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_copy9_false-unreach-call_ground.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-7aa59a0 [2019-05-23 11:15:15,009 INFO L146 ILogger]: Resetting all preferences to default values... [2019-05-23 11:15:15,011 INFO L146 ILogger]: Resetting UltimateCore preferences to default values [2019-05-23 11:15:15,024 INFO L146 ILogger]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-05-23 11:15:15,025 INFO L146 ILogger]: Resetting Boogie Preprocessor preferences to default values [2019-05-23 11:15:15,026 INFO L146 ILogger]: Resetting Boogie Procedure Inliner preferences to default values [2019-05-23 11:15:15,028 INFO L146 ILogger]: Resetting Abstract Interpretation preferences to default values [2019-05-23 11:15:15,030 INFO L146 ILogger]: Resetting LassoRanker preferences to default values [2019-05-23 11:15:15,038 INFO L146 ILogger]: Resetting Reaching Definitions preferences to default values [2019-05-23 11:15:15,039 INFO L146 ILogger]: Resetting SyntaxChecker preferences to default values [2019-05-23 11:15:15,040 INFO L146 ILogger]: Büchi Program Product provides no preferences, ignoring... [2019-05-23 11:15:15,041 INFO L146 ILogger]: Resetting LTL2Aut preferences to default values [2019-05-23 11:15:15,042 INFO L146 ILogger]: Resetting PEA to Boogie preferences to default values [2019-05-23 11:15:15,043 INFO L146 ILogger]: Resetting BlockEncodingV2 preferences to default values [2019-05-23 11:15:15,044 INFO L146 ILogger]: Resetting ChcToBoogie preferences to default values [2019-05-23 11:15:15,045 INFO L146 ILogger]: Resetting AutomataScriptInterpreter preferences to default values [2019-05-23 11:15:15,046 INFO L146 ILogger]: Resetting BuchiAutomizer preferences to default values [2019-05-23 11:15:15,048 INFO L146 ILogger]: Resetting CACSL2BoogieTranslator preferences to default values [2019-05-23 11:15:15,051 INFO L146 ILogger]: Resetting CodeCheck preferences to default values [2019-05-23 11:15:15,052 INFO L146 ILogger]: Resetting InvariantSynthesis preferences to default values [2019-05-23 11:15:15,054 INFO L146 ILogger]: Resetting RCFGBuilder preferences to default values [2019-05-23 11:15:15,055 INFO L146 ILogger]: Resetting TraceAbstraction preferences to default values [2019-05-23 11:15:15,057 INFO L146 ILogger]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-05-23 11:15:15,058 INFO L146 ILogger]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-05-23 11:15:15,058 INFO L146 ILogger]: Resetting TreeAutomizer preferences to default values [2019-05-23 11:15:15,059 INFO L146 ILogger]: Resetting IcfgToChc preferences to default values [2019-05-23 11:15:15,060 INFO L146 ILogger]: Resetting IcfgTransformer preferences to default values [2019-05-23 11:15:15,061 INFO L146 ILogger]: ReqToTest provides no preferences, ignoring... [2019-05-23 11:15:15,061 INFO L146 ILogger]: Resetting Boogie Printer preferences to default values [2019-05-23 11:15:15,062 INFO L146 ILogger]: Resetting ChcSmtPrinter preferences to default values [2019-05-23 11:15:15,063 INFO L146 ILogger]: Resetting ReqPrinter preferences to default values [2019-05-23 11:15:15,063 INFO L146 ILogger]: Resetting Witness Printer preferences to default values [2019-05-23 11:15:15,065 INFO L146 ILogger]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-05-23 11:15:15,065 INFO L146 ILogger]: Resetting CDTParser preferences to default values [2019-05-23 11:15:15,066 INFO L146 ILogger]: AutomataScriptParser provides no preferences, ignoring... [2019-05-23 11:15:15,066 INFO L146 ILogger]: ReqParser provides no preferences, ignoring... [2019-05-23 11:15:15,066 INFO L146 ILogger]: Resetting SmtParser preferences to default values [2019-05-23 11:15:15,067 INFO L146 ILogger]: Resetting Witness Parser preferences to default values [2019-05-23 11:15:15,068 INFO L146 ILogger]: Finished resetting all preferences to default values... [2019-05-23 11:15:15,068 INFO L146 ILogger]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-05-23 11:15:15,086 INFO L146 ILogger]: Loading preferences was successful [2019-05-23 11:15:15,087 INFO L146 ILogger]: Preferences different from defaults after loading the file: [2019-05-23 11:15:15,089 INFO L146 ILogger]: Preferences of BlockEncodingV2 differ from their defaults: [2019-05-23 11:15:15,089 INFO L146 ILogger]: * Create parallel compositions if possible=false [2019-05-23 11:15:15,089 INFO L146 ILogger]: * Use SBE=true [2019-05-23 11:15:15,090 INFO L146 ILogger]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-05-23 11:15:15,090 INFO L146 ILogger]: * sizeof long=4 [2019-05-23 11:15:15,091 INFO L146 ILogger]: * Overapproximate operations on floating types=true [2019-05-23 11:15:15,091 INFO L146 ILogger]: * sizeof POINTER=4 [2019-05-23 11:15:15,091 INFO L146 ILogger]: * Check division by zero=IGNORE [2019-05-23 11:15:15,091 INFO L146 ILogger]: * Pointer to allocated memory at dereference=IGNORE [2019-05-23 11:15:15,091 INFO L146 ILogger]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-05-23 11:15:15,092 INFO L146 ILogger]: * Check array bounds for arrays that are off heap=IGNORE [2019-05-23 11:15:15,092 INFO L146 ILogger]: * sizeof long double=12 [2019-05-23 11:15:15,092 INFO L146 ILogger]: * Check if freed pointer was valid=false [2019-05-23 11:15:15,092 INFO L146 ILogger]: * Use constant arrays=true [2019-05-23 11:15:15,092 INFO L146 ILogger]: * Pointer base address is valid at dereference=IGNORE [2019-05-23 11:15:15,094 INFO L146 ILogger]: Preferences of RCFGBuilder differ from their defaults: [2019-05-23 11:15:15,094 INFO L146 ILogger]: * Size of a code block=SequenceOfStatements [2019-05-23 11:15:15,094 INFO L146 ILogger]: * To the following directory=./dump/ [2019-05-23 11:15:15,094 INFO L146 ILogger]: * SMT solver=External_DefaultMode [2019-05-23 11:15:15,095 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-05-23 11:15:15,095 INFO L146 ILogger]: Preferences of TraceAbstraction differ from their defaults: [2019-05-23 11:15:15,095 INFO L146 ILogger]: * Compute Interpolants along a Counterexample=FPandBP [2019-05-23 11:15:15,095 INFO L146 ILogger]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-05-23 11:15:15,095 INFO L146 ILogger]: * Trace refinement strategy=CAMEL [2019-05-23 11:15:15,096 INFO L146 ILogger]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-05-23 11:15:15,096 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-05-23 11:15:15,096 INFO L146 ILogger]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Command for external solver -> z3 SMTLIB2_COMPLIANT=true -memory:4096 -smt2 -in -t:12000 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement [2019-05-23 11:15:15,152 INFO L146 ILogger]: Repository-Root is: /tmp [2019-05-23 11:15:15,170 INFO L146 ILogger]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-05-23 11:15:15,176 INFO L146 ILogger]: [Toolchain 1]: Toolchain selected. [2019-05-23 11:15:15,178 INFO L146 ILogger]: Initializing CDTParser... [2019-05-23 11:15:15,179 INFO L146 ILogger]: CDTParser initialized [2019-05-23 11:15:15,180 INFO L146 ILogger]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/array-examples/standard_copy9_false-unreach-call_ground.i [2019-05-23 11:15:15,253 INFO L146 ILogger]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e9dae153/4e7a7d864f0842229e6e50edbc12ae04/FLAG9adcd48aa [2019-05-23 11:15:15,691 INFO L146 ILogger]: Found 1 translation units. [2019-05-23 11:15:15,693 INFO L146 ILogger]: Scanning /storage/repos/svcomp/c/array-examples/standard_copy9_false-unreach-call_ground.i [2019-05-23 11:15:15,705 INFO L146 ILogger]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e9dae153/4e7a7d864f0842229e6e50edbc12ae04/FLAG9adcd48aa [2019-05-23 11:15:16,053 INFO L146 ILogger]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e9dae153/4e7a7d864f0842229e6e50edbc12ae04 [2019-05-23 11:15:16,063 INFO L146 ILogger]: ####################### [Toolchain 1] ####################### [2019-05-23 11:15:16,065 INFO L146 ILogger]: Walking toolchain with 5 elements. [2019-05-23 11:15:16,070 INFO L146 ILogger]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-05-23 11:15:16,070 INFO L146 ILogger]: Initializing CACSL2BoogieTranslator... [2019-05-23 11:15:16,074 INFO L146 ILogger]: CACSL2BoogieTranslator initialized [2019-05-23 11:15:16,075 INFO L146 ILogger]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:15:16" (1/1) ... [2019-05-23 11:15:16,078 INFO L146 ILogger]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27199401 