java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -s config/svcomp-Reach-32bit-Automizer_Default.epf --rcfgbuilder.command.for.external.solver 'z3 SMTLIB2_COMPLIANT=true -memory:4096 -smt2 -in -t:12000' -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --rcfgbuilder.size.of.a.code.block SingleStatement -i /storage/repos/svcomp/c/array-examples/standard_copy7_true-unreach-call_ground.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-7aa59a0 [2019-05-23 11:17:37,587 INFO L146 ILogger]: Resetting all preferences to default values... [2019-05-23 11:17:37,589 INFO L146 ILogger]: Resetting UltimateCore preferences to default values [2019-05-23 11:17:37,601 INFO L146 ILogger]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-05-23 11:17:37,601 INFO L146 ILogger]: Resetting Boogie Preprocessor preferences to default values [2019-05-23 11:17:37,602 INFO L146 ILogger]: Resetting Boogie Procedure Inliner preferences to default values [2019-05-23 11:17:37,604 INFO L146 ILogger]: Resetting Abstract Interpretation preferences to default values [2019-05-23 11:17:37,606 INFO L146 ILogger]: Resetting LassoRanker preferences to default values [2019-05-23 11:17:37,608 INFO L146 ILogger]: Resetting Reaching Definitions preferences to default values [2019-05-23 11:17:37,609 INFO L146 ILogger]: Resetting SyntaxChecker preferences to default values [2019-05-23 11:17:37,610 INFO L146 ILogger]: Büchi Program Product provides no preferences, ignoring... [2019-05-23 11:17:37,610 INFO L146 ILogger]: Resetting LTL2Aut preferences to default values [2019-05-23 11:17:37,611 INFO L146 ILogger]: Resetting PEA to Boogie preferences to default values [2019-05-23 11:17:37,612 INFO L146 ILogger]: Resetting BlockEncodingV2 preferences to default values [2019-05-23 11:17:37,618 INFO L146 ILogger]: Resetting ChcToBoogie preferences to default values [2019-05-23 11:17:37,619 INFO L146 ILogger]: Resetting AutomataScriptInterpreter preferences to default values [2019-05-23 11:17:37,620 INFO L146 ILogger]: Resetting BuchiAutomizer preferences to default values [2019-05-23 11:17:37,622 INFO L146 ILogger]: Resetting CACSL2BoogieTranslator preferences to default values [2019-05-23 11:17:37,627 INFO L146 ILogger]: Resetting CodeCheck preferences to default values [2019-05-23 11:17:37,632 INFO L146 ILogger]: Resetting InvariantSynthesis preferences to default values [2019-05-23 11:17:37,634 INFO L146 ILogger]: Resetting RCFGBuilder preferences to default values [2019-05-23 11:17:37,635 INFO L146 ILogger]: Resetting TraceAbstraction preferences to default values [2019-05-23 11:17:37,638 INFO L146 ILogger]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-05-23 11:17:37,638 INFO L146 ILogger]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-05-23 11:17:37,639 INFO L146 ILogger]: Resetting TreeAutomizer preferences to default values [2019-05-23 11:17:37,640 INFO L146 ILogger]: Resetting IcfgToChc preferences to default values [2019-05-23 11:17:37,640 INFO L146 ILogger]: Resetting IcfgTransformer preferences to default values [2019-05-23 11:17:37,641 INFO L146 ILogger]: ReqToTest provides no preferences, ignoring... [2019-05-23 11:17:37,641 INFO L146 ILogger]: Resetting Boogie Printer preferences to default values [2019-05-23 11:17:37,643 INFO L146 ILogger]: Resetting ChcSmtPrinter preferences to default values [2019-05-23 11:17:37,644 INFO L146 ILogger]: Resetting ReqPrinter preferences to default values [2019-05-23 11:17:37,647 INFO L146 ILogger]: Resetting Witness Printer preferences to default values [2019-05-23 11:17:37,648 INFO L146 ILogger]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-05-23 11:17:37,648 INFO L146 ILogger]: Resetting CDTParser preferences to default values [2019-05-23 11:17:37,649 INFO L146 ILogger]: AutomataScriptParser provides no preferences, ignoring... [2019-05-23 11:17:37,649 INFO L146 ILogger]: ReqParser provides no preferences, ignoring... [2019-05-23 11:17:37,649 INFO L146 ILogger]: Resetting SmtParser preferences to default values [2019-05-23 11:17:37,652 INFO L146 ILogger]: Resetting Witness Parser preferences to default values [2019-05-23 11:17:37,653 INFO L146 ILogger]: Finished resetting all preferences to default values... [2019-05-23 11:17:37,654 INFO L146 ILogger]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-05-23 11:17:37,683 INFO L146 ILogger]: Loading preferences was successful [2019-05-23 11:17:37,683 INFO L146 ILogger]: Preferences different from defaults after loading the file: [2019-05-23 11:17:37,684 INFO L146 ILogger]: Preferences of BlockEncodingV2 differ from their defaults: [2019-05-23 11:17:37,685 INFO L146 ILogger]: * Create parallel compositions if possible=false [2019-05-23 11:17:37,685 INFO L146 ILogger]: * Use SBE=true [2019-05-23 11:17:37,685 INFO L146 ILogger]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-05-23 11:17:37,685 INFO L146 ILogger]: * sizeof long=4 [2019-05-23 11:17:37,686 INFO L146 ILogger]: * Overapproximate operations on floating types=true [2019-05-23 11:17:37,686 INFO L146 ILogger]: * sizeof POINTER=4 [2019-05-23 11:17:37,686 INFO L146 ILogger]: * Check division by zero=IGNORE [2019-05-23 11:17:37,686 INFO L146 ILogger]: * Pointer to allocated memory at dereference=IGNORE [2019-05-23 11:17:37,686 INFO L146 ILogger]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-05-23 11:17:37,687 INFO L146 ILogger]: * Check array bounds for arrays that are off heap=IGNORE [2019-05-23 11:17:37,687 INFO L146 ILogger]: * sizeof long double=12 [2019-05-23 11:17:37,687 INFO L146 ILogger]: * Check if freed pointer was valid=false [2019-05-23 11:17:37,687 INFO L146 ILogger]: * Use constant arrays=true [2019-05-23 11:17:37,687 INFO L146 ILogger]: * Pointer base address is valid at dereference=IGNORE [2019-05-23 11:17:37,688 INFO L146 ILogger]: Preferences of RCFGBuilder differ from their defaults: [2019-05-23 11:17:37,688 INFO L146 ILogger]: * Size of a code block=SequenceOfStatements [2019-05-23 11:17:37,688 INFO L146 ILogger]: * To the following directory=./dump/ [2019-05-23 11:17:37,688 INFO L146 ILogger]: * SMT solver=External_DefaultMode [2019-05-23 11:17:37,688 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-05-23 11:17:37,689 INFO L146 ILogger]: Preferences of TraceAbstraction differ from their defaults: [2019-05-23 11:17:37,689 INFO L146 ILogger]: * Compute Interpolants along a Counterexample=FPandBP [2019-05-23 11:17:37,689 INFO L146 ILogger]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-05-23 11:17:37,689 INFO L146 ILogger]: * Trace refinement strategy=CAMEL [2019-05-23 11:17:37,689 INFO L146 ILogger]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-05-23 11:17:37,690 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-05-23 11:17:37,690 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 11:17:37,741 INFO L146 ILogger]: Repository-Root is: /tmp [2019-05-23 11:17:37,757 INFO L146 ILogger]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-05-23 11:17:37,764 INFO L146 ILogger]: [Toolchain 1]: Toolchain selected. [2019-05-23 11:17:37,765 INFO L146 ILogger]: Initializing CDTParser... [2019-05-23 11:17:37,766 INFO L146 ILogger]: CDTParser initialized [2019-05-23 11:17:37,766 INFO L146 ILogger]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/array-examples/standard_copy7_true-unreach-call_ground.i [2019-05-23 11:17:37,817 INFO L146 ILogger]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4404e4021/dc8efb71cdf84a6796754fcb7740bd46/FLAGce6915c3b [2019-05-23 11:17:38,240 INFO L146 ILogger]: Found 1 translation units. [2019-05-23 11:17:38,241 INFO L146 ILogger]: Scanning /storage/repos/svcomp/c/array-examples/standard_copy7_true-unreach-call_ground.i [2019-05-23 11:17:38,247 INFO L146 ILogger]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4404e4021/dc8efb71cdf84a6796754fcb7740bd46/FLAGce6915c3b [2019-05-23 11:17:38,607 INFO L146 ILogger]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4404e4021/dc8efb71cdf84a6796754fcb7740bd46 [2019-05-23 11:17:38,616 INFO L146 ILogger]: ####################### [Toolchain 1] ####################### [2019-05-23 11:17:38,618 INFO L146 ILogger]: Walking toolchain with 5 elements. [2019-05-23 11:17:38,619 INFO L146 ILogger]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-05-23 11:17:38,619 INFO L146 ILogger]: Initializing CACSL2BoogieTranslator... [2019-05-23 11:17:38,622 INFO L146 ILogger]: CACSL2BoogieTranslator initialized [2019-05-23 11:17:38,623 INFO L146 ILogger]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:17:38" (1/1) ... [2019-05-23 11:17:38,626 INFO L146 ILogger]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7de99a9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:17:38, skipping insertion in model container [2019-05-23 11:17:38,626 INFO L146 ILogger]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:17:38" (1/1) ... [2019-05-23 11:17:38,632 INFO L146 ILogger]: Starting translation in SV-COMP mode [2019-05-23 11:17:38,651 INFO L146 ILogger]: Built tables and reachable declarations [2019-05-23 11:17:38,839 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:17:38,845 INFO L146 ILogger]: Completed pre-run [2019-05-23 11:17:38,881 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:17:38,905 INFO L146 ILogger]: Completed translation [2019-05-23 11:17:38,905 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:17:38 WrapperNode [2019-05-23 11:17:38,906 INFO L146 ILogger]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-05-23 11:17:38,906 INFO L146 ILogger]: ------------------------Boogie Procedure Inliner---------------------------- [2019-05-23 11:17:38,906 INFO L146 ILogger]: Initializing Boogie Procedure Inliner... [2019-05-23 11:17:38,907 INFO L146 ILogger]: Boogie Procedure Inliner initialized [2019-05-23 11:17:38,914 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:17:38" (1/1) ... [2019-05-23 11:17:38,924 INFO L146 ILogger]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:17:38" (1/1) ... [2019-05-23 11:17:38,952 INFO L146 ILogger]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-05-23 11:17:38,952 INFO L146 ILogger]: ------------------------Boogie Preprocessor---------------------------- [2019-05-23 11:17:38,952 INFO L146 ILogger]: Initializing Boogie Preprocessor... [2019-05-23 11:17:38,952 INFO L146 ILogger]: Boogie Preprocessor initialized [2019-05-23 11:17:38,964 INFO L146 ILogger]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:17:38" (1/1) ... [2019-05-23 11:17:38,964 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:17:38" (1/1) ... [2019-05-23 11:17:38,969 INFO L146 ILogger]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:17:38" (1/1) ... [2019-05-23 11:17:38,969 INFO L146 ILogger]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:17:38" (1/1) ... [2019-05-23 