java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -s config/svcomp-Reach-32bit-Automizer_Default.epf --rcfgbuilder.command.for.external.solver 'z3 SMTLIB2_COMPLIANT=true -memory:4096 -smt2 -in -t:12000' -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --rcfgbuilder.size.of.a.code.block SingleStatement -i /storage/repos/svcomp/c/array-examples/standard_init4_false-unreach-call_ground.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-7aa59a0 [2019-05-23 11:15:27,509 INFO L146 ILogger]: Resetting all preferences to default values... [2019-05-23 11:15:27,513 INFO L146 ILogger]: Resetting UltimateCore preferences to default values [2019-05-23 11:15:27,526 INFO L146 ILogger]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-05-23 11:15:27,527 INFO L146 ILogger]: Resetting Boogie Preprocessor preferences to default values [2019-05-23 11:15:27,528 INFO L146 ILogger]: Resetting Boogie Procedure Inliner preferences to default values [2019-05-23 11:15:27,529 INFO L146 ILogger]: Resetting Abstract Interpretation preferences to default values [2019-05-23 11:15:27,531 INFO L146 ILogger]: Resetting LassoRanker preferences to default values [2019-05-23 11:15:27,533 INFO L146 ILogger]: Resetting Reaching Definitions preferences to default values [2019-05-23 11:15:27,534 INFO L146 ILogger]: Resetting SyntaxChecker preferences to default values [2019-05-23 11:15:27,535 INFO L146 ILogger]: Büchi Program Product provides no preferences, ignoring... [2019-05-23 11:15:27,535 INFO L146 ILogger]: Resetting LTL2Aut preferences to default values [2019-05-23 11:15:27,536 INFO L146 ILogger]: Resetting PEA to Boogie preferences to default values [2019-05-23 11:15:27,537 INFO L146 ILogger]: Resetting BlockEncodingV2 preferences to default values [2019-05-23 11:15:27,538 INFO L146 ILogger]: Resetting ChcToBoogie preferences to default values [2019-05-23 11:15:27,539 INFO L146 ILogger]: Resetting AutomataScriptInterpreter preferences to default values [2019-05-23 11:15:27,540 INFO L146 ILogger]: Resetting BuchiAutomizer preferences to default values [2019-05-23 11:15:27,542 INFO L146 ILogger]: Resetting CACSL2BoogieTranslator preferences to default values [2019-05-23 11:15:27,544 INFO L146 ILogger]: Resetting CodeCheck preferences to default values [2019-05-23 11:15:27,546 INFO L146 ILogger]: Resetting InvariantSynthesis preferences to default values [2019-05-23 11:15:27,547 INFO L146 ILogger]: Resetting RCFGBuilder preferences to default values [2019-05-23 11:15:27,548 INFO L146 ILogger]: Resetting TraceAbstraction preferences to default values [2019-05-23 11:15:27,551 INFO L146 ILogger]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-05-23 11:15:27,551 INFO L146 ILogger]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-05-23 11:15:27,552 INFO L146 ILogger]: Resetting TreeAutomizer preferences to default values [2019-05-23 11:15:27,553 INFO L146 ILogger]: Resetting IcfgToChc preferences to default values [2019-05-23 11:15:27,553 INFO L146 ILogger]: Resetting IcfgTransformer preferences to default values [2019-05-23 11:15:27,554 INFO L146 ILogger]: ReqToTest provides no preferences, ignoring... [2019-05-23 11:15:27,555 INFO L146 ILogger]: Resetting Boogie Printer preferences to default values [2019-05-23 11:15:27,556 INFO L146 ILogger]: Resetting ChcSmtPrinter preferences to default values [2019-05-23 11:15:27,556 INFO L146 ILogger]: Resetting ReqPrinter preferences to default values [2019-05-23 11:15:27,557 INFO L146 ILogger]: Resetting Witness Printer preferences to default values [2019-05-23 11:15:27,558 INFO L146 ILogger]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-05-23 11:15:27,559 INFO L146 ILogger]: Resetting CDTParser preferences to default values [2019-05-23 11:15:27,559 INFO L146 ILogger]: AutomataScriptParser provides no preferences, ignoring... [2019-05-23 11:15:27,560 INFO L146 ILogger]: ReqParser provides no preferences, ignoring... [2019-05-23 11:15:27,560 INFO L146 ILogger]: Resetting SmtParser preferences to default values [2019-05-23 11:15:27,561 INFO L146 ILogger]: Resetting Witness Parser preferences to default values [2019-05-23 11:15:27,562 INFO L146 ILogger]: Finished resetting all preferences to default values... [2019-05-23 11:15:27,562 INFO L146 ILogger]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-05-23 11:15:27,587 INFO L146 ILogger]: Loading preferences was successful [2019-05-23 11:15:27,587 INFO L146 ILogger]: Preferences different from defaults after loading the file: [2019-05-23 11:15:27,590 INFO L146 ILogger]: Preferences of BlockEncodingV2 differ from their defaults: [2019-05-23 11:15:27,591 INFO L146 ILogger]: * Create parallel compositions if possible=false [2019-05-23 11:15:27,591 INFO L146 ILogger]: * Use SBE=true [2019-05-23 11:15:27,592 INFO L146 ILogger]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-05-23 11:15:27,592 INFO L146 ILogger]: * sizeof long=4 [2019-05-23 11:15:27,592 INFO L146 ILogger]: * Overapproximate operations on floating types=true [2019-05-23 11:15:27,592 INFO L146 ILogger]: * sizeof POINTER=4 [2019-05-23 11:15:27,592 INFO L146 ILogger]: * Check division by zero=IGNORE [2019-05-23 11:15:27,593 INFO L146 ILogger]: * Pointer to allocated memory at dereference=IGNORE [2019-05-23 11:15:27,593 INFO L146 ILogger]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-05-23 11:15:27,593 INFO L146 ILogger]: * Check array bounds for arrays that are off heap=IGNORE [2019-05-23 11:15:27,593 INFO L146 ILogger]: * sizeof long double=12 [2019-05-23 11:15:27,593 INFO L146 ILogger]: * Check if freed pointer was valid=false [2019-05-23 11:15:27,594 INFO L146 ILogger]: * Use constant arrays=true [2019-05-23 11:15:27,594 INFO L146 ILogger]: * Pointer base address is valid at dereference=IGNORE [2019-05-23 11:15:27,594 INFO L146 ILogger]: Preferences of RCFGBuilder differ from their defaults: [2019-05-23 11:15:27,594 INFO L146 ILogger]: * Size of a code block=SequenceOfStatements [2019-05-23 11:15:27,594 INFO L146 ILogger]: * To the following directory=./dump/ [2019-05-23 11:15:27,595 INFO L146 ILogger]: * SMT solver=External_DefaultMode [2019-05-23 11:15:27,595 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-05-23 11:15:27,595 INFO L146 ILogger]: Preferences of TraceAbstraction differ from their defaults: [2019-05-23 11:15:27,595 INFO L146 ILogger]: * Compute Interpolants along a Counterexample=FPandBP [2019-05-23 11:15:27,595 INFO L146 ILogger]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-05-23 11:15:27,596 INFO L146 ILogger]: * Trace refinement strategy=CAMEL [2019-05-23 11:15:27,597 INFO L146 ILogger]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-05-23 11:15:27,597 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-05-23 11:15:27,598 INFO L146 ILogger]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Command for external solver -> z3 SMTLIB2_COMPLIANT=true -memory:4096 -smt2 -in -t:12000 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement [2019-05-23 11:15:27,643 INFO L146 ILogger]: Repository-Root is: /tmp [2019-05-23 11:15:27,658 INFO L146 ILogger]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-05-23 11:15:27,665 INFO L146 ILogger]: [Toolchain 1]: Toolchain selected. [2019-05-23 11:15:27,667 INFO L146 ILogger]: Initializing CDTParser... [2019-05-23 11:15:27,667 INFO L146 ILogger]: CDTParser