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_copy7_false-unreach-call_ground.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-7aa59a0 [2019-05-23 11:14:16,508 INFO L146 ILogger]: Resetting all preferences to default values... [2019-05-23 11:14:16,510 INFO L146 ILogger]: Resetting UltimateCore preferences to default values [2019-05-23 11:14:16,524 INFO L146 ILogger]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-05-23 11:14:16,525 INFO L146 ILogger]: Resetting Boogie Preprocessor preferences to default values [2019-05-23 11:14:16,529 INFO L146 ILogger]: Resetting Boogie Procedure Inliner preferences to default values [2019-05-23 11:14:16,531 INFO L146 ILogger]: Resetting Abstract Interpretation preferences to default values [2019-05-23 11:14:16,534 INFO L146 ILogger]: Resetting LassoRanker preferences to default values [2019-05-23 11:14:16,536 INFO L146 ILogger]: Resetting Reaching Definitions preferences to default values [2019-05-23 11:14:16,537 INFO L146 ILogger]: Resetting SyntaxChecker preferences to default values [2019-05-23 11:14:16,538 INFO L146 ILogger]: Büchi Program Product provides no preferences, ignoring... [2019-05-23 11:14:16,539 INFO L146 ILogger]: Resetting LTL2Aut preferences to default values [2019-05-23 11:14:16,540 INFO L146 ILogger]: Resetting PEA to Boogie preferences to default values [2019-05-23 11:14:16,543 INFO L146 ILogger]: Resetting BlockEncodingV2 preferences to default values [2019-05-23 11:14:16,544 INFO L146 ILogger]: Resetting ChcToBoogie preferences to default values [2019-05-23 11:14:16,545 INFO L146 ILogger]: Resetting AutomataScriptInterpreter preferences to default values [2019-05-23 11:14:16,546 INFO L146 ILogger]: Resetting BuchiAutomizer preferences to default values [2019-05-23 11:14:16,551 INFO L146 ILogger]: Resetting CACSL2BoogieTranslator preferences to default values [2019-05-23 11:14:16,556 INFO L146 ILogger]: Resetting CodeCheck preferences to default values [2019-05-23 11:14:16,561 INFO L146 ILogger]: Resetting InvariantSynthesis preferences to default values [2019-05-23 11:14:16,562 INFO L146 ILogger]: Resetting RCFGBuilder preferences to default values [2019-05-23 11:14:16,567 INFO L146 ILogger]: Resetting TraceAbstraction preferences to default values [2019-05-23 11:14:16,572 INFO L146 ILogger]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-05-23 11:14:16,573 INFO L146 ILogger]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-05-23 11:14:16,573 INFO L146 ILogger]: Resetting TreeAutomizer preferences to default values [2019-05-23 11:14:16,575 INFO L146 ILogger]: Resetting IcfgToChc preferences to default values [2019-05-23 11:14:16,575 INFO L146 ILogger]: Resetting IcfgTransformer preferences to default values [2019-05-23 11:14:16,577 INFO L146 ILogger]: ReqToTest provides no preferences, ignoring... [2019-05-23 11:14:16,577 INFO L146 ILogger]: Resetting Boogie Printer preferences to default values [2019-05-23 11:14:16,578 INFO L146 ILogger]: Resetting ChcSmtPrinter preferences to default values [2019-05-23 11:14:16,580 INFO L146 ILogger]: Resetting ReqPrinter preferences to default values [2019-05-23 11:14:16,583 INFO L146 ILogger]: Resetting Witness Printer preferences to default values [2019-05-23 11:14:16,585 INFO L146 ILogger]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-05-23 11:14:16,585 INFO L146 ILogger]: Resetting CDTParser preferences to default values [2019-05-23 11:14:16,586 INFO L146 ILogger]: AutomataScriptParser provides no preferences, ignoring... [2019-05-23 11:14:16,586 INFO L146 ILogger]: ReqParser provides no preferences, ignoring... [2019-05-23 11:14:16,586 INFO L146 ILogger]: Resetting SmtParser preferences to default values [2019-05-23 11:14:16,587 INFO L146 ILogger]: Resetting Witness Parser preferences to default values [2019-05-23 11:14:16,588 INFO L146 ILogger]: Finished resetting all preferences to default values... [2019-05-23 11:14:16,589 INFO L146 ILogger]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-05-23 11:14:16,616 INFO L146 ILogger]: Loading preferences was successful [2019-05-23 11:14:16,616 INFO L146 ILogger]: Preferences different from defaults after loading the file: [2019-05-23 11:14:16,618 INFO L146 ILogger]: Preferences of BlockEncodingV2 differ from their defaults: [2019-05-23 11:14:16,619 INFO L146 ILogger]: * Create parallel compositions if possible=false [2019-05-23 11:14:16,619 INFO L146 ILogger]: * Use SBE=true [2019-05-23 11:14:16,620 INFO L146 ILogger]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-05-23 11:14:16,620 INFO L146 ILogger]: * sizeof long=4 [2019-05-23 11:14:16,620 INFO L146 ILogger]: * Overapproximate operations on floating types=true [2019-05-23 11:14:16,620 INFO L146 ILogger]: * sizeof POINTER=4 [2019-05-23 11:14:16,621 INFO L146 ILogger]: * Check division by zero=IGNORE [2019-05-23 11:14:16,621 INFO L146 ILogger]: * Pointer to allocated memory at dereference=IGNORE [2019-05-23 11:14:16,621 INFO L146 ILogger]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-05-23 11:14:16,621 INFO L146 ILogger]: * Check array bounds for arrays that are off heap=IGNORE [2019-05-23 11:14:16,621 INFO L146 ILogger]: * sizeof long double=12 [2019-05-23 11:14:16,623 INFO L146 ILogger]: * Check if freed pointer was valid=false [2019-05-23 11:14:16,623 INFO L146 ILogger]: * Use constant arrays=true [2019-05-23 11:14:16,623 INFO L146 ILogger]: * Pointer base address is valid at dereference=IGNORE [2019-05-23 11:14:16,624 INFO L146 ILogger]: Preferences of RCFGBuilder differ from their defaults: [2019-05-23 11:14:16,624 INFO L146 ILogger]: * Size of a code block=SequenceOfStatements [2019-05-23 11:14:16,624 INFO L146 ILogger]: * To the following directory=./dump/ [2019-05-23 11:14:16,624 INFO L146 ILogger]: * SMT solver=External_DefaultMode [2019-05-23 11:14:16,625 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-05-23 11:14:16,625 INFO L146 ILogger]: Preferences of TraceAbstraction differ from their defaults: [2019-05-23 11:14:16,625 INFO L146 ILogger]: * Compute Interpolants along a Counterexample=FPandBP [2019-05-23 11:14:16,626 INFO L146 ILogger]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-05-23 11:14:16,626 INFO L146 ILogger]: * Trace refinement strategy=CAMEL [2019-05-23 11:14:16,626 INFO L146 ILogger]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-05-23 11:14:16,626 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-05-23 11:14:16,627 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 11:14:16,683 INFO L146 ILogger]: Repository-Root is: /tmp [2019-05-23 11:14:16,697 INFO L146 ILogger]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-05-23 11:14:16,702 INFO L146 ILogger]: [Toolchain 1]: Toolchain selected. [2019-05-23 11:14:16,704 INFO L146 ILogger]: Initializing CDTParser... [2019-05-23 11:14:16,704 INFO L146 ILogger]: CDTParser initialized [2019-05-23 11:14:16,705 INFO L146 ILogger]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/array-examples/standard_copy7_false-unreach-call_ground.i [2019-05-23 11:14:16,774 INFO L146 ILogger]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd4c0ca1d/dac47b5a3869498daa58dc1ccd6d0028/FLAGae100727c [2019-05-23 11:14:17,215 INFO L146 ILogger]: Found 1 translation units. [2019-05-23 11:14:17,217 INFO L146 ILogger]: Scanning /storage/repos/svcomp/c/array-examples/standard_copy7_false-unreach-call_ground.i [2019-05-23 11:14:17,223 INFO L146 ILogger]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd4c0ca1d/dac47b5a3869498daa58dc1ccd6d0028/FLAGae100727c [2019-05-23 11:14:17,574 INFO L146 ILogger]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd4c0ca1d/dac47b5a3869498daa58dc1ccd6d0028 [2019-05-23 11:14:17,584 INFO L146 ILogger]: ####################### [Toolchain 1] ####################### [2019-05-23 11:14:17,586 INFO L146 ILogger]: Walking toolchain with 5 elements. [2019-05-23 11:14:17,587 INFO L146 ILogger]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-05-23 11:14:17,587 INFO L146 ILogger]: Initializing CACSL2BoogieTranslator... [2019-05-23 11:14:17,590 INFO L146 ILogger]: CACSL2BoogieTranslator initialized [2019-05-23 11:14:17,592 INFO L146 ILogger]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:14:17" (1/1) ... [2019-05-23 11:14:17,595 INFO L146 ILogger]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@165f57b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:14:17, skipping insertion in model container [2019-05-23 11:14:17,595 INFO L146 ILogger]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:14:17" (1/1) ... [2019-05-23 11:14:17,603 INFO L146 ILogger]: Starting translation in SV-COMP mode [2019-05-23 11:14:17,628 INFO L146 ILogger]: Built tables and reachable declarations [2019-05-23 11:14:17,839 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:14:17,847 INFO L146 ILogger]: Completed pre-run [2019-05-23 11:14:17,880 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:14:17,904 INFO L146 ILogger]: Completed translation [2019-05-23 11:14:17,904 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:14:17 WrapperNode [2019-05-23 11:14:17,904 INFO L146 ILogger]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-05-23 11:14:17,905 INFO L146 ILogger]: ------------------------Boogie Procedure Inliner---------------------------- [2019-05-23 11:14:17,906 INFO L146 ILogger]: Initializing Boogie Procedure Inliner... [2019-05-23 11:14:17,906 INFO L146 ILogger]: Boogie Procedure Inliner initialized [2019-05-23 11:14:17,916 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:14:17" (1/1) ... [2019-05-23 11:14:17,930 INFO L146 ILogger]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:14:17" (1/1) ... [2019-05-23 11:14:17,972 INFO L146 ILogger]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-05-23 11:14:17,972 INFO L146 ILogger]: ------------------------Boogie Preprocessor---------------------------- [2019-05-23 11:14:17,973 INFO L146 ILogger]: Initializing Boogie Preprocessor... [2019-05-23 11:14:17,973 INFO L146 ILogger]: Boogie Preprocessor initialized [2019-05-23 11:14:17,985 INFO L146 ILogger]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:14:17" (1/1) ... [2019-05-23 11:14:17,985 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:14:17" (1/1) ... [2019-05-23 