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_single_elem_init_false-unreach-call_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-7aa59a0 [2019-05-23 11:21:26,515 INFO L146 ILogger]: Resetting all preferences to default values... [2019-05-23 11:21:26,517 INFO L146 ILogger]: Resetting UltimateCore preferences to default values [2019-05-23 11:21:26,535 INFO L146 ILogger]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-05-23 11:21:26,535 INFO L146 ILogger]: Resetting Boogie Preprocessor preferences to default values [2019-05-23 11:21:26,536 INFO L146 ILogger]: Resetting Boogie Procedure Inliner preferences to default values [2019-05-23 11:21:26,538 INFO L146 ILogger]: Resetting Abstract Interpretation preferences to default values [2019-05-23 11:21:26,540 INFO L146 ILogger]: Resetting LassoRanker preferences to default values [2019-05-23 11:21:26,542 INFO L146 ILogger]: Resetting Reaching Definitions preferences to default values [2019-05-23 11:21:26,543 INFO L146 ILogger]: Resetting SyntaxChecker preferences to default values [2019-05-23 11:21:26,545 INFO L146 ILogger]: Büchi Program Product provides no preferences, ignoring... [2019-05-23 11:21:26,545 INFO L146 ILogger]: Resetting LTL2Aut preferences to default values [2019-05-23 11:21:26,546 INFO L146 ILogger]: Resetting PEA to Boogie preferences to default values [2019-05-23 11:21:26,549 INFO L146 ILogger]: Resetting BlockEncodingV2 preferences to default values [2019-05-23 11:21:26,555 INFO L146 ILogger]: Resetting ChcToBoogie preferences to default values [2019-05-23 11:21:26,560 INFO L146 ILogger]: Resetting AutomataScriptInterpreter preferences to default values [2019-05-23 11:21:26,561 INFO L146 ILogger]: Resetting BuchiAutomizer preferences to default values [2019-05-23 11:21:26,563 INFO L146 ILogger]: Resetting CACSL2BoogieTranslator preferences to default values [2019-05-23 11:21:26,565 INFO L146 ILogger]: Resetting CodeCheck preferences to default values [2019-05-23 11:21:26,567 INFO L146 ILogger]: Resetting InvariantSynthesis preferences to default values [2019-05-23 11:21:26,568 INFO L146 ILogger]: Resetting RCFGBuilder preferences to default values [2019-05-23 11:21:26,569 INFO L146 ILogger]: Resetting TraceAbstraction preferences to default values [2019-05-23 11:21:26,571 INFO L146 ILogger]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-05-23 11:21:26,571 INFO L146 ILogger]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-05-23 11:21:26,571 INFO L146 ILogger]: Resetting TreeAutomizer preferences to default values [2019-05-23 11:21:26,572 INFO L146 ILogger]: Resetting IcfgToChc preferences to default values [2019-05-23 11:21:26,573 INFO L146 ILogger]: Resetting IcfgTransformer preferences to default values [2019-05-23 11:21:26,574 INFO L146 ILogger]: ReqToTest provides no preferences, ignoring... [2019-05-23 11:21:26,574 INFO L146 ILogger]: Resetting Boogie Printer preferences to default values [2019-05-23 11:21:26,574 INFO L146 ILogger]: Resetting ChcSmtPrinter preferences to default values [2019-05-23 11:21:26,575 INFO L146 ILogger]: Resetting ReqPrinter preferences to default values [2019-05-23 11:21:26,576 INFO L146 ILogger]: Resetting Witness Printer preferences to default values [2019-05-23 11:21:26,577 INFO L146 ILogger]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-05-23 11:21:26,577 INFO L146 ILogger]: Resetting CDTParser preferences to default values [2019-05-23 11:21:26,578 INFO L146 ILogger]: AutomataScriptParser provides no preferences, ignoring... [2019-05-23 11:21:26,578 INFO L146 ILogger]: ReqParser provides no preferences, ignoring... [2019-05-23 11:21:26,578 INFO L146 ILogger]: Resetting SmtParser preferences to default values [2019-05-23 11:21:26,579 INFO L146 ILogger]: Resetting Witness Parser preferences to default values [2019-05-23 11:21:26,580 INFO L146 ILogger]: Finished resetting all preferences to default values... [2019-05-23 11:21:26,580 INFO L146 ILogger]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-05-23 11:21:26,594 INFO L146 ILogger]: Loading preferences was successful [2019-05-23 11:21:26,595 INFO L146 ILogger]: Preferences different from defaults after loading the file: [2019-05-23 11:21:26,596 INFO L146 ILogger]: Preferences of BlockEncodingV2 differ from their defaults: [2019-05-23 11:21:26,596 INFO L146 ILogger]: * Create parallel compositions if possible=false [2019-05-23 11:21:26,596 INFO L146 ILogger]: * Use SBE=true [2019-05-23 11:21:26,597 INFO L146 ILogger]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-05-23 11:21:26,597 INFO L146 ILogger]: * sizeof long=4 [2019-05-23 11:21:26,597 INFO L146 ILogger]: * Overapproximate operations on floating types=true [2019-05-23 11:21:26,597 INFO L146 ILogger]: * sizeof POINTER=4 [2019-05-23 11:21:26,597 INFO L146 ILogger]: * Check division by zero=IGNORE [2019-05-23 11:21:26,598 INFO L146 ILogger]: * Pointer to allocated memory at dereference=IGNORE [2019-05-23 11:21:26,598 INFO L146 ILogger]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-05-23 11:21:26,598 INFO L146 ILogger]: * Check array bounds for arrays that are off heap=IGNORE [2019-05-23 11:21:26,598 INFO L146 ILogger]: * sizeof long double=12 [2019-05-23 11:21:26,598 INFO L146 ILogger]: * Check if freed pointer was valid=false [2019-05-23 11:21:26,599 INFO L146 ILogger]: * Use constant arrays=true [2019-05-23 11:21:26,599 INFO L146 ILogger]: * Pointer base address is valid at dereference=IGNORE [2019-05-23 11:21:26,599 INFO L146 ILogger]: Preferences of RCFGBuilder differ from their defaults: [2019-05-23 11:21:26,599 INFO L146 ILogger]: * Size of a code block=SequenceOfStatements [2019-05-23 11:21:26,599 INFO L146 ILogger]: * To the following directory=./dump/ [2019-05-23 11:21:26,600 INFO L146 ILogger]: * SMT solver=External_DefaultMode [2019-05-23 11:21:26,600 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-05-23 11:21:26,600 INFO L146 ILogger]: Preferences of TraceAbstraction differ from their defaults: [2019-05-23 11:21:26,600 INFO L146 ILogger]: * Compute Interpolants along a Counterexample=FPandBP [2019-05-23 11:21:26,600 INFO L146 ILogger]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-05-23 11:21:26,601 INFO L146 ILogger]: * Trace refinement strategy=CAMEL [2019-05-23 11:21:26,601 INFO L146 ILogger]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-05-23 11:21:26,601 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-05-23 11:21:26,601 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 11:21:26,636 INFO L146 ILogger]: Repository-Root is: /tmp [2019-05-23 11:21:26,653 INFO L146 ILogger]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-05-23 11:21:26,657 INFO L146 ILogger]: [Toolchain 1]: Toolchain selected. [2019-05-23 11:21:26,659 INFO L146 ILogger]: Initializing CDTParser... [2019-05-23 11:21:26,660 INFO L146 ILogger]: CDTParser initialized [2019-05-23 11:21:26,660 INFO L146 ILogger]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/array-industry-pattern/array_single_elem_init_false-unreach-call_true-termination.i [2019-05-23 11:21:26,710 INFO L146 ILogger]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/15fe8f86f/94e62dffbb17499fa3c3b9993319a5db/FLAG2d201aec9 [2019-05-23 11:21:27,089 INFO L146 ILogger]: Found 1 translation units. [2019-05-23 11:21:27,090 INFO L146 ILogger]: Scanning /storage/repos/svcomp/c/array-industry-pattern/array_single_elem_init_false-unreach-call_true-termination.i [2019-05-23 11:21:27,095 INFO L146 ILogger]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/15fe8f86f/94e62dffbb17499fa3c3b9993319a5db/FLAG2d201aec9 [2019-05-23 11:21:27,486 INFO L146 ILogger]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/15fe8f86f/94e62dffbb17499fa3c3b9993319a5db [2019-05-23 11:21:27,493 INFO L146 ILogger]: ####################### [Toolchain 1] ####################### [2019-05-23 11:21:27,495 INFO L146 ILogger]: Walking toolchain with 5 elements. [2019-05-23 11:21:27,496 INFO L146 ILogger]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-05-23 11:21:27,496 INFO L146 ILogger]: Initializing CACSL2BoogieTranslator... [2019-05-23 11:21:27,500 INFO L146 ILogger]: CACSL2BoogieTranslator initialized [2019-05-23 11:21:27,501 INFO L146 ILogger]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:21:27" (1/1) ... [2019-05-23 11:21:27,504 INFO L146 ILogger]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d4bf2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:21:27, skipping insertion in model container [2019-05-23 11:21:27,504 INFO L146 ILogger]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:21:27" (1/1) ... [2019-05-23 11:21:27,512 INFO L146 ILogger]: Starting translation in SV-COMP mode [2019-05-23 11:21:27,532 INFO L146 ILogger]: Built tables and reachable declarations [2019-05-23 11:21:27,773 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:21:27,780 INFO L146 ILogger]: Completed pre-run [2019-05-23 11:21:27,814 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:21:27,840 INFO L146 ILogger]: Completed translation [2019-05-23 11:21:27,841 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:21:27 WrapperNode [2019-05-23 11:21:27,841 INFO L146 ILogger]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-05-23 11:21:27,842 INFO L146 ILogger]: ------------------------Boogie Procedure Inliner---------------------------- [2019-05-23 11:21:27,842 INFO L146 ILogger]: Initializing Boogie Procedure Inliner... [2019-05-23 11:21:27,843 INFO L146 ILogger]: Boogie Procedure Inliner initialized [2019-05-23 11:21:27,852 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:21:27" (1/1) ... [2019-05-23 11:21:27,867 INFO L146 ILogger]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:21:27" (1/1) ... [2019-05-23 11:21:27,896 INFO L146 ILogger]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-05-23 11:21:27,897 INFO L146 ILogger]: ------------------------Boogie Preprocessor---------------------------- [2019-05-23 11:21:27,898 INFO L146 ILogger]: Initializing Boogie Preprocessor... [2019-05-23 11:21:27,898 INFO L146 ILogger]: Boogie Preprocessor initialized [2019-05-23 11:21:28,008 INFO L146 ILogger]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:21:27" (1/1) ... [2019-05-23 11:21:28,008 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:21:27" (1/1) ... [2019-05-23 11:21:28,013 INFO L146 ILogger]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:21:27" (1/1) ... [2019-05-23 11:21:28,017 INFO L146 ILogger]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:21:27" (1/1) ... [2019-05-23 11:21:28,025 INFO L146 ILogger]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:21:27" (1/1) ... [2019-05-23 11:21:28,031 INFO L146 ILogger]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:21:27" (1/1) ... [2019-05-23 11:21:28,032 INFO L146 ILogger]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:21:27" (1/1) ... [2019-05-23 11:21:28,034 INFO L146 ILogger]: ------------------------ END Boogie Preprocessor---------------------------- [2019-05-23 11:21:28,035 INFO L146 ILogger]: ------------------------RCFGBuilder---------------------------- [2019-05-23 11:21:28,038 INFO L146 ILogger]: Initializing RCFGBuilder... [2019-05-23 11:21:28,038 INFO L146 ILogger]: RCFGBuilder initialized [2019-05-23 11:21:28,039 INFO L146 ILogger]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:21:27" (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 11:21:28,090 INFO L146 ILogger]: Found specification of procedure write~int [2019-05-23 11:21:28,091 INFO L146 ILogger]: Found specification of procedure ULTIMATE.start [2019-05-23 11:21:28,091 INFO L146 ILogger]: Found implementation of procedure ULTIMATE.start [2019-05-23 11:21:28,091 INFO L146 ILogger]: Found specification of procedure read~int [2019-05-23 11:21:28,091 INFO L146 ILogger]: Found specification of procedure #Ultimate.allocOnStack [2019-05-23 11:21:28,091 INFO L146 ILogger]: Found specification of procedure ULTIMATE.dealloc [2019-05-23 11:21:28,553 INFO L146 ILogger]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-05-23 11:21:28,553 INFO L146 ILogger]: Removed 8 assume(true) statements. [2019-05-23 11:21:28,555 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:21:28 BoogieIcfgContainer [2019-05-23 11:21:28,555 INFO L146 ILogger]: ------------------------ END RCFGBuilder---------------------------- [2019-05-23 11:21:28,556 INFO L146 ILogger]: ------------------------TraceAbstraction---------------------------- [2019-05-23 11:21:28,556 INFO L146 ILogger]: Initializing TraceAbstraction... [2019-05-23 11:21:28,559 INFO L146 ILogger]: TraceAbstraction initialized [2019-05-23 11:21:28,559 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.05 11:21:27" (1/3) ... [2019-05-23 11:21:28,560 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4effe074 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:21:28, skipping insertion in model container [2019-05-23 11:21:28,560 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:21:27" (2/3) ... [2019-05-23 11:21:28,561 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4effe074 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:21:28, skipping insertion in model container [2019-05-23 11:21:28,561 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:21:28" (3/3) ... [2019-05-23 11:21:28,563 INFO L146 ILogger]: Analyzing ICFG array_single_elem_init_false-unreach-call_true-termination.i [2019-05-23 11:21:28,573 INFO L146 ILogger]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-05-23 11:21:28,581 INFO L146 ILogger]: Appying trace abstraction to program that has 1 error locations. [2019-05-23 11:21:28,596 INFO L146 ILogger]: Starting to check reachability of 1 error locations. [2019-05-23 11:21:28,624 INFO L146 ILogger]: Using default assertion order modulation [2019-05-23 11:21:28,625 INFO L146 ILogger]: Interprodecural is true [2019-05-23 11:21:28,625 INFO L146 ILogger]: Hoare is true [2019-05-23 11:21:28,625 INFO L146 ILogger]: Compute interpolants for FPandBP [2019-05-23 11:21:28,625 INFO L146 ILogger]: Backedges is STRAIGHT_LINE [2019-05-23 11:21:28,625 INFO L146 ILogger]: Determinization is PREDICATE_ABSTRACTION [2019-05-23 11:21:28,626 INFO L146 ILogger]: Difference is false [2019-05-23 11:21:28,626 INFO L146 ILogger]: Minimize is MINIMIZE_SEVPA [2019-05-23 11:21:28,626 INFO L146 ILogger]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-05-23 11:21:28,642 INFO L146 ILogger]: Start isEmpty. Operand 55 states. [2019-05-23 11:21:28,649 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 21 [2019-05-23 11:21:28,649 INFO L146 ILogger]: Found error trace [2019-05-23 11:21:28,650 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] [2019-05-23 11:21:28,652 INFO L146 ILogger]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:21:28,656 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:21:28,656 INFO L146 ILogger]: Analyzing trace with hash -1767945478, now seen corresponding path program 1 times [2019-05-23 11:21:28,658 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:21:28,658 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:21:28,697 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:28,697 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:21:28,697 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:28,736 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:28,775 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 11:21:28,778 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:21:28,778 INFO L146 ILogger]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-05-23 11:21:28,782 INFO L146 ILogger]: Interpolant automaton has 2 states [2019-05-23 11:21:28,795 INFO L146 ILogger]: Constructing interpolant automaton starting with 2 interpolants. [2019-05-23 11:21:28,796 INFO L146 ILogger]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-05-23 11:21:28,797 INFO L146 ILogger]: Start difference. First operand 55 states. Second operand 2 states. [2019-05-23 11:21:28,815 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:21:28,815 INFO L146 ILogger]: Finished difference Result 80 states and 91 transitions. [2019-05-23 11:21:28,815 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-05-23 11:21:28,817 INFO L146 ILogger]: Start accepts. Automaton has 2 states. Word has length 20 [2019-05-23 11:21:28,817 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:21:28,825 INFO L146 ILogger]: With dead ends: 80 [2019-05-23 11:21:28,825 INFO L146 ILogger]: Without dead ends: 45 [2019-05-23 11:21:28,829 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 11:21:28,847 INFO L146 ILogger]: Start minimizeSevpa. Operand 45 states. [2019-05-23 11:21:28,862 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 45 to 45. [2019-05-23 11:21:28,863 INFO L146 ILogger]: Start removeUnreachable. Operand 45 states. [2019-05-23 11:21:28,864 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 45 states to 45 states and 50 transitions. [2019-05-23 11:21:28,866 INFO L146 ILogger]: Start accepts. Automaton has 45 states and 50 transitions. Word has length 20 [2019-05-23 11:21:28,866 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:21:28,866 INFO L146 ILogger]: Abstraction has 45 states and 50 transitions. [2019-05-23 11:21:28,866 INFO L146 ILogger]: Interpolant automaton has 2 states. [2019-05-23 11:21:28,866 INFO L146 ILogger]: Start isEmpty. Operand 45 states and 50 transitions. [2019-05-23 11:21:28,868 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 21 [2019-05-23 11:21:28,868 INFO L146 ILogger]: Found error trace [2019-05-23 11:21:28,868 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] [2019-05-23 11:21:28,869 INFO L146 ILogger]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:21:28,869 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:21:28,869 INFO L146 ILogger]: Analyzing trace with hash -406319213, now seen corresponding path program 1 times [2019-05-23 11:21:28,870 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:21:28,870 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:21:28,871 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:28,871 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:21:28,871 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:28,886 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:28,957 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 11:21:28,957 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:21:28,958 INFO L146 ILogger]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-05-23 11:21:28,959 INFO L146 ILogger]: Interpolant automaton has 3 states [2019-05-23 11:21:28,960 INFO L146 ILogger]: Constructing interpolant automaton starting with 3 interpolants. [2019-05-23 11:21:28,960 INFO L146 ILogger]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-05-23 11:21:28,960 INFO L146 ILogger]: Start difference. First operand 45 states and 50 transitions. Second operand 3 states. [2019-05-23 11:21:29,153 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:21:29,153 INFO L146 ILogger]: Finished difference Result 84 states and 95 transitions. [2019-05-23 11:21:29,153 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-05-23 11:21:29,154 INFO L146 ILogger]: Start accepts. Automaton has 3 states. Word has length 20 [2019-05-23 11:21:29,154 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:21:29,155 INFO L146 ILogger]: With dead ends: 84 [2019-05-23 11:21:29,155 INFO L146 ILogger]: Without dead ends: 69 [2019-05-23 11:21:29,157 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 11:21:29,157 INFO L146 ILogger]: Start minimizeSevpa. Operand 69 states. [2019-05-23 11:21:29,163 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 69 to 48. [2019-05-23 11:21:29,163 INFO L146 ILogger]: Start removeUnreachable. Operand 48 states. [2019-05-23 11:21:29,165 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 48 states to 48 states and 53 transitions. [2019-05-23 11:21:29,165 INFO L146 ILogger]: Start accepts. Automaton has 48 states and 53 transitions. Word has length 20 [2019-05-23 11:21:29,165 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:21:29,165 INFO L146 ILogger]: Abstraction has 48 states and 53 transitions. [2019-05-23 11:21:29,166 INFO L146 ILogger]: Interpolant automaton has 3 states. [2019-05-23 11:21:29,166 INFO L146 ILogger]: Start isEmpty. Operand 48 states and 53 transitions. [2019-05-23 11:21:29,167 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 38 [2019-05-23 11:21:29,167 INFO L146 ILogger]: Found error trace [2019-05-23 11:21:29,168 INFO L146 ILogger]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:21:29,168 INFO L146 ILogger]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:21:29,168 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:21:29,168 INFO L146 ILogger]: Analyzing trace with hash 1465509756, now seen corresponding path program 1 times [2019-05-23 11:21:29,169 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:21:29,169 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:21:29,170 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:29,170 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:21:29,170 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:29,195 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:29,372 INFO L146 ILogger]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-05-23 11:21:29,373 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:21:29,373 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 11:21:29,395 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:21:29,449 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:29,451 INFO L146 ILogger]: Trace formula consists of 78 conjuncts, 4 conjunts are in the unsatisfiable core [2019-05-23 11:21:29,457 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:21:29,605 INFO L146 ILogger]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-05-23 11:21:29,628 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:21:29,628 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2019-05-23 11:21:29,629 INFO L146 ILogger]: Interpolant automaton has 7 states [2019-05-23 11:21:29,629 INFO L146 ILogger]: Constructing interpolant automaton starting with 7 interpolants. [2019-05-23 11:21:29,629 INFO L146 ILogger]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-05-23 11:21:29,630 INFO L146 ILogger]: Start difference. First operand 48 states and 53 transitions. Second operand 7 states. [2019-05-23 11:21:29,966 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:21:29,966 INFO L146 ILogger]: Finished difference Result 107 states and 120 transitions. [2019-05-23 11:21:29,969 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-05-23 11:21:29,969 INFO L146 ILogger]: Start accepts. Automaton has 7 states. Word has length 37 [2019-05-23 11:21:29,970 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:21:29,971 INFO L146 ILogger]: With dead ends: 107 [2019-05-23 11:21:29,971 INFO L146 ILogger]: Without dead ends: 90 [2019-05-23 11:21:29,972 INFO L146 ILogger]: 0 DeclaredPredicates, 43 GetRequests, 36 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 11:21:29,973 INFO L146 ILogger]: Start minimizeSevpa. Operand 90 states. [2019-05-23 11:21:29,980 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 90 to 69. [2019-05-23 11:21:29,980 INFO L146 ILogger]: Start removeUnreachable. Operand 69 states. [2019-05-23 11:21:29,981 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 69 states to 69 states and 77 transitions. [2019-05-23 11:21:29,982 INFO L146 ILogger]: Start accepts. Automaton has 69 states and 77 transitions. Word has length 37 [2019-05-23 11:21:29,982 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:21:29,982 INFO L146 ILogger]: Abstraction has 69 states and 77 transitions. [2019-05-23 11:21:29,982 INFO L146 ILogger]: Interpolant automaton has 7 states. [2019-05-23 11:21:29,983 INFO L146 ILogger]: Start isEmpty. Operand 69 states and 77 transitions. [2019-05-23 11:21:29,984 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 50 [2019-05-23 11:21:29,984 INFO L146 ILogger]: Found error trace [2019-05-23 11:21:29,984 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:21:29,985 INFO L146 ILogger]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:21:29,985 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:21:29,985 INFO L146 ILogger]: Analyzing trace with hash 8549081, now seen corresponding path program 2 times [2019-05-23 11:21:29,985 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:21:29,985 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:21:29,986 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:29,987 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:21:29,987 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:30,012 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:30,117 INFO L146 ILogger]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-05-23 11:21:30,118 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:21:30,118 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 11:21:30,132 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:21:30,183 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:21:30,184 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:30,184 INFO L146 ILogger]: Trace formula consists of 96 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 11:21:30,187 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:21:30,266 INFO L146 ILogger]: Checked inductivity of 16 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-05-23 11:21:30,293 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:21:30,294 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7] total 9 [2019-05-23 11:21:30,294 INFO L146 ILogger]: Interpolant automaton has 9 states [2019-05-23 11:21:30,294 INFO L146 ILogger]: Constructing interpolant automaton starting with 9 interpolants. [2019-05-23 11:21:30,295 INFO L146 ILogger]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:21:30,295 INFO L146 ILogger]: Start difference. First operand 69 states and 77 transitions. Second operand 9 states. [2019-05-23 11:21:31,006 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:21:31,006 INFO L146 ILogger]: Finished difference Result 133 states and 150 transitions. [2019-05-23 11:21:31,009 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-05-23 11:21:31,009 INFO L146 ILogger]: Start accepts. Automaton has 9 states. Word has length 49 [2019-05-23 11:21:31,010 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:21:31,011 INFO L146 ILogger]: With dead ends: 133 [2019-05-23 11:21:31,011 INFO L146 ILogger]: Without dead ends: 116 [2019-05-23 11:21:31,012 INFO L146 ILogger]: 0 DeclaredPredicates, 59 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2019-05-23 11:21:31,013 INFO L146 ILogger]: Start minimizeSevpa. Operand 116 states. [2019-05-23 11:21:31,021 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 116 to 95. [2019-05-23 11:21:31,022 INFO L146 ILogger]: Start removeUnreachable. Operand 95 states. [2019-05-23 11:21:31,023 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 95 states to 95 states and 106 transitions. [2019-05-23 11:21:31,023 INFO L146 ILogger]: Start accepts. Automaton has 95 states and 106 transitions. Word has length 49 [2019-05-23 11:21:31,024 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:21:31,024 INFO L146 ILogger]: Abstraction has 95 states and 106 transitions. [2019-05-23 11:21:31,024 INFO L146 ILogger]: Interpolant automaton has 9 states. [2019-05-23 11:21:31,024 INFO L146 ILogger]: Start isEmpty. Operand 95 states and 106 transitions. [2019-05-23 11:21:31,026 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 67 [2019-05-23 11:21:31,026 INFO L146 ILogger]: Found error trace [2019-05-23 11:21:31,026 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:21:31,027 INFO L146 ILogger]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:21:31,027 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:21:31,027 INFO L146 ILogger]: Analyzing trace with hash -2102023332, now seen corresponding path program 3 times [2019-05-23 11:21:31,027 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:21:31,028 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:21:31,029 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:31,029 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:21:31,029 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:31,051 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:31,367 INFO L146 ILogger]: Checked inductivity of 48 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-05-23 11:21:31,367 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:21:31,368 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 11:21:31,380 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:21:31,414 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-05-23 11:21:31,414 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:31,415 INFO L146 ILogger]: Trace formula consists of 103 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 11:21:31,419 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:21:31,468 INFO L146 ILogger]: Checked inductivity of 48 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2019-05-23 11:21:31,487 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:21:31,487 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 12 [2019-05-23 11:21:31,488 INFO L146 ILogger]: Interpolant automaton has 12 states [2019-05-23 11:21:31,488 INFO L146 ILogger]: Constructing interpolant automaton starting with 12 interpolants. [2019-05-23 11:21:31,488 INFO L146 ILogger]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-05-23 11:21:31,488 INFO L146 ILogger]: Start difference. First operand 95 states and 106 transitions. Second operand 12 states. [2019-05-23 11:21:32,062 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:21:32,063 