initialized [2019-05-23 11:15:27,668 INFO L146 ILogger]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/array-examples/standard_init4_false-unreach-call_ground.i [2019-05-23 11:15:27,732 INFO L146 ILogger]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/79d0c544a/33220716118f4d0e83b7b6e008e0ce84/FLAG60c69ef59 [2019-05-23 11:15:28,169 INFO L146 ILogger]: Found 1 translation units. [2019-05-23 11:15:28,170 INFO L146 ILogger]: Scanning /storage/repos/svcomp/c/array-examples/standard_init4_false-unreach-call_ground.i [2019-05-23 11:15:28,176 INFO L146 ILogger]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/79d0c544a/33220716118f4d0e83b7b6e008e0ce84/FLAG60c69ef59 [2019-05-23 11:15:28,537 INFO L146 ILogger]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/79d0c544a/33220716118f4d0e83b7b6e008e0ce84 [2019-05-23 11:15:28,546 INFO L146 ILogger]: ####################### [Toolchain 1] ####################### [2019-05-23 11:15:28,548 INFO L146 ILogger]: Walking toolchain with 5 elements. [2019-05-23 11:15:28,549 INFO L146 ILogger]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-05-23 11:15:28,549 INFO L146 ILogger]: Initializing CACSL2BoogieTranslator... [2019-05-23 11:15:28,552 INFO L146 ILogger]: CACSL2BoogieTranslator initialized [2019-05-23 11:15:28,553 INFO L146 ILogger]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:15:28" (1/1) ... [2019-05-23 11:15:28,556 INFO L146 ILogger]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@edbe281 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:15:28, skipping insertion in model container [2019-05-23 11:15:28,556 INFO L146 ILogger]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:15:28" (1/1) ... [2019-05-23 11:15:28,563 INFO L146 ILogger]: Starting translation in SV-COMP mode [2019-05-23 11:15:28,580 INFO L146 ILogger]: Built tables and reachable declarations [2019-05-23 11:15:28,786 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:15:28,792 INFO L146 ILogger]: Completed pre-run [2019-05-23 11:15:28,829 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:15:28,860 INFO L146 ILogger]: Completed translation [2019-05-23 11:15:28,861 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:15:28 WrapperNode [2019-05-23 11:15:28,861 INFO L146 ILogger]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-05-23 11:15:28,863 INFO L146 ILogger]: ------------------------Boogie Procedure Inliner---------------------------- [2019-05-23 11:15:28,863 INFO L146 ILogger]: Initializing Boogie Procedure Inliner... [2019-05-23 11:15:28,863 INFO L146 ILogger]: Boogie Procedure Inliner initialized [2019-05-23 11:15:28,874 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:15:28" (1/1) ... [2019-05-23 11:15:28,887 INFO L146 ILogger]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:15:28" (1/1) ... [2019-05-23 11:15:28,912 INFO L146 ILogger]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-05-23 11:15:28,912 INFO L146 ILogger]: ------------------------Boogie Preprocessor---------------------------- [2019-05-23 11:15:28,913 INFO L146 ILogger]: Initializing Boogie Preprocessor... [2019-05-23 11:15:28,913 INFO L146 ILogger]: Boogie Preprocessor initialized [2019-05-23 11:15:28,923 INFO L146 ILogger]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:15:28" (1/1) ... [2019-05-23 11:15:28,923 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:15:28" (1/1) ... [2019-05-23 11:15:28,925 INFO L146 ILogger]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:15:28" (1/1) ... [2019-05-23 11:15:28,926 INFO L146 ILogger]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:15:28" (1/1) ... [2019-05-23 11:15:28,935 INFO L146 ILogger]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:15:28" (1/1) ... [2019-05-23 11:15:28,951 INFO L146 ILogger]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:15:28" (1/1) ... [2019-05-23 11:15:28,954 INFO L146 ILogger]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:15:28" (1/1) ... [2019-05-23 11:15:28,959 INFO L146 ILogger]: ------------------------ END Boogie Preprocessor---------------------------- [2019-05-23 11:15:28,960 INFO L146 ILogger]: ------------------------RCFGBuilder---------------------------- [2019-05-23 11:15:28,960 INFO L146 ILogger]: Initializing RCFGBuilder... [2019-05-23 11:15:28,960 INFO L146 ILogger]: RCFGBuilder initialized [2019-05-23 11:15:28,966 INFO L146 ILogger]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:15:28" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4096 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4096 -smt2 -in -t:12000 [2019-05-23 11:15:29,129 INFO L146 ILogger]: Found specification of procedure write~int [2019-05-23 11:15:29,129 INFO L146 ILogger]: Found specification of procedure ULTIMATE.start [2019-05-23 11:15:29,129 INFO L146 ILogger]: Found implementation of procedure ULTIMATE.start [2019-05-23 11:15:29,129 INFO L146 ILogger]: Found specification of procedure read~int [2019-05-23 11:15:29,129 INFO L146 ILogger]: Found specification of procedure #Ultimate.allocOnStack [2019-05-23 11:15:29,130 INFO L146 ILogger]: Found specification of procedure ULTIMATE.dealloc [2019-05-23 11:15:29,544 INFO L146 ILogger]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-05-23 11:15:29,545 INFO L146 ILogger]: Removed 11 assume(true) statements. [2019-05-23 11:15:29,546 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:15:29 BoogieIcfgContainer [2019-05-23 11:15:29,547 INFO L146 ILogger]: ------------------------ END RCFGBuilder---------------------------- [2019-05-23 11:15:29,547 INFO L146 ILogger]: ------------------------TraceAbstraction---------------------------- [2019-05-23 11:15:29,548 INFO L146 ILogger]: Initializing TraceAbstraction... [2019-05-23 11:15:29,553 INFO L146 ILogger]: TraceAbstraction initialized [2019-05-23 11:15:29,553 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.05 11:15:28" (1/3) ... [2019-05-23 11:15:29,554 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15810cda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:15:29, skipping insertion in model container [2019-05-23 11:15:29,554 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:15:28" (2/3) ... [2019-05-23 11:15:29,554 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15810cda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:15:29, skipping insertion in model container [2019-05-23 11:15:29,555 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:15:29" (3/3) ... [2019-05-23 11:15:29,556 INFO L146 ILogger]: Analyzing ICFG standard_init4_false-unreach-call_ground.i [2019-05-23 11:15:29,564 INFO L146 ILogger]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-05-23 11:15:29,571 INFO L146 ILogger]: Appying trace abstraction to program that has 1 error locations. [2019-05-23 11:15:29,588 INFO L146 ILogger]: Starting to check reachability of 1 error locations. [2019-05-23 11:15:29,620 INFO L146 ILogger]: Using default assertion order modulation [2019-05-23 11:15:29,621 INFO L146 ILogger]: Interprodecural is true [2019-05-23 11:15:29,621 INFO L146 ILogger]: Hoare is true [2019-05-23 11:15:29,621 INFO L146 ILogger]: Compute interpolants for FPandBP [2019-05-23 11:15:29,621 INFO L146 ILogger]: Backedges is STRAIGHT_LINE [2019-05-23 11:15:29,621 INFO L146 ILogger]: Determinization is PREDICATE_ABSTRACTION [2019-05-23 11:15:29,622 INFO L146 