11:14:17,988 INFO L146 ILogger]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:14:17" (1/1) ... [2019-05-23 11:14:17,989 INFO L146 ILogger]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:14:17" (1/1) ... [2019-05-23 11:14:18,005 INFO L146 ILogger]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:14:17" (1/1) ... [2019-05-23 11:14:18,011 INFO L146 ILogger]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:14:17" (1/1) ... [2019-05-23 11:14:18,129 INFO L146 ILogger]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:14:17" (1/1) ... [2019-05-23 11:14:18,132 INFO L146 ILogger]: ------------------------ END Boogie Preprocessor---------------------------- [2019-05-23 11:14:18,133 INFO L146 ILogger]: ------------------------RCFGBuilder---------------------------- [2019-05-23 11:14:18,133 INFO L146 ILogger]: Initializing RCFGBuilder... [2019-05-23 11:14:18,133 INFO L146 ILogger]: RCFGBuilder initialized [2019-05-23 11:14:18,134 INFO L146 ILogger]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:14:17" (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 11:14:18,205 INFO L146 ILogger]: Found specification of procedure write~int [2019-05-23 11:14:18,205 INFO L146 ILogger]: Found specification of procedure ULTIMATE.start [2019-05-23 11:14:18,205 INFO L146 ILogger]: Found implementation of procedure ULTIMATE.start [2019-05-23 11:14:18,206 INFO L146 ILogger]: Found specification of procedure read~int [2019-05-23 11:14:18,206 INFO L146 ILogger]: Found specification of procedure #Ultimate.allocOnStack [2019-05-23 11:14:18,206 INFO L146 ILogger]: Found specification of procedure ULTIMATE.dealloc [2019-05-23 11:14:19,028 INFO L146 ILogger]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-05-23 11:14:19,029 INFO L146 ILogger]: Removed 15 assume(true) statements. [2019-05-23 11:14:19,030 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:14:19 BoogieIcfgContainer [2019-05-23 11:14:19,030 INFO L146 ILogger]: ------------------------ END RCFGBuilder---------------------------- [2019-05-23 11:14:19,031 INFO L146 ILogger]: ------------------------TraceAbstraction---------------------------- [2019-05-23 11:14:19,031 INFO L146 ILogger]: Initializing TraceAbstraction... [2019-05-23 11:14:19,034 INFO L146 ILogger]: TraceAbstraction initialized [2019-05-23 11:14:19,035 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.05 11:14:17" (1/3) ... [2019-05-23 11:14:19,036 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63cb0ba8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:14:19, skipping insertion in model container [2019-05-23 11:14:19,036 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:14:17" (2/3) ... [2019-05-23 11:14:19,036 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63cb0ba8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:14:19, skipping insertion in model container [2019-05-23 11:14:19,037 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:14:19" (3/3) ... [2019-05-23 11:14:19,038 INFO L146 ILogger]: Analyzing ICFG standard_copy7_false-unreach-call_ground.i [2019-05-23 11:14:19,048 INFO L146 ILogger]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-05-23 11:14:19,058 INFO L146 ILogger]: Appying trace abstraction to program that has 1 error locations. [2019-05-23 11:14:19,074 INFO L146 ILogger]: Starting to check reachability of 1 error locations. [2019-05-23 11:14:19,105 INFO L146 ILogger]: Using default assertion order modulation [2019-05-23 11:14:19,106 INFO L146 ILogger]: Interprodecural is true [2019-05-23 11:14:19,106 INFO L146 ILogger]: Hoare is true [2019-05-23 11:14:19,106 INFO L146 ILogger]: Compute interpolants for FPandBP [2019-05-23 11:14:19,106 INFO L146 ILogger]: Backedges is STRAIGHT_LINE [2019-05-23 11:14:19,106 INFO L146 ILogger]: Determinization is PREDICATE_ABSTRACTION [2019-05-23 11:14:19,107 INFO L146 ILogger]: Difference is false [2019-05-23 11:14:19,107 INFO L146 ILogger]: Minimize is MINIMIZE_SEVPA [2019-05-23 11:14:19,107 INFO L146 ILogger]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-05-23 11:14:19,125 INFO L146 ILogger]: Start isEmpty. Operand 117 states. [2019-05-23 11:14:19,134 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 41 [2019-05-23 11:14:19,134 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:19,135 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:14:19,138 INFO L146 ILogger]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:19,143 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:19,144 INFO L146 ILogger]: Analyzing trace with hash -1645389647, now seen corresponding path program 1 times [2019-05-23 11:14:19,146 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:19,146 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:19,183 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:19,184 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:14:19,184 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:19,237 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:19,298 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 11:14:19,300 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:14:19,301 INFO L146 ILogger]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-05-23 11:14:19,305 INFO L146 ILogger]: Interpolant automaton has 2 states [2019-05-23 11:14:19,316 INFO L146 ILogger]: Constructing interpolant automaton starting with 2 interpolants. [2019-05-23 11:14:19,317 INFO L146 ILogger]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-05-23 11:14:19,318 INFO L146 ILogger]: Start difference. First operand 117 states. Second operand 2 states. [2019-05-23 11:14:19,345 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:19,345 INFO L146 ILogger]: Finished difference Result 210 states and 244 transitions. [2019-05-23 11:14:19,346 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-05-23 11:14:19,347 INFO L146 ILogger]: Start accepts. Automaton has 2 states. Word has length 40 [2019-05-23 11:14:19,348 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:19,360 INFO L146 ILogger]: With dead ends: 210 [2019-05-23 11:14:19,360 INFO L146 ILogger]: Without dead ends: 97 [2019-05-23 11:14:19,364 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 11:14:19,383 INFO L146 ILogger]: Start minimizeSevpa. Operand 97 states. [2019-05-23 11:14:19,403 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 97 to 97. [2019-05-23 11:14:19,404 INFO L146 ILogger]: Start removeUnreachable. Operand 97 states. [2019-05-23 11:14:19,407 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 97 states to 97 states and 105 transitions. [2019-05-23 11:14:19,409 INFO L146 ILogger]: Start accepts. Automaton has 97 states and 105 transitions. Word has length 40 [2019-05-23 11:14:19,409 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:19,409 INFO L146 ILogger]: Abstraction has 97 states and 105 transitions. [2019-05-23 11:14:19,409 INFO L146 ILogger]: Interpolant automaton has 2 states. [2019-05-23 11:14:19,410 INFO L146 ILogger]: Start isEmpty. Operand 97 states and 105 transitions. [2019-05-23 11:14:19,412 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 41 [2019-05-23 11:14:19,412 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:19,412 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:14:19,413 INFO L146 ILogger]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:19,413 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:19,413 INFO L146 ILogger]: Analyzing trace with hash 1198793736, now seen corresponding path program 1 times [2019-05-23 11:14:19,413 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:19,414 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:19,415 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:19,415 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:14:19,415 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:19,463 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:19,553 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 11:14:19,556 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:14:19,556 INFO L146 ILogger]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-05-23 11:14:19,558 INFO L146 ILogger]: Interpolant automaton has 3 states [2019-05-23 11:14:19,558 INFO L146 ILogger]: Constructing interpolant automaton starting with 3 interpolants. [2019-05-23 11:14:19,559 INFO L146 ILogger]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-05-23 11:14:19,560 INFO L146 ILogger]: Start difference. First operand 97 states and 105 transitions. Second operand 3 states. [2019-05-23 11:14:19,661 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:19,661 INFO L146 ILogger]: Finished difference Result 179 states and 195 transitions. [2019-05-23 11:14:19,662 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-05-23 11:14:19,662 INFO L146 ILogger]: Start accepts. Automaton has 3 states. Word has length 40 [2019-05-23 11:14:19,662 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:19,664 INFO L146 ILogger]: With dead ends: 179 [2019-05-23 11:14:19,664 INFO L146 ILogger]: Without dead ends: 106 [2019-05-23 11:14:19,667 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 11:14:19,667 INFO L146 ILogger]: Start minimizeSevpa. Operand 106 states. [2019-05-23 11:14:19,679 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 106 to 98. [2019-05-23 11:14:19,681 INFO L146 ILogger]: Start removeUnreachable. Operand 98 states. [2019-05-23 11:14:19,685 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 98 states to 98 states and 106 transitions. [2019-05-23 11:14:19,685 INFO L146 ILogger]: Start accepts. Automaton has 98 states and 106 transitions. Word has length 40 [2019-05-23 11:14:19,686 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:19,686 INFO L146 ILogger]: Abstraction has 98 states and 106 transitions. [2019-05-23 11:14:19,687 INFO L146 ILogger]: Interpolant automaton has 3 states. [2019-05-23 11:14:19,687 INFO L146 ILogger]: Start isEmpty. Operand 98 states and 106 transitions. [2019-05-23 11:14:19,689 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 51 [2019-05-23 11:14:19,689 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:19,690 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:14:19,690 INFO L146 ILogger]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:19,690 