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:15:16, skipping insertion in model container [2019-05-23 11:15:16,078 INFO L146 ILogger]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:15:16" (1/1) ... [2019-05-23 11:15:16,085 INFO L146 ILogger]: Starting translation in SV-COMP mode [2019-05-23 11:15:16,112 INFO L146 ILogger]: Built tables and reachable declarations [2019-05-23 11:15:16,308 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:15:16,317 INFO L146 ILogger]: Completed pre-run [2019-05-23 11:15:16,365 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:15:16,387 INFO L146 ILogger]: Completed translation [2019-05-23 11:15:16,387 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:15:16 WrapperNode [2019-05-23 11:15:16,387 INFO L146 ILogger]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-05-23 11:15:16,388 INFO L146 ILogger]: ------------------------Boogie Procedure Inliner---------------------------- [2019-05-23 11:15:16,388 INFO L146 ILogger]: Initializing Boogie Procedure Inliner... [2019-05-23 11:15:16,388 INFO L146 ILogger]: Boogie Procedure Inliner initialized [2019-05-23 11:15:16,395 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:15:16" (1/1) ... [2019-05-23 11:15:16,406 INFO L146 ILogger]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:15:16" (1/1) ... [2019-05-23 11:15:16,436 INFO L146 ILogger]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-05-23 11:15:16,436 INFO L146 ILogger]: ------------------------Boogie Preprocessor---------------------------- [2019-05-23 11:15:16,437 INFO L146 ILogger]: Initializing Boogie Preprocessor... [2019-05-23 11:15:16,437 INFO L146 ILogger]: Boogie Preprocessor initialized [2019-05-23 11:15:16,538 INFO L146 ILogger]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:15:16" (1/1) ... [2019-05-23 11:15:16,538 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:15:16" (1/1) ... [2019-05-23 11:15:16,546 INFO L146 ILogger]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:15:16" (1/1) ... [2019-05-23 11:15:16,547 INFO L146 ILogger]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:15:16" (1/1) ... [2019-05-23 11:15:16,558 INFO L146 ILogger]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:15:16" (1/1) ... [2019-05-23 11:15:16,565 INFO L146 ILogger]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:15:16" (1/1) ... [2019-05-23 11:15:16,567 INFO L146 ILogger]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:15:16" (1/1) ... [2019-05-23 11:15:16,571 INFO L146 ILogger]: ------------------------ END Boogie Preprocessor---------------------------- [2019-05-23 11:15:16,571 INFO L146 ILogger]: ------------------------RCFGBuilder---------------------------- [2019-05-23 11:15:16,571 INFO L146 ILogger]: Initializing RCFGBuilder... [2019-05-23 11:15:16,572 INFO L146 ILogger]: RCFGBuilder initialized [2019-05-23 11:15:16,572 INFO L146 ILogger]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:15:16" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4096 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4096 -smt2 -in -t:12000 [2019-05-23 11:15:16,623 INFO L146 ILogger]: Found specification of procedure write~int [2019-05-23 11:15:16,623 INFO L146 ILogger]: Found specification of procedure ULTIMATE.start [2019-05-23 11:15:16,623 INFO L146 ILogger]: Found implementation of procedure ULTIMATE.start [2019-05-23 11:15:16,624 INFO L146 ILogger]: Found specification of procedure read~int [2019-05-23 11:15:16,624 INFO L146 ILogger]: Found specification of procedure #Ultimate.allocOnStack [2019-05-23 11:15:16,624 INFO L146 ILogger]: Found specification of procedure ULTIMATE.dealloc [2019-05-23 11:15:17,546 INFO L146 ILogger]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-05-23 11:15:17,547 INFO L146 ILogger]: Removed 17 assume(true) statements. [2019-05-23 11:15:17,548 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:15:17 BoogieIcfgContainer [2019-05-23 11:15:17,548 INFO L146 ILogger]: ------------------------ END RCFGBuilder---------------------------- [2019-05-23 11:15:17,549 INFO L146 ILogger]: ------------------------TraceAbstraction---------------------------- [2019-05-23 11:15:17,549 INFO L146 ILogger]: Initializing TraceAbstraction... [2019-05-23 11:15:17,552 INFO L146 ILogger]: TraceAbstraction initialized [2019-05-23 11:15:17,552 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.05 11:15:16" (1/3) ... [2019-05-23 11:15:17,553 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c312440 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:15:17, skipping insertion in model container [2019-05-23 11:15:17,553 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:15:16" (2/3) ... [2019-05-23 11:15:17,554 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c312440 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:15:17, skipping insertion in model container [2019-05-23 11:15:17,554 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:15:17" (3/3) ... [2019-05-23 11:15:17,556 INFO L146 ILogger]: Analyzing ICFG standard_copy9_false-unreach-call_ground.i [2019-05-23 11:15:17,563 INFO L146 ILogger]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-05-23 11:15:17,570 INFO L146 ILogger]: Appying trace abstraction to program that has 1 error locations. [2019-05-23 11:15:17,586 INFO L146 ILogger]: Starting to check reachability of 1 error locations. [2019-05-23 11:15:17,618 INFO L146 ILogger]: Using default assertion order modulation [2019-05-23 11:15:17,619 INFO L146 ILogger]: Interprodecural is true [2019-05-23 11:15:17,619 INFO L146 ILogger]: Hoare is true [2019-05-23 11:15:17,619 INFO L146 ILogger]: Compute interpolants for FPandBP [2019-05-23 11:15:17,620 INFO L146 ILogger]: Backedges is STRAIGHT_LINE [2019-05-23 11:15:17,620 INFO L146 ILogger]: Determinization is PREDICATE_ABSTRACTION [2019-05-23 11:15:17,620 INFO L146 ILogger]: Difference is false [2019-05-23 11:15:17,621 INFO L146 ILogger]: Minimize is MINIMIZE_SEVPA [2019-05-23 11:15:17,621 INFO L146 ILogger]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-05-23 11:15:17,638 INFO L146 ILogger]: Start isEmpty. Operand 139 states. [2019-05-23 11:15:17,647 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 47 [2019-05-23 11:15:17,648 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:17,649 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] [2019-05-23 11:15:17,651 INFO L146 ILogger]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:17,655 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:17,656 INFO L146 ILogger]: Analyzing trace with hash -432840951, now seen corresponding path program 1 times [2019-05-23 11:15:17,657 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:17,657 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:17,699 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:17,699 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:15:17,700 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:17,758 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:17,826 INFO L146 ILogger]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:15:17,829 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:15:17,830 INFO L146 ILogger]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-05-23 11:15:17,834 INFO L146 ILogger]: Interpolant automaton has 2 states [2019-05-23 11:15:17,849 INFO L146 ILogger]: Constructing interpolant automaton starting with 2 interpolants. [2019-05-23 11:15:17,850 INFO L146 ILogger]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-05-23 11:15:17,853 INFO L146 ILogger]: Start difference. First operand 139 states. Second operand 2 states. [2019-05-23 11:15:17,891 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:17,891 INFO L146 ILogger]: Finished difference Result 252 states and 294 transitions. [2019-05-23 11:15:17,891 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-05-23 11:15:17,892 INFO L146 ILogger]: Start accepts. Automaton has 2 states. Word has length 46 [2019-05-23 11:15:17,893 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:17,905 INFO L146 ILogger]: With dead ends: 252 [2019-05-23 11:15:17,905 INFO L146 ILogger]: Without dead ends: 115 [2019-05-23 11:15:17,909 INFO L146 ILogger]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-05-23 11:15:17,925 INFO L146 ILogger]: Start minimizeSevpa. Operand 115 states. [2019-05-23 11:15:17,948 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 115 to 115. [2019-05-23 11:15:17,949 INFO L146 ILogger]: Start