ILogger]: Difference is false [2019-05-23 11:15:29,622 INFO L146 ILogger]: Minimize is MINIMIZE_SEVPA [2019-05-23 11:15:29,622 INFO L146 ILogger]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-05-23 11:15:29,638 INFO L146 ILogger]: Start isEmpty. Operand 41 states. [2019-05-23 11:15:29,645 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 23 [2019-05-23 11:15:29,645 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:29,647 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:15:29,649 INFO L146 ILogger]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:29,654 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:29,655 INFO L146 ILogger]: Analyzing trace with hash 1239966840, now seen corresponding path program 1 times [2019-05-23 11:15:29,656 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:29,657 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:29,699 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:29,699 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:15:29,700 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:29,740 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:29,776 INFO L146 ILogger]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:15:29,779 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:15:29,779 INFO L146 ILogger]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-05-23 11:15:29,783 INFO L146 ILogger]: Interpolant automaton has 2 states [2019-05-23 11:15:29,796 INFO L146 ILogger]: Constructing interpolant automaton starting with 2 interpolants. [2019-05-23 11:15:29,797 INFO L146 ILogger]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-05-23 11:15:29,800 INFO L146 ILogger]: Start difference. First operand 41 states. Second operand 2 states. [2019-05-23 11:15:29,819 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:29,820 INFO L146 ILogger]: Finished difference Result 73 states and 91 transitions. [2019-05-23 11:15:29,820 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-05-23 11:15:29,821 INFO L146 ILogger]: Start accepts. Automaton has 2 states. Word has length 22 [2019-05-23 11:15:29,821 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:29,831 INFO L146 ILogger]: With dead ends: 73 [2019-05-23 11:15:29,831 INFO L146 ILogger]: Without dead ends: 35 [2019-05-23 11:15:29,834 INFO L146 ILogger]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-05-23 11:15:29,852 INFO L146 ILogger]: Start minimizeSevpa. Operand 35 states. [2019-05-23 11:15:29,867 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 35 to 35. [2019-05-23 11:15:29,869 INFO L146 ILogger]: Start removeUnreachable. Operand 35 states. [2019-05-23 11:15:29,870 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2019-05-23 11:15:29,872 INFO L146 ILogger]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 22 [2019-05-23 11:15:29,872 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:29,872 INFO L146 ILogger]: Abstraction has 35 states and 39 transitions. [2019-05-23 11:15:29,872 INFO L146 ILogger]: Interpolant automaton has 2 states. [2019-05-23 11:15:29,873 INFO L146 ILogger]: Start isEmpty. Operand 35 states and 39 transitions. [2019-05-23 11:15:29,873 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 23 [2019-05-23 11:15:29,874 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:29,874 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:15:29,874 INFO L146 ILogger]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:29,875 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:29,875 INFO L146 ILogger]: Analyzing trace with hash -848826224, now seen corresponding path program 1 times [2019-05-23 11:15:29,875 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:29,875 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:29,876 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:29,876 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:15:29,876 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:29,888 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:29,925 INFO L146 ILogger]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:15:29,926 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:15:29,926 INFO L146 ILogger]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-05-23 11:15:29,927 INFO L146 ILogger]: Interpolant automaton has 3 states [2019-05-23 11:15:29,928 INFO L146 ILogger]: Constructing interpolant automaton starting with 3 interpolants. [2019-05-23 11:15:29,928 INFO L146 ILogger]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-05-23 11:15:29,928 INFO L146 ILogger]: Start difference. First operand 35 states and 39 transitions. Second operand 3 states. [2019-05-23 11:15:30,106 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:30,106 INFO L146 ILogger]: Finished difference Result 73 states and 84 transitions. [2019-05-23 11:15:30,107 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-05-23 11:15:30,107 INFO L146 ILogger]: Start accepts. Automaton has 3 states. Word has length 22 [2019-05-23 11:15:30,107 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:30,108 INFO L146 ILogger]: With dead ends: 73 [2019-05-23 11:15:30,108 INFO L146 ILogger]: Without dead ends: 47 [2019-05-23 11:15:30,109 INFO L146 ILogger]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-05-23 11:15:30,110 INFO L146 ILogger]: Start minimizeSevpa. Operand 47 states. [2019-05-23 11:15:30,115 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 47 to 39. [2019-05-23 11:15:30,115 INFO L146 ILogger]: Start removeUnreachable. Operand 39 states. [2019-05-23 11:15:30,116 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2019-05-23 11:15:30,116 INFO L146 ILogger]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 22 [2019-05-23 11:15:30,117 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:30,117 INFO L146 ILogger]: Abstraction has 39 states and 43 transitions. [2019-05-23 11:15:30,117 INFO L146 ILogger]: Interpolant automaton has 3 states. [2019-05-23 11:15:30,117 INFO L146 ILogger]: Start isEmpty. Operand 39 states and 43 transitions. [2019-05-23 11:15:30,118 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 35 [2019-05-23 11:15:30,118 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:30,119 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:15:30,119 INFO L146 ILogger]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:30,119 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:30,119 INFO L146 ILogger]: Analyzing trace with hash -261742258, now seen corresponding path program 1 times [2019-05-23 11:15:30,120 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:30,120 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:30,121 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:30,121 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:15:30,121 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:30,150 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:30,238 INFO L146 ILogger]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-05-23 11:15:30,238 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:30,239 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:15:30,257 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:15:30,292 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:30,293 INFO L146 ILogger]: Trace formula consists of 59 conjuncts, 3 conjunts are in the unsatisfiable