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:19,690 INFO L146 ILogger]: Analyzing trace with hash 1105621038, now seen corresponding path program 1 times [2019-05-23 11:14:19,691 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:19,691 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:19,692 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:19,693 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:14:19,693 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:19,748 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:19,849 INFO L146 ILogger]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:14:19,849 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:14:19,850 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 11:14:19,870 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:14:19,921 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:19,923 INFO L146 ILogger]: Trace formula consists of 129 conjuncts, 2 conjunts are in the unsatisfiable core [2019-05-23 11:14:19,930 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:14:19,977 INFO L146 ILogger]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-05-23 11:14:20,003 INFO L146 ILogger]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-05-23 11:14:20,003 INFO L146 ILogger]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2019-05-23 11:14:20,004 INFO L146 ILogger]: Interpolant automaton has 6 states [2019-05-23 11:14:20,004 INFO L146 ILogger]: Constructing interpolant automaton starting with 6 interpolants. [2019-05-23 11:14:20,005 INFO L146 ILogger]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-05-23 11:14:20,005 INFO L146 ILogger]: Start difference. First operand 98 states and 106 transitions. Second operand 6 states. [2019-05-23 11:14:20,813 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:20,814 INFO L146 ILogger]: Finished difference Result 231 states and 254 transitions. [2019-05-23 11:14:20,815 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-05-23 11:14:20,815 INFO L146 ILogger]: Start accepts. Automaton has 6 states. Word has length 50 [2019-05-23 11:14:20,815 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:20,817 INFO L146 ILogger]: With dead ends: 231 [2019-05-23 11:14:20,817 INFO L146 ILogger]: Without dead ends: 158 [2019-05-23 11:14:20,818 INFO L146 ILogger]: 0 DeclaredPredicates, 56 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2019-05-23 11:14:20,819 INFO L146 ILogger]: Start minimizeSevpa. Operand 158 states. [2019-05-23 11:14:20,828 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 158 to 115. [2019-05-23 11:14:20,828 INFO L146 ILogger]: Start removeUnreachable. Operand 115 states. [2019-05-23 11:14:20,830 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 115 states to 115 states and 123 transitions. [2019-05-23 11:14:20,830 INFO L146 ILogger]: Start accepts. Automaton has 115 states and 123 transitions. Word has length 50 [2019-05-23 11:14:20,830 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:20,830 INFO L146 ILogger]: Abstraction has 115 states and 123 transitions. [2019-05-23 11:14:20,831 INFO L146 ILogger]: Interpolant automaton has 6 states. [2019-05-23 11:14:20,831 INFO L146 ILogger]: Start isEmpty. Operand 115 states and 123 transitions. [2019-05-23 11:14:20,834 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 110 [2019-05-23 11:14:20,834 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:20,834 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:14:20,835 INFO L146 ILogger]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:20,835 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:20,836 INFO L146 ILogger]: Analyzing trace with hash -232257222, now seen corresponding path program 1 times [2019-05-23 11:14:20,836 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:20,836 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:20,837 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:20,837 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:14:20,837 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:20,860 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:20,974 INFO L146 ILogger]: Checked inductivity of 19 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-05-23 11:14:20,974 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:14:20,974 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 11:14:20,995 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:14:21,069 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:21,070 INFO L146 ILogger]: Trace formula consists of 213 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 11:14:21,077 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:14:21,247 INFO L146 ILogger]: Checked inductivity of 19 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-05-23 11:14:21,266 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:14:21,267 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7] total 10 [2019-05-23 11:14:21,267 INFO L146 ILogger]: Interpolant automaton has 10 states [2019-05-23 11:14:21,267 INFO L146 ILogger]: Constructing interpolant automaton starting with 10 interpolants. [2019-05-23 11:14:21,268 INFO L146 ILogger]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2019-05-23 11:14:21,268 INFO L146 ILogger]: Start difference. First operand 115 states and 123 transitions. Second operand 10 states. [2019-05-23 11:14:22,196 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:22,197 INFO L146 ILogger]: Finished difference Result 255 states and 272 transitions. [2019-05-23 11:14:22,197 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-05-23 11:14:22,198 INFO L146 ILogger]: Start accepts. Automaton has 10 states. Word has length 109 [2019-05-23 11:14:22,198 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:22,200 INFO L146 ILogger]: With dead ends: 255 [2019-05-23 11:14:22,200 INFO L146 ILogger]: Without dead ends: 175 [2019-05-23 11:14:22,201 INFO L146 ILogger]: 0 DeclaredPredicates, 119 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2019-05-23 11:14:22,206 INFO L146 ILogger]: Start minimizeSevpa. Operand 175 states. [2019-05-23 11:14:22,217 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 175 to 132. [2019-05-23 11:14:22,217 INFO L146 ILogger]: Start removeUnreachable. Operand 132 states. [2019-05-23 11:14:22,218 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 132 states to 132 states and 140 transitions. [2019-05-23 11:14:22,218 INFO L146 ILogger]: Start accepts. Automaton has 132 states and 140 transitions. Word has length 109 [2019-05-23 11:14:22,218 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:22,219 INFO L146 ILogger]: Abstraction has 132 states and 140 transitions. [2019-05-23 11:14:22,219 INFO L146 ILogger]: Interpolant automaton has 10 states. [2019-05-23 11:14:22,219 INFO L146 ILogger]: Start isEmpty. Operand 132 states and 140 transitions. [2019-05-23 11:14:22,221 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 127 [2019-05-23 11:14:22,221 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:22,221 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:14:22,222 INFO L146 ILogger]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:22,222 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:22,222 INFO L146 ILogger]: Analyzing trace with hash -608688817, now seen corresponding path program 2 times [2019-05-23 11:14:22,222 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:22,222 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:22,223 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:22,223 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:14:22,223 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:22,254 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:22,407 INFO L146 ILogger]: Checked inductivity of 48 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2019-05-23 11:14:22,408 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:14:22,408 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 11:14:22,423 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:14:22,479 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:14:22,479 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:22,480 INFO L146 ILogger]: Trace formula consists of 237 conjuncts, 8 conjunts are in the unsatisfiable core [2019-05-23 11:14:22,484 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:14:22,607 INFO L146 ILogger]: Checked inductivity of 48 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-05-23 11:14:22,626 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:14:22,627 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9] total 12 [2019-05-23 11:14:22,627 INFO L146 ILogger]: Interpolant automaton has 12 states [2019-05-23 11:14:22,627 INFO L146 ILogger]: Constructing interpolant automaton starting with 12 interpolants. [2019-05-23 11:14:22,628 INFO L146 ILogger]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2019-05-23 11:14:22,628 INFO L146 ILogger]: Start difference. First operand 132 states and 140 transitions. Second operand 12 states. [2019-05-23 11:14:23,146 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:23,147 INFO L146 ILogger]: Finished difference Result 274 states and 291 transitions. [2019-05-23 11:14:23,147 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-05-23 11:14:23,147 INFO L146 ILogger]: Start accepts. Automaton has 12 states. Word has length 126 [2019-05-23 11:14:23,148 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:23,149 INFO L146 ILogger]: With dead ends: 274 [2019-05-23 11:14:23,149 INFO L146 ILogger]: Without dead ends: 187 [2019-05-23 11:14:23,150 INFO L146 ILogger]: 0 DeclaredPredicates, 138 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=95, Invalid=285, Unknown=0, NotChecked=0, Total=380 [2019-05-23 11:14:23,151 INFO L146 ILogger]: Start minimizeSevpa. Operand 187 states. [2019-05-23 11:14:23,159 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 187 to 149. [2019-05-23 11:14:23,159 INFO L146 ILogger]: Start removeUnreachable. Operand 149 states. [2019-05-23 11:14:23,160 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 149 states to 149 states and 157 transitions. [2019-05-23 11:14:23,160 INFO L146 ILogger]: Start