has 26 states [2019-05-23 11:22:26,577 INFO L146 ILogger]: Constructing interpolant automaton starting with 26 interpolants. [2019-05-23 11:22:26,577 INFO L146 ILogger]: CoverageRelationStatistics Valid=146, Invalid=504, Unknown=0, NotChecked=0, Total=650 [2019-05-23 11:22:26,577 INFO L146 ILogger]: Start difference. First operand 109 states and 111 transitions. Second operand 26 states. [2019-05-23 11:22:27,344 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:22:27,345 INFO L146 ILogger]: Finished difference Result 182 states and 187 transitions. [2019-05-23 11:22:27,345 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2019-05-23 11:22:27,346 INFO L146 ILogger]: Start accepts. Automaton has 26 states. Word has length 108 [2019-05-23 11:22:27,346 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:22:27,347 INFO L146 ILogger]: With dead ends: 182 [2019-05-23 11:22:27,347 INFO L146 ILogger]: Without dead ends: 127 [2019-05-23 11:22:27,348 INFO L146 ILogger]: 0 DeclaredPredicates, 154 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 517 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=654, Invalid=1998, Unknown=0, NotChecked=0, Total=2652 [2019-05-23 11:22:27,349 INFO L146 ILogger]: Start minimizeSevpa. Operand 127 states. [2019-05-23 11:22:27,355 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 127 to 120. [2019-05-23 11:22:27,355 INFO L146 ILogger]: Start removeUnreachable. Operand 120 states. [2019-05-23 11:22:27,356 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 120 states to 120 states and 122 transitions. [2019-05-23 11:22:27,356 INFO L146 ILogger]: Start accepts. Automaton has 120 states and 122 transitions. Word has length 108 [2019-05-23 11:22:27,356 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:22:27,356 INFO L146 ILogger]: Abstraction has 120 states and 122 transitions. [2019-05-23 11:22:27,357 INFO L146 ILogger]: Interpolant automaton has 26 states. [2019-05-23 11:22:27,357 INFO L146 ILogger]: Start isEmpty. Operand 120 states and 122 transitions. [2019-05-23 11:22:27,358 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 120 [2019-05-23 11:22:27,358 INFO L146 ILogger]: Found error trace [2019-05-23 11:22:27,359 INFO L146 ILogger]: trace histogram [10, 10, 10, 10, 10, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:22:27,359 INFO L146 ILogger]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:22:27,359 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:22:27,359 INFO L146 ILogger]: Analyzing trace with hash 1066142252, now seen corresponding path program 6 times [2019-05-23 11:22:27,360 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:22:27,360 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:22:27,360 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:27,361 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:22:27,361 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:27,381 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:22:27,626 INFO L146 ILogger]: Checked inductivity of 322 backedges. 0 proven. 235 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2019-05-23 11:22:27,626 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:22:27,626 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 11:22:27,636 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:22:27,994 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2019-05-23 11:22:27,994 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:22:27,996 INFO L146 ILogger]: Trace formula consists of 236 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:22:27,998 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:22:28,097 INFO L146 ILogger]: Checked inductivity of 322 backedges. 0 proven. 65 refuted. 0 times theorem prover too weak. 257 trivial. 0 not checked. [2019-05-23 11:22:28,117 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:22:28,118 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 13] total 29 [2019-05-23 11:22:28,118 INFO L146 ILogger]: Interpolant automaton has 29 states [2019-05-23 11:22:28,118 INFO L146 ILogger]: Constructing interpolant automaton starting with 29 interpolants. [2019-05-23 11:22:28,119 INFO L146 ILogger]: CoverageRelationStatistics Valid=176, Invalid=636, Unknown=0, NotChecked=0, Total=812 [2019-05-23 11:22:28,119 INFO L146 ILogger]: Start difference. First operand 120 states and 122 transitions. Second operand 29 states. [2019-05-23 11:22:29,501 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:22:29,501 INFO L146 ILogger]: Finished difference Result 199 states and 204 transitions. [2019-05-23 11:22:29,502 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2019-05-23 11:22:29,502 INFO L146 ILogger]: Start accepts. Automaton has 29 states. Word has length 119 [2019-05-23 11:22:29,502 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:22:29,503 INFO L146 ILogger]: With dead ends: 199 [2019-05-23 11:22:29,503 INFO L146 ILogger]: Without dead ends: 138 [2019-05-23 11:22:29,505 INFO L146 ILogger]: 0 DeclaredPredicates, 171 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 681 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=818, Invalid=2604, Unknown=0, NotChecked=0, Total=3422 [2019-05-23 11:22:29,506 INFO L146 ILogger]: Start minimizeSevpa. Operand 138 states. [2019-05-23 11:22:29,510 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 138 to 131. [2019-05-23 11:22:29,510 INFO L146 ILogger]: Start removeUnreachable. Operand 131 states. [2019-05-23 11:22:29,510 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 131 states to 131 states and 133 transitions. [2019-05-23 11:22:29,511 INFO L146 ILogger]: Start accepts. Automaton has 131 states and 133 transitions. Word has length 119 [2019-05-23 11:22:29,511 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:22:29,511 INFO L146 ILogger]: Abstraction has 131 states and 133 transitions. [2019-05-23 11:22:29,511 INFO L146 ILogger]: Interpolant automaton has 29 states. [2019-05-23 11:22:29,511 INFO L146 ILogger]: Start isEmpty. Operand 131 states and 133 transitions. [2019-05-23 11:22:29,513 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 131 [2019-05-23 11:22:29,513 INFO L146 ILogger]: Found error trace [2019-05-23 11:22:29,513 INFO L146 ILogger]: trace histogram [11, 11, 11, 11, 11, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:22:29,513 INFO L146 ILogger]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:22:29,514 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:22:29,514 INFO L146 ILogger]: Analyzing trace with hash -1500786591, now seen corresponding path program 7 times [2019-05-23 11:22:29,514 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:22:29,514 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:22:29,515 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:29,515 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:22:29,515 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:29,539 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:22:29,890 INFO L146 ILogger]: Checked inductivity of 404 backedges. 0 proven. 286 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2019-05-23 11:22:29,890 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:22:29,890 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 11:22:29,900 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:22:29,938 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:22:29,939 INFO L146 ILogger]: Trace formula consists of 260 conjuncts, 24 conjunts are in the unsatisfiable core [2019-05-23 11:22:29,941 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:22:29,995 INFO L146 ILogger]: Checked inductivity of 404 backedges. 0 proven. 286 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2019-05-23 11:22:30,022 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:22:30,022 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 27 [2019-05-23 11:22:30,023 INFO L146 ILogger]: Interpolant automaton has 27 states [2019-05-23 11:22:30,023 INFO L146 ILogger]: Constructing interpolant automaton starting with 27 interpolants. [2019-05-23 11:22:30,024 INFO L146 ILogger]: CoverageRelationStatistics Valid=195, Invalid=507, Unknown=0, NotChecked=0, Total=702 [2019-05-23 11:22:30,024 INFO L146 ILogger]: Start difference. First operand 131 states and 133 transitions. Second operand 27 states. [2019-05-23 11:22:31,262 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:22:31,262 INFO L146 ILogger]: Finished difference Result 206 states and 210 transitions. [2019-05-23 11:22:31,263 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2019-05-23 11:22:31,263 INFO L146 ILogger]: Start accepts. Automaton has 27 states. Word has length 130 [2019-05-23 11:22:31,263 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:22:31,264 INFO L146 ILogger]: With dead ends: 206 [2019-05-23 11:22:31,264 INFO L146 ILogger]: Without dead ends: 139 [2019-05-23 11:22:31,265 INFO L146 ILogger]: 0 DeclaredPredicates, 176 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 439 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=748, Invalid=1604, Unknown=0, NotChecked=0, Total=2352 [2019-05-23 11:22:31,266 INFO L146 ILogger]: Start minimizeSevpa. Operand 139 states. [2019-05-23 11:22:31,269 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 139 to 136. [2019-05-23 11:22:31,270 INFO L146 ILogger]: Start removeUnreachable. Operand 136 states. [2019-05-23 11:22:31,270 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 136 states to 136 states and 138 transitions. [2019-05-23 11:22:31,270 INFO L146 ILogger]: Start accepts. Automaton has 136 states and 138 transitions. Word has length 130 [2019-05-23 11:22:31,271 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:22:31,271 INFO L146 ILogger]: Abstraction has 136 states and 138 transitions. [2019-05-23 11:22:31,271 INFO L146 ILogger]: Interpolant automaton has 27 states. [2019-05-23 11:22:31,271 INFO L146 ILogger]: Start isEmpty. Operand 136 states and 138 transitions. [2019-05-23 11:22:31,272 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 136 [2019-05-23 11:22:31,272 INFO L146 ILogger]: Found error trace [2019-05-23 11:22:31,272 INFO L146 ILogger]: trace histogram [12, 12, 12, 12, 12, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:22:31,273 INFO L146 ILogger]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:22:31,273 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:22:31,273 INFO L146 ILogger]: Analyzing trace with hash 1148522440, now seen corresponding path program 8 times [2019-05-23 11:22:31,273 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:22:31,273 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:22:31,274 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:31,274 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:22:31,274 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:31,296 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:22:31,675 INFO L146 ILogger]: Checked inductivity of 460 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2019-05-23 11:22:31,676 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:22:31,676 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 11:22:31,685 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:22:31,729 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:22:31,729 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:22:31,730 INFO L146 ILogger]: Trace formula consists of 268 conjuncts, 26 conjunts are in the unsatisfiable core [2019-05-23 11:22:31,732 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:22:31,786 INFO L146 ILogger]: Checked inductivity of 460 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2019-05-23 11:22:31,815 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:22:31,815 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 29 [2019-05-23 11:22:31,816 INFO L146 ILogger]: Interpolant automaton has 29 states [2019-05-23 11:22:31,816 INFO L146 ILogger]: Constructing interpolant automaton starting with 29 interpolants. [2019-05-23 11:22:31,817 INFO L146 ILogger]: CoverageRelationStatistics Valid=224, Invalid=588, Unknown=0, NotChecked=0, Total=812 [2019-05-23 11:22:31,817 INFO L146 ILogger]: Start difference. First operand 136 states and 138 transitions. Second operand 29 states. [2019-05-23 11:22:32,465 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:22:32,465 INFO L146 ILogger]: Finished difference Result 211 states and 215 transitions. [2019-05-23 11:22:32,470 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2019-05-23 11:22:32,470 INFO L146 ILogger]: Start accepts. Automaton has 29 states. Word has length 135 [2019-05-23 11:22:32,471 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:22:32,471 INFO L146 ILogger]: With dead ends: 211 [2019-05-23 11:22:32,471 INFO L146 ILogger]: Without dead ends: 144 [2019-05-23 11:22:32,473 INFO L146 ILogger]: 0 DeclaredPredicates, 185 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 516 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=875, Invalid=1881, Unknown=0, NotChecked=0, Total=2756 [2019-05-23 11:22:32,473 INFO L146 ILogger]: Start minimizeSevpa. Operand 144 states. [2019-05-23 11:22:32,475 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 144 to 141. [2019-05-23 11:22:32,475 INFO L146 ILogger]: Start removeUnreachable. Operand 141 states. [2019-05-23 11:22:32,476 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 141 states to 141 states and 143 transitions. [2019-05-23 11:22:32,476 INFO L146 ILogger]: Start accepts. Automaton has 141 states and 143 transitions. Word has length 135 [2019-05-23 11:22:32,476 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:22:32,476 INFO L146 ILogger]: Abstraction has 141 states and 143 transitions. [2019-05-23 11:22:32,476 INFO L146 ILogger]: Interpolant automaton has 29 states. [2019-05-23 11:22:32,476 INFO L146 ILogger]: Start isEmpty. Operand 141 states and 143 transitions. [2019-05-23 11:22:32,477 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 141 [2019-05-23 11:22:32,477 INFO L146 ILogger]: Found error trace [2019-05-23 11:22:32,477 INFO L146 ILogger]: trace histogram [13, 13, 13, 13, 13, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:22:32,478 INFO L146 ILogger]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:22:32,478 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:22:32,478 INFO L146 ILogger]: Analyzing trace with hash 557734081, now seen corresponding path program 9 times [2019-05-23 11:22:32,478 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:22:32,478 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:22:32,479 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:32,479 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:22:32,479 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:32,506 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:22:33,004 INFO L146 ILogger]: Checked inductivity of 521 backedges. 0 proven. 403 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2019-05-23 11:22:33,004 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:22:33,004 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 11:22:33,012 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:22:33,388 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2019-05-23 11:22:33,388 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:22:33,390 INFO L146 ILogger]: Trace formula consists of 220 conjuncts, 14 conjunts are in the unsatisfiable core [2019-05-23 11:22:33,392 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:22:33,611 INFO L146 ILogger]: Checked inductivity of 521 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 425 trivial. 0 not checked. [2019-05-23 11:22:33,631 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:22:33,631 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 15] total 36 [2019-05-23 11:22:33,631 INFO L146 ILogger]: Interpolant automaton has 36 states [2019-05-23 11:22:33,632 INFO L146 ILogger]: Constructing interpolant automaton starting with 36 interpolants. [2019-05-23 11:22:33,632 INFO L146 ILogger]: CoverageRelationStatistics Valid=267, Invalid=993, Unknown=0, NotChecked=0, Total=1260 [2019-05-23 11:22:33,632 INFO L146 ILogger]: Start difference. First operand 141 states and 143 transitions. Second operand 36 states. [2019-05-23 11:22:34,677 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:22:34,678 INFO L146 ILogger]: Finished difference Result 226 states and 231 transitions. [2019-05-23 11:22:34,679 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2019-05-23 11:22:34,679 INFO L146 ILogger]: Start accepts. Automaton has 36 states. Word has length 140 [2019-05-23 11:22:34,680 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:22:34,681 INFO L146 ILogger]: With dead ends: 226 [2019-05-23 11:22:34,681 INFO L146 ILogger]: Without dead ends: 159 [2019-05-23 11:22:34,683 INFO L146 ILogger]: 0 DeclaredPredicates, 206 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1089 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1287, Invalid=4115, Unknown=0, NotChecked=0, Total=5402 [2019-05-23 11:22:34,683 INFO L146 ILogger]: Start minimizeSevpa. Operand 159 states. [2019-05-23 11:22:34,687 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 159 to 152. [2019-05-23 11:22:34,687 INFO L146 ILogger]: Start removeUnreachable. Operand 152 states. [2019-05-23 11:22:34,688 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 152 states to 152 states and 154 transitions. [2019-05-23 11:22:34,688 INFO L146 ILogger]: Start accepts. Automaton has 152 states and 154 transitions. Word has length 140 [2019-05-23 11:22:34,688 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:22:34,688 INFO L146 ILogger]: Abstraction has 152 states and 154 transitions. [2019-05-23 11:22:34,689 INFO L146 ILogger]: Interpolant automaton has 36 states. [2019-05-23 11:22:34,689 INFO L146 ILogger]: Start isEmpty. Operand 152 states and 154 transitions. [2019-05-23 11:22:34,689 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 152 [2019-05-23 11:22:34,689 INFO L146 ILogger]: Found error trace [2019-05-23 11:22:34,690 INFO L146 ILogger]: trace histogram [14, 14, 14, 14, 14, 7, 7, 7, 7, 7, 7, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:22:34,690 INFO L146 ILogger]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:22:34,690 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:22:34,690 INFO L146 ILogger]: Analyzing trace with hash -278450076, now seen corresponding path program 10 times [2019-05-23 11:22:34,690 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:22:34,691 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:22:34,691 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:34,691 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:22:34,692 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:34,723 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:22:35,097 INFO L146 ILogger]: Checked inductivity of 624 backedges. 0 proven. 469 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2019-05-23 11:22:35,098 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:22:35,098 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 11:22:35,107 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:22:35,151 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:22:35,151 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:22:35,153 INFO L146 ILogger]: Trace formula consists of 266 conjuncts, 57 conjunts are in the unsatisfiable core [2019-05-23 11:22:35,155 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:22:35,296 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2019-05-23 11:22:35,296 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:22:35,303 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:22:35,304 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:22:35,304 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:23, output treesize:16 [2019-05-23 11:22:35,394 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:22:35,395 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 55 [2019-05-23 11:22:35,396 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:22:35,411 INFO L146 ILogger]: treesize reduction 30, result has 45.5 percent of original size [2019-05-23 11:22:35,412 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:22:35,412 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:29, output treesize:14 [2019-05-23 11:22:35,481 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:22:35,481 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 55 [2019-05-23 11:22:35,482 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:22:35,499 INFO L146 ILogger]: treesize reduction 30, result has 45.5 percent of original size [2019-05-23 11:22:35,500 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:22:35,500 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:29, output treesize:14 [2019-05-23 11:22:35,572 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:22:35,572 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 55 [2019-05-23 11:22:35,573 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:22:35,590 INFO L146 ILogger]: treesize reduction 30, result has 45.5 percent of original size [2019-05-23 11:22:35,590 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:22:35,590 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:29, output treesize:14 [2019-05-23 11:22:35,666 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:22:35,667 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 55 [2019-05-23 11:22:35,668 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:22:35,685 INFO L146 ILogger]: treesize reduction 30, result has 45.5 percent of original size [2019-05-23 11:22:35,685 INFO L146 ILogger]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:22:35,685 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 3 variables, input treesize:29, output treesize:10 [2019-05-23 11:22:35,902 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 8 [2019-05-23 11:22:35,902 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:22:35,904 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:22:35,904 INFO L146 ILogger]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:22:35,904 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 3 variables, input treesize:20, output treesize:4 [2019-05-23 11:22:36,026 INFO L146 ILogger]: Checked inductivity of 624 backedges. 33 proven. 237 refuted. 0 times theorem prover too weak. 354 trivial. 0 not checked. [2019-05-23 11:22:36,044 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:22:36,045 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 29] total 56 [2019-05-23 11:22:36,045 INFO L146 ILogger]: Interpolant automaton has 56 states [2019-05-23 11:22:36,045 INFO L146 ILogger]: Constructing interpolant automaton starting with 56 interpolants. [2019-05-23 11:22:36,046 INFO L146 ILogger]: CoverageRelationStatistics Valid=462, Invalid=2618, Unknown=0, NotChecked=0, Total=3080 [2019-05-23 11:22:36,046 INFO L146 ILogger]: Start difference. First operand 152 states and 154 transitions. Second operand 56 states. [2019-05-23 11:22:37,994 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:22:37,994 INFO L146 ILogger]: Finished difference Result 251 states and 256 transitions. [2019-05-23 11:22:37,994 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2019-05-23 11:22:37,995 INFO L146 ILogger]: Start accepts. Automaton has 56 states. Word has length 151 [2019-05-23 11:22:37,995 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:22:37,996 INFO L146 ILogger]: With dead ends: 251 [2019-05-23 11:22:37,996 INFO L146 ILogger]: Without dead ends: 178 [2019-05-23 11:22:37,999 INFO L146 ILogger]: 0 DeclaredPredicates, 235 GetRequests, 126 SyntacticMatches, 1 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3425 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1767, Invalid=10223, Unknown=0, NotChecked=0, Total=11990 [2019-05-23 11:22:38,000 INFO L146 ILogger]: Start minimizeSevpa. Operand 178 states. [2019-05-23 11:22:38,004 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 178 to 167. [2019-05-23 11:22:38,004 INFO L146 ILogger]: Start removeUnreachable. Operand 167 states. [2019-05-23 11:22:38,004 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 167 states to 167 states and 169 transitions. [2019-05-23 11:22:38,005 INFO L146 ILogger]: Start accepts. Automaton has 167 states and 169 transitions. Word has length 151 [2019-05-23 11:22:38,005 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:22:38,005 INFO L146 ILogger]: Abstraction has 167 states and 169 transitions. [2019-05-23 11:22:38,005 INFO L146 ILogger]: Interpolant automaton has 56 states. [2019-05-23 11:22:38,005 INFO L146 ILogger]: Start isEmpty. Operand 167 states and 169 transitions. [2019-05-23 11:22:38,006 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 167 [2019-05-23 11:22:38,006 INFO L146 ILogger]: Found error trace [2019-05-23 11:22:38,006 INFO L146 ILogger]: trace histogram [15, 15, 15, 15, 15, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:22:38,007 INFO L146 ILogger]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:22:38,007 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:22:38,007 INFO L146 ILogger]: Analyzing trace with hash -79786768, now seen corresponding path program 11 times [2019-05-23 11:22:38,007 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:22:38,007 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:22:38,008 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:38,008 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:22:38,008 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:38,029 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:22:39,061 INFO L146 ILogger]: Checked inductivity of 721 backedges. 0 proven. 540 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2019-05-23 11:22:39,062 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:22:39,062 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 11:22:39,071 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:22:42,130 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2019-05-23 11:22:42,130 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:22:42,136 INFO L146 ILogger]: Trace formula consists of 325 conjuncts, 32 conjunts are in the unsatisfiable core [2019-05-23 11:22:42,139 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:22:42,210 INFO L146 ILogger]: Checked inductivity of 721 backedges. 0 proven. 540 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2019-05-23 11:22:42,232 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:22:42,232 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 35 [2019-05-23 11:22:42,233 INFO L146 ILogger]: Interpolant automaton has 35 states [2019-05-23 11:22:42,233 INFO L146 ILogger]: Constructing interpolant automaton starting with 35 interpolants. [2019-05-23 11:22:42,234 INFO L146 ILogger]: CoverageRelationStatistics Valid=323, Invalid=867, Unknown=0, NotChecked=0, Total=1190 [2019-05-23 11:22:42,234 INFO L146 ILogger]: Start difference. First operand 167 states and 169 transitions. Second operand 35 states. [2019-05-23 11:22:43,033 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:22:43,036 INFO L146 ILogger]: Finished difference Result 258 states and 262 transitions. [2019-05-23 11:22:43,040 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2019-05-23 11:22:43,040 INFO L146 ILogger]: Start accepts. Automaton has 35 states. Word has length 166 [2019-05-23 11:22:43,040 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:22:43,041 INFO L146 ILogger]: With dead ends: 258 [2019-05-23 11:22:43,041 INFO L146 ILogger]: Without dead ends: 175 [2019-05-23 11:22:43,043 INFO L146 ILogger]: 0 DeclaredPredicates, 228 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 783 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1316, Invalid=2844, Unknown=0, NotChecked=0, Total=4160 [2019-05-23 11:22:43,043 INFO L146 ILogger]: Start minimizeSevpa. Operand 175 states. [2019-05-23 11:22:43,047 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 175 to 172. [2019-05-23 11:22:43,047 INFO L146 ILogger]: Start removeUnreachable. Operand 172 states. [2019-05-23 11:22:43,048 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 172 states to 172 states and 174 transitions. [2019-05-23 11:22:43,048 INFO L146 ILogger]: Start accepts. Automaton has 172 states and 174 transitions. Word has length 166 [2019-05-23 11:22:43,048 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:22:43,048 INFO L146 ILogger]: Abstraction has 172 states and 174 transitions. [2019-05-23 11:22:43,048 INFO L146 ILogger]: Interpolant automaton has 35 states. [2019-05-23 11:22:43,049 INFO L146 ILogger]: Start isEmpty. Operand 172 states and 174 transitions. [2019-05-23 11:22:43,049 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 172 [2019-05-23 11:22:43,049 INFO L146 ILogger]: Found error trace [2019-05-23 11:22:43,050 INFO L146 ILogger]: trace histogram [16, 16, 16, 16, 16, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:22:43,050 INFO L146 ILogger]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:22:43,050 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:22:43,050 INFO L146 ILogger]: Analyzing trace with hash -835033897, now seen corresponding path program 12 times [2019-05-23 11:22:43,050 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:22:43,051 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:22:43,051 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:43,051 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:22:43,052 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:43,072 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:22:44,235 INFO L146 ILogger]: Checked inductivity of 797 backedges. 0 proven. 616 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2019-05-23 11:22:44,235 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:22:44,235 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 11:22:44,244 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:23:18,985 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2019-05-23 11:23:18,985 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:19,004 INFO L146 ILogger]: Trace formula consists of 317 conjuncts, 16 conjunts are in the unsatisfiable core [2019-05-23 11:23:19,006 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:23:19,187 INFO L146 ILogger]: Checked inductivity of 797 backedges. 0 proven. 133 refuted. 0 times theorem prover too weak. 664 trivial. 0 not checked. [2019-05-23 11:23:19,211 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:23:19,211 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 17] total 43 [2019-05-23 11:23:19,212 INFO L146 ILogger]: Interpolant automaton has 43 states [2019-05-23 11:23:19,212 INFO L146 ILogger]: Constructing interpolant automaton starting with 43 interpolants. [2019-05-23 11:23:19,213 INFO L146 ILogger]: CoverageRelationStatistics Valid=377, Invalid=1429, Unknown=0, NotChecked=0, Total=1806 [2019-05-23 11:23:19,213 INFO L146 ILogger]: Start difference. First operand 172 states and 174 transitions. Second operand 43 states. [2019-05-23 11:23:20,660 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:23:20,660 INFO L146 ILogger]: Finished difference Result 273 states and 278 transitions. [2019-05-23 11:23:20,660 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2019-05-23 11:23:20,661 INFO L146 ILogger]: Start accepts. Automaton has 43 states. Word has length 171 [2019-05-23 11:23:20,661 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:23:20,662 INFO L146 ILogger]: With dead ends: 273 [2019-05-23 11:23:20,663 INFO L146 ILogger]: Without dead ends: 190 [2019-05-23 11:23:20,666 INFO L146 ILogger]: 0 DeclaredPredicates, 251 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1591 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1863, Invalid=5969, Unknown=0, NotChecked=0, Total=7832 [2019-05-23 11:23:20,666 INFO L146 ILogger]: Start minimizeSevpa. Operand 190 states. [2019-05-23 11:23:20,670 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 190 to 183. [2019-05-23 11:23:20,671 INFO L146 ILogger]: Start removeUnreachable. Operand 183 states. [2019-05-23 11:23:20,671 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 183 states to 183 states and 185 transitions. [2019-05-23 11:23:20,671 INFO L146 ILogger]: Start accepts. Automaton has 183 states and 185 transitions. Word has length 171 [2019-05-23 11:23:20,672 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:23:20,672 INFO L146 ILogger]: Abstraction has 183 states and 185 transitions. [2019-05-23 11:23:20,672 INFO L146 ILogger]: Interpolant automaton has 43 states. [2019-05-23 11:23:20,672 INFO L146 ILogger]: Start isEmpty. Operand 183 states and 185 transitions. [2019-05-23 11:23:20,673 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 183 [2019-05-23 11:23:20,673 INFO L146 ILogger]: Found error trace [2019-05-23 11:23:20,673 INFO L146 ILogger]: trace histogram [17, 17, 17, 17, 17, 8, 8, 8, 8, 8, 8, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:23:20,673 INFO L146 ILogger]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:23:20,674 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:23:20,674 INFO L146 ILogger]: Analyzing trace with hash -1819008116, now seen corresponding path program 13 times [2019-05-23 11:23:20,674 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:23:20,674 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:23:20,675 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:20,675 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:23:20,675 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:20,695 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:21,194 INFO L146 ILogger]: Checked inductivity of 921 backedges. 0 proven. 697 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2019-05-23 11:23:21,194 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:23:21,195 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 11:23:21,203 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:23:21,256 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:21,257 INFO L146 ILogger]: Trace formula consists of 357 conjuncts, 36 conjunts are in the unsatisfiable core [2019-05-23 11:23:21,260 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:23:21,317 INFO L146 ILogger]: Checked inductivity of 921 backedges. 0 proven. 697 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2019-05-23 11:23:21,336 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:23:21,336 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 39 [2019-05-23 11:23:21,336 INFO L146 ILogger]: Interpolant automaton has 39 states [2019-05-23 11:23:21,337 INFO L146 ILogger]: Constructing interpolant automaton starting with 39 interpolants. [2019-05-23 11:23:21,337 INFO L146 ILogger]: CoverageRelationStatistics Valid=399, Invalid=1083, Unknown=0, NotChecked=0, Total=1482 [2019-05-23 11:23:21,338 INFO L146 ILogger]: Start difference. First operand 183 states and 185 transitions. Second operand 39 states. [2019-05-23 11:23:22,447 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:23:22,447 INFO L146 ILogger]: Finished difference Result 280 states and 284 transitions. [2019-05-23 11:23:22,454 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2019-05-23 11:23:22,454 INFO L146 ILogger]: Start accepts. Automaton has 39 states. Word has length 182 [2019-05-23 11:23:22,454 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:23:22,455 INFO L146 ILogger]: With dead ends: 280 [2019-05-23 11:23:22,455 INFO L146 ILogger]: Without dead ends: 191 [2019-05-23 11:23:22,456 INFO L146 ILogger]: 0 DeclaredPredicates, 252 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 991 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1660, Invalid=3596, Unknown=0, NotChecked=0, Total=5256 [2019-05-23 11:23:22,456 INFO L146 ILogger]: Start minimizeSevpa. Operand 191 states. [2019-05-23 11:23:22,460 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 191 to 188. [2019-05-23 11:23:22,460 INFO L146 ILogger]: Start removeUnreachable. Operand 188 states. [2019-05-23 11:23:22,461 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 188 states to 188 states and 190 transitions. [2019-05-23 11:23:22,461 INFO L146 ILogger]: Start accepts. Automaton has 188 states and 190 transitions. Word has length 182 [2019-05-23 11:23:22,462 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:23:22,462 INFO L146 ILogger]: Abstraction has 188 states and 190 transitions. [2019-05-23 11:23:22,462 INFO L146 ILogger]: Interpolant automaton has 39 states. [2019-05-23 11:23:22,462 INFO L146 ILogger]: Start isEmpty. Operand 188 states and 190 transitions. [2019-05-23 11:23:22,464 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 188 [2019-05-23 11:23:22,464 INFO L146 ILogger]: Found error trace [2019-05-23 11:23:22,464 INFO L146 ILogger]: trace histogram [18, 18, 18, 18, 18, 8, 8, 8, 8, 8, 8, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:23:22,464 INFO L146 ILogger]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:23:22,464 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:23:22,464 INFO L146 ILogger]: Analyzing trace with hash -2092348045, now seen corresponding path program 14 times [2019-05-23 11:23:22,464 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:23:22,465 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:23:22,465 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:22,465 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:23:22,465 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:22,485 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:23,026 INFO L146 ILogger]: Checked inductivity of 1007 backedges. 0 proven. 783 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2019-05-23 11:23:23,026 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:23:23,026 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:23:23,035 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:23:23,108 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:23:23,108 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:23,110 INFO L146 ILogger]: Trace formula consists of 365 conjuncts, 38 conjunts are in the unsatisfiable core [2019-05-23 11:23:23,113 INFO L146 ILogger]: Computing forward predicates...