core [2019-05-23 11:15:30,299 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:15:30,391 INFO L146 ILogger]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-05-23 11:15:30,415 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:15:30,415 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2019-05-23 11:15:30,416 INFO L146 ILogger]: Interpolant automaton has 5 states [2019-05-23 11:15:30,416 INFO L146 ILogger]: Constructing interpolant automaton starting with 5 interpolants. [2019-05-23 11:15:30,416 INFO L146 ILogger]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-05-23 11:15:30,416 INFO L146 ILogger]: Start difference. First operand 39 states and 43 transitions. Second operand 5 states. [2019-05-23 11:15:30,721 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:30,721 INFO L146 ILogger]: Finished difference Result 88 states and 99 transitions. [2019-05-23 11:15:30,726 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-05-23 11:15:30,726 INFO L146 ILogger]: Start accepts. Automaton has 5 states. Word has length 34 [2019-05-23 11:15:30,726 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:30,727 INFO L146 ILogger]: With dead ends: 88 [2019-05-23 11:15:30,728 INFO L146 ILogger]: Without dead ends: 59 [2019-05-23 11:15:30,728 INFO L146 ILogger]: 0 DeclaredPredicates, 37 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-05-23 11:15:30,729 INFO L146 ILogger]: Start minimizeSevpa. Operand 59 states. [2019-05-23 11:15:30,735 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 59 to 51. [2019-05-23 11:15:30,736 INFO L146 ILogger]: Start removeUnreachable. Operand 51 states. [2019-05-23 11:15:30,738 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 51 states to 51 states and 55 transitions. [2019-05-23 11:15:30,739 INFO L146 ILogger]: Start accepts. Automaton has 51 states and 55 transitions. Word has length 34 [2019-05-23 11:15:30,739 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:30,739 INFO L146 ILogger]: Abstraction has 51 states and 55 transitions. [2019-05-23 11:15:30,739 INFO L146 ILogger]: Interpolant automaton has 5 states. [2019-05-23 11:15:30,739 INFO L146 ILogger]: Start isEmpty. Operand 51 states and 55 transitions. [2019-05-23 11:15:30,740 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 47 [2019-05-23 11:15:30,740 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:30,740 INFO L146 ILogger]: trace histogram [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] [2019-05-23 11:15:30,741 INFO L146 ILogger]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:30,741 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:30,741 INFO L146 ILogger]: Analyzing trace with hash 1172589136, now seen corresponding path program 2 times [2019-05-23 11:15:30,741 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:30,742 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:30,742 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:30,742 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:15:30,743 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:30,768 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:30,883 INFO L146 ILogger]: Checked inductivity of 20 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-05-23 11:15:30,883 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:30,883 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:15:30,899 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:15:30,947 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:15:30,947 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:30,948 INFO L146 ILogger]: Trace formula consists of 75 conjuncts, 4 conjunts are in the unsatisfiable core [2019-05-23 11:15:30,951 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:15:31,037 INFO L146 ILogger]: Checked inductivity of 20 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-05-23 11:15:31,065 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:15:31,065 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2019-05-23 11:15:31,066 INFO L146 ILogger]: Interpolant automaton has 6 states [2019-05-23 11:15:31,066 INFO L146 ILogger]: Constructing interpolant automaton starting with 6 interpolants. [2019-05-23 11:15:31,066 INFO L146 ILogger]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-05-23 11:15:31,067 INFO L146 ILogger]: Start difference. First operand 51 states and 55 transitions. Second operand 6 states. [2019-05-23 11:15:31,334 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:31,334 INFO L146 ILogger]: Finished difference Result 109 states and 120 transitions. [2019-05-23 11:15:31,334 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-05-23 11:15:31,335 INFO L146 ILogger]: Start accepts. Automaton has 6 states. Word has length 46 [2019-05-23 11:15:31,335 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:31,336 INFO L146 ILogger]: With dead ends: 109 [2019-05-23 11:15:31,337 INFO L146 ILogger]: Without dead ends: 71 [2019-05-23 11:15:31,338 INFO L146 ILogger]: 0 DeclaredPredicates, 50 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-05-23 11:15:31,339 INFO L146 ILogger]: Start minimizeSevpa. Operand 71 states. [2019-05-23 11:15:31,344 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 71 to 63. [2019-05-23 11:15:31,345 INFO L146 ILogger]: Start removeUnreachable. Operand 63 states. [2019-05-23 11:15:31,346 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 63 states to 63 states and 67 transitions. [2019-05-23 11:15:31,346 INFO L146 ILogger]: Start accepts. Automaton has 63 states and 67 transitions. Word has length 46 [2019-05-23 11:15:31,346 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:31,346 INFO L146 ILogger]: Abstraction has 63 states and 67 transitions. [2019-05-23 11:15:31,346 INFO L146 ILogger]: Interpolant automaton has 6 states. [2019-05-23 11:15:31,347 INFO L146 ILogger]: Start isEmpty. Operand 63 states and 67 transitions. [2019-05-23 11:15:31,348 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 59 [2019-05-23 11:15:31,348 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:31,348 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:15:31,349 INFO L146 ILogger]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:31,349 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:31,349 INFO L146 ILogger]: Analyzing trace with hash 1724290574, now seen corresponding path program 3 times [2019-05-23 11:15:31,349 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:31,349 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:31,350 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:31,350 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:15:31,351 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:31,381 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:31,468 INFO L146 ILogger]: Checked inductivity of 48 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-05-23 11:15:31,469 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:31,469 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:15:31,478 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:15:31,559 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-05-23 11:15:31,559 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:31,561 INFO L146 ILogger]: Trace formula consists of 91 conjuncts, 5 conjunts are in the unsatisfiable core [2019-05-23 11:15:31,564 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:15:31,670 INFO L146 ILogger]: Checked inductivity of 48 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-05-23 11:15:31,705 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:15:31,706 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2019-05-23 11:15:31,706 INFO L146 ILogger]: Interpolant automaton has 7 states [2019-05-23 11:15:31,706 INFO L146 ILogger]: Constructing interpolant automaton starting with 7 interpolants. [2019-05-23 11:15:31,707 INFO L146 ILogger]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-05-23 11:15:31,707 INFO L146 ILogger]: Start difference. First operand 63 states and 67 transitions. Second operand 7 states. [2019-05-23 11:15:32,124 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:32,124 INFO L146 ILogger]: Finished difference Result 130 states and 141 transitions. [2019-05-23 11:15:32,129 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-05-23 11:15:32,129 INFO L146 ILogger]: Start accepts. Automaton has 7 states. Word has length 58 [2019-05-23 11:15:32,129 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:32,130 INFO L146 ILogger]: With dead ends: 130 [2019-05-23 11:15:32,130 INFO L146 ILogger]: Without dead ends: 83 [2019-05-23 11:15:32,131 INFO L146 ILogger]: 0 DeclaredPredicates, 63 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-05-23 11:15:32,131 INFO L146 ILogger]: Start minimizeSevpa. Operand 83 states. [2019-05-23 11:15:32,139 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 83 to 75. [2019-05-23 11:15:32,139 INFO L146 ILogger]: Start removeUnreachable. Operand 75 states. [2019-05-23 11:15:32,140 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 75 states to 75 states and 79 transitions. [2019-05-23 11:15:32,140 INFO L146 ILogger]: Start accepts. Automaton has 75 states and 79 transitions. Word has length 58 [2019-05-23 11:15:32,140 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:32,140 INFO L146 ILogger]: Abstraction has 75 states and 79 transitions. [2019-05-23 11:15:32,140 INFO L146 ILogger]: Interpolant automaton has 7 states. [2019-05-23 11:15:32,141 INFO L146 ILogger]: Start isEmpty. Operand 75 states and 79 transitions. [2019-05-23 11:15:32,142 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 71 [2019-05-23 11:15:32,142 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:32,142 INFO L146 ILogger]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:15:32,142 INFO L146 ILogger]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:32,142 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:32,143 INFO L146 ILogger]: Analyzing trace with hash -571894768, now seen corresponding path program 4 times [2019-05-23 11:15:32,143 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:32,143 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:32,144 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:32,144 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:15:32,144 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:32,175 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:32,269 INFO L146 ILogger]: Checked inductivity of 88 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2019-05-23 11:15:32,269 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:32,269 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:15:32,280 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:15:32,325 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:15:32,325 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:32,326 INFO L146 ILogger]: Trace formula consists of 107 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 11:15:32,329 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:15:32,375 INFO L146 ILogger]: Checked inductivity of 88 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2019-05-23 11:15:32,394 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:15:32,395 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2019-05-23 11:15:32,395 INFO L146 ILogger]: Interpolant automaton has 8 states [2019-05-23 11:15:32,395 INFO L146 ILogger]: Constructing interpolant automaton starting with 8 interpolants. [2019-05-23 11:15:32,396 INFO L146 ILogger]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2019-05-23 11:15:32,396 INFO L146 ILogger]: Start difference. First operand 75 states and 79 transitions. Second operand 8 states. [2019-05-23 11:15:32,895 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:32,896 INFO L146 ILogger]: Finished difference Result 151 states and 162 transitions. [2019-05-23 11:15:32,896 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-05-23 11:15:32,896 INFO L146 ILogger]: Start accepts. Automaton has 8 states. Word has length 70 [2019-05-23 11:15:32,897 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:32,897 INFO L146 ILogger]: With dead ends: 151 [2019-05-23 11:15:32,898 INFO L146 ILogger]: Without dead ends: 95 [2019-05-23 11:15:32,898 INFO L146 ILogger]: 0 DeclaredPredicates, 76 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2019-05-23 11:15:32,899 INFO L146 ILogger]: Start minimizeSevpa. Operand 95 states. [2019-05-23 11:15:32,905 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 95 to 87. [2019-05-23 11:15:32,905 INFO L146 ILogger]: Start removeUnreachable. Operand 87 states. [2019-05-23 11:15:32,906 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 87 states to 87 states and 91 transitions. [2019-05-23 11:15:32,906 INFO L146 ILogger]: Start accepts. Automaton has 87 states and 91 transitions. Word has length 70 [2019-05-23 11:15:32,907 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:32,907 INFO L146 ILogger]: Abstraction has 87 states and 91 transitions. [2019-05-23 11:15:32,907 INFO L146 ILogger]: Interpolant automaton has 8 states. [2019-05-23 11:15:32,907 INFO L146 ILogger]: Start isEmpty. Operand 87 states and 91 transitions. [2019-05-23 11:15:32,908 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 83 [2019-05-23 11:15:32,908 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:32,909 INFO L146 ILogger]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:15:32,909 INFO L146 ILogger]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:32,909 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:32,909 INFO L146 ILogger]: Analyzing trace with hash -1026532658, now seen corresponding path program 5 times [2019-05-23 11:15:32,910 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:32,910 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:32,911 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:32,911 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:15:32,911 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:32,942 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:33,098 INFO L146 ILogger]: Checked inductivity of 140 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2019-05-23 11:15:33,099 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:33,099 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:15:33,109 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:15:33,567 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2019-05-23 11:15:33,567 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:33,570 INFO L146 ILogger]: Trace formula consists of 123 conjuncts, 7 conjunts are in the unsatisfiable core [2019-05-23 11:15:33,573 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:15:33,624 INFO L146 ILogger]: Checked inductivity of 140 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2019-05-23 11:15:33,643 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:15:33,643 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2019-05-23 11:15:33,644 INFO L146 ILogger]: Interpolant automaton has 9 states [2019-05-23 11:15:33,644 INFO L146 ILogger]: Constructing interpolant automaton starting with 9 interpolants. [2019-05-23 11:15:33,644 INFO L146 ILogger]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:15:33,645 INFO L146 ILogger]: Start difference. First operand 87 states and 91 transitions. Second operand 9 states. [2019-05-23 11:15:33,923 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:33,923 INFO L146 ILogger]: Finished difference Result 172 states and 183 transitions. [2019-05-23 11:15:33,924 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-05-23 11:15:33,924 INFO L146 ILogger]: Start accepts. Automaton has 9 states. Word has length 82 [2019-05-23 11:15:33,924 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:33,925 INFO L146 ILogger]: With dead ends: 172 [2019-05-23 11:15:33,925 INFO L146 ILogger]: Without dead ends: 107 [2019-05-23 11:15:33,926 INFO L146 ILogger]: 0 DeclaredPredicates, 89 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:15:33,926 INFO L146 ILogger]: Start minimizeSevpa. Operand 107 states. [2019-05-23 11:15:33,933 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 107 to 99. [2019-05-23 11:15:33,934 INFO L146 ILogger]: Start removeUnreachable. Operand 99 states. [2019-05-23 11:15:33,935 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 99 states to 99 states and 103 transitions. [2019-05-23 11:15:33,935 INFO L146 ILogger]: Start accepts. Automaton has 99 states and 103 transitions. Word has length 82 [2019-05-23 11:15:33,935 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:33,935 INFO L146 ILogger]: Abstraction has 99 states and 103 transitions. [2019-05-23 11:15:33,936 INFO L146 ILogger]: Interpolant automaton has 9 states. [2019-05-23 11:15:33,936 INFO L146 ILogger]: Start isEmpty. Operand 99 states and 103 transitions. [2019-05-23 11:15:33,937 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 95 [2019-05-23 11:15:33,937 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:33,937 INFO L146 ILogger]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:15:33,938 INFO L146 ILogger]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:33,938 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:33,938 INFO L146 ILogger]: Analyzing trace with hash 39833040, now seen corresponding path program 6 times [2019-05-23 11:15:33,938 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:33,939 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:33,939 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:33,940 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:15:33,940 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:33,970 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:34,122 INFO L146 ILogger]: Checked inductivity of 204 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2019-05-23 11:15:34,122 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:34,122 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:15:34,136 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:15:34,753 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2019-05-23 11:15:34,754 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:34,756 INFO L146 ILogger]: Trace formula consists of 139 conjuncts, 8 conjunts are in the unsatisfiable core [2019-05-23 11:15:34,759 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:15:34,787 INFO L146 ILogger]: Checked inductivity of 204 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2019-05-23 11:15:34,809 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:15:34,809 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2019-05-23 11:15:34,809 INFO L146 ILogger]: Interpolant automaton has 10 states [2019-05-23 11:15:34,809 INFO L146 ILogger]: Constructing interpolant automaton starting with 10 interpolants. [2019-05-23 11:15:34,810 INFO L146 ILogger]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2019-05-23 11:15:34,810 INFO L146 ILogger]: Start difference. First operand 99 states and 103 transitions. Second operand 10 states. [2019-05-23 11:15:35,024 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:35,024 INFO L146 ILogger]: Finished difference Result 193 states and 204 transitions. [2019-05-23 11:15:35,032 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-05-23 11:15:35,032 INFO L146 ILogger]: Start accepts. Automaton has 10 states. Word has length 94 [2019-05-23 11:15:35,032 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:35,033 INFO L146 ILogger]: With dead ends: 193 [2019-05-23 11:15:35,033 INFO L146 ILogger]: Without dead ends: 119 [2019-05-23 11:15:35,034 INFO L146 ILogger]: 0 DeclaredPredicates, 102 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2019-05-23 11:15:35,034 INFO L146 ILogger]: Start minimizeSevpa. Operand 119 states. [2019-05-23 11:15:35,041 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 119 to 111. [2019-05-23 11:15:35,042 INFO L146 ILogger]: Start removeUnreachable. Operand 111 states. [2019-05-23 11:15:35,043 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 111 states to 111 states and 115 transitions. [2019-05-23 11:15:35,043 INFO L146 ILogger]: Start accepts. Automaton has 111 states and 115 transitions. Word has length 94 [2019-05-23 11:15:35,043 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:35,043 INFO L146 ILogger]: Abstraction has 111 states and 115 transitions. [2019-05-23 11:15:35,043 INFO L146 ILogger]: Interpolant automaton has 10 states. [2019-05-23 11:15:35,044 INFO L146 ILogger]: Start isEmpty. Operand 111 states and 115 transitions. [2019-05-23 11:15:35,045 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 107 [2019-05-23 11:15:35,045 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:35,046 INFO L146 ILogger]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:15:35,046 INFO L146 ILogger]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:35,046 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:35,046 INFO L146 ILogger]: Analyzing trace with hash 331050894, now seen corresponding path program 7 times [2019-05-23 11:15:35,047 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:35,047 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:35,047 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:35,048 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:15:35,048 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:35,076 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:35,214 INFO L146 ILogger]: Checked inductivity of 280 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2019-05-23 11:15:35,214 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:35,215 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:15:35,226 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:15:35,249 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:35,250 INFO L146 ILogger]: Trace formula consists of 155 conjuncts, 9 conjunts are in the unsatisfiable core [2019-05-23 11:15:35,253 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:15:35,294 INFO L146 ILogger]: Checked inductivity of 280 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2019-05-23 11:15:35,314 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:15:35,314 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2019-05-23 11:15:35,314 INFO L146 ILogger]: Interpolant automaton has 11 states [2019-05-23 11:15:35,314 INFO L146 ILogger]: Constructing interpolant automaton starting with 11 interpolants. [2019-05-23 11:15:35,315 INFO L146 ILogger]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2019-05-23 11:15:35,315 INFO L146 ILogger]: Start difference. First operand 111 states and 115 transitions. Second operand 11 states. [2019-05-23 11:15:35,555 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:35,555 INFO L146 ILogger]: Finished difference Result 214 states and 225 transitions. [2019-05-23 11:15:35,555 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-05-23 11:15:35,556 INFO L146 ILogger]: Start accepts. Automaton has 11 states. Word has length 106 [2019-05-23 11:15:35,556 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:35,558 INFO L146 ILogger]: With dead ends: 214 [2019-05-23 11:15:35,558 INFO L146 ILogger]: Without dead ends: 131 [2019-05-23 11:15:35,559 INFO L146 ILogger]: 0 DeclaredPredicates, 115 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2019-05-23 11:15:35,559 INFO L146 ILogger]: Start minimizeSevpa. Operand 131 states. [2019-05-23 11:15:35,567 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 131 to 123. [2019-05-23 11:15:35,567 INFO L146 ILogger]: Start removeUnreachable. Operand 123 states. [2019-05-23 11:15:35,568 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 123 states to 123 states and 127 transitions. [2019-05-23 11:15:35,569 INFO L146 ILogger]: Start accepts. Automaton has 123 states and 127 transitions. Word has length 106 [2019-05-23 11:15:35,569 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:35,569 INFO L146 ILogger]: Abstraction has 123 states and 127 transitions. [2019-05-23 11:15:35,569 INFO L146 ILogger]: Interpolant automaton has 11 states. [2019-05-23 11:15:35,569 INFO L146 ILogger]: Start isEmpty. Operand 123 states and 127 transitions. [2019-05-23 11:15:35,571 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 119 [2019-05-23 11:15:35,571 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:35,571 INFO L146 ILogger]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:15:35,572 INFO L146 ILogger]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:35,572 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:35,572 INFO L146 ILogger]: Analyzing trace with hash -1322322032, now seen corresponding path program 8 times [2019-05-23 11:15:35,572 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:35,572 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:35,573 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:35,573 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:15:35,573 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:35,601 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:35,803 INFO L146 ILogger]: Checked inductivity of 368 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2019-05-23 11:15:35,803 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:35,803 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:15:35,815 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:15:35,846 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:15:35,846 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:35,847 INFO L146 ILogger]: Trace formula consists of 171 conjuncts, 10 conjunts are in the unsatisfiable core [2019-05-23 11:15:35,851 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:15:35,896 INFO L146 ILogger]: Checked inductivity of 368 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2019-05-23 11:15:35,919 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:15:35,919 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2019-05-23 11:15:35,920 INFO L146 ILogger]: Interpolant automaton has 12 states [2019-05-23 11:15:35,920 INFO L146 ILogger]: Constructing interpolant automaton starting with 12 interpolants. [2019-05-23 11:15:35,920 INFO L146 ILogger]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2019-05-23 11:15:35,920 INFO L146 ILogger]: Start difference. First operand 123 states and 127 transitions. Second operand 12 states. [2019-05-23 11:15:36,382 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:36,382 INFO L146 ILogger]: Finished difference Result 235 states and 246 transitions. [2019-05-23 11:15:36,382 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-05-23 11:15:36,383 INFO L146 ILogger]: Start accepts. Automaton has 12 states. Word has length 118 [2019-05-23 11:15:36,383 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:36,384 INFO L146 ILogger]: With dead ends: 235 [2019-05-23 11:15:36,384 INFO L146 ILogger]: Without dead ends: 143 [2019-05-23 11:15:36,385 INFO L146 ILogger]: 0 DeclaredPredicates, 128 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2019-05-23 11:15:36,386 INFO L146 ILogger]: Start minimizeSevpa. Operand 143 states. [2019-05-23 11:15:36,391 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 143 to 135. [2019-05-23 11:15:36,392 INFO L146 ILogger]: Start removeUnreachable. Operand 135 states. [2019-05-23 11:15:36,392 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 135 states to 135 states and 139 transitions. [2019-05-23 11:15:36,393 INFO L146 ILogger]: Start accepts. Automaton has 135 states and 139 transitions. Word has length 118 [2019-05-23 11:15:36,393 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:36,393 INFO L146 ILogger]: Abstraction has 135 states and 139 transitions. [2019-05-23 11:15:36,393 INFO L146 ILogger]: Interpolant automaton has 12 states. [2019-05-23 11:15:36,393 INFO L146 ILogger]: Start isEmpty. Operand 135 states and 139 transitions. [2019-05-23 11:15:36,395 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 131 [2019-05-23 11:15:36,395 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:36,396 INFO L146 ILogger]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:15:36,396 INFO L146 ILogger]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:36,396 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:36,396 INFO L146 ILogger]: Analyzing trace with hash -1480600498, now seen corresponding path program 9 times [2019-05-23 11:15:36,396 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:36,397 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:36,397 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:36,397 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:15:36,398 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:36,453 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:36,981 INFO L146 ILogger]: Checked inductivity of 468 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 351 trivial. 0 not checked. [2019-05-23 11:15:36,981 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:36,981 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:15:36,990 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:15:39,012 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2019-05-23 11:15:39,012 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:39,016 INFO L146 ILogger]: Trace formula consists of 187 conjuncts, 14 conjunts are in the unsatisfiable core [2019-05-23 11:15:39,019 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:15:39,093 INFO L146 ILogger]: Checked inductivity of 468 backedges. 25 proven. 117 refuted. 0 times theorem prover too weak. 326 trivial. 0 not checked. [2019-05-23 11:15:39,113 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:15:39,113 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14] total 15 [2019-05-23 11:15:39,114 INFO L146 ILogger]: Interpolant automaton has 15 states [2019-05-23 11:15:39,114 INFO L146 ILogger]: Constructing interpolant automaton starting with 15 interpolants. [2019-05-23 11:15:39,114 INFO L146 ILogger]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2019-05-23 11:15:39,114 INFO L146 ILogger]: Start difference. First operand 135 states and 139 transitions. Second operand 15 states. [2019-05-23 11:15:39,439 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:39,439 INFO L146 ILogger]: Finished difference Result 260 states and 275 transitions. [2019-05-23 11:15:39,440 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-05-23 11:15:39,441 INFO L146 ILogger]: Start accepts. Automaton has 15 states. Word has length 130 [2019-05-23 11:15:39,441 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:39,442 INFO L146 ILogger]: With dead ends: 260 [2019-05-23 11:15:39,442 INFO L146 ILogger]: Without dead ends: 159 [2019-05-23 11:15:39,443 INFO L146 ILogger]: 0 DeclaredPredicates, 141 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2019-05-23 11:15:39,443 INFO L146 ILogger]: Start minimizeSevpa. Operand 159 states. [2019-05-23 11:15:39,448 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 159 to 159. [2019-05-23 11:15:39,449 INFO L146 ILogger]: Start removeUnreachable. Operand 159 states. [2019-05-23 11:15:39,450 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 159 states to 159 states and 163 transitions. [2019-05-23 11:15:39,450 INFO L146 ILogger]: Start accepts. Automaton has 159 states and 163 transitions. Word has length 130 [2019-05-23 11:15:39,450 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:39,450 INFO L146 ILogger]: Abstraction has 159 states and 163 transitions. [2019-05-23 11:15:39,450 INFO L146 ILogger]: Interpolant automaton has 15 states. [2019-05-23 11:15:39,451 INFO L146 ILogger]: Start isEmpty. Operand 159 states and 163 transitions. [2019-05-23 11:15:39,453 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 155 [2019-05-23 11:15:39,453 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:39,453 INFO L146 ILogger]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:15:39,453 INFO L146 ILogger]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:39,454 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:39,454 INFO L146 ILogger]: Analyzing trace with hash -1944745714, now seen corresponding path program 10 times [2019-05-23 11:15:39,454 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:39,454 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:39,455 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:39,455 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:15:39,455 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:39,486 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:39,899 INFO L146 ILogger]: Checked inductivity of 704 backedges. 0 proven. 176 refuted. 0 times theorem prover too weak. 528 trivial. 0 not checked. [2019-05-23 11:15:39,899 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:39,899 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:15:39,909 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:15:39,968 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:15:39,968 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:39,969 INFO L146 ILogger]: Trace formula consists of 219 conjuncts, 13 conjunts are in the unsatisfiable core [2019-05-23 11:15:39,984 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:15:40,032 INFO L146 ILogger]: Checked inductivity of 704 backedges. 0 proven. 176 refuted. 0 times theorem prover too weak. 528 trivial. 0 not checked. [2019-05-23 11:15:40,053 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:15:40,053 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 15 [2019-05-23 11:15:40,053 INFO L146 ILogger]: Interpolant automaton has 15 states [2019-05-23 11:15:40,053 INFO L146 ILogger]: Constructing interpolant automaton starting with 15 interpolants. [2019-05-23 11:15:40,054 INFO L146 ILogger]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2019-05-23 11:15:40,054 INFO L146 ILogger]: Start difference. First operand 159 states and 163 transitions. Second operand 15 states. [2019-05-23 11:15:40,504 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:40,504 INFO L146 ILogger]: Finished difference Result 298 states and 309 transitions. [2019-05-23 11:15:40,504 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-05-23 11:15:40,505 INFO L146 ILogger]: Start accepts. Automaton has 15 states. Word has length 154 [2019-05-23 11:15:40,505 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:40,507 INFO L146 ILogger]: With dead ends: 298 [2019-05-23 11:15:40,508 INFO L146 ILogger]: Without dead ends: 179 [2019-05-23 11:15:40,509 INFO L146 ILogger]: 0 DeclaredPredicates, 167 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2019-05-23 11:15:40,509 INFO L146 ILogger]: Start minimizeSevpa. Operand 179 states. [2019-05-23 11:15:40,513 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 179 to 171. [2019-05-23 11:15:40,514 INFO L146 ILogger]: Start removeUnreachable. Operand 171 states. [2019-05-23 11:15:40,514 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 171 states to 171 states and 175 transitions. [2019-05-23 11:15:40,515 INFO L146 ILogger]: Start accepts. Automaton has 171 states and 175 transitions. Word has length 154 [2019-05-23 11:15:40,515 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:40,515 INFO L146 ILogger]: Abstraction has 171 states and 175 transitions. [2019-05-23 11:15:40,515 INFO L146 ILogger]: Interpolant automaton has 15 states. [2019-05-23 11:15:40,515 INFO L146 ILogger]: Start isEmpty. Operand 171 states and 175 transitions. [2019-05-23 11:15:40,517 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 167 [2019-05-23 11:15:40,517 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:40,518 INFO L146 ILogger]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:15:40,518 INFO L146 ILogger]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:40,518 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:40,518 INFO L146 ILogger]: Analyzing trace with hash 2054691600, now seen corresponding path program 11 times [2019-05-23 11:15:40,518 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:40,519 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:40,519 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:40,519 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:15:40,519 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:40,543 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:40,799 INFO L146 ILogger]: Checked inductivity of 840 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 630 trivial. 0 not checked. [2019-05-23 11:15:40,800 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:40,800 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:15:40,808 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1