accepts. Automaton has 149 states and 157 transitions. Word has length 126 [2019-05-23 11:14:23,160 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:23,160 INFO L146 ILogger]: Abstraction has 149 states and 157 transitions. [2019-05-23 11:14:23,160 INFO L146 ILogger]: Interpolant automaton has 12 states. [2019-05-23 11:14:23,161 INFO L146 ILogger]: Start isEmpty. Operand 149 states and 157 transitions. [2019-05-23 11:14:23,162 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 144 [2019-05-23 11:14:23,163 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:23,163 INFO L146 ILogger]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:14:23,163 INFO L146 ILogger]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:23,163 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:23,164 INFO L146 ILogger]: Analyzing trace with hash 1996224821, now seen corresponding path program 3 times [2019-05-23 11:14:23,164 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:23,164 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:23,165 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:23,165 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:14:23,165 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:23,188 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:23,445 INFO L146 ILogger]: Checked inductivity of 87 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2019-05-23 11:14:23,446 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:14:23,446 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 11:14:23,466 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:14:23,540 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-05-23 11:14:23,540 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:23,543 INFO L146 ILogger]: Trace formula consists of 199 conjuncts, 4 conjunts are in the unsatisfiable core [2019-05-23 11:14:23,555 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:14:23,669 INFO L146 ILogger]: Checked inductivity of 87 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2019-05-23 11:14:23,688 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:14:23,689 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2019-05-23 11:14:23,689 INFO L146 ILogger]: Interpolant automaton has 7 states [2019-05-23 11:14:23,689 INFO L146 ILogger]: Constructing interpolant automaton starting with 7 interpolants. [2019-05-23 11:14:23,691 INFO L146 ILogger]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-05-23 11:14:23,691 INFO L146 ILogger]: Start difference. First operand 149 states and 157 transitions. Second operand 7 states. [2019-05-23 11:14:24,071 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:24,072 INFO L146 ILogger]: Finished difference Result 240 states and 254 transitions. [2019-05-23 11:14:24,072 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-05-23 11:14:24,073 INFO L146 ILogger]: Start accepts. Automaton has 7 states. Word has length 143 [2019-05-23 11:14:24,074 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:24,076 INFO L146 ILogger]: With dead ends: 240 [2019-05-23 11:14:24,076 INFO L146 ILogger]: Without dead ends: 188 [2019-05-23 11:14:24,077 INFO L146 ILogger]: 0 DeclaredPredicates, 151 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2019-05-23 11:14:24,077 INFO L146 ILogger]: Start minimizeSevpa. Operand 188 states. [2019-05-23 11:14:24,085 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 188 to 163. [2019-05-23 11:14:24,085 INFO L146 ILogger]: Start removeUnreachable. Operand 163 states. [2019-05-23 11:14:24,086 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 163 states to 163 states and 171 transitions. [2019-05-23 11:14:24,086 INFO L146 ILogger]: Start accepts. Automaton has 163 states and 171 transitions. Word has length 143 [2019-05-23 11:14:24,087 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:24,087 INFO L146 ILogger]: Abstraction has 163 states and 171 transitions. [2019-05-23 11:14:24,087 INFO L146 ILogger]: Interpolant automaton has 7 states. [2019-05-23 11:14:24,087 INFO L146 ILogger]: Start isEmpty. Operand 163 states and 171 transitions. [2019-05-23 11:14:24,089 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 158 [2019-05-23 11:14:24,089 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:24,089 INFO L146 ILogger]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:14:24,090 INFO L146 ILogger]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:24,090 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:24,090 INFO L146 ILogger]: Analyzing trace with hash -675885227, now seen corresponding path program 4 times [2019-05-23 11:14:24,090 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:24,091 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:24,091 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:24,092 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:14:24,092 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:24,116 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:24,212 INFO L146 ILogger]: Checked inductivity of 103 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2019-05-23 11:14:24,213 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:14:24,213 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 11:14:24,222 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:14:24,554 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:14:24,555 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:24,557 INFO L146 ILogger]: Trace formula consists of 281 conjuncts, 10 conjunts are in the unsatisfiable core [2019-05-23 11:14:24,562 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:14:24,728 INFO L146 ILogger]: Checked inductivity of 103 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2019-05-23 11:14:24,748 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:14:24,749 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 11] total 14 [2019-05-23 11:14:24,749 INFO L146 ILogger]: Interpolant automaton has 14 states [2019-05-23 11:14:24,749 INFO L146 ILogger]: Constructing interpolant automaton starting with 14 interpolants. [2019-05-23 11:14:24,750 INFO L146 ILogger]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2019-05-23 11:14:24,750 INFO L146 ILogger]: Start difference. First operand 163 states and 171 transitions. Second operand 14 states. [2019-05-23 11:14:25,307 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:25,307 INFO L146 ILogger]: Finished difference Result 311 states and 328 transitions. [2019-05-23 11:14:25,311 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-05-23 11:14:25,311 INFO L146 ILogger]: Start accepts. Automaton has 14 states. Word has length 157 [2019-05-23 11:14:25,311 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:25,313 INFO L146 ILogger]: With dead ends: 311 [2019-05-23 11:14:25,313 INFO L146 ILogger]: Without dead ends: 203 [2019-05-23 11:14:25,314 INFO L146 ILogger]: 0 DeclaredPredicates, 171 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=140, Invalid=412, Unknown=0, NotChecked=0, Total=552 [2019-05-23 11:14:25,314 INFO L146 ILogger]: Start minimizeSevpa. Operand 203 states. [2019-05-23 11:14:25,320 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 203 to 180. [2019-05-23 11:14:25,321 INFO L146 ILogger]: Start removeUnreachable. Operand 180 states. [2019-05-23 11:14:25,321 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 180 states to 180 states and 188 transitions. [2019-05-23 11:14:25,322 INFO L146 ILogger]: Start accepts. Automaton has 180 states and 188 transitions. Word has length 157 [2019-05-23 11:14:25,324 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:25,324 INFO L146 ILogger]: Abstraction has 180 states and 188 transitions. [2019-05-23 11:14:25,324 INFO L146 ILogger]: Interpolant automaton has 14 states. [2019-05-23 11:14:25,324 INFO L146 ILogger]: Start isEmpty. Operand 180 states and 188 transitions. [2019-05-23 11:14:25,327 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 175 [2019-05-23 11:14:25,327 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:25,327 INFO L146 ILogger]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:14:25,327 INFO L146 ILogger]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:25,328 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:25,328 INFO L146 ILogger]: Analyzing trace with hash 137155245, now seen corresponding path program 5 times [2019-05-23 11:14:25,328 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:25,328 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:25,329 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:25,329 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:14:25,329 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:25,350 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:25,515 INFO L146 ILogger]: Checked inductivity of 152 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2019-05-23 11:14:25,516 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:14:25,516 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 11:14:25,526 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:14:37,725 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2019-05-23 11:14:37,725 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:37,736 INFO L146 ILogger]: Trace formula consists of 305 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 11:14:37,739 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:14:37,885 INFO L146 ILogger]: Checked inductivity of 152 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2019-05-23 11:14:37,907 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:14:37,907 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7] total 9 [2019-05-23 11:14:37,908 INFO L146 ILogger]: Interpolant automaton has 9 states [2019-05-23 11:14:37,908 INFO L146 ILogger]: Constructing interpolant automaton starting with 9 interpolants. [2019-05-23 11:14:37,908 INFO L146 ILogger]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:14:37,908 INFO L146 ILogger]: Start difference. First operand 180 states and 188 transitions. Second operand 9 states. [2019-05-23 11:14:38,264 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:38,264 INFO L146 ILogger]: Finished difference Result 259 states and 272 transitions. [2019-05-23 