INFO L146 ILogger]: Finished difference Result 164 states and 184 transitions. [2019-05-23 11:21:32,068 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-05-23 11:21:32,068 INFO L146 ILogger]: Start accepts. Automaton has 12 states. Word has length 66 [2019-05-23 11:21:32,068 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:21:32,070 INFO L146 ILogger]: With dead ends: 164 [2019-05-23 11:21:32,070 INFO L146 ILogger]: Without dead ends: 142 [2019-05-23 11:21:32,071 INFO L146 ILogger]: 0 DeclaredPredicates, 84 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=123, Invalid=339, Unknown=0, NotChecked=0, Total=462 [2019-05-23 11:21:32,071 INFO L146 ILogger]: Start minimizeSevpa. Operand 142 states. [2019-05-23 11:21:32,085 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 142 to 121. [2019-05-23 11:21:32,085 INFO L146 ILogger]: Start removeUnreachable. Operand 121 states. [2019-05-23 11:21:32,087 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 121 states to 121 states and 135 transitions. [2019-05-23 11:21:32,087 INFO L146 ILogger]: Start accepts. Automaton has 121 states and 135 transitions. Word has length 66 [2019-05-23 11:21:32,087 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:21:32,087 INFO L146 ILogger]: Abstraction has 121 states and 135 transitions. [2019-05-23 11:21:32,088 INFO L146 ILogger]: Interpolant automaton has 12 states. [2019-05-23 11:21:32,090 INFO L146 ILogger]: Start isEmpty. Operand 121 states and 135 transitions. [2019-05-23 11:21:32,097 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 84 [2019-05-23 11:21:32,097 INFO L146 ILogger]: Found error trace [2019-05-23 11:21:32,098 INFO L146 ILogger]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:21:32,098 INFO L146 ILogger]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:21:32,098 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:21:32,099 INFO L146 ILogger]: Analyzing trace with hash -659175789, now seen corresponding path program 4 times [2019-05-23 11:21:32,099 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:21:32,099 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:21:32,100 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:32,101 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:21:32,101 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:32,127 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:32,348 INFO L146 ILogger]: Checked inductivity of 97 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-05-23 11:21:32,348 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:21:32,348 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 11:21:32,360 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:21:32,402 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:21:32,402 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:32,403 INFO L146 ILogger]: Trace formula consists of 146 conjuncts, 10 conjunts are in the unsatisfiable core [2019-05-23 11:21:32,407 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:21:32,451 INFO L146 ILogger]: Checked inductivity of 97 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-05-23 11:21:32,472 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:21:32,473 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 13 [2019-05-23 11:21:32,473 INFO L146 ILogger]: Interpolant automaton has 13 states [2019-05-23 11:21:32,474 INFO L146 ILogger]: Constructing interpolant automaton starting with 13 interpolants. [2019-05-23 11:21:32,474 INFO L146 ILogger]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2019-05-23 11:21:32,475 INFO L146 ILogger]: Start difference. First operand 121 states and 135 transitions. Second operand 13 states. [2019-05-23 11:21:32,763 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:21:32,763 INFO L146 ILogger]: Finished difference Result 188 states and 210 transitions. [2019-05-23 11:21:32,764 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-05-23 11:21:32,764 INFO L146 ILogger]: Start accepts. Automaton has 13 states. Word has length 83 [2019-05-23 11:21:32,764 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:21:32,765 INFO L146 ILogger]: With dead ends: 188 [2019-05-23 11:21:32,765 INFO L146 ILogger]: Without dead ends: 161 [2019-05-23 11:21:32,766 INFO L146 ILogger]: 0 DeclaredPredicates, 101 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=139, Invalid=281, Unknown=0, NotChecked=0, Total=420 [2019-05-23 11:21:32,767 INFO L146 ILogger]: Start minimizeSevpa. Operand 161 states. [2019-05-23 11:21:32,774 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 161 to 142. [2019-05-23 11:21:32,775 INFO L146 ILogger]: Start removeUnreachable. Operand 142 states. [2019-05-23 11:21:32,777 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 142 states to 142 states and 159 transitions. [2019-05-23 11:21:32,777 INFO L146 ILogger]: Start accepts. Automaton has 142 states and 159 transitions. Word has length 83 [2019-05-23 11:21:32,777 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:21:32,777 INFO L146 ILogger]: Abstraction has 142 states and 159 transitions. [2019-05-23 11:21:32,777 INFO L146 ILogger]: Interpolant automaton has 13 states. [2019-05-23 11:21:32,778 INFO L146 ILogger]: Start isEmpty. Operand 142 states and 159 transitions. [2019-05-23 11:21:32,779 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 96 [2019-05-23 11:21:32,779 INFO L146 ILogger]: Found error trace [2019-05-23 11:21:32,780 INFO L146 ILogger]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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 11:21:32,780 INFO L146 ILogger]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:21:32,780 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:21:32,780 INFO L146 ILogger]: Analyzing trace with hash -1140656336, now seen corresponding path program 5 times [2019-05-23 11:21:32,781 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:21:32,781 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:21:32,782 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:32,782 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:21:32,782 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:32,803 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:33,006 INFO L146 ILogger]: Checked inductivity of 146 backedges. 0 proven. 125 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-05-23 11:21:33,006 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:21:33,006 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 11:21:33,018 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:21:33,133 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2019-05-23 11:21:33,133 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:33,135 INFO L146 ILogger]: Trace formula consists of 164 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:21:33,145 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:21:33,520 INFO L146 ILogger]: Checked inductivity of 146 backedges. 0 proven. 125 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-05-23 11:21:33,549 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:21:33,549 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 15 [2019-05-23 11:21:33,550 INFO L146 ILogger]: Interpolant automaton has 15 states [2019-05-23 11:21:33,550 INFO L146 ILogger]: Constructing interpolant automaton starting with 15 interpolants. [2019-05-23 11:21:33,550 INFO L146 ILogger]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2019-05-23 11:21:33,550 INFO L146 ILogger]: Start difference. First operand 142 states and 159 transitions. Second operand 15 states. [2019-05-23 11:21:33,999 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:21:34,000 INFO L146 ILogger]: Finished difference Result 209 states and 234 transitions. [2019-05-23 11:21:34,000 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-05-23 11:21:34,000 INFO L146 ILogger]: Start accepts. Automaton has 15 states. Word has length 95 [2019-05-23 11:21:34,001 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:21:34,002 INFO L146 ILogger]: With dead ends: 209 [2019-05-23 11:21:34,002 INFO L146 ILogger]: Without dead ends: 182 [2019-05-23 11:21:34,003 INFO L146 ILogger]: 0 DeclaredPredicates, 117 GetRequests, 94 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 11:21:34,003 INFO L146 ILogger]: Start minimizeSevpa. Operand 182 states. [2019-05-23 11:21:34,011 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 182 to 163. [2019-05-23 11:21:34,011 INFO L146 ILogger]: Start removeUnreachable. Operand 163 states. [2019-05-23 11:21:34,013 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 163 states to 163 states and 183 transitions. [2019-05-23 11:21:34,013 INFO L146 ILogger]: Start accepts. Automaton has 163 states and 183 transitions. Word has length 95 [2019-05-23 11:21:34,013 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:21:34,013 INFO L146 ILogger]: Abstraction has 163 states and 183 transitions. [2019-05-23 11:21:34,013 INFO L146 ILogger]: Interpolant automaton has 15 states. [2019-05-23 11:21:34,014 INFO L146 ILogger]: Start isEmpty. Operand 163 states and 183 transitions. [2019-05-23 11:21:34,015 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 108 [2019-05-23 11:21:34,016 INFO L146 ILogger]: Found error trace [2019-05-23 11:21:34,016 INFO L146 ILogger]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 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 11:21:34,016 INFO L146 ILogger]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:21:34,016 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:21:34,017 INFO L146 ILogger]: Analyzing trace with hash -345824179, now seen corresponding path program 6 times [2019-05-23 11:21:34,017 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:21:34,017 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:21:34,018 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:34,018 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:21:34,018 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:34,037 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:34,299 INFO L146 ILogger]: Checked inductivity of 207 backedges. 0 proven. 186 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-05-23 11:21:34,300 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:21:34,300 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 11:21:34,311 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:21:34,374 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2019-05-23 11:21:34,375 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:34,376 INFO L146 ILogger]: Trace formula consists of 182 conjuncts, 14 conjunts are in the unsatisfiable core [2019-05-23 11:21:34,379 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:21:34,432 INFO L146 ILogger]: Checked inductivity of 207 backedges. 0 proven. 186 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-05-23 11:21:34,451 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:21:34,451 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2019-05-23 11:21:34,452 INFO L146 ILogger]: Interpolant automaton has 17 states [2019-05-23 11:21:34,452 INFO L146 ILogger]: Constructing interpolant automaton starting with 17 interpolants. [2019-05-23 11:21:34,452 INFO L146 ILogger]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2019-05-23 11:21:34,452 INFO L146 ILogger]: Start difference. First operand 163 states and 183 transitions. Second operand 17 states. [2019-05-23 11:21:35,013 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:21:35,014 INFO L146 ILogger]: Finished difference Result 230 states and 258 transitions. [2019-05-23 11:21:35,014 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-05-23 11:21:35,014 INFO L146 ILogger]: Start accepts. Automaton has 17 states. Word has length 107 [2019-05-23 11:21:35,015 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:21:35,017 INFO L146 ILogger]: With dead ends: 230 [2019-05-23 11:21:35,017 INFO L146 ILogger]: Without dead ends: 203 [2019-05-23 11:21:35,018 INFO L146 ILogger]: 0 DeclaredPredicates, 133 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=263, Invalid=549, Unknown=0, NotChecked=0, Total=812 [2019-05-23 11:21:35,019 INFO L146 ILogger]: Start minimizeSevpa. Operand 203 states. [2019-05-23 11:21:35,025 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 203 to 184. [2019-05-23 11:21:35,025 INFO L146 ILogger]: Start removeUnreachable. Operand 184 states. [2019-05-23 11:21:35,027 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 184 states to 184 states and 207 transitions. [2019-05-23 11:21:35,027 INFO L146 ILogger]: Start accepts. Automaton has 184 states and 207 transitions. Word has length 107 [2019-05-23 11:21:35,027 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:21:35,027 INFO L146 ILogger]: Abstraction has 184 states and 207 transitions. [2019-05-23 11:21:35,027 INFO L146 ILogger]: Interpolant automaton has 17 states. [2019-05-23 11:21:35,028 INFO L146 ILogger]: Start isEmpty. Operand 184 states and 207 transitions. [2019-05-23 11:21:35,030 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 120 [2019-05-23 11:21:35,030 INFO L146 ILogger]: Found error trace [2019-05-23 11:21:35,030 INFO L146 ILogger]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 4, 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 11:21:35,030 INFO L146 ILogger]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:21:35,031 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:21:35,031 INFO L146 ILogger]: Analyzing trace with hash 398429674, now seen corresponding path program 7 times [2019-05-23 11:21:35,031 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:21:35,031 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:21:35,032 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:35,032 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:21:35,032 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:35,051 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:35,228 INFO L146 ILogger]: Checked inductivity of 280 backedges. 0 proven. 259 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-05-23 11:21:35,228 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:21:35,229 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 11:21:35,239 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:21:35,274 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:35,275 INFO L146 ILogger]: Trace formula consists of 200 conjuncts, 16 conjunts are in the unsatisfiable core [2019-05-23 11:21:35,278 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:21:35,347 INFO L146 ILogger]: Checked inductivity of 280 backedges. 0 proven. 259 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-05-23 11:21:35,366 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:21:35,367 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 19 [2019-05-23 11:21:35,367 INFO L146 ILogger]: Interpolant automaton has 19 states [2019-05-23 11:21:35,367 INFO L146 ILogger]: Constructing interpolant automaton starting with 19 interpolants. [2019-05-23 11:21:35,368 INFO L146 ILogger]: CoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2019-05-23 11:21:35,368 INFO L146 ILogger]: Start difference. First operand 184 states and 207 transitions. Second operand 19 states. [2019-05-23 11:21:35,786 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:21:35,786 INFO L146 ILogger]: Finished difference Result 251 states and 282 transitions. [2019-05-23 11:21:35,786 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-05-23 11:21:35,787 INFO L146 ILogger]: Start accepts. Automaton has 19 states. Word has length 119 [2019-05-23 11:21:35,787 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:21:35,788 INFO L146 ILogger]: With dead ends: 251 [2019-05-23 11:21:35,789 INFO L146 ILogger]: Without dead ends: 224 [2019-05-23 11:21:35,790 INFO L146 ILogger]: 0 DeclaredPredicates, 149 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=340, Invalid=716, Unknown=0, NotChecked=0, Total=1056 [2019-05-23 11:21:35,790 INFO L146 ILogger]: Start minimizeSevpa. Operand 224 states. [2019-05-23 11:21:35,796 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 224 to 205. [2019-05-23 11:21:35,797 INFO L146 ILogger]: Start removeUnreachable. Operand 205 states. [2019-05-23 11:21:35,798 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 205 states to 205 states and 231 transitions. [2019-05-23 11:21:35,799 INFO L146 ILogger]: Start accepts. Automaton has 205 states and 231 transitions. Word has length 119 [2019-05-23 11:21:35,799 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:21:35,799 INFO L146 ILogger]: Abstraction has 205 states and 231 transitions. [2019-05-23 11:21:35,799 INFO L146 ILogger]: Interpolant automaton has 19 states. [2019-05-23 11:21:35,799 INFO L146 ILogger]: Start isEmpty. Operand 205 states and 231 transitions. [2019-05-23 11:21:35,802 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 132 [2019-05-23 11:21:35,802 INFO L146 ILogger]: Found error trace [2019-05-23 11:21:35,802 INFO L146 ILogger]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 4, 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 11:21:35,803 INFO L146 ILogger]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:21:35,803 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:21:35,803 INFO L146 ILogger]: Analyzing trace with hash -1641974777, now seen corresponding path program 8 times [2019-05-23 11:21:35,803 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:21:35,803 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:21:35,804 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:35,804 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:21:35,805 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:35,825 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:36,078 INFO L146 ILogger]: Checked inductivity of 365 backedges. 0 proven. 344 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-05-23 11:21:36,078 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:21:36,078 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 11:21:36,088 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:21:36,120 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:21:36,120 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:36,121 INFO L146 ILogger]: Trace formula consists of 218 conjuncts, 18 conjunts are in the unsatisfiable core [2019-05-23 11:21:36,124 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:21:36,177 INFO L146 ILogger]: Checked inductivity of 365 backedges. 0 proven. 344 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-05-23 11:21:36,204 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:21:36,205 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2019-05-23 11:21:36,205 INFO L146 ILogger]: Interpolant automaton has 21 states [2019-05-23 11:21:36,205 INFO L146 ILogger]: Constructing interpolant automaton starting with 21 interpolants. [2019-05-23 11:21:36,206 INFO L146 ILogger]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2019-05-23 11:21:36,206 INFO L146 ILogger]: Start difference. First operand 205 states and 231 transitions. Second operand 21 states. [2019-05-23 11:21:36,795 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:21:36,795 INFO L146 ILogger]: Finished difference Result 272 states and 306 transitions. [2019-05-23 11:21:36,797 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2019-05-23 11:21:36,797 INFO L146 ILogger]: Start accepts. Automaton has 21 states. Word has length 131 [2019-05-23 11:21:36,798 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:21:36,799 INFO L146 ILogger]: With dead ends: 272 [2019-05-23 11:21:36,799 INFO L146 ILogger]: Without dead ends: 245 [2019-05-23 11:21:36,801 INFO L146 ILogger]: 0 DeclaredPredicates, 165 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=427, Invalid=905, Unknown=0, NotChecked=0, Total=1332 [2019-05-23 11:21:36,801 INFO L146 ILogger]: Start minimizeSevpa. Operand 245 states. [2019-05-23 11:21:36,806 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 245 to 226. [2019-05-23 11:21:36,806 INFO L146 ILogger]: Start removeUnreachable. Operand 226 states. [2019-05-23 11:21:36,807 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 226 states to 226 states and 255 transitions. [2019-05-23 11:21:36,807 INFO L146 ILogger]: Start accepts. Automaton has 226 states and 255 transitions. Word has length 131 [2019-05-23 11:21:36,808 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:21:36,808 INFO L146 ILogger]: Abstraction has 226 states and 255 transitions. [2019-05-23 11:21:36,808 INFO L146 ILogger]: Interpolant automaton has 21 states. [2019-05-23 11:21:36,808 INFO L146 ILogger]: Start isEmpty. Operand 226 states and 255 transitions. [2019-05-23 11:21:36,810 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 144 [2019-05-23 11:21:36,810 INFO L146 ILogger]: Found error trace [2019-05-23 11:21:36,811 INFO L146 ILogger]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 4, 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 11:21:36,811 INFO L146 ILogger]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:21:36,811 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:21:36,811 INFO L146 ILogger]: Analyzing trace with hash 1471288996, now seen corresponding path program 9 times [2019-05-23 11:21:36,812 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:21:36,812 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:21:36,812 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:36,813 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:21:36,813 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:36,830 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:37,108 INFO L146 ILogger]: Checked inductivity of 462 backedges. 0 proven. 441 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-05-23 11:21:37,108 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:21:37,108 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 11:21:37,118 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:21:37,146 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-05-23 11:21:37,146 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:37,147 INFO L146 ILogger]: Trace formula consists of 128 conjuncts, 8 conjunts are in the unsatisfiable core [2019-05-23 11:21:37,148 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:21:37,338 INFO L146 ILogger]: Checked inductivity of 462 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 441 trivial. 0 not checked. [2019-05-23 11:21:37,357 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:21:37,358 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 9] total 25 [2019-05-23 11:21:37,358 INFO L146 ILogger]: Interpolant automaton has 25 states [2019-05-23 11:21:37,358 INFO L146 ILogger]: Constructing interpolant automaton starting with 25 interpolants. [2019-05-23 11:21:37,359 INFO L146 ILogger]: CoverageRelationStatistics Valid=141, Invalid=459, Unknown=0, NotChecked=0, Total=600 [2019-05-23 11:21:37,359 INFO L146 ILogger]: Start difference. First operand 226 states and 255 transitions. Second operand 25 states. [2019-05-23 11:21:38,076 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:21:38,076 INFO L146 ILogger]: Finished difference Result 300 states and 338 transitions. [2019-05-23 11:21:38,076 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2019-05-23 11:21:38,077 INFO L146 ILogger]: Start accepts. Automaton has 25 states. Word has length 143 [2019-05-23 11:21:38,077 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:21:38,079 INFO L146 ILogger]: With dead ends: 300 [2019-05-23 11:21:38,079 INFO L146 ILogger]: Without dead ends: 273 [2019-05-23 11:21:38,081 INFO L146 ILogger]: 0 DeclaredPredicates, 187 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 447 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=611, Invalid=1741, Unknown=0, NotChecked=0, Total=2352 [2019-05-23 11:21:38,082 INFO L146 ILogger]: Start minimizeSevpa. Operand 273 states. [2019-05-23 11:21:38,086 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 273 to 252. [2019-05-23 11:21:38,086 INFO L146 ILogger]: Start removeUnreachable. Operand 252 states. [2019-05-23 11:21:38,087 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 252 states to 252 states and 284 transitions. [2019-05-23 11:21:38,087 INFO L146 ILogger]: Start accepts. Automaton has 252 states and 284 transitions. Word has length 143 [2019-05-23 11:21:38,088 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:21:38,088 INFO L146 ILogger]: Abstraction has 252 states and 284 transitions. [2019-05-23 11:21:38,088 INFO L146 ILogger]: Interpolant automaton has 25 states. [2019-05-23 11:21:38,088 INFO L146 ILogger]: Start isEmpty. Operand 252 states and 284 transitions. [2019-05-23 11:21:38,090 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 161 [2019-05-23 11:21:38,090 INFO L146 ILogger]: Found error trace [2019-05-23 11:21:38,090 INFO L146 ILogger]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:21:38,090 INFO L146 ILogger]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:21:38,091 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:21:38,091 INFO L146 ILogger]: Analyzing trace with hash -576913615, now seen corresponding path program 10 times [2019-05-23 11:21:38,091 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:21:38,091 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:21:38,092 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:38,092 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:21:38,092 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:38,110 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:38,404 INFO L146 ILogger]: Checked inductivity of 588 backedges. 0 proven. 550 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-05-23 11:21:38,405 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:21:38,405 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 11:21:38,414 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:21:38,460 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:21:38,461 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:38,462 INFO L146 ILogger]: Trace formula consists of 261 conjuncts, 22 conjunts are in the unsatisfiable core [2019-05-23 11:21:38,465 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:21:38,527 INFO L146 ILogger]: Checked inductivity of 588 backedges. 0 proven. 550 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-05-23 11:21:38,555 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:21:38,555 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 25 [2019-05-23 11:21:38,556 INFO L146 ILogger]: Interpolant automaton has 25 states [2019-05-23 11:21:38,557 INFO L146 ILogger]: Constructing interpolant automaton starting with 25 interpolants. [2019-05-23 11:21:38,557 INFO L146 ILogger]: CoverageRelationStatistics Valid=168, Invalid=432, Unknown=0, NotChecked=0, Total=600 [2019-05-23 11:21:38,557 INFO L146 ILogger]: Start difference. First operand 252 states and 284 transitions. Second operand 25 states. [2019-05-23 11:21:39,297 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:21:39,298 INFO L146 ILogger]: Finished difference Result 324 states and 364 transitions. [2019-05-23 11:21:39,298 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2019-05-23 11:21:39,298 INFO L146 ILogger]: Start accepts. Automaton has 25 states. Word has length 160 [2019-05-23 11:21:39,299 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:21:39,301 INFO L146 ILogger]: With dead ends: 324 [2019-05-23 11:21:39,301 INFO L146 ILogger]: Without dead ends: 292 [2019-05-23 11:21:39,303 INFO L146 ILogger]: 0 DeclaredPredicates, 202 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 368 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=631, Invalid=1349, Unknown=0, NotChecked=0, Total=1980 [2019-05-23 11:21:39,303 INFO L146 ILogger]: Start minimizeSevpa. Operand 292 states. [2019-05-23 11:21:39,307 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 292 to 273. [2019-05-23 11:21:39,308 INFO L146 ILogger]: Start removeUnreachable. Operand 273 states. [2019-05-23 11:21:39,309 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 273 states to 273 states and 308 transitions. [2019-05-23 11:21:39,309 INFO L146 ILogger]: Start accepts. Automaton has 273 states and 308 transitions. Word has length 160 [2019-05-23 11:21:39,309 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:21:39,309 INFO L146 ILogger]: Abstraction has 273 states and 308 transitions. [2019-05-23 11:21:39,309 INFO L146 ILogger]: Interpolant automaton has 25 states. [2019-05-23 11:21:39,310 INFO L146 ILogger]: Start isEmpty. Operand 273 states and 308 transitions. [2019-05-23 11:21:39,311 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 173 [2019-05-23 11:21:39,311 INFO L146 ILogger]: Found error trace [2019-05-23 11:21:39,312 INFO L146 ILogger]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:21:39,312 INFO L146 ILogger]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:21:39,312 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:21:39,312 INFO L146 ILogger]: Analyzing trace with hash -57877068, now seen corresponding path program 11 times [2019-05-23 11:21:39,312 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:21:39,313 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:21:39,313 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:39,314 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:21:39,314 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:39,349 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:39,787 INFO L146 ILogger]: Checked inductivity of 709 backedges. 0 proven. 671 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-05-23 11:21:39,787 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:21:39,787 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 11:21:39,796 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:21:39,870 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2019-05-23 11:21:39,871 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:39,872 INFO L146 ILogger]: Trace formula consists of 279 conjuncts, 10 conjunts are in the unsatisfiable core [2019-05-23 11:21:39,875 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:21:40,046 INFO L146 ILogger]: Checked inductivity of 709 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 671 trivial. 0 not checked. [2019-05-23 11:21:40,065 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:21:40,066 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 11] total 30 [2019-05-23 11:21:40,066 INFO L146 ILogger]: Interpolant automaton has 30 states [2019-05-23 11:21:40,066 INFO L146 ILogger]: Constructing interpolant automaton starting with 30 interpolants. [2019-05-23 11:21:40,067 INFO L146 ILogger]: CoverageRelationStatistics Valid=196, Invalid=674, Unknown=0, NotChecked=0, Total=870 [2019-05-23 11:21:40,067 INFO L146 ILogger]: Start difference. First operand 273 states and 308 transitions. Second operand 30 states. [2019-05-23 11:21:40,899 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:21:40,899 INFO L146 ILogger]: Finished difference Result 352 states and 396 transitions. [2019-05-23 11:21:40,900 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2019-05-23 11:21:40,900 INFO L146 ILogger]: Start accepts. Automaton has 30 states. Word has length 172 [2019-05-23 11:21:40,900 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:21:40,902 INFO L146 ILogger]: With dead ends: 352 [2019-05-23 11:21:40,902 INFO L146 ILogger]: Without dead ends: 320 [2019-05-23 11:21:40,905 INFO L146 ILogger]: 0 DeclaredPredicates, 226 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 691 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=892, Invalid=2648, Unknown=0, NotChecked=0, Total=3540 [2019-05-23 11:21:40,905 INFO L146 ILogger]: Start minimizeSevpa. Operand 320 states. [2019-05-23 11:21:40,909 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 320 to 299. [2019-05-23 11:21:40,910 INFO L146 ILogger]: Start removeUnreachable. Operand 299 states. [2019-05-23 11:21:40,911 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 299 states to 299 states and 337 transitions. [2019-05-23 11:21:40,911 INFO L146 ILogger]: Start accepts. Automaton has 299 states and 337 transitions. Word has length 172 [2019-05-23 11:21:40,911 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:21:40,911 INFO L146 ILogger]: Abstraction has 299 states and 337 transitions. [2019-05-23 11:21:40,911 INFO L146 ILogger]: Interpolant automaton has 30 states. [2019-05-23 11:21:40,912 INFO L146 ILogger]: Start isEmpty. Operand 299 states and 337 transitions. [2019-05-23 11:21:40,914 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 190 [2019-05-23 11:21:40,914 INFO L146 ILogger]: Found error trace [2019-05-23 11:21:40,914 INFO L146 ILogger]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:21:40,914 INFO L146 ILogger]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:21:40,914 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:21:40,915 INFO L146 ILogger]: Analyzing trace with hash 1063481083, now seen corresponding path program 12 times [2019-05-23 11:21:40,915 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:21:40,915 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:21:40,916 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:40,916 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:21:40,916 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:40,932 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:41,392 INFO L146 ILogger]: Checked inductivity of 864 backedges. 0 proven. 804 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2019-05-23 11:21:41,393 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:21:41,393 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 11:21:41,410 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:21:41,606 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2019-05-23 11:21:41,607 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:41,608 INFO L146 ILogger]: Trace formula consists of 268 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:21:41,611 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:21:41,757 INFO L146 ILogger]: Checked inductivity of 864 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 804 trivial. 0 not checked. [2019-05-23 11:21:41,775 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:21:41,775 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 13] total 33 [2019-05-23 11:21:41,776 INFO L146 ILogger]: Interpolant automaton has 33 states [2019-05-23 11:21:41,776 INFO L146 ILogger]: Constructing interpolant automaton starting with 33 interpolants. [2019-05-23 11:21:41,777 INFO L146 ILogger]: CoverageRelationStatistics Valid=230, Invalid=826, Unknown=0, NotChecked=0, Total=1056 [2019-05-23 11:21:41,777 INFO L146 ILogger]: Start difference. First operand 299 states and 337 transitions. Second operand 33 states. [2019-05-23 11:21:43,513 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:21:43,513 INFO L146 ILogger]: Finished difference Result 383 states and 430 transitions. [2019-05-23 11:21:43,514 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2019-05-23 11:21:43,514 INFO L146 ILogger]: Start accepts. Automaton has 33 states. Word has length 189 [2019-05-23 11:21:43,514 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:21:43,516 INFO L146 ILogger]: With dead ends: 383 [2019-05-23 11:21:43,516 INFO L146 ILogger]: Without dead ends: 346 [2019-05-23 11:21:43,518 INFO L146 ILogger]: 0 DeclaredPredicates, 249 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 879 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1080, Invalid=3342, Unknown=0, NotChecked=0, Total=4422 [2019-05-23 11:21:43,519 INFO L146 ILogger]: Start minimizeSevpa. Operand 346 states. [2019-05-23 11:21:43,524 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 346 to 325. [2019-05-23 11:21:43,524 INFO L146 ILogger]: Start removeUnreachable. Operand 325 states. [2019-05-23 11:21:43,525 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 325 states to 325 states and 366 transitions. [2019-05-23 11:21:43,525 INFO L146 ILogger]: Start accepts. Automaton has 325 states and 366 transitions. Word has length 189 [2019-05-23 11:21:43,526 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:21:43,526 INFO L146 ILogger]: Abstraction has 325 states and 366 transitions. [2019-05-23 11:21:43,526 INFO L146 ILogger]: Interpolant automaton has 33 states. [2019-05-23 11:21:43,526 INFO L146 ILogger]: Start isEmpty. Operand 325 states and 366 transitions. [2019-05-23 11:21:43,527 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 207 [2019-05-23 11:21:43,527 INFO L146 ILogger]: Found error trace [2019-05-23 11:21:43,527 INFO L146 ILogger]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:21:43,528 INFO L146 ILogger]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:21:43,528 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:21:43,528 INFO L146 ILogger]: Analyzing trace with hash -1629784070, now seen corresponding path program 13 times [2019-05-23 11:21:43,528 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:21:43,528 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:21:43,529 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:43,529 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:21:43,529 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:43,547 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:44,513 INFO L146 ILogger]: Checked inductivity of 1036 backedges. 0 proven. 949 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2019-05-23 11:21:44,513 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:21:44,513 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 11:21:44,522 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:21:44,575 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:44,576 INFO L146 ILogger]: Trace formula consists of 329 conjuncts, 28 conjunts are in the unsatisfiable core [2019-05-23 11:21:44,579 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:21:44,650 INFO L146 ILogger]: Checked inductivity of 1036 backedges. 0 proven. 949 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2019-05-23 11:21:44,669 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:21:44,669 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 31 [2019-05-23 11:21:44,670 INFO L146 ILogger]: Interpolant automaton has 31 states [2019-05-23 11:21:44,670 INFO L146 ILogger]: Constructing interpolant automaton starting with 31 interpolants. [2019-05-23 11:21:44,671 INFO L146 ILogger]: CoverageRelationStatistics Valid=255, Invalid=675, Unknown=0, NotChecked=0, Total=930 [2019-05-23 11:21:44,671 INFO L146 ILogger]: Start difference. First operand 325 states and 366 transitions. Second operand 31 states. [2019-05-23 11:21:46,086 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:21:46,087 INFO L146 ILogger]: Finished difference Result 407 states and 456 transitions. [2019-05-23 11:21:46,087 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2019-05-23 11:21:46,087 INFO L146 ILogger]: Start accepts. Automaton has 31 states. Word has length 206 [2019-05-23 11:21:46,088 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:21:46,090 INFO L146 ILogger]: With dead ends: 407 [2019-05-23 11:21:46,091 INFO L146 ILogger]: Without dead ends: 365 [2019-05-23 11:21:46,092 INFO L146 ILogger]: 0 DeclaredPredicates, 260 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 599 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1012, Invalid=2180, Unknown=0, NotChecked=0, Total=3192 [2019-05-23 11:21:46,093 INFO L146 ILogger]: Start minimizeSevpa. Operand 365 states. [2019-05-23 11:21:46,098 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 365 to 346. [2019-05-23 11:21:46,098 INFO L146 ILogger]: Start removeUnreachable. Operand 346 states. [2019-05-23 11:21:46,099 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 346 states to 346 states and 390 transitions. [2019-05-23 11:21:46,099 INFO L146 ILogger]: Start accepts. Automaton has 346 states and 390 transitions. Word has length 206 [2019-05-23 11:21:46,099 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:21:46,100 INFO L146 ILogger]: Abstraction has 346 states and 390 transitions. [2019-05-23 11:21:46,100 INFO L146 ILogger]: Interpolant automaton has 31 states. [2019-05-23 11:21:46,100 INFO L146 ILogger]: Start isEmpty. Operand 346 states and 390 transitions. [2019-05-23 11:21:46,101 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 219 [2019-05-23 11:21:46,101 INFO L146 ILogger]: Found error trace [2019-05-23 11:21:46,101 INFO L146 ILogger]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:21:46,102 INFO L146 ILogger]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:21:46,102 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:21:46,102 INFO L146 ILogger]: Analyzing trace with hash -29857475, now seen corresponding path program 14 times [2019-05-23 11:21:46,102 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:21:46,102 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:21:46,103 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:46,103 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:21:46,103 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:46,119 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:46,644 INFO L146 ILogger]: Checked inductivity of 1193 backedges. 0 proven. 1106 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2019-05-23 11:21:46,644 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:21:46,644 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 11:21:46,653 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:21:46,702 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:21:46,703 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:46,704 INFO L146 ILogger]: Trace formula consists of 347 conjuncts, 30 conjunts are in the unsatisfiable core [2019-05-23 11:21:46,706 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:21:46,788 INFO L146 ILogger]: Checked inductivity of 1193 backedges. 0 proven. 1106 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2019-05-23 11:21:46,807 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:21:46,807 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 33 [2019-05-23 11:21:46,808 INFO L146 ILogger]: Interpolant automaton has 33 states [2019-05-23 11:21:46,808 INFO L146 ILogger]: Constructing interpolant automaton starting with 33 interpolants. [2019-05-23 11:21:46,808 INFO L146 ILogger]: CoverageRelationStatistics Valid=288, Invalid=768, Unknown=0, NotChecked=0, Total=1056 [2019-05-23 11:21:46,808 INFO L146 ILogger]: Start difference. First operand 346 states and 390 transitions. Second operand 33 states. [2019-05-23 11:21:47,935 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:21:47,935 INFO L146 ILogger]: Finished difference Result 428 states and 480 transitions. [2019-05-23 11:21:47,936 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2019-05-23 11:21:47,936 INFO L146 ILogger]: Start accepts. Automaton has 33 states. Word has length 218 [2019-05-23 11:21:47,936 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:21:47,938 INFO L146 ILogger]: With dead ends: 428 [2019-05-23 11:21:47,938 INFO L146 ILogger]: Without dead ends: 386 [2019-05-23 11:21:47,941 INFO L146 ILogger]: 0 DeclaredPredicates, 276 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 688 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1159, Invalid=2501, Unknown=0, NotChecked=0, Total=3660 [2019-05-23 11:21:47,941 INFO L146 ILogger]: Start minimizeSevpa. Operand 386 states. [2019-05-23 11:21:47,946 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 386 to 367. [2019-05-23 11:21:47,946 INFO L146 ILogger]: Start removeUnreachable. Operand 367 states. [2019-05-23 11:21:47,947 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 367 states to 367 states and 414 transitions. [2019-05-23 11:21:47,947 INFO L146 ILogger]: Start accepts. Automaton has 367 states and 414 transitions. Word has length 218 [2019-05-23 11:21:47,948 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:21:47,948 INFO L146 ILogger]: Abstraction has 367 states and 414 transitions. [2019-05-23 11:21:47,948 INFO L146 ILogger]: Interpolant automaton has 33 states. [2019-05-23 11:21:47,948 INFO L146 ILogger]: Start isEmpty. Operand 367 states and 414 transitions. [2019-05-23 11:21:47,949 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 231 [2019-05-23 11:21:47,950 INFO L146 ILogger]: Found error trace [2019-05-23 11:21:47,950 INFO L146 ILogger]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:21:47,950 INFO L146 ILogger]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:21:47,950 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:21:47,951 INFO L146 ILogger]: Analyzing trace with hash -117535232, now seen corresponding path program 15 times [2019-05-23 11:21:47,951 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:21:47,951 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:21:47,951 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:47,952 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:21:47,952 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:47,968 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:48,963 INFO L146 ILogger]: Checked inductivity of 1362 backedges. 0 proven. 1275 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2019-05-23 11:21:48,964 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:21:48,964 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 11:21:48,972 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:21:49,015 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2019-05-23 11:21:49,016 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:49,016 INFO L146 ILogger]: Trace formula consists of 203 conjuncts, 14 conjunts are in the unsatisfiable core [2019-05-23 11:21:49,019 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:21:49,176 INFO L146 ILogger]: Checked inductivity of 1362 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 1275 trivial. 0 not checked. [2019-05-23 11:21:49,195 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:21:49,195 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 15] total 40 [2019-05-23 11:21:49,196 INFO L146 ILogger]: Interpolant automaton has 40 states [2019-05-23 11:21:49,196 INFO L146 ILogger]: Constructing interpolant automaton starting with 40 interpolants. [2019-05-23 11:21:49,196 INFO L146 ILogger]: CoverageRelationStatistics Valid=333, Invalid=1227, Unknown=0, NotChecked=0, Total=1560 [2019-05-23 11:21:49,197 INFO L146 ILogger]: Start difference. First operand 367 states and 414 transitions. Second operand 40 states. [2019-05-23 11:21:50,496 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:21:50,496 INFO L146 ILogger]: Finished difference Result 456 states and 512 transitions. [2019-05-23 11:21:50,496 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2019-05-23 11:21:50,496 INFO L146 ILogger]: Start accepts. Automaton has 40 states. Word has length 230 [2019-05-23 11:21:50,497 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:21:50,500 INFO L146 ILogger]: With dead ends: 456 [2019-05-23 11:21:50,500 INFO L146 ILogger]: Without dead ends: 414 [2019-05-23 11:21:50,502 INFO L146 ILogger]: 0 DeclaredPredicates, 304 GetRequests, 224 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1335 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1613, Invalid=5029, Unknown=0, NotChecked=0, Total=6642 [2019-05-23 11:21:50,503 INFO L146 ILogger]: Start minimizeSevpa. Operand 414 states. [2019-05-23 11:21:50,508 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 414 to 393. [2019-05-23 11:21:50,508 INFO L146 ILogger]: Start removeUnreachable. Operand 393 states. [2019-05-23 11:21:50,509 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 393 states to 393 states and 443 transitions. [2019-05-23 11:21:50,509 INFO L146 ILogger]: Start accepts. Automaton has 393 states and 443 transitions. Word has length 230 [2019-05-23 11:21:50,509 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:21:50,509 INFO L146 ILogger]: Abstraction has 393 states and 443 transitions. [2019-05-23 11:21:50,509 INFO L146 ILogger]: Interpolant automaton has 40 states. [2019-05-23 11:21:50,509 INFO L146 ILogger]: Start isEmpty. Operand 393 states and 443 transitions. [2019-05-23 11:21:50,511 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 248 [2019-05-23 11:21:50,511 INFO L146 ILogger]: Found error trace [2019-05-23 11:21:50,511 INFO L146 ILogger]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:21:50,512 INFO L146 ILogger]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:21:50,512 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:21:50,512 INFO L146 ILogger]: Analyzing trace with hash -882438161, now seen corresponding path program 16 times [2019-05-23 11:21:50,512 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:21:50,512 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:21:50,513 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:50,513 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:21:50,513 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:50,530 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:51,163 INFO L146 ILogger]: Checked inductivity of 1575 backedges. 0 proven. 1456 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2019-05-23 11:21:51,163 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:21:51,163 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 11:21:51,173 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:21:51,255 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:21:51,255 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:51,257 INFO L146 ILogger]: Trace formula consists of 390 conjuncts, 34 conjunts are in the unsatisfiable core [2019-05-23 11:21:51,261 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:21:51,389 INFO L146 ILogger]: Checked inductivity of 1575 backedges. 0 proven. 1456 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2019-05-23 11:21:51,409 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:21:51,409 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 37 [2019-05-23 11:21:51,410 INFO L146 ILogger]: Interpolant automaton has 37 states [2019-05-23 11:21:51,410 INFO L146 ILogger]: Constructing interpolant automaton starting with 37 interpolants. [2019-05-23 11:21:51,410 INFO L146 ILogger]: CoverageRelationStatistics Valid=360, Invalid=972, Unknown=0, NotChecked=0, Total=1332 [2019-05-23 11:21:51,411 INFO L146 ILogger]: Start difference. First operand 393 states and 443 transitions. Second operand 37 states. [2019-05-23 11:21:52,544 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:21:52,545 INFO L146 ILogger]: Finished difference Result 480 states and 538 transitions. [2019-05-23 11:21:52,545 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2019-05-23 11:21:52,545 INFO L146 ILogger]: Start accepts. Automaton has 37 states. Word has length 247 [2019-05-23 11:21:52,545 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:21:52,548 INFO L146 ILogger]: With dead ends: 480 [2019-05-23 11:21:52,548 INFO L146 ILogger]: Without dead ends: 433 [2019-05-23 11:21:52,550 INFO L146 ILogger]: 0 DeclaredPredicates, 313 GetRequests, 246 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 884 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1483, Invalid=3209, Unknown=0, NotChecked=0, Total=4692 [2019-05-23 11:21:52,550 INFO L146 ILogger]: Start minimizeSevpa. Operand 433 states. [2019-05-23 11:21:52,557 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 433 to 414. [2019-05-23 11:21:52,557 INFO L146 ILogger]: Start removeUnreachable. Operand 414 states. [2019-05-23 11:21:52,558 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 414 states to 414 states and 467 transitions. [2019-05-23 11:21:52,558 INFO L146 ILogger]: Start accepts. Automaton has 414 states and 467 transitions. Word has length 247 [2019-05-23 11:21:52,559 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:21:52,559 INFO L146 ILogger]: Abstraction has 414 states and 467 transitions. [2019-05-23 11:21:52,559 INFO L146 ILogger]: Interpolant automaton has 37 states. [2019-05-23 11:21:52,559 INFO L146 ILogger]: Start isEmpty. Operand 414 states and 467 transitions. [2019-05-23 11:21:52,561 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 260 [2019-05-23 11:21:52,561 INFO L146 ILogger]: Found error trace [2019-05-23 11:21:52,561 INFO L146 ILogger]: trace histogram [17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:21:52,561 INFO L146 ILogger]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:21:52,562 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:21:52,562 INFO L146 ILogger]: Analyzing trace with hash -1710610932, now seen corresponding path program 17 times [2019-05-23 11:21:52,562 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:21:52,562 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:21:52,563 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:52,563 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:21:52,563 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:52,583 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:54,287 INFO L146 ILogger]: Checked inductivity of 1768 backedges. 0 proven. 1649 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2019-05-23 11:21:54,287 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:21:54,287 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 11:21:54,299 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:21:54,466 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2019-05-23 11:21:54,466 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:54,468 INFO L146 ILogger]: Trace formula consists of 408 conjuncts, 36 conjunts are in the unsatisfiable core [2019-05-23 11:21:54,471 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:21:54,556 INFO L146 ILogger]: Checked inductivity of 1768 backedges. 0 proven. 1649 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2019-05-23 11:21:54,576 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:21:54,576 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 39 [2019-05-23 11:21:54,577 INFO L146 ILogger]: Interpolant automaton has 39 states [2019-05-23 11:21:54,577 INFO L146 ILogger]: Constructing interpolant automaton starting with 39 interpolants. [2019-05-23 11:21:54,578 INFO L146 ILogger]: CoverageRelationStatistics Valid=399, Invalid=1083, Unknown=0, NotChecked=0, Total=1482 [2019-05-23 11:21:54,578 INFO L146 ILogger]: Start difference. First operand 414 states and 467 transitions. Second operand 39 states. [2019-05-23 11:21:57,234 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:21:57,235 INFO L146 ILogger]: Finished difference Result 501 states and 562 transitions. [2019-05-23 11:21:57,235 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2019-05-23 11:21:57,235 INFO L146 ILogger]: Start accepts. Automaton has 39 states. Word has length 259 [2019-05-23 11:21:57,236 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:21:57,238 INFO L146 ILogger]: With dead ends: 501 [2019-05-23 11:21:57,238 INFO L146 ILogger]: Without dead ends: 454 [2019-05-23 11:21:57,240 INFO L146 ILogger]: 0 DeclaredPredicates, 329 GetRequests, 258 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 991 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=1660, Invalid=3596, Unknown=0, NotChecked=0, Total=5256 [2019-05-23 11:21:57,240 INFO L146 ILogger]: Start minimizeSevpa. Operand 454 states. [2019-05-23 11:21:57,245 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 454 to 435. [2019-05-23 11:21:57,246 INFO L146 ILogger]: Start removeUnreachable. Operand 435 states. [2019-05-23 11:21:57,246 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 435 states to 435 states and 491 transitions. [2019-05-23 11:21:57,247 INFO L146 ILogger]: Start accepts. Automaton has 435 states and 491 transitions. Word has length 259 [2019-05-23 11:21:57,247 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:21:57,247 INFO L146 ILogger]: Abstraction has 435 states and 491 transitions. [2019-05-23 11:21:57,247 INFO L146 ILogger]: Interpolant automaton has 39 states. [2019-05-23 11:21:57,247 INFO L146 ILogger]: Start isEmpty. Operand 435 states and 491 transitions. [2019-05-23 11:21:57,249 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 272 [2019-05-23 11:21:57,249 INFO L146 ILogger]: Found error trace [2019-05-23 11:21:57,249 INFO L146 ILogger]: trace histogram [18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:21:57,250 INFO L146 ILogger]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:21:57,250 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:21:57,250 INFO L146 ILogger]: Analyzing trace with hash -745277271, now seen corresponding path program 18 times [2019-05-23 11:21:57,250 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:21:57,250 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:21:57,251 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:57,251 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:21:57,251 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:21:57,270 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:58,295 INFO L146 ILogger]: Checked inductivity of 1973 backedges. 0 proven. 1854 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2019-05-23 11:21:58,295 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:21:58,295 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 11:21:58,305 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:21:58,703 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2019-05-23 11:21:58,703 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:21:58,705 INFO L146 ILogger]: Trace formula consists of 354 conjuncts, 16 conjunts are in the unsatisfiable core [2019-05-23 11:21:58,707 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:21:58,895 INFO L146 ILogger]: Checked inductivity of 1973 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 1854 trivial. 0 not checked. [2019-05-23 11:21:58,915 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:21:58,915 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 17] total 47 [2019-05-23 11:21:58,915 INFO L146 ILogger]: Interpolant automaton has 47 states [2019-05-23 11:21:58,916 INFO L146 ILogger]: Constructing interpolant automaton starting with 47 interpolants. [2019-05-23 11:21:58,917 INFO L146 ILogger]: CoverageRelationStatistics Valid=455, Invalid=1707, Unknown=0, NotChecked=0, Total=2162 [2019-05-23 11:21:58,917 INFO L146 ILogger]: Start difference. First operand 435 states and 491 transitions. Second operand 47 states. [2019-05-23 11:22:00,656 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:22:00,656 INFO L146 ILogger]: Finished difference Result 529 states and 594 transitions. [2019-05-23 11:22:00,657 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2019-05-23 11:22:00,657 INFO L146 ILogger]: Start accepts. Automaton has 47 states. Word has length 271 [2019-05-23 11:22:00,657 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:22:00,660 INFO L146 ILogger]: With dead ends: 529 [2019-05-23 11:22:00,660 INFO L146 ILogger]: Without dead ends: 482 [2019-05-23 11:22:00,665 INFO L146 ILogger]: 0 DeclaredPredicates, 359 GetRequests, 264 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1885 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=2253, Invalid=7059, Unknown=0, NotChecked=0, Total=9312 [2019-05-23 11:22:00,667 INFO L146 ILogger]: Start minimizeSevpa. Operand 482 states. [2019-05-23 11:22:00,673 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 482 to 461. [2019-05-23 11:22:00,673 INFO L146 ILogger]: Start removeUnreachable. Operand 461 states. [2019-05-23 11:22:00,674 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 461 states to 461 states and 520 transitions. [2019-05-23 11:22:00,674 INFO L146 ILogger]: Start accepts. Automaton has 461 states and 520 transitions. Word has length 271 [2019-05-23 11:22:00,674 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:22:00,675 INFO L146 ILogger]: Abstraction has 461 states and 520 transitions. [2019-05-23 11:22:00,675 INFO L146 ILogger]: Interpolant automaton has 47 states. [2019-05-23 11:22:00,675 INFO L146 ILogger]: Start isEmpty. Operand 461 states and 520 transitions. [2019-05-23 11:22:00,676 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 289 [2019-05-23 11:22:00,677 INFO L146 ILogger]: Found error trace [2019-05-23 11:22:00,677 INFO L146 ILogger]: trace histogram [19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:22:00,677 INFO L146 ILogger]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:22:00,677 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:22:00,678 INFO L146 ILogger]: Analyzing trace with hash 28141644, now seen corresponding path program 19 times [2019-05-23 11:22:00,678 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:22:00,678 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:22:00,678 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:00,679 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:22:00,679 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:00,699 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:22:01,728 INFO L146 ILogger]: Checked inductivity of 2227 backedges. 0 proven. 2071 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2019-05-23 11:22:01,728 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:22:01,728 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:22:01,738 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:22:01,802 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:22:01,804 INFO L146 ILogger]: Trace formula consists of 451 conjuncts, 40 conjunts are in the unsatisfiable core [2019-05-23 11:22:01,808 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:22:02,012 INFO L146 ILogger]: Checked inductivity of 2227 backedges. 0 proven. 2071 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2019-05-23 11:22:02,030 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:22:02,031 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 43 [2019-05-23 11:22:02,031 INFO L146 ILogger]: Interpolant automaton has 43 states [2019-05-23 11:22:02,031 INFO L146 ILogger]: Constructing interpolant automaton starting with 43 interpolants. [2019-05-23 11:22:02,032 INFO L146 ILogger]: CoverageRelationStatistics Valid=483, Invalid=1323, Unknown=0, NotChecked=0, Total=1806 [2019-05-23 11:22:02,032 INFO L146 ILogger]: Start difference. First operand 461 states and 520 transitions. Second operand 43 states. [2019-05-23 11:22:03,670 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:22:03,671 INFO L146 ILogger]: Finished difference Result 553 states and 620 transitions. [2019-05-23 11:22:03,671 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2019-05-23 11:22:03,671 INFO L146 ILogger]: Start accepts. Automaton has 43 states. Word has length 288 [2019-05-23 11:22:03,672 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:22:03,675 INFO L146 ILogger]: With dead ends: 553 [2019-05-23 11:22:03,675 INFO L146 ILogger]: Without dead ends: 501 [2019-05-23 11:22:03,676 INFO L146 ILogger]: 0 DeclaredPredicates, 366 GetRequests, 287 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1223 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=2044, Invalid=4436, Unknown=0, NotChecked=0, Total=6480 [2019-05-23 11:22:03,676 INFO L146 ILogger]: Start minimizeSevpa. Operand 501 states. [2019-05-23 11:22:03,682 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 501 to 482. [2019-05-23 11:22:03,682 INFO L146 ILogger]: Start removeUnreachable. Operand 482 states. [2019-05-23 11:22:03,683 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 482 states to 482 states and 544 transitions. [2019-05-23 11:22:03,683 INFO L146 ILogger]: Start accepts. Automaton has 482 states and 544 transitions. Word has length 288 [2019-05-23 11:22:03,684 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:22:03,684 INFO L146 ILogger]: Abstraction has 482 states and 544 transitions. [2019-05-23 11:22:03,684 INFO L146 ILogger]: Interpolant automaton has 43 states. [2019-05-23 11:22:03,684 INFO L146 ILogger]: Start isEmpty. Operand 482 states and 544 transitions. [2019-05-23 11:22:03,686 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 301 [2019-05-23 11:22:03,686 INFO L146 ILogger]: Found error trace [2019-05-23 11:22:03,686 INFO L146 ILogger]: trace histogram [20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:22:03,686 INFO L146 ILogger]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:22:03,687 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:22:03,687 INFO L146 ILogger]: Analyzing trace with hash 1332877007, now seen corresponding path program 20 times [2019-05-23 11:22:03,687 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:22:03,687 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:22:03,688 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:03,688 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:22:03,688 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:03,708 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:22:05,195 INFO L146 ILogger]: Checked inductivity of 2456 backedges. 0 proven. 2300 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2019-05-23 11:22:05,195 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:22:05,195 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:22:05,204 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:22:05,275 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:22:05,275 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:22:05,277 INFO L146 ILogger]: Trace formula consists of 469 conjuncts, 42 conjunts are in the unsatisfiable core [2019-05-23 11:22:05,280 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:22:06,092 INFO L146 ILogger]: Checked inductivity of 2456 backedges. 0 proven. 2300 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2019-05-23 11:22:06,132 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:22:06,133 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 45 [2019-05-23 11:22:06,133 INFO L146 ILogger]: Interpolant automaton has 45 states [2019-05-23 11:22:06,134 INFO L146 ILogger]: Constructing interpolant automaton starting with 45 interpolants. [2019-05-23 11:22:06,134 INFO L146 ILogger]: CoverageRelationStatistics Valid=528, Invalid=1452, Unknown=0, NotChecked=0, Total=1980 [2019-05-23 11:22:06,134 INFO L146 ILogger]: Start difference. First operand 482 states and 544 transitions. Second operand 45 states. [2019-05-23 11:22:07,699 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:22:07,699 INFO L146 ILogger]: Finished difference Result 574 states and 644 transitions. [2019-05-23 11:22:07,701 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2019-05-23 11:22:07,702 INFO L146 ILogger]: Start accepts. Automaton has 45 states. Word has length 300 [2019-05-23 11:22:07,703 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:22:07,705 INFO L146 ILogger]: With dead ends: 574 [2019-05-23 11:22:07,705 INFO L146 ILogger]: Without dead ends: 522 [2019-05-23 11:22:07,706 INFO L146 ILogger]: 0 DeclaredPredicates, 382 GetRequests, 299 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1348 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=2251, Invalid=4889, Unknown=0, NotChecked=0, Total=7140 [2019-05-23 11:22:07,707 INFO L146 ILogger]: Start minimizeSevpa. Operand 522 states. [2019-05-23 11:22:07,713 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 522 to 503. [2019-05-23 11:22:07,713 INFO L146 ILogger]: Start removeUnreachable. Operand 503 states. [2019-05-23 11:22:07,714 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 503 states to 503 states and 568 transitions. [2019-05-23 11:22:07,714 INFO L146 ILogger]: Start accepts. Automaton has 503 states and 568 transitions. Word has length 300 [2019-05-23 11:22:07,715 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:22:07,715 INFO L146 ILogger]: Abstraction has 503 states and 568 transitions. [2019-05-23 11:22:07,715 INFO L146 ILogger]: Interpolant automaton has 45 states. [2019-05-23 11:22:07,715 INFO L146 ILogger]: Start isEmpty. Operand 503 states and 568 transitions. [2019-05-23 11:22:07,717 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 313 [2019-05-23 11:22:07,717 INFO L146 ILogger]: Found error trace [2019-05-23 11:22:07,717 INFO L146 ILogger]: trace histogram [21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:22:07,718 INFO L146 ILogger]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:22:07,718 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:22:07,718 INFO L146 ILogger]: Analyzing trace with hash 850270418, now seen corresponding path program 21 times [2019-05-23 11:22:07,718 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:22:07,718 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:22:07,719 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:07,719 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:22:07,719 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:07,739 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:22:09,017 INFO L146 ILogger]: Checked inductivity of 2697 backedges. 0 proven. 2541 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2019-05-23 11:22:09,018 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:22:09,018 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:22:09,026 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:22:09,095 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2019-05-23 11:22:09,095 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:22:09,096 INFO L146 ILogger]: Trace formula consists of 253 conjuncts, 18 conjunts are in the unsatisfiable core [2019-05-23 11:22:09,098 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:22:09,342 INFO L146 ILogger]: Checked inductivity of 2697 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 2541 trivial. 0 not checked. [2019-05-23 11:22:09,361 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:22:09,361 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 19] total 54 [2019-05-23 11:22:09,362 INFO L146 ILogger]: Interpolant automaton has 54 states [2019-05-23 11:22:09,362 INFO L146 ILogger]: Constructing interpolant automaton starting with 54 interpolants. [2019-05-23 11:22:09,362 INFO L146 ILogger]: CoverageRelationStatistics Valid=596, Invalid=2266, Unknown=0, NotChecked=0, Total=2862 [2019-05-23 11:22:09,363 INFO L146 ILogger]: Start difference. First operand 503 states and 568 transitions. Second operand 54 states. [2019-05-23 11:22:11,329 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:22:11,329 INFO L146 ILogger]: Finished difference Result 602 states and 676 transitions. [2019-05-23 11:22:11,330 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2019-05-23 11:22:11,330 INFO L146 ILogger]: Start accepts. Automaton has 54 states. Word has length 312 [2019-05-23 11:22:11,330 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:22:11,333 INFO L146 ILogger]: With dead ends: 602 [2019-05-23 11:22:11,333 INFO L146 ILogger]: Without dead ends: 550 [2019-05-23 11:22:11,335 INFO L146 ILogger]: 0 DeclaredPredicates, 414 GetRequests, 304 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2529 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=3000, Invalid=9432, Unknown=0, NotChecked=0, Total=12432 [2019-05-23 11:22:11,336 INFO L146 ILogger]: Start minimizeSevpa. Operand 550 states. [2019-05-23 11:22:11,341 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 550 to 529. [2019-05-23 11:22:11,341 INFO L146 ILogger]: Start removeUnreachable. Operand 529 states. [2019-05-23 11:22:11,342 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 529 states to 529 states and 597 transitions. [2019-05-23 11:22:11,343 INFO L146 ILogger]: Start accepts. Automaton has 529 states and 597 transitions. Word has length 312 [2019-05-23 11:22:11,343 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:22:11,343 INFO L146 ILogger]: Abstraction has 529 states and 597 transitions. [2019-05-23 11:22:11,343 INFO L146 ILogger]: Interpolant automaton has 54 states. [2019-05-23 11:22:11,343 INFO L146 ILogger]: Start isEmpty. Operand 529 states and 597 transitions. [2019-05-23 11:22:11,345 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 330 [2019-05-23 11:22:11,345 INFO L146 ILogger]: Found error trace [2019-05-23 11:22:11,346 INFO L146 ILogger]: trace histogram [22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:22:11,346 INFO L146 ILogger]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:22:11,346 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:22:11,346 INFO L146 ILogger]: Analyzing trace with hash -1357921507, now seen corresponding path program 22 times [2019-05-23 11:22:11,346 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:22:11,346 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:22:11,347 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:11,347 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:22:11,347 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:11,369 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:22:12,312 INFO L146 ILogger]: Checked inductivity of 2992 backedges. 0 proven. 2794 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2019-05-23 11:22:12,313 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:22:12,313 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:22:12,322 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:22:12,578 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:22:12,579 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:22:12,581 INFO L146 ILogger]: Trace formula consists of 512 conjuncts, 46 conjunts are in the unsatisfiable core [2019-05-23 11:22:12,585 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:22:12,768 INFO L146 ILogger]: Checked inductivity of 2992 backedges. 0 proven. 2794 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2019-05-23 11:22:12,798 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:22:12,799 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 49 [2019-05-23 11:22:12,800 INFO L146 ILogger]: Interpolant automaton has 49 states [2019-05-23 11:22:12,800 INFO L146 ILogger]: Constructing interpolant automaton starting with 49 interpolants. [2019-05-23 11:22:12,800 INFO L146 ILogger]: CoverageRelationStatistics Valid=624, Invalid=1728, Unknown=0, NotChecked=0, Total=2352 [2019-05-23 11:22:12,801 INFO L146 ILogger]: Start difference. First operand 529 states and 597 transitions. Second operand 49 states. [2019-05-23 11:22:14,641 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:22:14,642 INFO L146 ILogger]: Finished difference Result 626 states and 702 transitions. [2019-05-23 11:22:14,642 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2019-05-23 11:22:14,642 INFO L146 ILogger]: Start accepts. Automaton has 49 states. Word has length 329 [2019-05-23 11:22:14,643 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:22:14,646 INFO L146 ILogger]: With dead ends: 626 [2019-05-23 11:22:14,646 INFO L146 ILogger]: Without dead ends: 569 [2019-05-23 11:22:14,647 INFO L146 ILogger]: 0 DeclaredPredicates, 419 GetRequests, 328 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1616 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=2695, Invalid=5861, Unknown=0, NotChecked=0, Total=8556 [2019-05-23 11:22:14,647 INFO L146 ILogger]: Start minimizeSevpa. Operand 569 states. [2019-05-23 11:22:14,653 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 569 to 550. [2019-05-23 11:22:14,653 INFO L146 ILogger]: Start removeUnreachable. Operand 550 states. [2019-05-23 11:22:14,654 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 550 states to 550 states and 621 transitions. [2019-05-23 11:22:14,654 INFO L146 ILogger]: Start accepts. Automaton has 550 states and 621 transitions. Word has length 329 [2019-05-23 11:22:14,655 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:22:14,655 INFO L146 ILogger]: Abstraction has 550 states and 621 transitions. [2019-05-23 11:22:14,655 INFO L146 ILogger]: Interpolant automaton has 49 states. [2019-05-23 11:22:14,655 INFO L146 ILogger]: Start isEmpty. Operand 550 states and 621 transitions. [2019-05-23 11:22:14,658 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 342 [2019-05-23 11:22:14,658 INFO L146 ILogger]: Found error trace [2019-05-23 11:22:14,658 INFO L146 ILogger]: trace histogram [23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:22:14,658 INFO L146 ILogger]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:22:14,658 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:22:14,659 INFO L146 ILogger]: Analyzing trace with hash 1085342714, now seen corresponding path program 23 times [2019-05-23 11:22:14,659 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:22:14,659 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:22:14,660 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:14,660 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:22:14,660 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:14,682 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:22:15,564 INFO L146 ILogger]: Checked inductivity of 3257 backedges. 0 proven. 3059 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2019-05-23 11:22:15,564 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:22:15,564 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:22:15,572 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:22:16,115 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2019-05-23 11:22:16,115 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:22:16,119 INFO L146 ILogger]: Trace formula consists of 530 conjuncts, 20 conjunts are in the unsatisfiable core [2019-05-23 11:22:16,122 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:22:16,392 INFO L146 ILogger]: Checked inductivity of 3257 backedges. 0 proven. 198 refuted. 0 times theorem prover too weak. 3059 trivial. 0 not checked. [2019-05-23 11:22:16,412 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:22:16,412 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 21] total 59 [2019-05-23 11:22:16,413 INFO L146 ILogger]: Interpolant automaton has 59 states [2019-05-23 11:22:16,413 INFO L146 ILogger]: Constructing interpolant automaton starting with 59 interpolants. [2019-05-23 11:22:16,414 INFO L146 ILogger]: CoverageRelationStatistics Valid=704, Invalid=2718, Unknown=0, NotChecked=0, Total=3422 [2019-05-23 11:22:16,414 INFO L146 ILogger]: Start difference. First operand 550 states and 621 transitions. Second operand 59 states. [2019-05-23 11:22:19,106 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:22:19,106 INFO L146 ILogger]: Finished difference Result 654 states and 734 transitions. [2019-05-23 11:22:19,107 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2019-05-23 11:22:19,107 INFO L146 ILogger]: Start accepts. Automaton has 59 states. Word has length 341 [2019-05-23 11:22:19,108 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:22:19,109 INFO L146 ILogger]: With dead ends: 654 [2019-05-23 11:22:19,109 INFO L146 ILogger]: Without dead ends: 597 [2019-05-23 11:22:19,111 INFO L146 ILogger]: 0 DeclaredPredicates, 453 GetRequests, 332 SyntacticMatches, 0 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3069 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=3590, Invalid=11416, Unknown=0, NotChecked=0, Total=15006 [2019-05-23 11:22:19,112 INFO L146 ILogger]: Start minimizeSevpa. Operand 597 states. [2019-05-23 11:22:19,118 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 597 to 576. [2019-05-23 11:22:19,118 INFO L146 ILogger]: Start removeUnreachable. Operand 576 states. [2019-05-23 11:22:19,119 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 576 states to 576 states and 650 transitions. [2019-05-23 11:22:19,119 INFO L146 ILogger]: Start accepts. Automaton has 576 states and 650 transitions. Word has length 341 [2019-05-23 11:22:19,119 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:22:19,119 INFO L146 ILogger]: Abstraction has 576 states and 650 transitions. [2019-05-23 11:22:19,120 INFO L146 ILogger]: Interpolant automaton has 59 states. [2019-05-23 11:22:19,120 INFO L146 ILogger]: Start isEmpty. Operand 576 states and 650 transitions. [2019-05-23 11:22:19,122 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 359 [2019-05-23 11:22:19,122 INFO L146 ILogger]: Found error trace [2019-05-23 11:22:19,122 INFO L146 ILogger]: trace histogram [24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:22:19,123 INFO L146 ILogger]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:22:19,123 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:22:19,123 INFO L146 ILogger]: Analyzing trace with hash 1520607579, now seen corresponding path program 24 times [2019-05-23 11:22:19,123 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:22:19,123 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:22:19,124 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:19,124 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:22:19,124 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:19,146 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:22:20,069 INFO L146 ILogger]: Checked inductivity of 3581 backedges. 0 proven. 3336 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2019-05-23 11:22:20,070 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:22:20,070 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:22:20,079 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:22:20,737 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 21 check-sat command(s) [2019-05-23 11:22:20,738 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:22:20,742 INFO L146 ILogger]: Trace formula consists of 483 conjuncts, 22 conjunts are in the unsatisfiable core [2019-05-23 11:22:20,746 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:22:21,245 INFO L146 ILogger]: Checked inductivity of 3581 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 3336 trivial. 0 not checked. [2019-05-23 11:22:21,265 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:22:21,265 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 23] total 62 [2019-05-23 11:22:21,266 INFO L146 ILogger]: Interpolant automaton has 62 states [2019-05-23 11:22:21,266 INFO L146 ILogger]: Constructing interpolant automaton starting with 62 interpolants. [2019-05-23 11:22:21,267 INFO L146 ILogger]: CoverageRelationStatistics Valid=767, Invalid=3015, Unknown=0, NotChecked=0, Total=3782 [2019-05-23 11:22:21,267 INFO L146 ILogger]: Start difference. First operand 576 states and 650 transitions. Second operand 62 states. [2019-05-23 11:22:24,103 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:22:24,103 INFO L146 ILogger]: Finished difference Result 685 states and 768 transitions. [2019-05-23 11:22:24,104 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2019-05-23 11:22:24,104 INFO L146 ILogger]: Start accepts. Automaton has 62 states. Word has length 358 [2019-05-23 11:22:24,104 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:22:24,106 INFO L146 ILogger]: With dead ends: 685 [2019-05-23 11:22:24,106 INFO L146 ILogger]: Without dead ends: 623 [2019-05-23 11:22:24,108 INFO L146 ILogger]: 0 DeclaredPredicates, 476 GetRequests, 348 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3451 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=3957, Invalid=12813, Unknown=0, NotChecked=0, Total=16770 [2019-05-23 11:22:24,109 INFO L146 ILogger]: Start minimizeSevpa. Operand 623 states. [2019-05-23 11:22:24,114 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 623 to 602. [2019-05-23 11:22:24,115 INFO L146 ILogger]: Start removeUnreachable. Operand 602 states. [2019-05-23 11:22:24,116 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 602 states to 602 states and 679 transitions. [2019-05-23 11:22:24,116 INFO L146 ILogger]: Start accepts. Automaton has 602 states and 679 transitions. Word has length 358 [2019-05-23 11:22:24,116 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:22:24,117 INFO L146 ILogger]: Abstraction has 602 states and 679 transitions. [2019-05-23 11:22:24,117 INFO L146 ILogger]: Interpolant automaton has 62 states. [2019-05-23 11:22:24,117 INFO L146 ILogger]: Start isEmpty. Operand 602 states and 679 transitions. [2019-05-23 11:22:24,119 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 376 [2019-05-23 11:22:24,119 INFO L146 ILogger]: Found error trace [2019-05-23 11:22:24,120 INFO L146 ILogger]: trace histogram [25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 12, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:22:24,120 INFO L146 ILogger]: === Iteration 27 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:22:24,120 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:22:24,120 INFO L146 ILogger]: Analyzing trace with hash 1361644916, now seen corresponding path program 25 times [2019-05-23 11:22:24,120 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:22:24,120 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:22:24,121 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:24,121 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:22:24,121 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:24,145 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:22:25,136 INFO L146 ILogger]: Checked inductivity of 3922 backedges. 0 proven. 3625 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2019-05-23 11:22:25,136 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:22:25,136 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:22:25,144 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:22:25,221 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:22:25,223 INFO L146 ILogger]: Trace formula consists of 580 conjuncts, 52 conjunts are in the unsatisfiable core [2019-05-23 11:22:25,228 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:22:25,467 INFO L146 ILogger]: Checked inductivity of 3922 backedges. 0 proven. 3625 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2019-05-23 11:22:25,498 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:22:25,498 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53] total 55 [2019-05-23 11:22:25,499 INFO L146 ILogger]: Interpolant automaton has 55 states [2019-05-23 11:22:25,500 INFO L146 ILogger]: Constructing interpolant automaton starting with 55 interpolants. [2019-05-23 11:22:25,500 INFO L146 ILogger]: CoverageRelationStatistics Valid=783, Invalid=2187, Unknown=0, NotChecked=0, Total=2970 [2019-05-23 11:22:25,500 INFO L146 ILogger]: Start difference. First operand 602 states and 679 transitions. Second operand 55 states. [2019-05-23 11:22:27,416 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:22:27,416 INFO L146 ILogger]: Finished difference Result 709 states and 794 transitions. [2019-05-23 11:22:27,416 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2019-05-23 11:22:27,417 INFO L146 ILogger]: Start accepts. Automaton has 55 states. Word has length 375 [2019-05-23 11:22:27,417 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:22:27,420 INFO L146 ILogger]: With dead ends: 709 [2019-05-23 11:22:27,420 INFO L146 ILogger]: Without dead ends: 642 [2019-05-23 11:22:27,421 INFO L146 ILogger]: 0 DeclaredPredicates, 477 GetRequests, 374 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2063 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=3436, Invalid=7484, Unknown=0, NotChecked=0, Total=10920 [2019-05-23 11:22:27,422 INFO L146 ILogger]: Start minimizeSevpa. Operand 642 states. [2019-05-23 11:22:27,428 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 642 to 623. [2019-05-23 11:22:27,428 INFO L146 ILogger]: Start removeUnreachable. Operand 623 states. [2019-05-23 11:22:27,429 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 623 states to 623 states and 703 transitions. [2019-05-23 11:22:27,429 INFO L146 ILogger]: Start accepts. Automaton has 623 states and 703 transitions. Word has length 375 [2019-05-23 11:22:27,429 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:22:27,430 INFO L146 ILogger]: Abstraction has 623 states and 703 transitions. [2019-05-23 11:22:27,430 INFO L146 ILogger]: Interpolant automaton has 55 states. [2019-05-23 11:22:27,430 INFO L146 ILogger]: Start isEmpty. Operand 623 states and 703 transitions. [2019-05-23 11:22:27,432 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 388 [2019-05-23 11:22:27,432 INFO L146 ILogger]: Found error trace [2019-05-23 11:22:27,433 INFO L146 ILogger]: trace histogram [26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 12, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:22:27,433 INFO L146 ILogger]: === Iteration 28 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:22:27,433 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:22:27,433 INFO L146 ILogger]: Analyzing trace with hash 621630353, now seen corresponding path program 26 times [2019-05-23 11:22:27,433 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:22:27,434 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:22:27,434 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:27,434 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:22:27,435 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:27,459 INFO L146 ILogger]: Conjunction of SSA is unsat