11:17:39,075 INFO L146 ILogger]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:17:38" (1/1) ... [2019-05-23 11:17:39,081 INFO L146 ILogger]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:17:38" (1/1) ... [2019-05-23 11:17:39,083 INFO L146 ILogger]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:17:38" (1/1) ... [2019-05-23 11:17:39,086 INFO L146 ILogger]: ------------------------ END Boogie Preprocessor---------------------------- [2019-05-23 11:17:39,087 INFO L146 ILogger]: ------------------------RCFGBuilder---------------------------- [2019-05-23 11:17:39,087 INFO L146 ILogger]: Initializing RCFGBuilder... [2019-05-23 11:17:39,087 INFO L146 ILogger]: RCFGBuilder initialized [2019-05-23 11:17:39,088 INFO L146 ILogger]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:17:38" (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 11:17:39,148 INFO L146 ILogger]: Found specification of procedure write~int [2019-05-23 11:17:39,149 INFO L146 ILogger]: Found specification of procedure ULTIMATE.start [2019-05-23 11:17:39,149 INFO L146 ILogger]: Found implementation of procedure ULTIMATE.start [2019-05-23 11:17:39,149 INFO L146 ILogger]: Found specification of procedure read~int [2019-05-23 11:17:39,149 INFO L146 ILogger]: Found specification of procedure #Ultimate.allocOnStack [2019-05-23 11:17:39,149 INFO L146 ILogger]: Found specification of procedure ULTIMATE.dealloc [2019-05-23 11:17:40,010 INFO L146 ILogger]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-05-23 11:17:40,011 INFO L146 ILogger]: Removed 15 assume(true) statements. [2019-05-23 11:17:40,012 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:17:40 BoogieIcfgContainer [2019-05-23 11:17:40,013 INFO L146 ILogger]: ------------------------ END RCFGBuilder---------------------------- [2019-05-23 11:17:40,014 INFO L146 ILogger]: ------------------------TraceAbstraction---------------------------- [2019-05-23 11:17:40,014 INFO L146 ILogger]: Initializing TraceAbstraction... [2019-05-23 11:17:40,017 INFO L146 ILogger]: TraceAbstraction initialized [2019-05-23 11:17:40,018 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.05 11:17:38" (1/3) ... [2019-05-23 11:17:40,018 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b9e2733 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:17:40, skipping insertion in model container [2019-05-23 11:17:40,019 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:17:38" (2/3) ... [2019-05-23 11:17:40,019 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b9e2733 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:17:40, skipping insertion in model container [2019-05-23 11:17:40,019 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:17:40" (3/3) ... [2019-05-23 11:17:40,021 INFO L146 ILogger]: Analyzing ICFG standard_copy7_true-unreach-call_ground.i [2019-05-23 11:17:40,029 INFO L146 ILogger]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-05-23 11:17:40,037 INFO L146 ILogger]: Appying trace abstraction to program that has 1 error locations. [2019-05-23 11:17:40,053 INFO L146 ILogger]: Starting to check reachability of 1 error locations. [2019-05-23 11:17:40,085 INFO L146 ILogger]: Using default assertion order modulation [2019-05-23 11:17:40,086 INFO L146 ILogger]: Interprodecural is true [2019-05-23 11:17:40,086 INFO L146 ILogger]: Hoare is true [2019-05-23 11:17:40,086 INFO L146 ILogger]: Compute interpolants for FPandBP [2019-05-23 11:17:40,086 INFO L146 ILogger]: Backedges is STRAIGHT_LINE [2019-05-23 11:17:40,086 INFO L146 ILogger]: Determinization is PREDICATE_ABSTRACTION [2019-05-23 11:17:40,086 INFO L146 ILogger]: Difference is false [2019-05-23 11:17:40,087 INFO L146 ILogger]: Minimize is MINIMIZE_SEVPA [2019-05-23 11:17:40,087 INFO L146 ILogger]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-05-23 11:17:40,104 INFO L146 ILogger]: Start isEmpty. Operand 114 states. [2019-05-23 11:17:40,112 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 41 [2019-05-23 11:17:40,112 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:40,113 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:40,115 INFO L146 ILogger]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:40,120 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:40,121 INFO L146 ILogger]: Analyzing trace with hash -1755728900, now seen corresponding path program 1 times [2019-05-23 11:17:40,123 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:40,123 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:40,167 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:40,167 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:17:40,168 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:40,224 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:40,310 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 11:17:40,313 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:17:40,314 INFO L146 ILogger]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-05-23 11:17:40,318 INFO L146 ILogger]: Interpolant automaton has 2 states [2019-05-23 11:17:40,332 INFO L146 ILogger]: Constructing interpolant automaton starting with 2 interpolants. [2019-05-23 11:17:40,333 INFO L146 ILogger]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-05-23 11:17:40,336 INFO L146 ILogger]: Start difference. First operand 114 states. Second operand 2 states. [2019-05-23 11:17:40,364 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:40,364 INFO L146 ILogger]: Finished difference Result 207 states and 241 transitions. [2019-05-23 11:17:40,364 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-05-23 11:17:40,366 INFO L146 ILogger]: Start accepts. Automaton has 2 states. Word has length 40 [2019-05-23 11:17:40,367 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:40,378 INFO L146 ILogger]: With dead ends: 207 [2019-05-23 11:17:40,379 INFO L146 ILogger]: Without dead ends: 94 [2019-05-23 11:17:40,385 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 11:17:40,401 INFO L146 ILogger]: Start minimizeSevpa. Operand 94 states. [2019-05-23 11:17:40,421 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 94 to 94. [2019-05-23 11:17:40,422 INFO L146 ILogger]: Start removeUnreachable. Operand 94 states. [2019-05-23 11:17:40,424 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 94 states to 94 states and 102 transitions. [2019-05-23 11:17:40,426 INFO L146 ILogger]: Start accepts. Automaton has 94 states and 102 transitions. Word has length 40 [2019-05-23 11:17:40,426 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:40,427 INFO L146 ILogger]: Abstraction has 94 states and 102 transitions. [2019-05-23 11:17:40,427 INFO L146 ILogger]: Interpolant automaton has 2 states. [2019-05-23 11:17:40,427 INFO L146 ILogger]: Start isEmpty. Operand 94 states and 102 transitions. [2019-05-23 11:17:40,429 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 41 [2019-05-23 11:17:40,429 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:40,429 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:40,430 INFO L146 ILogger]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:40,430 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:40,430 INFO L146 ILogger]: Analyzing trace with hash 1625188485, now seen corresponding path program 1 times [2019-05-23 11:17:40,431 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:40,431 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:40,432 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:40,432 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:17:40,433 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:40,467 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:40,559 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 11:17:40,559 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:17:40,559 INFO L146 ILogger]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-05-23 11:17:40,561 INFO L146 ILogger]: Interpolant automaton has 3 states [2019-05-23 11:17:40,561 INFO L146 ILogger]: Constructing interpolant automaton starting with 3 interpolants. [2019-05-23 11:17:40,562 INFO L146 ILogger]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-05-23 11:17:40,562 INFO L146 ILogger]: Start difference. First operand 94 states and 102 transitions. Second operand 3 states. [2019-05-23 11:17:40,627 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:40,627 INFO L146 ILogger]: Finished difference Result 173 states and 189 transitions. [2019-05-23 11:17:40,628 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-05-23 11:17:40,628 INFO L146 ILogger]: Start accepts. Automaton has 3 states. Word has length 40 [2019-05-23 11:17:40,628 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:40,629 INFO L146 ILogger]: With dead ends: 173 [2019-05-23 11:17:40,630 INFO L146 ILogger]: Without dead ends: 100 [2019-05-23 11:17:40,631 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 11:17:40,631 INFO L146 ILogger]: Start minimizeSevpa. Operand 100 states. [2019-05-23 11:17:40,644 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 100 to 95. [2019-05-23 11:17:40,644 INFO L146 ILogger]: Start removeUnreachable. Operand 95 states. [2019-05-23 11:17:40,648 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 95 states to 95 states and 103 transitions. [2019-05-23 11:17:40,649 INFO L146 ILogger]: Start accepts. Automaton has 95 states and 103 transitions. Word has length 40 [2019-05-23 11:17:40,649 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:40,649 INFO L146 ILogger]: Abstraction has 95 states and 103 transitions. [2019-05-23 11:17:40,649 INFO L146 ILogger]: Interpolant automaton has 3 states. [2019-05-23 11:17:40,649 INFO L146 ILogger]: Start isEmpty. Operand 95 states and 103 transitions. [2019-05-23 11:17:40,651 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 48 [2019-05-23 11:17:40,652 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:40,652 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] [2019-05-23 11:17:40,652 INFO L146 ILogger]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:40,653 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:40,654 INFO L146 ILogger]: Analyzing trace with hash 1706840335, now seen corresponding path program 1 times [2019-05-23 11:17:40,654 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:40,654 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:40,655 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:40,655 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:17:40,655 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:40,683 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:40,759 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 11:17:40,759 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:40,759 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 