11:14:38,264 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-05-23 11:14:38,264 INFO L146 ILogger]: Start accepts. Automaton has 9 states. Word has length 174 [2019-05-23 11:14:38,265 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:38,267 INFO L146 ILogger]: With dead ends: 259 [2019-05-23 11:14:38,267 INFO L146 ILogger]: Without dead ends: 209 [2019-05-23 11:14:38,268 INFO L146 ILogger]: 0 DeclaredPredicates, 184 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2019-05-23 11:14:38,269 INFO L146 ILogger]: Start minimizeSevpa. Operand 209 states. [2019-05-23 11:14:38,275 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 209 to 194. [2019-05-23 11:14:38,275 INFO L146 ILogger]: Start removeUnreachable. Operand 194 states. [2019-05-23 11:14:38,276 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 194 states to 194 states and 202 transitions. [2019-05-23 11:14:38,276 INFO L146 ILogger]: Start accepts. Automaton has 194 states and 202 transitions. Word has length 174 [2019-05-23 11:14:38,277 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:38,277 INFO L146 ILogger]: Abstraction has 194 states and 202 transitions. [2019-05-23 11:14:38,277 INFO L146 ILogger]: Interpolant automaton has 9 states. [2019-05-23 11:14:38,277 INFO L146 ILogger]: Start isEmpty. Operand 194 states and 202 transitions. [2019-05-23 11:14:38,286 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 189 [2019-05-23 11:14:38,286 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:38,287 INFO L146 ILogger]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:14:38,287 INFO L146 ILogger]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:38,287 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:38,287 INFO L146 ILogger]: Analyzing trace with hash 1250241812, now seen corresponding path program 6 times [2019-05-23 11:14:38,287 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:38,288 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:38,288 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:38,289 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:14:38,291 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:38,325 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:38,643 INFO L146 ILogger]: Checked inductivity of 175 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2019-05-23 11:14:38,644 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:14:38,644 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 11:14:38,662 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:14:38,743 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2019-05-23 11:14:38,743 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:38,745 INFO L146 ILogger]: Trace formula consists of 213 conjuncts, 4 conjunts are in the unsatisfiable core [2019-05-23 11:14:38,749 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:14:39,005 INFO L146 ILogger]: Checked inductivity of 175 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2019-05-23 11:14:39,043 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:14:39,043 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2019-05-23 11:14:39,045 INFO L146 ILogger]: Interpolant automaton has 7 states [2019-05-23 11:14:39,045 INFO L146 ILogger]: Constructing interpolant automaton starting with 7 interpolants. [2019-05-23 11:14:39,045 INFO L146 ILogger]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-05-23 11:14:39,046 INFO L146 ILogger]: Start difference. First operand 194 states and 202 transitions. Second operand 7 states. [2019-05-23 11:14:39,491 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:39,491 INFO L146 ILogger]: Finished difference Result 238 states and 248 transitions. [2019-05-23 11:14:39,492 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-05-23 11:14:39,492 INFO L146 ILogger]: Start accepts. Automaton has 7 states. Word has length 188 [2019-05-23 11:14:39,492 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:39,494 INFO L146 ILogger]: With dead ends: 238 [2019-05-23 11:14:39,495 INFO L146 ILogger]: Without dead ends: 206 [2019-05-23 11:14:39,495 INFO L146 ILogger]: 0 DeclaredPredicates, 194 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:14:39,496 INFO L146 ILogger]: Start minimizeSevpa. Operand 206 states. [2019-05-23 11:14:39,500 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 206 to 201. [2019-05-23 11:14:39,500 INFO L146 ILogger]: Start removeUnreachable. Operand 201 states. [2019-05-23 11:14:39,501 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 201 states to 201 states and 209 transitions. [2019-05-23 11:14:39,501 INFO L146 ILogger]: Start accepts. Automaton has 201 states and 209 transitions. Word has length 188 [2019-05-23 11:14:39,501 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:39,502 INFO L146 ILogger]: Abstraction has 201 states and 209 transitions. [2019-05-23 11:14:39,502 INFO L146 ILogger]: Interpolant automaton has 7 states. [2019-05-23 11:14:39,502 INFO L146 ILogger]: Start isEmpty. Operand 201 states and 209 transitions. [2019-05-23 11:14:39,504 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 196 [2019-05-23 11:14:39,504 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:39,504 INFO L146 ILogger]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:14:39,504 INFO L146 ILogger]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:39,505 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:39,505 INFO L146 ILogger]: Analyzing trace with hash -1855407864, now seen corresponding path program 7 times [2019-05-23 11:14:39,505 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:39,505 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:39,506 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:39,506 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:14:39,506 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:39,533 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:39,822 INFO L146 ILogger]: Checked inductivity of 183 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2019-05-23 11:14:39,822 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:14:39,822 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 11:14:39,833 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:14:39,901 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:39,902 INFO L146 ILogger]: Trace formula consists of 335 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:14:39,905 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:14:39,982 INFO L146 ILogger]: Checked inductivity of 183 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2019-05-23 11:14:40,002 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:14:40,002 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 15 [2019-05-23 11:14:40,003 INFO L146 ILogger]: Interpolant automaton has 15 states [2019-05-23 11:14:40,003 INFO L146 ILogger]: Constructing interpolant automaton starting with 15 interpolants. [2019-05-23 11:14:40,003 INFO L146 ILogger]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2019-05-23 11:14:40,003 INFO L146 ILogger]: Start difference. First operand 201 states and 209 transitions. Second operand 15 states. [2019-05-23 11:14:40,277 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:40,277 INFO L146 ILogger]: Finished difference Result 355 states and 371 transitions. [2019-05-23 11:14:40,277 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-05-23 11:14:40,278 INFO L146 ILogger]: Start accepts. Automaton has 15 states. Word has length 195 [2019-05-23 11:14:40,278 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:40,279 INFO L146 ILogger]: With dead ends: 355 [2019-05-23 11:14:40,279 INFO L146 ILogger]: Without dead ends: 219 [2019-05-23 11:14:40,280 INFO L146 ILogger]: 0 DeclaredPredicates, 217 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=196, Invalid=404, Unknown=0, NotChecked=0, Total=600 [2019-05-23 11:14:40,280 INFO L146 ILogger]: Start minimizeSevpa. Operand 219 states. [2019-05-23 11:14:40,284 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 219 to 211. [2019-05-23 11:14:40,284 INFO L146 ILogger]: Start removeUnreachable. Operand 211 states. [2019-05-23 11:14:40,285 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 211 states to 211 states and 219 transitions. [2019-05-23 11:14:40,285 INFO L146 ILogger]: Start accepts. Automaton has 211 states and 219 transitions. Word has length 195 [2019-05-23 11:14:40,286 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:40,286 INFO L146 ILogger]: Abstraction has 211 states and 219 transitions. [2019-05-23 11:14:40,286 INFO L146 ILogger]: Interpolant automaton has 15 states. [2019-05-23 11:14:40,286 INFO L146 ILogger]: Start isEmpty. Operand 211 states and 219 transitions. [2019-05-23 11:14:40,287 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 206 [2019-05-23 11:14:40,287 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:40,287 INFO L146 ILogger]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:14:40,288 INFO L146 ILogger]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:40,288 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:40,288 INFO L146 ILogger]: Analyzing trace with hash -309172958, now seen corresponding path program 8 times [2019-05-23 11:14:40,288 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:40,288 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:40,289 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:40,289 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:14:40,289 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:40,312 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:40,509 INFO L146 ILogger]: Checked inductivity of 234 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2019-05-23 11:14:40,509 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:14:40,510 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 11:14:40,519 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:14:40,575 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:14:40,575 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:40,576 INFO L146 ILogger]: Trace formula consists of 349 conjuncts, 14 conjunts are in the unsatisfiable core [2019-05-23 11:14:40,579 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:14:40,630 INFO