removeUnreachable. Operand 115 states. [2019-05-23 11:15:17,951 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 115 states to 115 states and 125 transitions. [2019-05-23 11:15:17,953 INFO L146 ILogger]: Start accepts. Automaton has 115 states and 125 transitions. Word has length 46 [2019-05-23 11:15:17,953 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:17,954 INFO L146 ILogger]: Abstraction has 115 states and 125 transitions. [2019-05-23 11:15:17,954 INFO L146 ILogger]: Interpolant automaton has 2 states. [2019-05-23 11:15:17,954 INFO L146 ILogger]: Start isEmpty. Operand 115 states and 125 transitions. [2019-05-23 11:15:17,956 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 47 [2019-05-23 11:15:17,956 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:17,957 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] [2019-05-23 11:15:17,957 INFO L146 ILogger]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:17,957 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:17,958 INFO L146 ILogger]: Analyzing trace with hash 1272167189, now seen corresponding path program 1 times [2019-05-23 11:15:17,958 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:17,958 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:17,959 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:17,959 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:15:17,960 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:17,996 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:18,062 INFO L146 ILogger]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:15:18,062 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:15:18,063 INFO L146 ILogger]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-05-23 11:15:18,064 INFO L146 ILogger]: Interpolant automaton has 3 states [2019-05-23 11:15:18,065 INFO L146 ILogger]: Constructing interpolant automaton starting with 3 interpolants. [2019-05-23 11:15:18,065 INFO L146 ILogger]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-05-23 11:15:18,066 INFO L146 ILogger]: Start difference. First operand 115 states and 125 transitions. Second operand 3 states. [2019-05-23 11:15:18,161 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:18,161 INFO L146 ILogger]: Finished difference Result 213 states and 233 transitions. [2019-05-23 11:15:18,161 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-05-23 11:15:18,162 INFO L146 ILogger]: Start accepts. Automaton has 3 states. Word has length 46 [2019-05-23 11:15:18,162 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:18,164 INFO L146 ILogger]: With dead ends: 213 [2019-05-23 11:15:18,164 INFO L146 ILogger]: Without dead ends: 124 [2019-05-23 11:15:18,165 INFO L146 ILogger]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-05-23 11:15:18,166 INFO L146 ILogger]: Start minimizeSevpa. Operand 124 states. [2019-05-23 11:15:18,179 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 124 to 116. [2019-05-23 11:15:18,179 INFO L146 ILogger]: Start removeUnreachable. Operand 116 states. [2019-05-23 11:15:18,180 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 116 states to 116 states and 126 transitions. [2019-05-23 11:15:18,181 INFO L146 ILogger]: Start accepts. Automaton has 116 states and 126 transitions. Word has length 46 [2019-05-23 11:15:18,181 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:18,181 INFO L146 ILogger]: Abstraction has 116 states and 126 transitions. [2019-05-23 11:15:18,181 INFO L146 ILogger]: Interpolant automaton has 3 states. [2019-05-23 11:15:18,182 INFO L146 ILogger]: Start isEmpty. Operand 116 states and 126 transitions. [2019-05-23 11:15:18,184 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 57 [2019-05-23 11:15:18,185 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:18,185 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, 1, 1, 1, 1, 1, 1] [2019-05-23 11:15:18,185 INFO L146 ILogger]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:18,186 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:18,186 INFO L146 ILogger]: Analyzing trace with hash -1204928453, now seen corresponding path program 1 times [2019-05-23 11:15:18,186 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:18,186 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:18,187 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:18,187 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:15:18,187 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:18,218 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:18,359 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 11:15:18,359 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:18,360 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:15:18,373 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:15:18,434 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:18,436 INFO L146 ILogger]: Trace formula consists of 151 conjuncts, 2 conjunts are in the unsatisfiable core [2019-05-23 11:15:18,444 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:15:18,588 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 11:15:18,630 INFO L146 ILogger]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-05-23 11:15:18,631 INFO L146 ILogger]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2019-05-23 11:15:18,632 INFO L146 ILogger]: Interpolant automaton has 6 states [2019-05-23 11:15:18,632 INFO L146 ILogger]: Constructing interpolant automaton starting with 6 interpolants. [2019-05-23 11:15:18,632 INFO L146 ILogger]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-05-23 11:15:18,638 INFO L146 ILogger]: Start difference. First operand 116 states and 126 transitions. Second operand 6 states. [2019-05-23 11:15:19,709 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:19,709 INFO L146 ILogger]: Finished difference Result 277 states and 306 transitions. [2019-05-23 11:15:19,711 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-05-23 11:15:19,711 INFO L146 ILogger]: Start accepts. Automaton has 6 states. Word has length 56 [2019-05-23 11:15:19,711 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:19,713 INFO L146 ILogger]: With dead ends: 277 [2019-05-23 11:15:19,713 INFO L146 ILogger]: Without dead ends: 188 [2019-05-23 11:15:19,714 INFO L146 ILogger]: 0 DeclaredPredicates, 62 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2019-05-23 11:15:19,715 INFO L146 ILogger]: Start minimizeSevpa. Operand 188 states. [2019-05-23 11:15:19,724 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 188 to 135. [2019-05-23 11:15:19,724 INFO L146 ILogger]: Start removeUnreachable. Operand 135 states. [2019-05-23 11:15:19,728 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 135 states to 135 states and 145 transitions. [2019-05-23 11:15:19,728 INFO L146 ILogger]: Start accepts. Automaton has 135 states and 145 transitions. Word has length 56 [2019-05-23 11:15:19,728 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:19,728 INFO L146 ILogger]: Abstraction has 135 states and 145 transitions. [2019-05-23 11:15:19,728 INFO L146 ILogger]: Interpolant automaton has 6 states. [2019-05-23 11:15:19,730 INFO L146 ILogger]: Start isEmpty. Operand 135 states and 145 transitions. [2019-05-23 11:15:19,737 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 130 [2019-05-23 11:15:19,737 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:19,738 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:15:19,738 INFO L146 ILogger]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:19,738 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:19,738 INFO L146 ILogger]: Analyzing trace with hash 1714434958, now seen corresponding path program 1 times [2019-05-23 11:15:19,739 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:19,739 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:19,740 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:19,740 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:15:19,740 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:19,797 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:19,932 INFO L146 ILogger]: Checked inductivity of 21 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-05-23 11:15:19,932 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:19,933 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:15:19,953 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:15:20,013 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:20,015 INFO L146 ILogger]: Trace formula consists of 255 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 11:15:20,022 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:15:20,182 INFO L146 ILogger]: Checked inductivity of 21 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-05-23 11:15:20,205 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:15:20,206 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7] total 10 [2019-05-23 11:15:20,207 INFO L146 ILogger]: Interpolant automaton has 10 states [2019-05-23 11:15:20,207 INFO L146 ILogger]: Constructing interpolant automaton starting with 10 interpolants. [2019-05-23 11:15:20,207 INFO L146 ILogger]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2019-05-23 11:15:20,208 INFO L146 ILogger]: Start difference. First operand 135 states and 145 transitions. Second operand 10 states. [2019-05-23 11:15:21,205 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:21,206 INFO L146 ILogger]: Finished difference Result 303 states and 324 transitions. [2019-05-23 11:15:21,209 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-05-23 11:15:21,209 INFO L146 ILogger]: Start accepts. Automaton has 10 states. Word has length 129 [2019-05-23 11:15:21,210 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:21,211 INFO L146 ILogger]: With dead ends: 303 [2019-05-23 11:15:21,211 INFO L146 ILogger]: Without dead ends: 205 [2019-05-23 11:15:21,212 INFO L146 ILogger]: 0 DeclaredPredicates, 139 GetRequests, 125 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 11:15:21,213 INFO L146 ILogger]: Start minimizeSevpa. Operand 205 states. [2019-05-23 11:15:21,223 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 205 to 152. [2019-05-23 11:15:21,223 INFO L146 ILogger]: Start removeUnreachable. Operand 152 states. [2019-05-23 11:15:21,224 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 152 states to 152 states and 162 transitions. [2019-05-23 11:15:21,224 INFO L146 ILogger]: Start accepts. Automaton has 152 states and 162 transitions. Word has length 129 [2019-05-23 11:15:21,224 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:21,225 INFO L146 ILogger]: Abstraction has 152 states and 162 transitions. [2019-05-23 11:15:21,225 INFO L146 ILogger]: Interpolant automaton has 10 states. [2019-05-23 11:15:21,225 INFO L146 ILogger]: Start isEmpty. Operand 152 states and 162 transitions. [2019-05-23 11:15:21,227 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 147 [2019-05-23 11:15:21,227 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:21,228 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:15:21,228 INFO L146 ILogger]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:21,228 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:21,228 INFO L146 ILogger]: Analyzing trace with hash 2036679683, now seen corresponding path program 2 times [2019-05-23 11:15:21,229 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:21,229 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:21,230 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:21,230 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:15:21,230 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:21,280 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:21,472 INFO L146 ILogger]: Checked inductivity of 50 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2019-05-23 11:15:21,472 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:21,472 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:15:21,490 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:15:21,546 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:15:21,546 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:21,548 INFO L146 ILogger]: Trace formula consists of 279 conjuncts, 8 conjunts are in the unsatisfiable core [2019-05-23 11:15:21,555 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:15:21,666 INFO L146 ILogger]: Checked inductivity of 50 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2019-05-23 11:15:21,686 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:15:21,687 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9] total 12 [2019-05-23 11:15:21,687 INFO L146 ILogger]: Interpolant automaton has 12 states [2019-05-23 11:15:21,687 INFO L146 ILogger]: Constructing interpolant automaton starting with 12 interpolants. [2019-05-23 11:15:21,688 INFO L146 ILogger]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2019-05-23 11:15:21,688 INFO L146 ILogger]: Start difference. First operand 152 states and 162 transitions. Second operand 12 states. [2019-05-23 11:15:22,443 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:22,443 INFO L146 ILogger]: Finished difference Result 322 states and 343 transitions. [2019-05-23 11:15:22,444 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-05-23 11:15:22,444 INFO L146 ILogger]: Start accepts. Automaton has 12 states. Word has length 146 [2019-05-23 11:15:22,444 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:22,445 INFO L146 ILogger]: With dead ends: 322 [2019-05-23 11:15:22,445 INFO L146 ILogger]: Without dead ends: 217 [2019-05-23 11:15:22,447 INFO L146 ILogger]: 0 DeclaredPredicates, 158 GetRequests, 140 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 11:15:22,447 INFO L146 ILogger]: Start minimizeSevpa. Operand 217 states. [2019-05-23 11:15:22,458 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 217 to 169. [2019-05-23 11:15:22,458 INFO L146 ILogger]: Start removeUnreachable. Operand 169 states. [2019-05-23 11:15:22,459 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 169 states to 169 states and 179 transitions. [2019-05-23 11:15:22,459 INFO L146 ILogger]: Start accepts. Automaton has 169 states and 179 transitions. Word has length 146 [2019-05-23 11:15:22,460 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:22,460 INFO L146 ILogger]: Abstraction has 169 states and 179 transitions. [2019-05-23 11:15:22,460 INFO L146 ILogger]: Interpolant automaton has 12 states. [2019-05-23 11:15:22,460 INFO L146 ILogger]: Start isEmpty. Operand 169 states and 179 transitions. [2019-05-23 11:15:22,463 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 164 [2019-05-23 11:15:22,464 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:22,464 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:15:22,464 INFO L146 ILogger]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:22,465 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:22,465 INFO L146 ILogger]: Analyzing trace with hash -1845662007, now seen corresponding path program 3 times [2019-05-23 11:15:22,465 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:22,465 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:22,466 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:22,466 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:15:22,466 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:22,490 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:22,780 INFO L146 ILogger]: Checked inductivity of 89 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2019-05-23 11:15:22,781 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:22,781 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:15:22,800 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:15:22,873 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-05-23 11:15:22,873 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:22,875 INFO L146 ILogger]: Trace formula consists of 241 conjuncts, 4 conjunts are in the unsatisfiable core [2019-05-23 11:15:22,886 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:15:22,948 INFO L146 ILogger]: Checked inductivity of 89 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2019-05-23 11:15:22,967 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:15:22,968 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2019-05-23 11:15:22,968 INFO L146 ILogger]: Interpolant automaton has 7 states [2019-05-23 11:15:22,968 INFO L146 ILogger]: Constructing interpolant automaton starting with 7 interpolants. [2019-05-23 11:15:22,969 INFO L146 ILogger]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-05-23 11:15:22,969 INFO L146 ILogger]: Start difference. First operand 169 states and 179 transitions. Second operand 7 states. [2019-05-23 11:15:23,295 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:23,295 INFO L146 ILogger]: Finished difference Result 288 states and 306 transitions. [2019-05-23 11:15:23,296 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-05-23 11:15:23,296 INFO L146 ILogger]: Start accepts. Automaton has 7 states. Word has length 163 [2019-05-23 11:15:23,297 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:23,298 INFO L146 ILogger]: With dead ends: 288 [2019-05-23 11:15:23,299 INFO L146 ILogger]: Without dead ends: 218 [2019-05-23 11:15:23,299 INFO L146 ILogger]: 0 DeclaredPredicates, 171 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2019-05-23 11:15:23,300 INFO L146 ILogger]: Start minimizeSevpa. Operand 218 states. [2019-05-23 11:15:23,307 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 218 to 183. [2019-05-23 11:15:23,307 INFO L146 ILogger]: Start removeUnreachable. Operand 183 states. [2019-05-23 11:15:23,308 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 183 states to 183 states and 193 transitions. [2019-05-23 11:15:23,308 INFO L146 ILogger]: Start accepts. Automaton has 183 states and 193 transitions. Word has length 163 [2019-05-23 11:15:23,308 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:23,309 INFO L146 ILogger]: Abstraction has 183 states and 193 transitions. [2019-05-23 11:15:23,309 INFO L146 ILogger]: Interpolant automaton has 7 states. [2019-05-23 11:15:23,309 INFO L146 ILogger]: Start isEmpty. Operand 183 states and 193 transitions. [2019-05-23 11:15:23,313 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 178 [2019-05-23 11:15:23,313 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:23,313 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:15:23,314 INFO L146 ILogger]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:23,314 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:23,314 INFO L146 ILogger]: Analyzing trace with hash 1627171049, now seen corresponding path program 4 times [2019-05-23 11:15:23,314 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:23,314 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:23,315 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:23,315 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:15:23,315 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:23,340 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:23,499 INFO L146 ILogger]: Checked inductivity of 105 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2019-05-23 11:15:23,500 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:23,500 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:15:23,511 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:15:23,912 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:15:23,912 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:23,914 INFO L146 ILogger]: Trace formula consists of 323 conjuncts, 10 conjunts are in the unsatisfiable core [2019-05-23 11:15:23,918 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:15:24,056 INFO L146 ILogger]: Checked inductivity of 105 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-05-23 11:15:24,076 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:15:24,076 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 11] total 14 [2019-05-23 11:15:24,077 INFO L146 ILogger]: Interpolant automaton has 14 states [2019-05-23 11:15:24,077 INFO L146 ILogger]: Constructing interpolant automaton starting with 14 interpolants. [2019-05-23 11:15:24,077 INFO L146 ILogger]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2019-05-23 11:15:24,079 INFO L146 ILogger]: Start difference. First operand 183 states and 193 transitions. Second operand 14 states. [2019-05-23 11:15:24,942 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:24,942 INFO L146 ILogger]: Finished difference Result 359 states and 380 transitions. [2019-05-23 11:15:24,942 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-05-23 11:15:24,943 INFO L146 ILogger]: Start accepts. Automaton has 14 states. Word has length 177 [2019-05-23 11:15:24,943 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:24,944 INFO L146 ILogger]: With dead ends: 359 [2019-05-23 11:15:24,944 INFO L146 ILogger]: Without dead ends: 233 [2019-05-23 11:15:24,945 INFO L146 ILogger]: 0 DeclaredPredicates, 191 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=140, Invalid=412, Unknown=0, NotChecked=0, Total=552 [2019-05-23 11:15:24,946 INFO L146 ILogger]: Start minimizeSevpa. Operand 233 states. [2019-05-23 11:15:24,951 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 233 to 200. [2019-05-23 11:15:24,951 INFO L146 ILogger]: Start removeUnreachable. Operand 200 states. [2019-05-23 11:15:24,952 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 200 states to 200 states and 210 transitions. [2019-05-23 11:15:24,952 INFO L146 ILogger]: Start accepts. Automaton has 200 states and 210 transitions. Word has length 177 [2019-05-23 11:15:24,952 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:24,953 INFO L146 ILogger]: Abstraction has 200 states and 210 transitions. [2019-05-23 11:15:24,953 INFO L146 ILogger]: Interpolant automaton has 14 states. [2019-05-23 11:15:24,953 INFO L146 ILogger]: Start isEmpty. Operand 200 states and 210 transitions. [2019-05-23 11:15:24,955 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 195 [2019-05-23 11:15:24,955 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:24,955 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:15:24,955 INFO L146 ILogger]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:24,956 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:24,956 INFO L146 ILogger]: Analyzing trace with hash 879343073, now seen corresponding path program 5 times [2019-05-23 11:15:24,956 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:24,956 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:24,957 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:24,957 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:15:24,957 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:24,985 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:25,086 INFO L146 ILogger]: Checked inductivity of 154 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2019-05-23 11:15:25,086 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:25,086 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:15:25,095 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:15:37,245 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2019-05-23 11:15:37,245 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:37,255 INFO L146 ILogger]: Trace formula consists of 347 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 11:15:37,258 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:15:37,316 INFO L146 ILogger]: Checked inductivity of 154 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2019-05-23 11:15:37,338 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:15:37,338 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7] total 9 [2019-05-23 11:15:37,339 INFO L146 ILogger]: Interpolant automaton has 9 states [2019-05-23 11:15:37,339 INFO L146 ILogger]: Constructing interpolant automaton starting with 9 interpolants. [2019-05-23 11:15:37,339 INFO L146 ILogger]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:15:37,339 INFO L146 ILogger]: Start difference. First operand 200 states and 210 transitions. Second operand 9 states. [2019-05-23 11:15:37,827 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:37,828 INFO L146 ILogger]: Finished difference Result 298 states and 314 transitions. [2019-05-23 11:15:37,828 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-05-23 11:15:37,828 INFO L146 ILogger]: Start accepts. Automaton has 9 states. Word has length 194 [2019-05-23 11:15:37,829 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:37,830 INFO L146 ILogger]: With dead ends: 298 [2019-05-23 11:15:37,830 INFO L146 ILogger]: Without dead ends: 239 [2019-05-23 11:15:37,831 INFO L146 ILogger]: 0 DeclaredPredicates, 204 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2019-05-23 11:15:37,832 INFO L146 ILogger]: Start minimizeSevpa. Operand 239 states. [2019-05-23 11:15:37,836 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 239 to 214. [2019-05-23 11:15:37,837 INFO L146 ILogger]: Start removeUnreachable. Operand 214 states. [2019-05-23 11:15:37,837 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 214 states to 214 states and 224 transitions. [2019-05-23 11:15:37,838 INFO L146 ILogger]: Start accepts. Automaton has 214 states and 224 transitions. Word has length 194 [2019-05-23 11:15:37,838 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:37,838 INFO L146 ILogger]: Abstraction has 214 states and 224 transitions. [2019-05-23 11:15:37,838 INFO L146 ILogger]: Interpolant automaton has 9 states. [2019-05-23 11:15:37,838 INFO L146 ILogger]: Start isEmpty. Operand 214 states and 224 transitions. [2019-05-23 11:15:37,840 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 209 [2019-05-23 11:15:37,841 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:37,841 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:15:37,841 INFO L146 ILogger]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:37,841 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:37,842 INFO L146 ILogger]: Analyzing trace with hash 866577825, now seen corresponding path program 6 times [2019-05-23 11:15:37,842 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:37,842 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:37,843 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:37,843 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:15:37,843 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:37,865 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:38,065 INFO L146 ILogger]: Checked inductivity of 177 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2019-05-23 11:15:38,065 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:38,065 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:15:38,073 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:15:38,127 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2019-05-23 11:15:38,128 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:38,129 INFO L146 ILogger]: Trace formula consists of 255 conjuncts, 4 conjunts are in the unsatisfiable core [2019-05-23 11:15:38,131 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:15:38,270 INFO L146 ILogger]: Checked inductivity of 177 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2019-05-23 11:15:38,300 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:15:38,301 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2019-05-23 11:15:38,301 INFO L146 ILogger]: Interpolant automaton has 7 states [2019-05-23 11:15:38,301 INFO L146 ILogger]: Constructing interpolant automaton starting with 7 interpolants. [2019-05-23 11:15:38,303 INFO L146 ILogger]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-05-23 11:15:38,303 INFO L146 ILogger]: Start difference. First operand 214 states and 224 transitions. Second operand 7 states. [2019-05-23 11:15:38,653 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:38,653 INFO L146 ILogger]: Finished difference Result 293 states and 307 transitions. [2019-05-23 11:15:38,654 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-05-23 11:15:38,654 INFO L146 ILogger]: Start accepts. Automaton has 7 states. Word has length 208 [2019-05-23 11:15:38,655 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:38,658 INFO L146 ILogger]: With dead ends: 293 [2019-05-23 11:15:38,658 INFO L146 ILogger]: Without dead ends: 236 [2019-05-23 11:15:38,659 INFO L146 ILogger]: 0 DeclaredPredicates, 214 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:15:38,659 INFO L146 ILogger]: Start minimizeSevpa. Operand 236 states. [2019-05-23 11:15:38,663 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 236 to 221. [2019-05-23 11:15:38,663 INFO L146 ILogger]: Start removeUnreachable. Operand 221 states. [2019-05-23 11:15:38,664 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 221 states to 221 states and 231 transitions. [2019-05-23 11:15:38,664 INFO L146 ILogger]: Start accepts. Automaton has 221 states and 231 transitions. Word has length 208 [2019-05-23 11:15:38,665 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:38,665 INFO L146 ILogger]: Abstraction has 221 states and 231 transitions. [2019-05-23 11:15:38,665 INFO L146 ILogger]: Interpolant automaton has 7 states. [2019-05-23 11:15:38,665 INFO L146 ILogger]: Start isEmpty. Operand 221 states and 231 transitions. [2019-05-23 11:15:38,667 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 216 [2019-05-23 11:15:38,668 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:38,668 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:15:38,668 INFO L146 ILogger]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:38,668 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:38,669 INFO L146 ILogger]: Analyzing trace with hash -419123247, now seen corresponding path program 7 times [2019-05-23 11:15:38,669 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:38,669 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:38,670 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:38,670 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:15:38,670 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:38,691 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:38,960 INFO L146 ILogger]: Checked inductivity of 185 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2019-05-23 11:15:38,960 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:38,960 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:15:38,984 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:15:39,062 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:39,065 INFO L146 ILogger]: Trace formula consists of 377 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:15:39,069 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:15:39,530 INFO L146 ILogger]: Checked inductivity of 185 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2019-05-23 11:15:39,550 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:15:39,551 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 13] total 16 [2019-05-23 11:15:39,552 INFO L146 ILogger]: Interpolant automaton has 16 states [2019-05-23 11:15:39,552 INFO L146 ILogger]: Constructing interpolant automaton starting with 16 interpolants. [2019-05-23 11:15:39,553 INFO L146 ILogger]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2019-05-23 11:15:39,553 INFO L146 ILogger]: Start difference. First operand 221 states and 231 transitions. Second operand 16 states. [2019-05-23 11:15:40,755 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:40,755 INFO L146 ILogger]: Finished difference Result 410 states and 431 transitions. [2019-05-23 11:15:40,756 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-05-23 11:15:40,756 INFO L146 ILogger]: Start accepts. Automaton has 16 states. Word has length 215 [2019-05-23 11:15:40,756 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:40,757 INFO L146 ILogger]: With dead ends: 410 [2019-05-23 11:15:40,758 INFO L146 ILogger]: Without dead ends: 256 [2019-05-23 11:15:40,759 INFO L146 ILogger]: 0 DeclaredPredicates, 231 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=195, Invalid=561, Unknown=0, NotChecked=0, Total=756 [2019-05-23 11:15:40,759 INFO L146 ILogger]: Start minimizeSevpa. Operand 256 states. [2019-05-23 11:15:40,764 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 256 to 238. [2019-05-23 11:15:40,764 INFO L146 ILogger]: Start removeUnreachable. Operand 238 states. [2019-05-23 11:15:40,765 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 238 states to 238 states and 248 transitions. [2019-05-23 11:15:40,765 INFO L146 ILogger]: Start accepts. Automaton has 238 states and 248 transitions. Word has length 215 [2019-05-23 11:15:40,765 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:40,765 INFO L146 ILogger]: Abstraction has 238 states and 248 transitions. [2019-05-23 11:15:40,765 INFO L146 ILogger]: Interpolant automaton has 16 states. [2019-05-23 11:15:40,766 INFO L146 ILogger]: Start isEmpty. Operand 238 states and 248 transitions. [2019-05-23 11:15:40,767 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 233 [2019-05-23 11:15:40,767 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:40,767 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, 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] [2019-05-23 11:15:40,767 INFO L146 ILogger]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:40,768 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:40,768 INFO L146 ILogger]: Analyzing trace with hash 60329191, now seen corresponding path program 8 times [2019-05-23 11:15:40,768 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:40,768 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:40,769 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:40,769 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:15:40,769 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:40,791 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:41,074 INFO L146 ILogger]: Checked inductivity of 244 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 243 trivial. 0 not checked. [2019-05-23 11:15:41,075 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:41,075 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:15:41,092 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:15:41,176 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:15:41,176 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:41,178 INFO L146 ILogger]: Trace formula consists of 401 conjuncts, 14 conjunts are in the unsatisfiable core [2019-05-23 11:15:41,182 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:15:41,489 INFO L146 ILogger]: Checked inductivity of 244 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2019-05-23 11:15:41,520 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:15:41,520 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 15] total 18 [2019-05-23 11:15:41,521 INFO L146 ILogger]: Interpolant automaton has 18 states [2019-05-23 11:15:41,521 INFO L146 ILogger]: Constructing interpolant automaton starting with 18 interpolants. [2019-05-23 11:15:41,522 INFO L146 ILogger]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2019-05-23 11:15:41,522 INFO L146 ILogger]: Start difference. First operand 238 states and 248 transitions. Second operand 18 states. [2019-05-23 11:15:42,243 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:42,243 INFO L146 ILogger]: Finished difference Result 429 states and 450 transitions. [2019-05-23 11:15:42,243 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2019-05-23 11:15:42,244 INFO L146 ILogger]: Start accepts. Automaton has 18 states. Word has length 232 [2019-05-23 11:15:42,244 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:42,245 INFO L146 ILogger]: With dead ends: 429 [2019-05-23 11:15:42,246 INFO L146 ILogger]: Without dead ends: 268 [2019-05-23 11:15:42,247 INFO L146 ILogger]: 0 DeclaredPredicates, 250 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=260, Invalid=732, Unknown=0, NotChecked=0, Total=992 [2019-05-23 11:15:42,248 INFO L146 ILogger]: Start minimizeSevpa. Operand 268 states. [2019-05-23 11:15:42,252 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 268 to 255. [2019-05-23 11:15:42,253 INFO L146 ILogger]: Start removeUnreachable. Operand 255 states. [2019-05-23 11:15:42,254 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 255 states to 255 states and 265 transitions. [2019-05-23 11:15:42,254 INFO L146 ILogger]: Start accepts. Automaton has 255 states and 265 transitions. Word has length 232 [2019-05-23 11:15:42,254 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:42,254 INFO L146 ILogger]: Abstraction has 255 states and 265 transitions. [2019-05-23 11:15:42,254 INFO L146 ILogger]: Interpolant automaton has 18 states. [2019-05-23 11:15:42,254 INFO L146 ILogger]: Start isEmpty. Operand 255 states and 265 transitions. [2019-05-23 11:15:42,256 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 250 [2019-05-23 11:15:42,256 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:42,256 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, 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] [2019-05-23 11:15:42,256 INFO L146 ILogger]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:42,257 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:42,257 INFO L146 ILogger]: Analyzing trace with hash -99011842, now seen corresponding path program 9 times [2019-05-23 11:15:42,257 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:42,257 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:42,258 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:42,258 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:15:42,258 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:42,288 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:42,519 INFO L146 ILogger]: Checked inductivity of 313 backedges. 0 proven. 217 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2019-05-23 11:15:42,519 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:42,519 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:15:42,540 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:15:42,609 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-05-23 11:15:42,609 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:42,610 INFO L146 ILogger]: Trace formula consists of 345 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 11:15:42,615 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:15:42,748 INFO L146 ILogger]: Checked inductivity of 313 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 304 trivial. 0 not checked. [2019-05-23 11:15:42,769 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:15:42,769 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 7] total 22 [2019-05-23 11:15:42,770 INFO L146 ILogger]: Interpolant automaton has 22 states [2019-05-23 11:15:42,770 INFO L146 ILogger]: Constructing interpolant automaton starting with 22 interpolants. [2019-05-23 11:15:42,770 INFO L146 ILogger]: CoverageRelationStatistics Valid=94, Invalid=368, Unknown=0, NotChecked=0, Total=462 [2019-05-23 11:15:42,771 INFO L146 ILogger]: Start difference. First operand 255 states and 265 transitions. Second operand 22 states. [2019-05-23 11:15:49,629 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:49,629 INFO L146 ILogger]: Finished difference Result 453 states and 474 transitions. [2019-05-23 11:15:49,630 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2019-05-23 11:15:49,630 INFO L146 ILogger]: Start accepts. Automaton has 22 states. Word has length 249 [2019-05-23 11:15:49,630 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:49,632 INFO L146 ILogger]: With dead ends: 453 [2019-05-23 11:15:49,632 INFO L146 ILogger]: Without dead ends: 285 [2019-05-23 11:15:49,633 INFO L146 ILogger]: 0 DeclaredPredicates, 283 GetRequests, 245 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=360, Invalid=1200, Unknown=0, NotChecked=0, Total=1560 [2019-05-23 11:15:49,634 INFO L146 ILogger]: Start minimizeSevpa. Operand 285 states. [2019-05-23 11:15:49,639 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 285 to 272. [2019-05-23 11:15:49,639 INFO L146 ILogger]: Start removeUnreachable. Operand 272 states. [2019-05-23 11:15:49,641 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 272 states to 272 states and 282 transitions. [2019-05-23 11:15:49,641 INFO L146 ILogger]: Start accepts. Automaton has 272 states and 282 transitions. Word has length 249 [2019-05-23 11:15:49,641 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:49,641 INFO L146 ILogger]: Abstraction has 272 states and 282 transitions. [2019-05-23 11:15:49,642 INFO L146 ILogger]: Interpolant automaton has 22 states. [2019-05-23 11:15:49,642 INFO L146 ILogger]: Start isEmpty. Operand 272 states and 282 transitions. [2019-05-23 11:15:49,643 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 267 [2019-05-23 11:15:49,644 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:49,644 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, 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] [2019-05-23 11:15:49,644 INFO L146 ILogger]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:49,645 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:49,645 INFO L146 ILogger]: Analyzing trace with hash -564658406, now seen corresponding path program 10 times [2019-05-23 11:15:49,645 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:49,645 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:49,646 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:49,646 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:15:49,646 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:49,680 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:50,059 INFO L146 ILogger]: Checked inductivity of 399 backedges. 0 proven. 288 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2019-05-23 11:15:50,059 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:50,059 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:15:50,069 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:15:54,351 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:15:54,351 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:54,357 INFO L146 ILogger]: Trace formula consists of 449 conjuncts, 18 conjunts are in the unsatisfiable core [2019-05-23 11:15:54,361 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:15:54,449 INFO L146 ILogger]: Checked inductivity of 399 backedges. 0 proven. 288 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2019-05-23 11:15:54,470 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:15:54,470 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2019-05-23 11:15:54,471 INFO L146 ILogger]: Interpolant automaton has 21 states [2019-05-23 11:15:54,471 INFO L146 ILogger]: Constructing interpolant automaton starting with 21 interpolants. [2019-05-23 11:15:54,472 INFO L146 ILogger]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2019-05-23 11:15:54,472 INFO L146 ILogger]: Start difference. First operand 272 states and 282 transitions. Second operand 21 states. [2019-05-23 11:15:54,808 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:54,809 INFO L146 ILogger]: Finished difference Result 465 states and 485 transitions. [2019-05-23 11:15:54,809 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2019-05-23 11:15:54,809 INFO L146 ILogger]: Start accepts. Automaton has 21 states. Word has length 266 [2019-05-23 11:15:54,809 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:54,810 INFO L146 ILogger]: With dead ends: 465 [2019-05-23 11:15:54,811 INFO L146 ILogger]: Without dead ends: 290 [2019-05-23 11:15:54,812 INFO L146 ILogger]: 0 DeclaredPredicates, 300 GetRequests, 265 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=427, Invalid=905, Unknown=0, NotChecked=0, Total=1332 [2019-05-23 11:15:54,812 INFO L146 ILogger]: Start minimizeSevpa. Operand 290 states. [2019-05-23 11:15:54,817 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 290 to 282. [2019-05-23 11:15:54,817 INFO L146 ILogger]: Start removeUnreachable. Operand 282 states. [2019-05-23 11:15:54,818 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 282 states to 282 states and 292 transitions. [2019-05-23 11:15:54,818 INFO L146 ILogger]: Start accepts. Automaton has 282 states and 292 transitions. Word has length 266 [2019-05-23 11:15:54,819 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:54,819 INFO L146 ILogger]: Abstraction has 282 states and 292 transitions. [2019-05-23 11:15:54,819 INFO L146 ILogger]: Interpolant automaton has 21 states. [2019-05-23 11:15:54,819 INFO L146 ILogger]: Start isEmpty. Operand 282 states and 292 transitions. [2019-05-23 11:15:54,820 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 277 [2019-05-23 11:15:54,820 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:54,821 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, 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] [2019-05-23 11:15:54,821 INFO L146 ILogger]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:54,821 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:54,821 INFO L146 ILogger]: Analyzing trace with hash 1887985472, now seen corresponding path program 11 times [2019-05-23 11:15:54,822 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:54,822 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:54,822 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:54,823 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:15:54,823 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:54,853 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:55,153 INFO L146 ILogger]: Checked inductivity of 480 backedges. 0 proven. 369 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2019-05-23 11:15:55,154 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:55,154 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:15:55,163 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:16:15,927 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2019-05-23 11:16:15,928 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:15,945 INFO L146 ILogger]: Trace formula consists of 463 conjuncts, 8 conjunts are in the unsatisfiable core [2019-05-23 11:16:15,948 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:16:16,100 INFO L146 ILogger]: Checked inductivity of 480 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 456 trivial. 0 not checked. [2019-05-23 11:16:16,124 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:16:16,125 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 9] total 28 [2019-05-23 11:16:16,125 INFO L146 ILogger]: Interpolant automaton has 28 states [2019-05-23 11:16:16,125 INFO L146 ILogger]: Constructing interpolant automaton starting with 28 interpolants. [2019-05-23 11:16:16,126 INFO L146 ILogger]: CoverageRelationStatistics Valid=143, Invalid=613, Unknown=0, NotChecked=0, Total=756 [2019-05-23 11:16:16,126 INFO L146 ILogger]: Start difference. First operand 282 states and 292 transitions. Second operand 28 states. [2019-05-23 11:16:17,167 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:16:17,167 INFO L146 ILogger]: Finished difference Result 487 states and 508 transitions. [2019-05-23 11:16:17,168 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2019-05-23 11:16:17,168 INFO L146 ILogger]: Start accepts. Automaton has 28 states. Word has length 276 [2019-05-23 11:16:17,168 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:16:17,170 INFO L146 ILogger]: With dead ends: 487 [2019-05-23 11:16:17,170 INFO L146 ILogger]: Without dead ends: 312 [2019-05-23 11:16:17,171 INFO L146 ILogger]: 0 DeclaredPredicates, 320 GetRequests, 270 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 473 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=575, Invalid=2077, Unknown=0, NotChecked=0, Total=2652 [2019-05-23 11:16:17,171 INFO L146 ILogger]: Start minimizeSevpa. Operand 312 states. [2019-05-23 11:16:17,176 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 312 to 299. [2019-05-23 11:16:17,176 INFO L146 ILogger]: Start removeUnreachable. Operand 299 states. [2019-05-23 11:16:17,177 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 299 states to 299 states and 309 transitions. [2019-05-23 11:16:17,177 INFO L146 ILogger]: Start accepts. Automaton has 299 states and 309 transitions. Word has length 276 [2019-05-23 11:16:17,177 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:16:17,178 INFO L146 ILogger]: Abstraction has 299 states and 309 transitions. [2019-05-23 11:16:17,178 INFO L146 ILogger]: Interpolant automaton has 28 states. [2019-05-23 11:16:17,178 INFO L146 ILogger]: Start isEmpty. Operand 299 states and 309 transitions. [2019-05-23 11:16:17,179 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 294 [2019-05-23 11:16:17,179 INFO L146 ILogger]: Found error trace [2019-05-23 11:16:17,180 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, 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] [2019-05-23 11:16:17,180 INFO L146 ILogger]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:16:17,180 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:16:17,181 INFO L146 ILogger]: Analyzing trace with hash -57216841, now seen corresponding path program 12 times [2019-05-23 11:16:17,181 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:16:17,181 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:16:17,182 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:17,182 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:16:17,182 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:17,214 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:18,808 INFO L146 ILogger]: Checked inductivity of 593 backedges. 0 proven. 460 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2019-05-23 11:16:18,808 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:16:18,808 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 11:16:18,817 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:16:19,340 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2019-05-23 11:16:19,340 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:19,342 INFO L146 ILogger]: Trace formula consists of 373 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 11:16:19,345 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:16:20,406 INFO L146 ILogger]: Checked inductivity of 593 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 584 trivial. 0 not checked. [2019-05-23 11:16:20,426 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:16:20,426 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 7] total 28 [2019-05-23 11:16:20,427 INFO L146 ILogger]: Interpolant automaton has 28 states [2019-05-23 11:16:20,427 INFO L146 ILogger]: Constructing interpolant automaton starting with 28 interpolants. [2019-05-23 11:16:20,428 INFO L146 ILogger]: CoverageRelationStatistics Valid=157, Invalid=599, Unknown=0, NotChecked=0, Total=756 [2019-05-23 11:16:20,428 INFO L146 ILogger]: Start difference. First operand 299 states and 309 transitions. Second operand 28 states.