11:17:40,783 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:17:40,840 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:40,842 INFO L146 ILogger]: Trace formula consists of 125 conjuncts, 2 conjunts are in the unsatisfiable core [2019-05-23 11:17:40,848 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:40,893 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 11:17:40,927 INFO L146 ILogger]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-05-23 11:17:40,928 INFO L146 ILogger]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2019-05-23 11:17:40,931 INFO L146 ILogger]: Interpolant automaton has 6 states [2019-05-23 11:17:40,932 INFO L146 ILogger]: Constructing interpolant automaton starting with 6 interpolants. [2019-05-23 11:17:40,932 INFO L146 ILogger]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-05-23 11:17:40,933 INFO L146 ILogger]: Start difference. First operand 95 states and 103 transitions. Second operand 6 states. [2019-05-23 11:17:41,924 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:41,925 INFO L146 ILogger]: Finished difference Result 222 states and 245 transitions. [2019-05-23 11:17:41,928 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-05-23 11:17:41,928 INFO L146 ILogger]: Start accepts. Automaton has 6 states. Word has length 47 [2019-05-23 11:17:41,929 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:41,930 INFO L146 ILogger]: With dead ends: 222 [2019-05-23 11:17:41,930 INFO L146 ILogger]: Without dead ends: 149 [2019-05-23 11:17:41,933 INFO L146 ILogger]: 0 DeclaredPredicates, 53 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2019-05-23 11:17:41,933 INFO L146 ILogger]: Start minimizeSevpa. Operand 149 states. [2019-05-23 11:17:41,947 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 149 to 109. [2019-05-23 11:17:41,948 INFO L146 ILogger]: Start removeUnreachable. Operand 109 states. [2019-05-23 11:17:41,951 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 109 states to 109 states and 117 transitions. [2019-05-23 11:17:41,951 INFO L146 ILogger]: Start accepts. Automaton has 109 states and 117 transitions. Word has length 47 [2019-05-23 11:17:41,952 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:41,952 INFO L146 ILogger]: Abstraction has 109 states and 117 transitions. [2019-05-23 11:17:41,952 INFO L146 ILogger]: Interpolant automaton has 6 states. [2019-05-23 11:17:41,952 INFO L146 ILogger]: Start isEmpty. Operand 109 states and 117 transitions. [2019-05-23 11:17:41,957 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 104 [2019-05-23 11:17:41,958 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:41,958 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:41,958 INFO L146 ILogger]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:41,959 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:41,961 INFO L146 ILogger]: Analyzing trace with hash 409768422, now seen corresponding path program 1 times [2019-05-23 11:17:41,961 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:41,961 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:41,962 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:41,962 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:17:41,962 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:42,004 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:42,101 INFO L146 ILogger]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-05-23 11:17:42,102 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:42,102 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 11:17:42,119 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:17:42,174 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:42,175 INFO L146 ILogger]: Trace formula consists of 205 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 11:17:42,180 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:42,312 INFO L146 ILogger]: Checked inductivity of 16 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-05-23 11:17:42,333 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:42,333 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7] total 10 [2019-05-23 11:17:42,333 INFO L146 ILogger]: Interpolant automaton has 10 states [2019-05-23 11:17:42,334 INFO L146 ILogger]: Constructing interpolant automaton starting with 10 interpolants. [2019-05-23 11:17:42,335 INFO L146 ILogger]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2019-05-23 11:17:42,335 INFO L146 ILogger]: Start difference. First operand 109 states and 117 transitions. Second operand 10 states. [2019-05-23 11:17:43,411 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:43,412 INFO L146 ILogger]: Finished difference Result 243 states and 260 transitions. [2019-05-23 11:17:43,413 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-05-23 11:17:43,413 INFO L146 ILogger]: Start accepts. Automaton has 10 states. Word has length 103 [2019-05-23 11:17:43,414 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:43,416 INFO L146 ILogger]: With dead ends: 243 [2019-05-23 11:17:43,416 INFO L146 ILogger]: Without dead ends: 163 [2019-05-23 11:17:43,417 INFO L146 ILogger]: 0 DeclaredPredicates, 113 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2019-05-23 11:17:43,418 INFO L146 ILogger]: Start minimizeSevpa. Operand 163 states. [2019-05-23 11:17:43,428 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 163 to 123. [2019-05-23 11:17:43,428 INFO L146 ILogger]: Start removeUnreachable. Operand 123 states. [2019-05-23 11:17:43,429 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 123 states to 123 states and 131 transitions. [2019-05-23 11:17:43,429 INFO L146 ILogger]: Start accepts. Automaton has 123 states and 131 transitions. Word has length 103 [2019-05-23 11:17:43,430 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:43,430 INFO L146 ILogger]: Abstraction has 123 states and 131 transitions. [2019-05-23 11:17:43,430 INFO L146 ILogger]: Interpolant automaton has 10 states. [2019-05-23 11:17:43,430 INFO L146 ILogger]: Start isEmpty. Operand 123 states and 131 transitions. [2019-05-23 11:17:43,433 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 118 [2019-05-23 11:17:43,433 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:43,433 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:43,433 INFO L146 ILogger]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:43,433 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:43,434 INFO L146 ILogger]: Analyzing trace with hash -1081127388, now seen corresponding path program 2 times [2019-05-23 11:17:43,434 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:43,434 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:43,435 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:43,435 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:17:43,435 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:43,455 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:43,548 INFO L146 ILogger]: Checked inductivity of 39 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-05-23 11:17:43,549 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:43,549 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 11:17:43,558 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:17:43,619 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:17:43,620 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:43,621 INFO L146 ILogger]: Trace formula consists of 225 conjuncts, 8 conjunts are in the unsatisfiable core [2019-05-23 11:17:43,626 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:43,984 INFO L146 ILogger]: Checked inductivity of 39 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-05-23 11:17:44,003 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:44,004 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9] total 12 [2019-05-23 11:17:44,004 INFO L146 ILogger]: Interpolant automaton has 12 states [2019-05-23 11:17:44,004 INFO L146 ILogger]: Constructing interpolant automaton starting with 12 interpolants. [2019-05-23 11:17:44,006 INFO L146 ILogger]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2019-05-23 11:17:44,006 INFO L146 ILogger]: Start difference. First operand 123 states and 131 transitions. Second operand 12 states. [2019-05-23 11:17:44,505 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:44,505 INFO L146 ILogger]: Finished difference Result 259 states and 276 transitions. [2019-05-23 11:17:44,505 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-05-23 11:17:44,506 INFO L146 ILogger]: Start accepts. Automaton has 12 states. Word has length 117 [2019-05-23 11:17:44,506 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:44,508 INFO L146 ILogger]: With dead ends: 259 [2019-05-23 11:17:44,508 INFO L146 ILogger]: Without dead ends: 172 [2019-05-23 11:17:44,510 INFO L146 ILogger]: 0 DeclaredPredicates, 129 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=95, Invalid=285, Unknown=0, NotChecked=0, Total=380 [2019-05-23 11:17:44,510 INFO L146 ILogger]: Start minimizeSevpa. Operand 172 states. [2019-05-23 11:17:44,517 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 172 to 137. [2019-05-23 11:17:44,518 INFO L146 ILogger]: Start removeUnreachable. Operand 137 states. [2019-05-23 11:17:44,518 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 137 states to 137 states and 145 transitions. [2019-05-23 11:17:44,519 INFO L146 ILogger]: Start accepts. Automaton has 137 states and 145 transitions. Word has length 117 [2019-05-23 11:17:44,520 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:44,520 INFO L146 ILogger]: Abstraction has 137 states and 145 transitions. [2019-05-23 11:17:44,520 INFO L146 ILogger]: Interpolant automaton has 12 states. [2019-05-23 11:17:44,520 INFO L146 ILogger]: Start isEmpty. Operand 137 states and 145 transitions. [2019-05-23 11:17:44,522 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 132 [2019-05-23 11:17:44,522 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:44,523 INFO L146 ILogger]: trace histogram [4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:44,524 INFO L146 ILogger]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:44,524 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:44,524 INFO L146 ILogger]: Analyzing trace with hash -1459008051, now seen corresponding path program 3 times [2019-05-23 11:17:44,524 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:44,525 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:44,525 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:44,526 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:17:44,526 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:44,549 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:44,665 INFO L146 ILogger]: Checked inductivity of 69 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2019-05-23 11:17:44,666 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:44,666 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 11:17:44,677 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:17:44,733 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-05-23 11:17:44,733 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:44,734 INFO L146 ILogger]: Trace formula consists of 195 conjuncts, 4 conjunts are in the unsatisfiable core [2019-05-23 11:17:44,739 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:44,867 INFO L146 ILogger]: Checked inductivity of 69 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2019-05-23 11:17:44,887 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:44,887 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2019-05-23 11:17:44,888 INFO L146 ILogger]: Interpolant automaton has 7 states [2019-05-23 11:17:44,888 INFO L146 ILogger]: Constructing interpolant automaton starting with 7 interpolants. [2019-05-23 11:17:44,888 INFO L146 ILogger]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-05-23 11:17:44,888 INFO L146 ILogger]: Start difference. First operand 137 states and 145 transitions. Second operand 7 states. [2019-05-23 11:17:45,070 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:45,070 INFO L146 ILogger]: Finished difference Result 221 states and 234 transitions. [2019-05-23 11:17:45,070 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-05-23 11:17:45,071 INFO L146 ILogger]: Start accepts. Automaton has 7 states. Word has length 131 [2019-05-23 11:17:45,072 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:45,073 INFO L146 ILogger]: With dead ends: 221 [2019-05-23 11:17:45,074 INFO L146 ILogger]: Without dead ends: 169 [2019-05-23 11:17:45,074 INFO L146 ILogger]: 0 DeclaredPredicates, 137 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:17:45,075 INFO L146 ILogger]: Start minimizeSevpa. Operand 169 states. [2019-05-23 11:17:45,082 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 169 to 144. [2019-05-23 11:17:45,082 INFO L146 ILogger]: Start removeUnreachable. Operand 144 states. [2019-05-23 11:17:45,083 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 144 states to 144 states and 152 transitions. [2019-05-23 11:17:45,083 INFO L146 ILogger]: Start accepts. Automaton has 144 states and 152 transitions. Word has length 131 [2019-05-23 11:17:45,083 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:45,083 INFO L146 ILogger]: Abstraction has 144 states and 152 transitions. [2019-05-23 11:17:45,084 INFO L146 ILogger]: Interpolant automaton has 7 states. [2019-05-23 11:17:45,084 INFO L146 ILogger]: Start isEmpty. Operand 144 states and 152 transitions. [2019-05-23 11:17:45,085 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 139 [2019-05-23 11:17:45,086 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:45,086 INFO L146 ILogger]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:17:45,086 INFO L146 ILogger]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:45,086 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:45,087 INFO L146 ILogger]: Analyzing trace with hash 1355558771, now seen corresponding path program 4 times [2019-05-23 11:17:45,087 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:45,087 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:45,088 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:45,088 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:17:45,088 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:45,108 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:45,195 INFO L146 ILogger]: Checked inductivity of 77 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2019-05-23 11:17:45,195 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:45,195 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 11:17:45,206 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:17:45,357 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:17:45,357 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:45,359 INFO L146 ILogger]: Trace formula consists of 255 conjuncts, 10 conjunts are in the unsatisfiable core [2019-05-23 11:17:45,364 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:45,482 INFO L146 ILogger]: Checked inductivity of 77 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-05-23 11:17:45,501 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:45,502 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 11] total 14 [2019-05-23 11:17:45,502 INFO L146 ILogger]: Interpolant automaton has 14 states [2019-05-23 11:17:45,502 INFO L146 ILogger]: Constructing interpolant automaton starting with 14 interpolants. [2019-05-23 11:17:45,503 INFO L146 ILogger]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2019-05-23 11:17:45,504 INFO L146 ILogger]: Start difference. First operand 144 states and 152 transitions. Second operand 14 states. [2019-05-23 11:17:46,060 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:46,060 INFO L146 ILogger]: Finished difference Result 284 states and 301 transitions. [2019-05-23 11:17:46,062 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-05-23 11:17:46,062 INFO L146 ILogger]: Start accepts. Automaton has 14 states. Word has length 138 [2019-05-23 11:17:46,062 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:46,064 INFO L146 ILogger]: With dead ends: 284 [2019-05-23 11:17:46,064 INFO L146 ILogger]: Without dead ends: 183 [2019-05-23 11:17:46,065 INFO L146 ILogger]: 0 DeclaredPredicates, 152 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=140, Invalid=412, Unknown=0, NotChecked=0, Total=552 [2019-05-23 11:17:46,066 INFO L146 ILogger]: Start minimizeSevpa. Operand 183 states. [2019-05-23 11:17:46,070 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 183 to 158. [2019-05-23 11:17:46,071 INFO L146 ILogger]: Start removeUnreachable. Operand 158 states. [2019-05-23 11:17:46,071 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 158 states to 158 states and 166 transitions. [2019-05-23 11:17:46,071 INFO L146 ILogger]: Start accepts. Automaton has 158 states and 166 transitions. Word has length 138 [2019-05-23 11:17:46,072 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:46,072 INFO L146 ILogger]: Abstraction has 158 states and 166 transitions. [2019-05-23 11:17:46,072 INFO L146 ILogger]: Interpolant automaton has 14 states. [2019-05-23 11:17:46,072 INFO L146 ILogger]: Start isEmpty. Operand 158 states and 166 transitions. [2019-05-23 11:17:46,074 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 153 [2019-05-23 11:17:46,074 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:46,074 INFO L146 ILogger]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:17:46,075 INFO L146 ILogger]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:46,075 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:46,075 INFO L146 ILogger]: Analyzing trace with hash 1514247338, now seen corresponding path program 5 times [2019-05-23 11:17:46,075 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:46,075 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:46,076 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:46,076 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:17:46,076 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:46,094 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:46,175 INFO L146 ILogger]: Checked inductivity of 114 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2019-05-23 11:17:46,176 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:46,176 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 11:17:46,184 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:17:46,552 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2019-05-23 11:17:46,552 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:46,553 INFO L146 ILogger]: Trace formula consists of 275 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 11:17:46,557 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:46,621 INFO L146 ILogger]: Checked inductivity of 114 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2019-05-23 11:17:46,641 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:46,641 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7] total 9 [2019-05-23 11:17:46,642 INFO L146 ILogger]: Interpolant automaton has 9 states [2019-05-23 11:17:46,642 INFO L146 ILogger]: Constructing interpolant automaton starting with 9 interpolants. [2019-05-23 11:17:46,642 INFO L146 ILogger]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:17:46,642 INFO L146 ILogger]: Start difference. First operand 158 states and 166 transitions. Second operand 9 states. [2019-05-23 11:17:47,194 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:47,194 INFO L146 ILogger]: Finished difference Result 267 states and 282 transitions. [2019-05-23 11:17:47,194 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-05-23 11:17:47,195 INFO L146 ILogger]: Start accepts. Automaton has 9 states. Word has length 152 [2019-05-23 11:17:47,195 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:47,197 INFO L146 ILogger]: With dead ends: 267 [2019-05-23 11:17:47,197 INFO L146 ILogger]: Without dead ends: 192 [2019-05-23 11:17:47,198 INFO L146 ILogger]: 0 DeclaredPredicates, 162 GetRequests, 149 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 11:17:47,198 INFO L146 ILogger]: Start minimizeSevpa. Operand 192 states. [2019-05-23 11:17:47,202 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 192 to 172. [2019-05-23 11:17:47,203 INFO L146 ILogger]: Start removeUnreachable. Operand 172 states. [2019-05-23 11:17:47,203 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 172 states to 172 states and 180 transitions. [2019-05-23 11:17:47,204 INFO L146 ILogger]: Start accepts. Automaton has 172 states and 180 transitions. Word has length 152 [2019-05-23 11:17:47,204 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:47,204 INFO L146 ILogger]: Abstraction has 172 states and 180 transitions. [2019-05-23 11:17:47,204 INFO L146 ILogger]: Interpolant automaton has 9 states. [2019-05-23 11:17:47,204 INFO L146 ILogger]: Start isEmpty. Operand 172 states and 180 transitions. [2019-05-23 11:17:47,206 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 167 [2019-05-23 11:17:47,206 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:47,207 INFO L146 ILogger]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:17:47,207 INFO L146 ILogger]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:47,207 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:47,207 INFO L146 ILogger]: Analyzing trace with hash -414483659, now seen corresponding path program 6 times [2019-05-23 11:17:47,207 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:47,208 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:47,208 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:47,209 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:17:47,209 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:47,235 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:47,355 INFO L146 ILogger]: Checked inductivity of 137 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2019-05-23 11:17:47,355 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:47,355 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 11:17:47,374 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:17:47,435 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2019-05-23 11:17:47,435 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:47,436 INFO L146 ILogger]: Trace formula consists of 205 conjuncts, 4 conjunts are in the unsatisfiable core [2019-05-23 11:17:47,438 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:47,474 INFO L146 ILogger]: Checked inductivity of 137 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2019-05-23 11:17:47,492 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:47,493 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2019-05-23 11:17:47,493 INFO L146 ILogger]: Interpolant automaton has 7 states [2019-05-23 11:17:47,494 INFO L146 ILogger]: Constructing interpolant automaton starting with 7 interpolants. [2019-05-23 11:17:47,494 INFO L146 ILogger]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-05-23 11:17:47,494 INFO L146 ILogger]: Start difference. First operand 172 states and 180 transitions. Second operand 7 states. [2019-05-23 11:17:47,759 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:47,759 INFO L146 ILogger]: Finished difference Result 214 states and 224 transitions. [2019-05-23 11:17:47,759 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-05-23 11:17:47,760 INFO L146 ILogger]: Start accepts. Automaton has 7 states. Word has length 166 [2019-05-23 11:17:47,761 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:47,762 INFO L146 ILogger]: With dead ends: 214 [2019-05-23 11:17:47,762 INFO L146 ILogger]: Without dead ends: 189 [2019-05-23 11:17:47,763 INFO L146 ILogger]: 0 DeclaredPredicates, 172 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:17:47,763 INFO L146 ILogger]: Start minimizeSevpa. Operand 189 states. [2019-05-23 11:17:47,767 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 189 to 179. [2019-05-23 11:17:47,767 INFO L146 ILogger]: Start removeUnreachable. Operand 179 states. [2019-05-23 11:17:47,768 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 179 states to 179 states and 187 transitions. [2019-05-23 11:17:47,768 INFO L146 ILogger]: Start accepts. Automaton has 179 states and 187 transitions. Word has length 166 [2019-05-23 11:17:47,769 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:47,769 INFO L146 ILogger]: Abstraction has 179 states and 187 transitions. [2019-05-23 11:17:47,769 INFO L146 ILogger]: Interpolant automaton has 7 states. [2019-05-23 11:17:47,769 INFO L146 ILogger]: Start isEmpty. Operand 179 states and 187 transitions. [2019-05-23 11:17:47,771 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 174 [2019-05-23 11:17:47,771 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:47,771 INFO L146 ILogger]: trace histogram [5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:47,771 INFO L146 ILogger]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:47,772 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:47,772 INFO L146 ILogger]: Analyzing trace with hash -1450349614, now seen corresponding path program 7 times [2019-05-23 11:17:47,772 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:47,772 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:47,773 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:47,773 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:17:47,773 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:47,792 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:47,962 INFO L146 ILogger]: Checked inductivity of 145 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2019-05-23 11:17:47,963 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:47,963 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 11:17:47,974 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:17:48,016 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:48,017 INFO L146 ILogger]: Trace formula consists of 305 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:17:48,019 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:48,185 INFO L146 ILogger]: Checked inductivity of 145 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2019-05-23 11:17:48,211 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:48,212 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 13] total 16 [2019-05-23 11:17:48,212 INFO L146 ILogger]: Interpolant automaton has 16 states [2019-05-23 11:17:48,212 INFO L146 ILogger]: Constructing interpolant automaton starting with 16 interpolants. [2019-05-23 11:17:48,213 INFO L146 ILogger]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2019-05-23 11:17:48,213 INFO L146 ILogger]: Start difference. First operand 179 states and 187 transitions. Second operand 16 states. [2019-05-23 11:17:48,715 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:48,715 INFO L146 ILogger]: Finished difference Result 332 states and 349 transitions. [2019-05-23 11:17:48,715 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-05-23 11:17:48,715 INFO L146 ILogger]: Start accepts. Automaton has 16 states. Word has length 173 [2019-05-23 11:17:48,716 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:48,717 INFO L146 ILogger]: With dead ends: 332 [2019-05-23 11:17:48,717 INFO L146 ILogger]: Without dead ends: 203 [2019-05-23 11:17:48,719 INFO L146 ILogger]: 0 DeclaredPredicates, 189 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=195, Invalid=561, Unknown=0, NotChecked=0, Total=756 [2019-05-23 11:17:48,720 INFO L146 ILogger]: Start minimizeSevpa. Operand 203 states. [2019-05-23 11:17:48,723 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 203 to 193. [2019-05-23 11:17:48,723 INFO L146 ILogger]: Start removeUnreachable. Operand 193 states. [2019-05-23 11:17:48,724 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 193 states to 193 states and 201 transitions. [2019-05-23 11:17:48,724 INFO L146 ILogger]: Start accepts. Automaton has 193 states and 201 transitions. Word has length 173 [2019-05-23 11:17:48,724 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:48,725 INFO L146 ILogger]: Abstraction has 193 states and 201 transitions. [2019-05-23 11:17:48,725 INFO L146 ILogger]: Interpolant automaton has 16 states. [2019-05-23 11:17:48,725 INFO L146 ILogger]: Start isEmpty. Operand 193 states and 201 transitions. [2019-05-23 11:17:48,726 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 188 [2019-05-23 11:17:48,726 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:48,726 INFO L146 ILogger]: trace histogram [6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:48,726 INFO L146 ILogger]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:48,727 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:48,727 INFO L146 ILogger]: Analyzing trace with hash 845964184, now seen corresponding path program 8 times [2019-05-23 11:17:48,727 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:48,727 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:48,728 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:48,728 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:17:48,728 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:48,752 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:49,840 INFO L146 ILogger]: Checked inductivity of 189 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2019-05-23 11:17:49,841 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:49,841 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 11:17:49,852 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:17:49,908 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:17:49,908 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:49,909 INFO L146 ILogger]: Trace formula consists of 325 conjuncts, 14 conjunts are in the unsatisfiable core [2019-05-23 11:17:49,912 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:49,967 INFO L146 ILogger]: Checked inductivity of 189 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2019-05-23 11:17:49,987 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:49,987 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2019-05-23 11:17:49,988 INFO L146 ILogger]: Interpolant automaton has 17 states [2019-05-23 11:17:49,988 INFO L146 ILogger]: Constructing interpolant automaton starting with 17 interpolants. [2019-05-23 11:17:49,988 INFO L146 ILogger]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2019-05-23 11:17:49,988 INFO L146 ILogger]: Start difference. First operand 193 states and 201 transitions. Second operand 17 states. [2019-05-23 11:17:50,264 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:50,264 INFO L146 ILogger]: Finished difference Result 341 states and 357 transitions. [2019-05-23 11:17:50,264 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-05-23 11:17:50,264 INFO L146 ILogger]: Start accepts. Automaton has 17 states. Word has length 187 [2019-05-23 11:17:50,265 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:50,266 INFO L146 ILogger]: With dead ends: 341 [2019-05-23 11:17:50,266 INFO L146 ILogger]: Without dead ends: 205 [2019-05-23 11:17:50,267 INFO L146 ILogger]: 0 DeclaredPredicates, 213 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=263, Invalid=549, Unknown=0, NotChecked=0, Total=812 [2019-05-23 11:17:50,267 INFO L146 ILogger]: Start minimizeSevpa. Operand 205 states. [2019-05-23 11:17:50,271 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 205 to 200. [2019-05-23 11:17:50,272 INFO L146 ILogger]: Start removeUnreachable. Operand 200 states. [2019-05-23 11:17:50,272 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 200 states to 200 states and 208 transitions. [2019-05-23 11:17:50,275 INFO L146 ILogger]: Start accepts. Automaton has 200 states and 208 transitions. Word has length 187 [2019-05-23 11:17:50,275 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:50,275 INFO L146 ILogger]: Abstraction has 200 states and 208 transitions. [2019-05-23 11:17:50,275 INFO L146 ILogger]: Interpolant automaton has 17 states. [2019-05-23 11:17:50,275 INFO L146 ILogger]: Start isEmpty. Operand 200 states and 208 transitions. [2019-05-23 11:17:50,276 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 195 [2019-05-23 11:17:50,277 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:50,277 INFO L146 ILogger]: trace histogram [7, 7, 7, 7, 7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:50,277 INFO L146 ILogger]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:50,277 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:50,277 INFO L146 ILogger]: Analyzing trace with hash 2127145678, now seen corresponding path program 9 times [2019-05-23 11:17:50,278 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:50,278 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:50,279 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:50,279 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:17:50,279 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:50,307 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:50,760 INFO L146 ILogger]: Checked inductivity of 232 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2019-05-23 11:17:50,760 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:50,760 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 11:17:50,769 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:17:50,846 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-05-23 11:17:50,846 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:50,848 INFO L146 ILogger]: Trace formula consists of 275 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 11:17:50,851 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:51,344 INFO L146 ILogger]: Checked inductivity of 232 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked. [2019-05-23 11:17:51,363 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:51,363 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 7] total 22 [2019-05-23 11:17:51,364 INFO L146 ILogger]: Interpolant automaton has 22 states [2019-05-23 11:17:51,364 INFO L146 ILogger]: Constructing interpolant automaton starting with 22 interpolants. [2019-05-23 11:17:51,364 INFO L146 ILogger]: CoverageRelationStatistics Valid=94, Invalid=368, Unknown=0, NotChecked=0, Total=462 [2019-05-23 11:17:51,365 INFO L146 ILogger]: Start difference. First operand 200 states and 208 transitions. Second operand 22 states. [2019-05-23 11:17:52,216 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:52,216 INFO L146 ILogger]: Finished difference Result 360 states and 377 transitions. [2019-05-23 11:17:52,217 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2019-05-23 11:17:52,217 INFO L146 ILogger]: Start accepts. Automaton has 22 states. Word has length 194 [2019-05-23 11:17:52,217 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:52,219 INFO L146 ILogger]: With dead ends: 360 [2019-05-23 11:17:52,219 INFO L146 ILogger]: Without dead ends: 224 [2019-05-23 11:17:52,220 INFO L146 ILogger]: 0 DeclaredPredicates, 228 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=360, Invalid=1200, Unknown=0, NotChecked=0, Total=1560 [2019-05-23 11:17:52,220 INFO L146 ILogger]: Start minimizeSevpa. Operand 224 states. [2019-05-23 11:17:52,224 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 224 to 214. [2019-05-23 11:17:52,224 INFO L146 ILogger]: Start removeUnreachable. Operand 214 states. [2019-05-23 11:17:52,225 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 214 states to 214 states and 222 transitions. [2019-05-23 11:17:52,225 INFO L146 ILogger]: Start accepts. Automaton has 214 states and 222 transitions. Word has length 194 [2019-05-23 11:17:52,225 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:52,226 INFO L146 ILogger]: Abstraction has 214 states and 222 transitions. [2019-05-23 11:17:52,226 INFO L146 ILogger]: Interpolant automaton has 22 states. [2019-05-23 11:17:52,226 INFO L146 ILogger]: Start isEmpty. Operand 214 states and 222 transitions. [2019-05-23 11:17:52,227 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 209 [2019-05-23 11:17:52,227 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:52,227 INFO L146 ILogger]: trace histogram [8, 8, 8, 8, 8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:52,227 INFO L146 ILogger]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:52,228 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:52,228 INFO L146 ILogger]: Analyzing trace with hash -1176638086, now seen corresponding path program 10 times [2019-05-23 11:17:52,228 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:52,228 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:52,229 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:52,229 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:17:52,229 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:52,253 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:52,593 INFO L146 ILogger]: Checked inductivity of 297 backedges. 0 proven. 204 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2019-05-23 11:17:52,593 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:52,593 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 11:17:52,602 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:17:53,688 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:17:53,688 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:53,691 INFO L146 ILogger]: Trace formula consists of 355 conjuncts, 18 conjunts are in the unsatisfiable core [2019-05-23 11:17:53,694 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:53,772 INFO L146 ILogger]: Checked inductivity of 297 backedges. 0 proven. 204 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2019-05-23 11:17:53,797 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:53,798 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2019-05-23 11:17:53,799 INFO L146 ILogger]: Interpolant automaton has 21 states [2019-05-23 11:17:53,799 INFO L146 ILogger]: Constructing interpolant automaton starting with 21 interpolants. [2019-05-23 11:17:53,799 INFO L146 ILogger]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2019-05-23 11:17:53,800 INFO L146 ILogger]: Start difference. First operand 214 states and 222 transitions. Second operand 21 states. [2019-05-23 11:17:54,142 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:54,145 INFO L146 ILogger]: Finished difference Result 369 states and 385 transitions. [2019-05-23 11:17:54,145 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2019-05-23 11:17:54,145 INFO L146 ILogger]: Start accepts. Automaton has 21 states. Word has length 208 [2019-05-23 11:17:54,146 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:54,147 INFO L146 ILogger]: With dead ends: 369 [2019-05-23 11:17:54,147 INFO L146 ILogger]: Without dead ends: 226 [2019-05-23 11:17:54,148 INFO L146 ILogger]: 0 DeclaredPredicates, 242 GetRequests, 207 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 11:17:54,149 INFO L146 ILogger]: Start minimizeSevpa. Operand 226 states. [2019-05-23 11:17:54,153 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 226 to 221. [2019-05-23 11:17:54,153 INFO L146 ILogger]: Start removeUnreachable. Operand 221 states. [2019-05-23 11:17:54,154 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 221 states to 221 states and 229 transitions. [2019-05-23 11:17:54,154 INFO L146 ILogger]: Start accepts. Automaton has 221 states and 229 transitions. Word has length 208 [2019-05-23 11:17:54,154 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:54,154 INFO L146 ILogger]: Abstraction has 221 states and 229 transitions. [2019-05-23 11:17:54,154 INFO L146 ILogger]: Interpolant automaton has 21 states. [2019-05-23 11:17:54,155 INFO L146 ILogger]: Start isEmpty. Operand 221 states and 229 transitions. [2019-05-23 11:17:54,156 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 216 [2019-05-23 11:17:54,156 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:54,157 INFO L146 ILogger]: trace histogram [9, 9, 9, 9, 9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:54,157 INFO L146 ILogger]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:54,157 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:54,158 INFO L146 ILogger]: Analyzing trace with hash 815293444, now seen corresponding path program 11 times [2019-05-23 11:17:54,158 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:54,158 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:54,159 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:54,160 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:17:54,160 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:54,185 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:55,249 INFO L146 ILogger]: Checked inductivity of 354 backedges. 0 proven. 261 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2019-05-23 11:17:55,250 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:55,250 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 11:17:55,258 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:18:07,770 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2019-05-23 11:18:07,771 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:07,780 INFO L146 ILogger]: Trace formula consists of 365 conjuncts, 8 conjunts are in the unsatisfiable core [2019-05-23 11:18:07,784 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:18:07,903 INFO L146 ILogger]: Checked inductivity of 354 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2019-05-23 11:18:07,926 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:18:07,926 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 9] total 28 [2019-05-23 11:18:07,926 INFO L146 ILogger]: Interpolant automaton has 28 states [2019-05-23 11:18:07,927 INFO L146 ILogger]: Constructing interpolant automaton starting with 28 interpolants. [2019-05-23 11:18:07,927 INFO L146 ILogger]: CoverageRelationStatistics Valid=143, Invalid=613, Unknown=0, NotChecked=0, Total=756 [2019-05-23 11:18:07,927 INFO L146 ILogger]: Start difference. First operand 221 states and 229 transitions. Second operand 28 states. [2019-05-23 11:18:09,014 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:18:09,014 INFO L146 ILogger]: Finished difference Result 388 states and 405 transitions. [2019-05-23 11:18:09,014 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2019-05-23 11:18:09,015 INFO L146 ILogger]: Start accepts. Automaton has 28 states. Word has length 215 [2019-05-23 11:18:09,015 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:18:09,016 INFO L146 ILogger]: With dead ends: 388 [2019-05-23 11:18:09,017 INFO L146 ILogger]: Without dead ends: 245 [2019-05-23 11:18:09,018 INFO L146 ILogger]: 0 DeclaredPredicates, 259 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 473 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=575, Invalid=2077, Unknown=0, NotChecked=0, Total=2652 [2019-05-23 11:18:09,018 INFO L146 ILogger]: Start minimizeSevpa. Operand 245 states. [2019-05-23 11:18:09,022 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 245 to 235. [2019-05-23 11:18:09,022 INFO L146 ILogger]: Start removeUnreachable. Operand 235 states. [2019-05-23 11:18:09,023 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 235 states to 235 states and 243 transitions. [2019-05-23 11:18:09,023 INFO L146 ILogger]: Start accepts. Automaton has 235 states and 243 transitions. Word has length 215 [2019-05-23 11:18:09,023 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:18:09,024 INFO L146 ILogger]: Abstraction has 235 states and 243 transitions. [2019-05-23 11:18:09,024 INFO L146 ILogger]: Interpolant automaton has 28 states. [2019-05-23 11:18:09,024 INFO L146 ILogger]: Start isEmpty. Operand 235 states and 243 transitions. [2019-05-23 11:18:09,024 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 230 [2019-05-23 11:18:09,025 INFO L146 ILogger]: Found error trace [2019-05-23 11:18:09,025 INFO L146 ILogger]: trace histogram [10, 10, 10, 10, 10, 10, 10, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:18:09,025 INFO L146 ILogger]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:18:09,025 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:18:09,025 INFO L146 ILogger]: Analyzing trace with hash -1353033768, now seen corresponding path program 12 times [2019-05-23 11:18:09,025 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:18:09,026 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:18:09,026 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:09,026 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:18:09,026 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:09,052 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:09,505 INFO L146 ILogger]: Checked inductivity of 440 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2019-05-23 11:18:09,505 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:18:09,505 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 11:18:09,513 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:18:09,696 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2019-05-23 11:18:09,697 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:09,698 INFO L146 ILogger]: Trace formula consists of 295 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 11:18:09,700 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:18:09,882 INFO L146 ILogger]: Checked inductivity of 440 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 431 trivial. 0 not checked. [2019-05-23 11:18:09,901 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:18:09,901 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 7] total 28 [2019-05-23 11:18:09,902 INFO L146 ILogger]: Interpolant automaton has 28 states [2019-05-23 11:18:09,902 INFO L146 ILogger]: Constructing interpolant automaton starting with 28 interpolants. [2019-05-23 11:18:09,903 INFO L146 ILogger]: CoverageRelationStatistics Valid=157, Invalid=599, Unknown=0, NotChecked=0, Total=756 [2019-05-23 11:18:09,903 INFO L146 ILogger]: Start difference. First operand 235 states and 243 transitions. Second operand 28 states. [2019-05-23 11:18:10,838 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:18:10,839 INFO L146 ILogger]: Finished difference Result 409 states and 426 transitions. [2019-05-23 11:18:10,839 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2019-05-23 11:18:10,839 INFO L146 ILogger]: Start accepts. Automaton has 28 states. Word has length 229 [2019-05-23 11:18:10,840 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:18:10,841 INFO L146 ILogger]: With dead ends: 409 [2019-05-23 11:18:10,841 INFO L146 ILogger]: Without dead ends: 259 [2019-05-23 11:18:10,843 INFO L146 ILogger]: 0 DeclaredPredicates, 275 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 463 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=645, Invalid=2007, Unknown=0, NotChecked=0, Total=2652 [2019-05-23 11:18:10,843 INFO L146 ILogger]: Start minimizeSevpa. Operand 259 states. [2019-05-23 11:18:10,847 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 259 to 249. [2019-05-23 11:18:10,848 INFO L146 ILogger]: Start removeUnreachable. Operand 249 states. [2019-05-23 11:18:10,848 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 249 states to 249 states and 257 transitions. [2019-05-23 11:18:10,849 INFO L146 ILogger]: Start accepts. Automaton has 249 states and 257 transitions. Word has length 229 [2019-05-23 11:18:10,849 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:18:10,849 INFO L146 ILogger]: Abstraction has 249 states and 257 transitions. [2019-05-23 11:18:10,849 INFO L146 ILogger]: Interpolant automaton has 28 states. [2019-05-23 11:18:10,849 INFO L146 ILogger]: Start isEmpty. Operand 249 states and 257 transitions. [2019-05-23 11:18:10,850 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 244 [2019-05-23 11:18:10,851 INFO L146 ILogger]: Found error trace [2019-05-23 11:18:10,851 INFO L146 ILogger]: trace histogram [11, 11, 11, 11, 11, 11, 11, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:18:10,851 INFO L146 ILogger]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:18:10,851 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:18:10,851 INFO L146 ILogger]: Analyzing trace with hash -1625357898, now seen corresponding path program 13 times [2019-05-23 11:18:10,851 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:18:10,852 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:18:10,852 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:10,852 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:18:10,852 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:10,877 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:11,318 INFO L146 ILogger]: Checked inductivity of 526 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2019-05-23 11:18:11,318 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:18:11,318 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:18:11,327 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:18:11,381 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:11,382 INFO L146 ILogger]: Trace formula consists of 405 conjuncts, 24 conjunts are in the unsatisfiable core [2019-05-23 11:18:11,385 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:18:11,498 INFO L146 ILogger]: Checked inductivity of 526 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2019-05-23 11:18:11,530 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:18:11,530 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 27 [2019-05-23 11:18:11,531 INFO L146 ILogger]: Interpolant automaton has 27 states [2019-05-23 11:18:11,531 INFO L146 ILogger]: Constructing interpolant automaton starting with 27 interpolants. [2019-05-23 11:18:11,532 INFO L146 ILogger]: CoverageRelationStatistics Valid=195, Invalid=507, Unknown=0, NotChecked=0, Total=702 [2019-05-23 11:18:11,532 INFO L146 ILogger]: Start difference. First operand 249 states and 257 transitions. Second operand 27 states. [2019-05-23 11:18:12,107 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:18:12,107 INFO L146 ILogger]: Finished difference Result 418 states and 434 transitions. [2019-05-23 11:18:12,107 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2019-05-23 11:18:12,107 INFO L146 ILogger]: Start accepts. Automaton has 27 states. Word has length 243 [2019-05-23 11:18:12,108 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:18:12,109 INFO L146 ILogger]: With dead ends: 418 [2019-05-23 11:18:12,109 INFO L146 ILogger]: Without dead ends: 261 [2019-05-23 11:18:12,110 INFO L146 ILogger]: 0 DeclaredPredicates, 289 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 439 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=748, Invalid=1604, Unknown=0, NotChecked=0, Total=2352 [2019-05-23 11:18:12,110 INFO L146 ILogger]: Start minimizeSevpa. Operand 261 states. [2019-05-23 11:18:12,114 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 261 to 256. [2019-05-23 11:18:12,114 INFO L146 ILogger]: Start removeUnreachable. Operand 256 states. [2019-05-23 11:18:12,115 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 256 states to 256 states and 264 transitions. [2019-05-23 11:18:12,115 INFO L146 ILogger]: Start accepts. Automaton has 256 states and 264 transitions. Word has length 243 [2019-05-23 11:18:12,116 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:18:12,116 INFO L146 ILogger]: Abstraction has 256 states and 264 transitions. [2019-05-23 11:18:12,116 INFO L146 ILogger]: Interpolant automaton has 27 states. [2019-05-23 11:18:12,116 INFO L146 ILogger]: Start isEmpty. Operand 256 states and 264 transitions. [2019-05-23 11:18:12,117 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 251 [2019-05-23 11:18:12,117 INFO L146 ILogger]: Found error trace [2019-05-23 11:18:12,118 INFO L146 ILogger]: trace histogram [12, 12, 12, 12, 12, 12, 12, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:18:12,118 INFO L146 ILogger]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:18:12,118 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:18:12,118 INFO L146 ILogger]: Analyzing trace with hash 741682924, now seen corresponding path program 14 times [2019-05-23 11:18:12,119 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:18:12,119 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:18:12,119 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:12,119 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:18:12,120 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:12,142 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:12,974 INFO L146 ILogger]: Checked inductivity of 604 backedges. 0 proven. 474 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2019-05-23 11:18:12,975 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:18:12,975 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:18:12,983 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:18:13,049 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:18:13,049 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:13,051 INFO L146 ILogger]: Trace formula consists of 415 conjuncts, 26 conjunts are in the unsatisfiable core [2019-05-23 11:18:13,054 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:18:13,131 INFO L146 ILogger]: Checked inductivity of 604 backedges. 0 proven. 474 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2019-05-23 11:18:13,150 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:18:13,150 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 29 [2019-05-23 11:18:13,151 INFO L146 ILogger]: Interpolant automaton has 29 states [2019-05-23 11:18:13,151 INFO L146 ILogger]: Constructing interpolant automaton starting with 29 interpolants. [2019-05-23 11:18:13,152 INFO L146 ILogger]: CoverageRelationStatistics Valid=224, Invalid=588, Unknown=0, NotChecked=0, Total=812 [2019-05-23 11:18:13,152 INFO L146 ILogger]: Start difference. First operand 256 states and 264 transitions. Second operand 29 states. [2019-05-23 11:18:13,770 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:18:13,770 INFO L146 ILogger]: Finished difference Result 425 states and 441 transitions. [2019-05-23 11:18:13,778 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2019-05-23 11:18:13,778 INFO L146 ILogger]: Start accepts. Automaton has 29 states. Word has length 250 [2019-05-23 11:18:13,778 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:18:13,780 INFO L146 ILogger]: With dead ends: 425 [2019-05-23 11:18:13,780 INFO L146 ILogger]: Without dead ends: 268 [2019-05-23 11:18:13,781 INFO L146 ILogger]: 0 DeclaredPredicates, 300 GetRequests, 249 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 516 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=875, Invalid=1881, Unknown=0, NotChecked=0, Total=2756 [2019-05-23 11:18:13,782 INFO L146 ILogger]: Start minimizeSevpa. Operand 268 states. [2019-05-23 11:18:13,786 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 268 to 263. [2019-05-23 11:18:13,786 INFO L146 ILogger]: Start removeUnreachable. Operand 263 states. [2019-05-23 11:18:13,787 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 263 states to 263 states and 271 transitions. [2019-05-23 11:18:13,787 INFO L146 ILogger]: Start accepts. Automaton has 263 states and 271 transitions. Word has length 250 [2019-05-23 11:18:13,787 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:18:13,788 INFO L146 ILogger]: Abstraction has 263 states and 271 transitions. [2019-05-23 11:18:13,788 INFO L146 ILogger]: Interpolant automaton has 29 states. [2019-05-23 11:18:13,788 INFO L146 ILogger]: Start isEmpty. Operand 263 states and 271 transitions. [2019-05-23 11:18:13,789 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 258 [2019-05-23 11:18:13,789 INFO L146 ILogger]: Found error trace [2019-05-23 11:18:13,790 INFO L146 ILogger]: trace histogram [13, 13, 13, 13, 13, 13, 13, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:18:13,790 INFO L146 ILogger]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:18:13,790 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:18:13,791 INFO L146 ILogger]: Analyzing trace with hash 1489098998, now seen corresponding path program 15 times [2019-05-23 11:18:13,791 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:18:13,791 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:18:13,792 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:13,792 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:18:13,792 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:13,816 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:14,396 INFO L146 ILogger]: Checked inductivity of 689 backedges. 0 proven. 559 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2019-05-23 11:18:14,396 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:18:14,396 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:18:14,405 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:18:14,466 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-05-23 11:18:14,467 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:14,468 INFO L146 ILogger]: Trace formula consists of 275 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 11:18:14,472 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:18:15,854 INFO L146 ILogger]: Checked inductivity of 689 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 680 trivial. 0 not checked. [2019-05-23 11:18:15,873 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:18:15,873 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 7] total 34 [2019-05-23 11:18:15,874 INFO L146 ILogger]: Interpolant automaton has 34 states [2019-05-23 11:18:15,874 INFO L146 ILogger]: Constructing interpolant automaton starting with 34 interpolants. [2019-05-23 11:18:15,875 INFO L146 ILogger]: CoverageRelationStatistics Valid=238, Invalid=884, Unknown=0, NotChecked=0, Total=1122 [2019-05-23 11:18:15,875 INFO L146 ILogger]: Start difference. First operand 263 states and 271 transitions. Second operand 34 states. [2019-05-23 11:18:17,958 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:18:17,959 INFO L146 ILogger]: Finished difference Result 444 states and 461 transitions. [2019-05-23 11:18:17,959 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2019-05-23 11:18:17,959 INFO L146 ILogger]: Start accepts. Automaton has 34 states. Word has length 257 [2019-05-23 11:18:17,960 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:18:17,961 INFO L146 ILogger]: With dead ends: 444 [2019-05-23 11:18:17,961 INFO L146 ILogger]: Without dead ends: 287 [2019-05-23 11:18:17,963 INFO L146 ILogger]: 0 DeclaredPredicates, 315 GetRequests, 253 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 718 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1020, Invalid=3012, Unknown=0, NotChecked=0, Total=4032 [2019-05-23 11:18:17,964 INFO L146 ILogger]: Start minimizeSevpa. Operand 287 states. [2019-05-23 11:18:17,967 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 287 to 277. [2019-05-23 11:18:17,968 INFO L146 ILogger]: Start removeUnreachable. Operand 277 states. [2019-05-23 11:18:17,968 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 277 states to 277 states and 285 transitions. [2019-05-23 11:18:17,969 INFO L146 ILogger]: Start accepts. Automaton has 277 states and 285 transitions. Word has length 257 [2019-05-23 11:18:17,969 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:18:17,969 INFO L146 ILogger]: Abstraction has 277 states and 285 transitions. [2019-05-23 11:18:17,969 INFO L146 ILogger]: Interpolant automaton has 34 states. [2019-05-23 11:18:17,969 INFO L146 ILogger]: Start isEmpty. Operand 277 states and 285 transitions. [2019-05-23 11:18:17,970 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 272 [2019-05-23 11:18:17,971 INFO L146 ILogger]: Found error trace [2019-05-23 11:18:17,971 INFO L146 ILogger]: trace histogram [14, 14, 14, 14, 14, 14, 14, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:18:17,971 INFO L146 ILogger]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:18:17,971 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:18:17,972 INFO L146 ILogger]: Analyzing trace with hash -1283587585, now seen corresponding path program 16 times [2019-05-23 11:18:17,972 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:18:17,972 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:18:17,972 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:17,973 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:18:17,973 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:17,994 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:18,510 INFO L146 ILogger]: Checked inductivity of 796 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2019-05-23 11:18:18,511 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:18:18,511 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:18:18,521 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:18:22,097 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:18:22,097 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:22,104 INFO L146 ILogger]: Trace formula consists of 445 conjuncts, 30 conjunts are in the unsatisfiable core [2019-05-23 11:18:22,106 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:18:22,187 INFO L146 ILogger]: Checked inductivity of 796 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2019-05-23 11:18:22,207 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:18:22,208 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 33 [2019-05-23 11:18:22,208 INFO L146 ILogger]: Interpolant automaton has 33 states [2019-05-23 11:18:22,209 INFO L146 ILogger]: Constructing interpolant automaton starting with 33 interpolants. [2019-05-23 11:18:22,209 INFO L146 ILogger]: CoverageRelationStatistics Valid=288, Invalid=768, Unknown=0, NotChecked=0, Total=1056 [2019-05-23 11:18:22,209 INFO L146 ILogger]: Start difference. First operand 277 states and 285 transitions. Second operand 33 states. [2019-05-23 11:18:23,130 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:18:23,130 INFO L146 ILogger]: Finished difference Result 453 states and 469 transitions. [2019-05-23 11:18:23,130 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2019-05-23 11:18:23,130 INFO L146 ILogger]: Start accepts. Automaton has 33 states. Word has length 271 [2019-05-23 11:18:23,131 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:18:23,132 INFO L146 ILogger]: With dead ends: 453 [2019-05-23 11:18:23,132 INFO L146 ILogger]: Without dead ends: 289 [2019-05-23 11:18:23,134 INFO L146 ILogger]: 0 DeclaredPredicates, 329 GetRequests, 270 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 688 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1159, Invalid=2501, Unknown=0, NotChecked=0, Total=3660 [2019-05-23 11:18:23,135 INFO L146 ILogger]: Start minimizeSevpa. Operand 289 states. [2019-05-23 11:18:23,138 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 289 to 284. [2019-05-23 11:18:23,139 INFO L146 ILogger]: Start removeUnreachable. Operand 284 states. [2019-05-23 11:18:23,139 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 284 states to 284 states and 292 transitions. [2019-05-23 11:18:23,139 INFO L146 ILogger]: Start accepts. Automaton has 284 states and 292 transitions. Word has length 271 [2019-05-23 11:18:23,140 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:18:23,140 INFO L146 ILogger]: Abstraction has 284 states and 292 transitions. [2019-05-23 11:18:23,140 INFO L146 ILogger]: Interpolant automaton has 33 states. [2019-05-23 11:18:23,140 INFO L146 ILogger]: Start isEmpty. Operand 284 states and 292 transitions. [2019-05-23 11:18:23,141 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 279 [2019-05-23 11:18:23,141 INFO L146 ILogger]: Found error trace [2019-05-23 11:18:23,142 INFO L146 ILogger]: trace histogram [15, 15, 15, 15, 15, 15, 15, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:18:23,142 INFO L146 ILogger]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:18:23,142 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:18:23,142 INFO L146 ILogger]: Analyzing trace with hash 630776373, now seen corresponding path program 17 times [2019-05-23 11:18:23,142 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:18:23,143 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:18:23,143 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:23,143 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:18:23,143 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:23,166 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:23,684 INFO L146 ILogger]: Checked inductivity of 895 backedges. 0 proven. 750 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2019-05-23 11:18:23,685 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:18:23,685 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:18:23,693 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1