L146 ILogger]: Checked inductivity of 234 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2019-05-23 11:14:40,658 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:14:40,658 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2019-05-23 11:14:40,659 INFO L146 ILogger]: Interpolant automaton has 17 states [2019-05-23 11:14:40,659 INFO L146 ILogger]: Constructing interpolant automaton starting with 17 interpolants. [2019-05-23 11:14:40,659 INFO L146 ILogger]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2019-05-23 11:14:40,660 INFO L146 ILogger]: Start difference. First operand 211 states and 219 transitions. Second operand 17 states. [2019-05-23 11:14:41,047 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:41,047 INFO L146 ILogger]: Finished difference Result 365 states and 381 transitions. [2019-05-23 11:14:41,047 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-05-23 11:14:41,048 INFO L146 ILogger]: Start accepts. Automaton has 17 states. Word has length 205 [2019-05-23 11:14:41,048 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:41,049 INFO L146 ILogger]: With dead ends: 365 [2019-05-23 11:14:41,049 INFO L146 ILogger]: Without dead ends: 229 [2019-05-23 11:14:41,050 INFO L146 ILogger]: 0 DeclaredPredicates, 231 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=263, Invalid=549, Unknown=0, NotChecked=0, Total=812 [2019-05-23 11:14:41,050 INFO L146 ILogger]: Start minimizeSevpa. Operand 229 states. [2019-05-23 11:14:41,054 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 229 to 221. [2019-05-23 11:14:41,054 INFO L146 ILogger]: Start removeUnreachable. Operand 221 states. [2019-05-23 11:14:41,055 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 221 states to 221 states and 229 transitions. [2019-05-23 11:14:41,055 INFO L146 ILogger]: Start accepts. Automaton has 221 states and 229 transitions. Word has length 205 [2019-05-23 11:14:41,056 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:41,056 INFO L146 ILogger]: Abstraction has 221 states and 229 transitions. [2019-05-23 11:14:41,056 INFO L146 ILogger]: Interpolant automaton has 17 states. [2019-05-23 11:14:41,056 INFO L146 ILogger]: Start isEmpty. Operand 221 states and 229 transitions. [2019-05-23 11:14:41,057 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 216 [2019-05-23 11:14:41,057 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:41,057 INFO L146 ILogger]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:14:41,058 INFO L146 ILogger]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:41,058 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:41,058 INFO L146 ILogger]: Analyzing trace with hash -1311819588, now seen corresponding path program 9 times [2019-05-23 11:14:41,058 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:41,058 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:41,059 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:41,059 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:14:41,059 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:41,083 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:41,398 INFO L146 ILogger]: Checked inductivity of 295 backedges. 0 proven. 217 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2019-05-23 11:14:41,399 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:14:41,399 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 11:14:41,407 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:14:41,464 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-05-23 11:14:41,465 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:41,466 INFO L146 ILogger]: Trace formula consists of 283 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 11:14:41,470 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:14:42,001 INFO L146 ILogger]: Checked inductivity of 295 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 286 trivial. 0 not checked. [2019-05-23 11:14:42,020 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:14:42,020 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 7] total 22 [2019-05-23 11:14:42,021 INFO L146 ILogger]: Interpolant automaton has 22 states [2019-05-23 11:14:42,021 INFO L146 ILogger]: Constructing interpolant automaton starting with 22 interpolants. [2019-05-23 11:14:42,021 INFO L146 ILogger]: CoverageRelationStatistics Valid=94, Invalid=368, Unknown=0, NotChecked=0, Total=462 [2019-05-23 11:14:42,022 INFO L146 ILogger]: Start difference. First operand 221 states and 229 transitions. Second operand 22 states. [2019-05-23 11:14:43,030 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:43,030 INFO L146 ILogger]: Finished difference Result 387 states and 404 transitions. [2019-05-23 11:14:43,035 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2019-05-23 11:14:43,035 INFO L146 ILogger]: Start accepts. Automaton has 22 states. Word has length 215 [2019-05-23 11:14:43,035 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:43,036 INFO L146 ILogger]: With dead ends: 387 [2019-05-23 11:14:43,037 INFO L146 ILogger]: Without dead ends: 251 [2019-05-23 11:14:43,038 INFO L146 ILogger]: 0 DeclaredPredicates, 249 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=360, Invalid=1200, Unknown=0, NotChecked=0, Total=1560 [2019-05-23 11:14:43,038 INFO L146 ILogger]: Start minimizeSevpa. Operand 251 states. [2019-05-23 11:14:43,043 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 251 to 238. [2019-05-23 11:14:43,043 INFO L146 ILogger]: Start removeUnreachable. Operand 238 states. [2019-05-23 11:14:43,044 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 238 states to 238 states and 246 transitions. [2019-05-23 11:14:43,044 INFO L146 ILogger]: Start accepts. Automaton has 238 states and 246 transitions. Word has length 215 [2019-05-23 11:14:43,044 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:43,045 INFO L146 ILogger]: Abstraction has 238 states and 246 transitions. [2019-05-23 11:14:43,045 INFO L146 ILogger]: Interpolant automaton has 22 states. [2019-05-23 11:14:43,045 INFO L146 ILogger]: Start isEmpty. Operand 238 states and 246 transitions. [2019-05-23 11:14:43,046 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 233 [2019-05-23 11:14:43,046 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:43,047 INFO L146 ILogger]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:14:43,047 INFO L146 ILogger]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:43,047 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:43,048 INFO L146 ILogger]: Analyzing trace with hash -934509153, now seen corresponding path program 10 times [2019-05-23 11:14:43,048 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:43,048 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:43,049 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:43,049 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:14:43,049 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:43,076 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:43,332 INFO L146 ILogger]: Checked inductivity of 381 backedges. 0 proven. 288 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2019-05-23 11:14:43,332 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:14:43,332 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 11:14:43,341 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:14:44,760 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:14:44,760 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:44,763 INFO L146 ILogger]: Trace formula consists of 387 conjuncts, 18 conjunts are in the unsatisfiable core [2019-05-23 11:14:44,766 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:14:44,843 INFO L146 ILogger]: Checked inductivity of 381 backedges. 0 proven. 288 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2019-05-23 11:14:44,864 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:14:44,865 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2019-05-23 11:14:44,865 INFO L146 ILogger]: Interpolant automaton has 21 states [2019-05-23 11:14:44,865 INFO L146 ILogger]: Constructing interpolant automaton starting with 21 interpolants. [2019-05-23 11:14:44,866 INFO L146 ILogger]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2019-05-23 11:14:44,866 INFO L146 ILogger]: Start difference. First operand 238 states and 246 transitions. Second operand 21 states. [2019-05-23 11:14:45,178 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:14:45,178 INFO L146 ILogger]: Finished difference Result 399 states and 415 transitions. [2019-05-23 11:14:45,186 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2019-05-23 11:14:45,186 INFO L146 ILogger]: Start accepts. Automaton has 21 states. Word has length 232 [2019-05-23 11:14:45,186 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:14:45,188 INFO L146 ILogger]: With dead ends: 399 [2019-05-23 11:14:45,188 INFO L146 ILogger]: Without dead ends: 256 [2019-05-23 11:14:45,189 INFO L146 ILogger]: 0 DeclaredPredicates, 266 GetRequests, 231 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=427, Invalid=905, Unknown=0, NotChecked=0, Total=1332 [2019-05-23 11:14:45,189 INFO L146 ILogger]: Start minimizeSevpa. Operand 256 states. [2019-05-23 11:14:45,194 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 256 to 248. [2019-05-23 11:14:45,194 INFO L146 ILogger]: Start removeUnreachable. Operand 248 states. [2019-05-23 11:14:45,195 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 248 states to 248 states and 256 transitions. [2019-05-23 11:14:45,195 INFO L146 ILogger]: Start accepts. Automaton has 248 states and 256 transitions. Word has length 232 [2019-05-23 11:14:45,195 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:14:45,195 INFO L146 ILogger]: Abstraction has 248 states and 256 transitions. [2019-05-23 11:14:45,195 INFO L146 ILogger]: Interpolant automaton has 21 states. [2019-05-23 11:14:45,196 INFO L146 ILogger]: Start isEmpty. Operand 248 states and 256 transitions. [2019-05-23 11:14:45,197 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 243 [2019-05-23 11:14:45,197 INFO L146 ILogger]: Found error trace [2019-05-23 11:14:45,197 INFO L146 ILogger]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:14:45,197 INFO L146 ILogger]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:14:45,198 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:14:45,198 INFO L146 ILogger]: Analyzing trace with hash 1700938181, now seen corresponding path program 11 times [2019-05-23 11:14:45,198 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:14:45,198 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:14:45,199 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:45,199 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:14:45,199 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:14:45,224 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:14:46,314 INFO L146 ILogger]: Checked inductivity of 462 backedges. 0 proven. 369 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2019-05-23 11:14:46,314 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:14:46,314 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 11:14:46,322 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:15:09,260 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2019-05-23 11:15:09,260 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:09,274 INFO L146 ILogger]: Trace formula consists of 401 conjuncts, 8 conjunts are in the unsatisfiable core [2019-05-23 11:15:09,277 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:15:09,454 INFO L146 ILogger]: Checked inductivity of 462 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 438 trivial. 0 not checked. [2019-05-23 11:15:09,478 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:15:09,478 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 9] total 28 [2019-05-23 11:15:09,479 INFO L146 ILogger]: Interpolant automaton has 28 states [2019-05-23 11:15:09,479 INFO L146 ILogger]: Constructing interpolant automaton starting with 28 interpolants. [2019-05-23 11:15:09,480 INFO L146 ILogger]: CoverageRelationStatistics Valid=143, Invalid=613, Unknown=0, NotChecked=0, Total=756 [2019-05-23 11:15:09,480 INFO L146 ILogger]: Start difference. First operand 248 states and 256 transitions. Second operand 28 states. [2019-05-23 11:15:10,517 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:10,517 INFO L146 ILogger]: Finished difference Result 421 states and 438 transitions. [2019-05-23 11:15:10,518 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2019-05-23 11:15:10,518 INFO L146 ILogger]: Start accepts. Automaton has 28 states. Word has length 242 [2019-05-23 11:15:10,518 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:10,520 INFO L146 ILogger]: With dead ends: 421 [2019-05-23 11:15:10,520 INFO L146 ILogger]: Without dead ends: 278 [2019-05-23 11:15:10,522 INFO L146 ILogger]: 0 DeclaredPredicates, 286 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 473 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=575, Invalid=2077, Unknown=0, NotChecked=0, Total=2652 [2019-05-23 11:15:10,522 INFO L146 ILogger]: Start minimizeSevpa. Operand 278 states. [2019-05-23 11:15:10,526 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 278 to 265. [2019-05-23 11:15:10,526 INFO L146 ILogger]: Start removeUnreachable. Operand 265 states. [2019-05-23 11:15:10,527 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 265 states to 265 states and 273 transitions. [2019-05-23 11:15:10,527 INFO L146 ILogger]: Start accepts. Automaton has 265 states and 273 transitions. Word has length 242 [2019-05-23 11:15:10,527 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:10,527 INFO L146 ILogger]: Abstraction has 265 states and 273 transitions. [2019-05-23 11:15:10,528 INFO L146 ILogger]: Interpolant automaton has 28 states. [2019-05-23 11:15:10,528 INFO L146 ILogger]: Start isEmpty. Operand 265 states and 273 transitions. [2019-05-23 11:15:10,529 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 260 [2019-05-23 11:15:10,529 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:10,529 INFO L146 ILogger]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:15:10,530 INFO L146 ILogger]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:10,530 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:10,530 INFO L146 ILogger]: Analyzing trace with hash 386253745, now seen corresponding path program 12 times [2019-05-23 11:15:10,530 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:10,530 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:10,531 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:10,531 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:15:10,531 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:10,556 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:11,234 INFO L146 ILogger]: Checked inductivity of 575 backedges. 0 proven. 460 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2019-05-23 11:15:11,235 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:11,235 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:15:11,243 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:15:11,498 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2019-05-23 11:15:11,498 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:11,499 INFO L146 ILogger]: Trace formula consists of 311 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 11:15:11,501 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:15:11,622 INFO L146 ILogger]: Checked inductivity of 575 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 566 trivial. 0 not checked. [2019-05-23 11:15:11,641 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:15:11,642 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 7] total 28 [2019-05-23 11:15:11,642 INFO L146 ILogger]: Interpolant automaton has 28 states [2019-05-23 11:15:11,642 INFO L146 ILogger]: Constructing interpolant automaton starting with 28 interpolants. [2019-05-23 11:15:11,643 INFO L146 ILogger]: CoverageRelationStatistics Valid=157, Invalid=599, Unknown=0, NotChecked=0, Total=756 [2019-05-23 11:15:11,643 INFO L146 ILogger]: Start difference. First operand 265 states and 273 transitions. Second operand 28 states. [2019-05-23 11:15:12,699 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:12,700 INFO L146 ILogger]: Finished difference Result 445 states and 462 transitions. [2019-05-23 11:15:12,700 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2019-05-23 11:15:12,700 INFO L146 ILogger]: Start accepts. Automaton has 28 states. Word has length 259 [2019-05-23 11:15:12,701 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:12,702 INFO L146 ILogger]: With dead ends: 445 [2019-05-23 11:15:12,702 INFO L146 ILogger]: Without dead ends: 295 [2019-05-23 11:15:12,704 INFO L146 ILogger]: 0 DeclaredPredicates, 305 GetRequests, 255 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 463 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=645, Invalid=2007, Unknown=0, NotChecked=0, Total=2652 [2019-05-23 11:15:12,704 INFO L146 ILogger]: Start minimizeSevpa. Operand 295 states. [2019-05-23 11:15:12,709 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 295 to 282. [2019-05-23 11:15:12,709 INFO L146 ILogger]: Start removeUnreachable. Operand 282 states. [2019-05-23 11:15:12,710 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 282 states to 282 states and 290 transitions. [2019-05-23 11:15:12,710 INFO L146 ILogger]: Start accepts. Automaton has 282 states and 290 transitions. Word has length 259 [2019-05-23 11:15:12,711 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:12,711 INFO L146 ILogger]: Abstraction has 282 states and 290 transitions. [2019-05-23 11:15:12,711 INFO L146 ILogger]: Interpolant automaton has 28 states. [2019-05-23 11:15:12,711 INFO L146 ILogger]: Start isEmpty. Operand 282 states and 290 transitions. [2019-05-23 11:15:12,712 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 277 [2019-05-23 11:15:12,712 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:12,713 INFO L146 ILogger]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:15:12,713 INFO L146 ILogger]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:12,713 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:12,713 INFO L146 ILogger]: Analyzing trace with hash -1029724065, now seen corresponding path program 13 times [2019-05-23 11:15:12,713 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:12,714 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:12,714 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:12,714 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:15:12,715 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:12,742 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:13,318 INFO L146 ILogger]: Checked inductivity of 691 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2019-05-23 11:15:13,318 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:13,318 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:15:13,326 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:15:13,402 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:13,404 INFO L146 ILogger]: Trace formula consists of 449 conjuncts, 24 conjunts are in the unsatisfiable core [2019-05-23 11:15:13,408 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:15:13,533 INFO L146 ILogger]: Checked inductivity of 691 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2019-05-23 11:15:13,555 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:15:13,555 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 27 [2019-05-23 11:15:13,556 INFO L146 ILogger]: Interpolant automaton has 27 states [2019-05-23 11:15:13,556 INFO L146 ILogger]: Constructing interpolant automaton starting with 27 interpolants. [2019-05-23 11:15:13,556 INFO L146 ILogger]: CoverageRelationStatistics Valid=195, Invalid=507, Unknown=0, NotChecked=0, Total=702 [2019-05-23 11:15:13,557 INFO L146 ILogger]: Start difference. First operand 282 states and 290 transitions. Second operand 27 states. [2019-05-23 11:15:14,218 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:14,219 INFO L146 ILogger]: Finished difference Result 457 states and 473 transitions. [2019-05-23 11:15:14,225 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2019-05-23 11:15:14,225 INFO L146 ILogger]: Start accepts. Automaton has 27 states. Word has length 276 [2019-05-23 11:15:14,225 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:14,227 INFO L146 ILogger]: With dead ends: 457 [2019-05-23 11:15:14,227 INFO L146 ILogger]: Without dead ends: 300 [2019-05-23 11:15:14,228 INFO L146 ILogger]: 0 DeclaredPredicates, 322 GetRequests, 275 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 439 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=748, Invalid=1604, Unknown=0, NotChecked=0, Total=2352 [2019-05-23 11:15:14,228 INFO L146 ILogger]: Start minimizeSevpa. Operand 300 states. [2019-05-23 11:15:14,233 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 300 to 292. [2019-05-23 11:15:14,233 INFO L146 ILogger]: Start removeUnreachable. Operand 292 states. [2019-05-23 11:15:14,234 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 292 states to 292 states and 300 transitions. [2019-05-23 11:15:14,234 INFO L146 ILogger]: Start accepts. Automaton has 292 states and 300 transitions. Word has length 276 [2019-05-23 11:15:14,234 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:14,234 INFO L146 ILogger]: Abstraction has 292 states and 300 transitions. [2019-05-23 11:15:14,235 INFO L146 ILogger]: Interpolant automaton has 27 states. [2019-05-23 11:15:14,235 INFO L146 ILogger]: Start isEmpty. Operand 292 states and 300 transitions. [2019-05-23 11:15:14,236 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 287 [2019-05-23 11:15:14,236 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:14,236 INFO L146 ILogger]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:15:14,237 INFO L146 ILogger]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:14,237 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:14,237 INFO L146 ILogger]: Analyzing trace with hash -689421435, now seen corresponding path program 14 times [2019-05-23 11:15:14,237 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:14,237 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:14,238 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:14,238 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:15:14,238 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:14,263 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:14,765 INFO L146 ILogger]: Checked inductivity of 802 backedges. 0 proven. 672 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2019-05-23 11:15:14,765 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:14,765 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:15:14,775 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:15:14,851 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:15:14,852 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:14,853 INFO L146 ILogger]: Trace formula consists of 463 conjuncts, 26 conjunts are in the unsatisfiable core [2019-05-23 11:15:14,857 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:15:15,003 INFO L146 ILogger]: Checked inductivity of 802 backedges. 0 proven. 672 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2019-05-23 11:15:15,022 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:15:15,023 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 29 [2019-05-23 11:15:15,023 INFO L146 ILogger]: Interpolant automaton has 29 states [2019-05-23 11:15:15,024 INFO L146 ILogger]: Constructing interpolant automaton starting with 29 interpolants. [2019-05-23 11:15:15,024 INFO L146 ILogger]: CoverageRelationStatistics Valid=224, Invalid=588, Unknown=0, NotChecked=0, Total=812 [2019-05-23 11:15:15,024 INFO L146 ILogger]: Start difference. First operand 292 states and 300 transitions. Second operand 29 states. [2019-05-23 11:15:16,265 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:16,265 INFO L146 ILogger]: Finished difference Result 467 states and 483 transitions. [2019-05-23 11:15:16,274 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2019-05-23 11:15:16,274 INFO L146 ILogger]: Start accepts. Automaton has 29 states. Word has length 286 [2019-05-23 11:15:16,274 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:16,276 INFO L146 ILogger]: With dead ends: 467 [2019-05-23 11:15:16,276 INFO L146 ILogger]: Without dead ends: 310 [2019-05-23 11:15:16,277 INFO L146 ILogger]: 0 DeclaredPredicates, 336 GetRequests, 285 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 516 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=875, Invalid=1881, Unknown=0, NotChecked=0, Total=2756 [2019-05-23 11:15:16,278 INFO L146 ILogger]: Start minimizeSevpa. Operand 310 states. [2019-05-23 11:15:16,282 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 310 to 302. [2019-05-23 11:15:16,282 INFO L146 ILogger]: Start removeUnreachable. Operand 302 states. [2019-05-23 11:15:16,283 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 302 states to 302 states and 310 transitions. [2019-05-23 11:15:16,283 INFO L146 ILogger]: Start accepts. Automaton has 302 states and 310 transitions. Word has length 286 [2019-05-23 11:15:16,284 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:16,284 INFO L146 ILogger]: Abstraction has 302 states and 310 transitions. [2019-05-23 11:15:16,284 INFO L146 ILogger]: Interpolant automaton has 29 states. [2019-05-23 11:15:16,284 INFO L146 ILogger]: Start isEmpty. Operand 302 states and 310 transitions. [2019-05-23 11:15:16,286 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 297 [2019-05-23 11:15:16,286 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:16,286 INFO L146 ILogger]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:15:16,286 INFO L146 ILogger]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:16,286 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:16,287 INFO L146 ILogger]: Analyzing trace with hash -1017272533, now seen corresponding path program 15 times [2019-05-23 11:15:16,287 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:16,287 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:16,288 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:16,288 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:15:16,288 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:16,312 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:16,913 INFO L146 ILogger]: Checked inductivity of 923 backedges. 0 proven. 793 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2019-05-23 11:15:16,913 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:16,913 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:15:16,921 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:15:16,979 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-05-23 11:15:16,980 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:16,981 INFO L146 ILogger]: Trace formula consists of 283 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 11:15:16,985 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:15:18,575 INFO L146 ILogger]: Checked inductivity of 923 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 914 trivial. 0 not checked. [2019-05-23 11:15:18,594 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:15:18,595 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 7] total 34 [2019-05-23 11:15:18,595 INFO L146 ILogger]: Interpolant automaton has 34 states [2019-05-23 11:15:18,596 INFO L146 ILogger]: Constructing interpolant automaton starting with 34 interpolants. [2019-05-23 11:15:18,596 INFO L146 ILogger]: CoverageRelationStatistics Valid=238, Invalid=884, Unknown=0, NotChecked=0, Total=1122 [2019-05-23 11:15:18,596 INFO L146 ILogger]: Start difference. First operand 302 states and 310 transitions. Second operand 34 states. [2019-05-23 11:15:20,156 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:20,156 INFO L146 ILogger]: Finished difference Result 489 states and 506 transitions. [2019-05-23 11:15:20,156 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2019-05-23 11:15:20,157 INFO L146 ILogger]: Start accepts. Automaton has 34 states. Word has length 296 [2019-05-23 11:15:20,157 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:20,158 INFO L146 ILogger]: With dead ends: 489 [2019-05-23 11:15:20,159 INFO L146 ILogger]: Without dead ends: 332 [2019-05-23 11:15:20,160 INFO L146 ILogger]: 0 DeclaredPredicates, 354 GetRequests, 292 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 718 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1020, Invalid=3012, Unknown=0, NotChecked=0, Total=4032 [2019-05-23 11:15:20,161 INFO L146 ILogger]: Start minimizeSevpa. Operand 332 states. [2019-05-23 11:15:20,165 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 332 to 319. [2019-05-23 11:15:20,166 INFO L146 ILogger]: Start removeUnreachable. Operand 319 states. [2019-05-23 11:15:20,166 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 319 states to 319 states and 327 transitions. [2019-05-23 11:15:20,167 INFO L146 ILogger]: Start accepts. Automaton has 319 states and 327 transitions. Word has length 296 [2019-05-23 11:15:20,167 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:20,167 INFO L146 ILogger]: Abstraction has 319 states and 327 transitions. [2019-05-23 11:15:20,167 INFO L146 ILogger]: Interpolant automaton has 34 states. [2019-05-23 11:15:20,167 INFO L146 ILogger]: Start isEmpty. Operand 319 states and 327 transitions. [2019-05-23 11:15:20,169 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 314 [2019-05-23 11:15:20,169 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:20,169 INFO L146 ILogger]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:15:20,170 INFO L146 ILogger]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:20,170 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:20,170 INFO L146 ILogger]: Analyzing trace with hash 1734583339, now seen corresponding path program 16 times [2019-05-23 11:15:20,170 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:20,170 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:20,171 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:20,171 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:15:20,171 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:20,198 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:23,268 INFO L146 ILogger]: Checked inductivity of 1069 backedges. 0 proven. 924 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2019-05-23 11:15:23,268 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:23,269 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:15:23,277 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST