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/reducercommutativity/rangesum10_false-unreach-call_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-7aa59a0 [2019-05-23 11:22:33,618 INFO L146 ILogger]: Resetting all preferences to default values... [2019-05-23 11:22:33,620 INFO L146 ILogger]: Resetting UltimateCore preferences to default values [2019-05-23 11:22:33,635 INFO L146 ILogger]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-05-23 11:22:33,636 INFO L146 ILogger]: Resetting Boogie Preprocessor preferences to default values [2019-05-23 11:22:33,637 INFO L146 ILogger]: Resetting Boogie Procedure Inliner preferences to default values [2019-05-23 11:22:33,638 INFO L146 ILogger]: Resetting Abstract Interpretation preferences to default values [2019-05-23 11:22:33,640 INFO L146 ILogger]: Resetting LassoRanker preferences to default values [2019-05-23 11:22:33,642 INFO L146 ILogger]: Resetting Reaching Definitions preferences to default values [2019-05-23 11:22:33,643 INFO L146 ILogger]: Resetting SyntaxChecker preferences to default values [2019-05-23 11:22:33,644 INFO L146 ILogger]: Büchi Program Product provides no preferences, ignoring... [2019-05-23 11:22:33,644 INFO L146 ILogger]: Resetting LTL2Aut preferences to default values [2019-05-23 11:22:33,645 INFO L146 ILogger]: Resetting PEA to Boogie preferences to default values [2019-05-23 11:22:33,646 INFO L146 ILogger]: Resetting BlockEncodingV2 preferences to default values [2019-05-23 11:22:33,647 INFO L146 ILogger]: Resetting ChcToBoogie preferences to default values [2019-05-23 11:22:33,648 INFO L146 ILogger]: Resetting AutomataScriptInterpreter preferences to default values [2019-05-23 11:22:33,649 INFO L146 ILogger]: Resetting BuchiAutomizer preferences to default values [2019-05-23 11:22:33,651 INFO L146 ILogger]: Resetting CACSL2BoogieTranslator preferences to default values [2019-05-23 11:22:33,653 INFO L146 ILogger]: Resetting CodeCheck preferences to default values [2019-05-23 11:22:33,655 INFO L146 ILogger]: Resetting InvariantSynthesis preferences to default values [2019-05-23 11:22:33,656 INFO L146 ILogger]: Resetting RCFGBuilder preferences to default values [2019-05-23 11:22:33,658 INFO L146 ILogger]: Resetting TraceAbstraction preferences to default values [2019-05-23 11:22:33,660 INFO L146 ILogger]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-05-23 11:22:33,661 INFO L146 ILogger]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-05-23 11:22:33,664 INFO L146 ILogger]: Resetting TreeAutomizer preferences to default values [2019-05-23 11:22:33,665 INFO L146 ILogger]: Resetting IcfgToChc preferences to default values [2019-05-23 11:22:33,666 INFO L146 ILogger]: Resetting IcfgTransformer preferences to default values [2019-05-23 11:22:33,667 INFO L146 ILogger]: ReqToTest provides no preferences, ignoring... [2019-05-23 11:22:33,668 INFO L146 ILogger]: Resetting Boogie Printer preferences to default values [2019-05-23 11:22:33,668 INFO L146 ILogger]: Resetting ChcSmtPrinter preferences to default values [2019-05-23 11:22:33,669 INFO L146 ILogger]: Resetting ReqPrinter preferences to default values [2019-05-23 11:22:33,671 INFO L146 ILogger]: Resetting Witness Printer preferences to default values [2019-05-23 11:22:33,672 INFO L146 ILogger]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-05-23 11:22:33,672 INFO L146 ILogger]: Resetting CDTParser preferences to default values [2019-05-23 11:22:33,673 INFO L146 ILogger]: AutomataScriptParser provides no preferences, ignoring... [2019-05-23 11:22:33,673 INFO L146 ILogger]: ReqParser provides no preferences, ignoring... [2019-05-23 11:22:33,673 INFO L146 ILogger]: Resetting SmtParser preferences to default values [2019-05-23 11:22:33,676 INFO L146 ILogger]: Resetting Witness Parser preferences to default values [2019-05-23 11:22:33,677 INFO L146 ILogger]: Finished resetting all preferences to default values... [2019-05-23 11:22:33,677 INFO L146 ILogger]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-05-23 11:22:33,701 INFO L146 ILogger]: Loading preferences was successful [2019-05-23 11:22:33,701 INFO L146 ILogger]: Preferences different from defaults after loading the file: [2019-05-23 11:22:33,702 INFO L146 ILogger]: Preferences of BlockEncodingV2 differ from their defaults: [2019-05-23 11:22:33,702 INFO L146 ILogger]: * Create parallel compositions if possible=false [2019-05-23 11:22:33,703 INFO L146 ILogger]: * Use SBE=true [2019-05-23 11:22:33,703 INFO L146 ILogger]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-05-23 11:22:33,703 INFO L146 ILogger]: * sizeof long=4 [2019-05-23 11:22:33,703 INFO L146 ILogger]: * Overapproximate operations on floating types=true [2019-05-23 11:22:33,703 INFO L146 ILogger]: * sizeof POINTER=4 [2019-05-23 11:22:33,704 INFO L146 ILogger]: * Check division by zero=IGNORE [2019-05-23 11:22:33,704 INFO L146 ILogger]: * Pointer to allocated memory at dereference=IGNORE [2019-05-23 11:22:33,704 INFO L146 ILogger]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-05-23 11:22:33,704 INFO L146 ILogger]: * Check array bounds for arrays that are off heap=IGNORE [2019-05-23 11:22:33,704 INFO L146 ILogger]: * sizeof long double=12 [2019-05-23 11:22:33,705 INFO L146 ILogger]: * Check if freed pointer was valid=false [2019-05-23 11:22:33,705 INFO L146 ILogger]: * Use constant arrays=true [2019-05-23 11:22:33,705 INFO L146 ILogger]: * Pointer base address is valid at dereference=IGNORE [2019-05-23 11:22:33,705 INFO L146 ILogger]: Preferences of RCFGBuilder differ from their defaults: [2019-05-23 11:22:33,705 INFO L146 ILogger]: * Size of a code block=SequenceOfStatements [2019-05-23 11:22:33,706 INFO L146 ILogger]: * To the following directory=./dump/ [2019-05-23 11:22:33,706 INFO L146 ILogger]: * SMT solver=External_DefaultMode [2019-05-23 11:22:33,706 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-05-23 11:22:33,706 INFO L146 ILogger]: Preferences of TraceAbstraction differ from their defaults: [2019-05-23 11:22:33,706 INFO L146 ILogger]: * Compute Interpolants along a Counterexample=FPandBP [2019-05-23 11:22:33,707 INFO L146 ILogger]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-05-23 11:22:33,707 INFO L146 ILogger]: * Trace refinement strategy=CAMEL [2019-05-23 11:22:33,707 INFO L146 ILogger]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-05-23 11:22:33,707 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-05-23 11:22:33,707 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 11:22:33,746 INFO L146 ILogger]: Repository-Root is: /tmp [2019-05-23 11:22:33,766 INFO L146 ILogger]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-05-23 11:22:33,771 INFO L146 ILogger]: [Toolchain 1]: Toolchain selected. [2019-05-23 11:22:33,772 INFO L146 ILogger]: Initializing CDTParser... [2019-05-23 11:22:33,773 INFO L146 ILogger]: CDTParser initialized [2019-05-23 11:22:33,774 INFO L146 ILogger]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/reducercommutativity/rangesum10_false-unreach-call_true-termination.i [2019-05-23 11:22:33,837 INFO L146 ILogger]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e3a0eef8b/d6bf2838f074488ebf929faf9e8ce575/FLAGac659875c [2019-05-23 11:22:34,290 INFO L146 ILogger]: Found 1 translation units. [2019-05-23 11:22:34,291 INFO L146 ILogger]: Scanning /storage/repos/svcomp/c/reducercommutativity/rangesum10_false-unreach-call_true-termination.i [2019-05-23 11:22:34,305 INFO L146 ILogger]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e3a0eef8b/d6bf2838f074488ebf929faf9e8ce575/FLAGac659875c [2019-05-23 11:22:34,667 INFO L146 ILogger]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e3a0eef8b/d6bf2838f074488ebf929faf9e8ce575 [2019-05-23 11:22:34,676 INFO L146 ILogger]: ####################### [Toolchain 1] ####################### [2019-05-23 11:22:34,678 INFO L146 ILogger]: Walking toolchain with 5 elements. [2019-05-23 11:22:34,679 INFO L146 ILogger]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-05-23 11:22:34,679 INFO L146 ILogger]: Initializing CACSL2BoogieTranslator... [2019-05-23 11:22:34,683 INFO L146 ILogger]: CACSL2BoogieTranslator initialized [2019-05-23 11:22:34,684 INFO L146 ILogger]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:22:34" (1/1) ... [2019-05-23 11:22:34,686 INFO L146 ILogger]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17b444b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:22:34, skipping insertion in model container [2019-05-23 11:22:34,687 INFO L146 ILogger]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:22:34" (1/1) ... [2019-05-23 11:22:34,694 INFO L146 ILogger]: Starting translation in SV-COMP mode [2019-05-23 11:22:34,719 INFO L146 ILogger]: Built tables and reachable declarations [2019-05-23 11:22:34,960 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:22:34,977 INFO L146 ILogger]: Completed pre-run [2019-05-23 11:22:35,021 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:22:35,038 INFO L146 ILogger]: Completed translation [2019-05-23 11:22:35,039 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:22:35 WrapperNode [2019-05-23 11:22:35,039 INFO L146 ILogger]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-05-23 11:22:35,040 INFO L146 ILogger]: ------------------------Boogie Procedure Inliner---------------------------- [2019-05-23 11:22:35,040 INFO L146 ILogger]: Initializing Boogie Procedure Inliner... [2019-05-23 11:22:35,040 INFO L146 ILogger]: Boogie Procedure Inliner initialized [2019-05-23 11:22:35,052 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:22:35" (1/1) ... [2019-05-23 11:22:35,062 INFO L146 ILogger]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:22:35" (1/1) ... [2019-05-23 11:22:35,098 INFO L146 ILogger]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-05-23 11:22:35,101 INFO L146 ILogger]: ------------------------Boogie Preprocessor---------------------------- [2019-05-23 11:22:35,101 INFO L146 ILogger]: Initializing Boogie Preprocessor... [2019-05-23 11:22:35,101 INFO L146 ILogger]: Boogie Preprocessor initialized [2019-05-23 11:22:35,198 INFO L146 ILogger]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:22:35" (1/1) ... [2019-05-23 11:22:35,198 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:22:35" (1/1) ... [2019-05-23 11:22:35,205 INFO L146 ILogger]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:22:35" (1/1) ... [2019-05-23 11:22:35,205 INFO L146 ILogger]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:22:35" (1/1) ... [2019-05-23 11:22:35,226 INFO L146 ILogger]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:22:35" (1/1) ... [2019-05-23 11:22:35,237 INFO L146 ILogger]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:22:35" (1/1) ... [2019-05-23 11:22:35,240 INFO L146 ILogger]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:22:35" (1/1) ... [2019-05-23 11:22:35,242 INFO L146 ILogger]: ------------------------ END Boogie Preprocessor---------------------------- [2019-05-23 11:22:35,243 INFO L146 ILogger]: ------------------------RCFGBuilder---------------------------- [2019-05-23 11:22:35,243 INFO L146 ILogger]: Initializing RCFGBuilder... [2019-05-23 11:22:35,243 INFO L146 ILogger]: RCFGBuilder initialized [2019-05-23 11:22:35,244 INFO L146 ILogger]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:22:35" (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 11:22:35,310 INFO L146 ILogger]: Found specification of procedure write~int [2019-05-23 11:22:35,310 INFO L146 ILogger]: Found specification of procedure ULTIMATE.start [2019-05-23 11:22:35,310 INFO L146 ILogger]: Found implementation of procedure ULTIMATE.start [2019-05-23 11:22:35,310 INFO L146 ILogger]: Found specification of procedure read~int [2019-05-23 11:22:35,310 INFO L146 ILogger]: Found specification of procedure #Ultimate.allocOnStack [2019-05-23 11:22:35,310 INFO L146 ILogger]: Found specification of procedure ULTIMATE.dealloc [2019-05-23 11:22:36,069 INFO L146 ILogger]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-05-23 11:22:36,069 INFO L146 ILogger]: Removed 17 assume(true) statements. [2019-05-23 11:22:36,070 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:22:36 BoogieIcfgContainer [2019-05-23 11:22:36,071 INFO L146 ILogger]: ------------------------ END RCFGBuilder---------------------------- [2019-05-23 11:22:36,071 INFO L146 ILogger]: ------------------------TraceAbstraction---------------------------- [2019-05-23 11:22:36,072 INFO L146 ILogger]: Initializing TraceAbstraction... [2019-05-23 11:22:36,075 INFO L146 ILogger]: TraceAbstraction initialized [2019-05-23 11:22:36,075 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.05 11:22:34" (1/3) ... [2019-05-23 11:22:36,076 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d775439 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:22:36, skipping insertion in model container [2019-05-23 11:22:36,076 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:22:35" (2/3) ... [2019-05-23 11:22:36,076 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d775439 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:22:36, skipping insertion in model container [2019-05-23 11:22:36,077 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:22:36" (3/3) ... [2019-05-23 11:22:36,078 INFO L146 ILogger]: Analyzing ICFG rangesum10_false-unreach-call_true-termination.i [2019-05-23 11:22:36,088 INFO L146 ILogger]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-05-23 11:22:36,096 INFO L146 ILogger]: Appying trace abstraction to program that has 1 error locations. [2019-05-23 11:22:36,110 INFO L146 ILogger]: Starting to check reachability of 1 error locations. [2019-05-23 11:22:36,140 INFO L146 ILogger]: Using default assertion order modulation [2019-05-23 11:22:36,140 INFO L146 ILogger]: Interprodecural is true [2019-05-23 11:22:36,140 INFO L146 ILogger]: Hoare is true [2019-05-23 11:22:36,141 INFO L146 ILogger]: Compute interpolants for FPandBP [2019-05-23 11:22:36,141 INFO L146 ILogger]: Backedges is STRAIGHT_LINE [2019-05-23 11:22:36,141 INFO L146 ILogger]: Determinization is PREDICATE_ABSTRACTION [2019-05-23 11:22:36,141 INFO L146 ILogger]: Difference is false [2019-05-23 11:22:36,141 INFO L146 ILogger]: Minimize is MINIMIZE_SEVPA [2019-05-23 11:22:36,141 INFO L146 ILogger]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-05-23 11:22:36,159 INFO L146 ILogger]: Start isEmpty. Operand 124 states. [2019-05-23 11:22:36,168 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 79 [2019-05-23 11:22:36,168 INFO L146 ILogger]: Found error trace [2019-05-23 11:22:36,169 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:22:36,172 INFO L146 ILogger]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:22:36,177 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:22:36,178 INFO L146 ILogger]: Analyzing trace with hash -924562874, now seen corresponding path program 1 times [2019-05-23 11:22:36,180 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:22:36,180 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:22:36,225 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:36,225 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:22:36,225 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:36,275 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:22:36,374 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 11:22:36,377 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:22:36,378 INFO L146 ILogger]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-05-23 11:22:36,383 INFO L146 ILogger]: Interpolant automaton has 3 states [2019-05-23 11:22:36,398 INFO L146 ILogger]: Constructing interpolant automaton starting with 3 interpolants. [2019-05-23 11:22:36,399 INFO L146 ILogger]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-05-23 11:22:36,402 INFO L146 ILogger]: Start difference. First operand 124 states. Second operand 3 states. [2019-05-23 11:22:36,551 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:22:36,551 INFO L146 ILogger]: Finished difference Result 237 states and 269 transitions. [2019-05-23 11:22:36,552 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-05-23 11:22:36,553 INFO L146 ILogger]: Start accepts. Automaton has 3 states. Word has length 78 [2019-05-23 11:22:36,554 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:22:36,565 INFO L146 ILogger]: With dead ends: 237 [2019-05-23 11:22:36,565 INFO L146 ILogger]: Without dead ends: 124 [2019-05-23 11:22:36,569 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 11:22:36,583 INFO L146 ILogger]: Start minimizeSevpa. Operand 124 states. [2019-05-23 11:22:36,606 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 124 to 119. [2019-05-23 11:22:36,607 INFO L146 ILogger]: Start removeUnreachable. Operand 119 states. [2019-05-23 11:22:36,610 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 119 states to 119 states and 129 transitions. [2019-05-23 11:22:36,611 INFO L146 ILogger]: Start accepts. Automaton has 119 states and 129 transitions. Word has length 78 [2019-05-23 11:22:36,612 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:22:36,612 INFO L146 ILogger]: Abstraction has 119 states and 129 transitions. [2019-05-23 11:22:36,612 INFO L146 ILogger]: Interpolant automaton has 3 states. [2019-05-23 11:22:36,612 INFO L146 ILogger]: Start isEmpty. Operand 119 states and 129 transitions. [2019-05-23 11:22:36,615 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 86 [2019-05-23 11:22:36,616 INFO L146 ILogger]: Found error trace [2019-05-23 11:22:36,616 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:22:36,616 INFO L146 ILogger]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:22:36,616 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:22:36,617 INFO L146 ILogger]: Analyzing trace with hash -955470100, now seen corresponding path program 1 times [2019-05-23 11:22:36,617 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:22:36,617 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:22:36,618 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:36,619 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:22:36,619 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:36,638 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:22:36,769 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 11:22:36,769 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:22:36,769 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 11:22:36,789 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:22:36,848 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:22:36,851 INFO L146 ILogger]: Trace formula consists of 152 conjuncts, 3 conjunts are in the unsatisfiable core [2019-05-23 11:22:36,858 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:22:36,899 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 11:22:36,925 INFO L146 ILogger]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-05-23 11:22:36,926 INFO L146 ILogger]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2019-05-23 11:22:36,929 INFO L146 ILogger]: Interpolant automaton has 6 states [2019-05-23 11:22:36,930 INFO L146 ILogger]: Constructing interpolant automaton starting with 6 interpolants. [2019-05-23 11:22:36,930 INFO L146 ILogger]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-05-23 11:22:36,930 INFO L146 ILogger]: Start difference. First operand 119 states and 129 transitions. Second operand 6 states. [2019-05-23 11:22:37,266 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:22:37,267 INFO L146 ILogger]: Finished difference Result 302 states and 331 transitions. [2019-05-23 11:22:37,267 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-05-23 11:22:37,267 INFO L146 ILogger]: Start accepts. Automaton has 6 states. Word has length 85 [2019-05-23 11:22:37,268 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:22:37,271 INFO L146 ILogger]: With dead ends: 302 [2019-05-23 11:22:37,271 INFO L146 ILogger]: Without dead ends: 201 [2019-05-23 11:22:37,273 INFO L146 ILogger]: 0 DeclaredPredicates, 91 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2019-05-23 11:22:37,274 INFO L146 ILogger]: Start minimizeSevpa. Operand 201 states. [2019-05-23 11:22:37,284 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 201 to 144. [2019-05-23 11:22:37,285 INFO L146 ILogger]: Start removeUnreachable. Operand 144 states. [2019-05-23 11:22:37,286 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 144 states to 144 states and 160 transitions. [2019-05-23 11:22:37,286 INFO L146 ILogger]: Start accepts. Automaton has 144 states and 160 transitions. Word has length 85 [2019-05-23 11:22:37,287 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:22:37,287 INFO L146 ILogger]: Abstraction has 144 states and 160 transitions. [2019-05-23 11:22:37,287 INFO L146 ILogger]: Interpolant automaton has 6 states. [2019-05-23 11:22:37,287 INFO L146 ILogger]: Start isEmpty. Operand 144 states and 160 transitions. [2019-05-23 11:22:37,290 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 93 [2019-05-23 11:22:37,290 INFO L146 ILogger]: Found error trace [2019-05-23 11:22:37,291 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] [2019-05-23 11:22:37,291 INFO L146 ILogger]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:22:37,291 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:22:37,291 INFO L146 ILogger]: Analyzing trace with hash -1153429310, now seen corresponding path program 1 times [2019-05-23 11:22:37,292 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:22:37,292 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:22:37,293 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:37,293 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:22:37,293 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:37,313 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:22:37,352 INFO L146 ILogger]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-05-23 11:22:37,352 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:22:37,353 INFO L146 ILogger]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-05-23 11:22:37,353 INFO L146 ILogger]: Interpolant automaton has 3 states [2019-05-23 11:22:37,353 INFO L146 ILogger]: Constructing interpolant automaton starting with 3 interpolants. [2019-05-23 11:22:37,354 INFO L146 ILogger]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-05-23 11:22:37,354 INFO L146 ILogger]: Start difference. First operand 144 states and 160 transitions. Second operand 3 states. [2019-05-23 11:22:37,556 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:22:37,557 INFO L146 ILogger]: Finished difference Result 257 states and 292 transitions. [2019-05-23 11:22:37,560 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-05-23 11:22:37,561 INFO L146 ILogger]: Start accepts. Automaton has 3 states. Word has length 92 [2019-05-23 11:22:37,561 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:22:37,564 INFO L146 ILogger]: With dead ends: 257 [2019-05-23 11:22:37,564 INFO L146 ILogger]: Without dead ends: 156 [2019-05-23 11:22:37,567 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 11:22:37,568 INFO L146 ILogger]: Start minimizeSevpa. Operand 156 states. [2019-05-23 11:22:37,585 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 156 to 150. [2019-05-23 11:22:37,585 INFO L146 ILogger]: Start removeUnreachable. Operand 150 states. [2019-05-23 11:22:37,586 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 150 states to 150 states and 166 transitions. [2019-05-23 11:22:37,587 INFO L146 ILogger]: Start accepts. Automaton has 150 states and 166 transitions. Word has length 92 [2019-05-23 11:22:37,592 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:22:37,592 INFO L146 ILogger]: Abstraction has 150 states and 166 transitions. [2019-05-23 11:22:37,593 INFO L146 ILogger]: Interpolant automaton has 3 states. [2019-05-23 11:22:37,593 INFO L146 ILogger]: Start isEmpty. Operand 150 states and 166 transitions. [2019-05-23 11:22:37,594 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 108 [2019-05-23 11:22:37,595 INFO L146 ILogger]: Found error trace [2019-05-23 11:22:37,595 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, 1, 1, 1, 1] [2019-05-23 11:22:37,595 INFO L146 ILogger]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:22:37,595 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:22:37,596 INFO L146 ILogger]: Analyzing trace with hash -1024653488, now seen corresponding path program 1 times [2019-05-23 11:22:37,596 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:22:37,596 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:22:37,597 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:37,597 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:22:37,597 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:37,616 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:22:37,795 INFO L146 ILogger]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-05-23 11:22:37,795 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:22:37,795 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 11:22:37,816 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:22:37,875 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:22:37,876 INFO L146 ILogger]: Trace formula consists of 186 conjuncts, 2 conjunts are in the unsatisfiable core [2019-05-23 11:22:37,882 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:22:38,031 INFO L146 ILogger]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-05-23 11:22:38,062 INFO L146 ILogger]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-05-23 11:22:38,062 INFO L146 ILogger]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2019-05-23 11:22:38,063 INFO L146 ILogger]: Interpolant automaton has 6 states [2019-05-23 11:22:38,064 INFO L146 ILogger]: Constructing interpolant automaton starting with 6 interpolants. [2019-05-23 11:22:38,064 INFO L146 ILogger]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-05-23 11:22:38,064 INFO L146 ILogger]: Start difference. First operand 150 states and 166 transitions. Second operand 6 states. [2019-05-23 11:22:38,390 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:22:38,390 INFO L146 ILogger]: Finished difference Result 282 states and 318 transitions. [2019-05-23 11:22:38,393 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-05-23 11:22:38,393 INFO L146 ILogger]: Start accepts. Automaton has 6 states. Word has length 107 [2019-05-23 11:22:38,394 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:22:38,396 INFO L146 ILogger]: With dead ends: 282 [2019-05-23 11:22:38,396 INFO L146 ILogger]: Without dead ends: 177 [2019-05-23 11:22:38,397 INFO L146 ILogger]: 0 DeclaredPredicates, 115 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2019-05-23 11:22:38,398 INFO L146 ILogger]: Start minimizeSevpa. Operand 177 states. [2019-05-23 11:22:38,408 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 177 to 166. [2019-05-23 11:22:38,408 INFO L146 ILogger]: Start removeUnreachable. Operand 166 states. [2019-05-23 11:22:38,409 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 166 states to 166 states and 182 transitions. [2019-05-23 11:22:38,409 INFO L146 ILogger]: Start accepts. Automaton has 166 states and 182 transitions. Word has length 107 [2019-05-23 11:22:38,410 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:22:38,410 INFO L146 ILogger]: Abstraction has 166 states and 182 transitions. [2019-05-23 11:22:38,410 INFO L146 ILogger]: Interpolant automaton has 6 states. [2019-05-23 11:22:38,410 INFO L146 ILogger]: Start isEmpty. Operand 166 states and 182 transitions. [2019-05-23 11:22:38,412 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 130 [2019-05-23 11:22:38,413 INFO L146 ILogger]: Found error trace [2019-05-23 11:22:38,413 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:22:38,414 INFO L146 ILogger]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:22:38,414 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:22:38,414 INFO L146 ILogger]: Analyzing trace with hash 379922757, now seen corresponding path program 1 times [2019-05-23 11:22:38,414 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:22:38,414 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:22:38,416 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:38,416 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:22:38,416 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:38,444 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:22:38,739 INFO L146 ILogger]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-05-23 11:22:38,740 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:22:38,740 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 11:22:38,755 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:22:38,809 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:22:38,810 INFO L146 ILogger]: Trace formula consists of 217 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 11:22:38,815 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:22:39,279 INFO L146 ILogger]: Checked inductivity of 31 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-05-23 11:22:39,298 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:22:39,298 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7] total 10 [2019-05-23 11:22:39,298 INFO L146 ILogger]: Interpolant automaton has 10 states [2019-05-23 11:22:39,299 INFO L146 ILogger]: Constructing interpolant automaton starting with 10 interpolants. [2019-05-23 11:22:39,299 INFO L146 ILogger]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2019-05-23 11:22:39,299 INFO L146 ILogger]: Start difference. First operand 166 states and 182 transitions. Second operand 10 states. [2019-05-23 11:22:39,765 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:22:39,765 INFO L146 ILogger]: Finished difference Result 331 states and 364 transitions. [2019-05-23 11:22:39,768 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-05-23 11:22:39,768 INFO L146 ILogger]: Start accepts. Automaton has 10 states. Word has length 129 [2019-05-23 11:22:39,768 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:22:39,769 INFO L146 ILogger]: With dead ends: 331 [2019-05-23 11:22:39,769 INFO L146 ILogger]: Without dead ends: 190 [2019-05-23 11:22:39,771 INFO L146 ILogger]: 0 DeclaredPredicates, 139 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2019-05-23 11:22:39,771 INFO L146 ILogger]: Start minimizeSevpa. Operand 190 states. [2019-05-23 11:22:39,779 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 190 to 180. [2019-05-23 11:22:39,779 INFO L146 ILogger]: Start removeUnreachable. Operand 180 states. [2019-05-23 11:22:39,780 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 180 states to 180 states and 196 transitions. [2019-05-23 11:22:39,780 INFO L146 ILogger]: Start accepts. Automaton has 180 states and 196 transitions. Word has length 129 [2019-05-23 11:22:39,780 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:22:39,781 INFO L146 ILogger]: Abstraction has 180 states and 196 transitions. [2019-05-23 11:22:39,781 INFO L146 ILogger]: Interpolant automaton has 10 states. [2019-05-23 11:22:39,781 INFO L146 ILogger]: Start isEmpty. Operand 180 states and 196 transitions. [2019-05-23 11:22:39,783 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 144 [2019-05-23 11:22:39,783 INFO L146 ILogger]: Found error trace [2019-05-23 11:22:39,783 INFO L146 ILogger]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:22:39,784 INFO L146 ILogger]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:22:39,784 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:22:39,784 INFO L146 ILogger]: Analyzing trace with hash 1280746348, now seen corresponding path program 2 times [2019-05-23 11:22:39,784 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:22:39,784 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:22:39,785 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:39,786 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:22:39,786 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:39,812 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:22:40,103 INFO L146 ILogger]: Checked inductivity of 54 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2019-05-23 11:22:40,104 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:22:40,104 INFO L146 ILogger]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2019-05-23 11:22:40,104 INFO L146 ILogger]: Interpolant automaton has 11 states [2019-05-23 11:22:40,105 INFO L146 ILogger]: Constructing interpolant automaton starting with 11 interpolants. [2019-05-23 11:22:40,105 INFO L146 ILogger]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2019-05-23 11:22:40,105 INFO L146 ILogger]: Start difference. First operand 180 states and 196 transitions. Second operand 11 states. [2019-05-23 11:22:40,499 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:22:40,499 INFO L146 ILogger]: Finished difference Result 402 states and 431 transitions. [2019-05-23 11:22:40,501 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-05-23 11:22:40,501 INFO L146 ILogger]: Start accepts. Automaton has 11 states. Word has length 143 [2019-05-23 11:22:40,503 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:22:40,505 INFO L146 ILogger]: With dead ends: 402 [2019-05-23 11:22:40,505 INFO L146 ILogger]: Without dead ends: 393 [2019-05-23 11:22:40,507 INFO L146 ILogger]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=87, Invalid=255, Unknown=0, NotChecked=0, Total=342 [2019-05-23 11:22:40,507 INFO L146 ILogger]: Start minimizeSevpa. Operand 393 states. [2019-05-23 11:22:40,519 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 393 to 279. [2019-05-23 11:22:40,520 INFO L146 ILogger]: Start removeUnreachable. Operand 279 states. [2019-05-23 11:22:40,521 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 279 states to 279 states and 304 transitions. [2019-05-23 11:22:40,521 INFO L146 ILogger]: Start accepts. Automaton has 279 states and 304 transitions. Word has length 143 [2019-05-23 11:22:40,522 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:22:40,522 INFO L146 ILogger]: Abstraction has 279 states and 304 transitions. [2019-05-23 11:22:40,522 INFO L146 ILogger]: Interpolant automaton has 11 states. [2019-05-23 11:22:40,522 INFO L146 ILogger]: Start isEmpty. Operand 279 states and 304 transitions. [2019-05-23 11:22:40,524 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 153 [2019-05-23 11:22:40,524 INFO L146 ILogger]: Found error trace [2019-05-23 11:22:40,525 INFO L146 ILogger]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:22:40,525 INFO L146 ILogger]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:22:40,525 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:22:40,525 INFO L146 ILogger]: Analyzing trace with hash -745362242, now seen corresponding path program 1 times [2019-05-23 11:22:40,526 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:22:40,526 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:22:40,526 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:40,527 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:22:40,527 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:40,539 ERROR L146 ILogger]: Caught known exception: Unsupported non-linear arithmetic [2019-05-23 11:22:40,540 INFO L146 ILogger]: Advancing trace checker [2019-05-23 11:22:40,540 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-05-23 11:22:40,560 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:22:40,605 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:22:40,606 INFO L146 ILogger]: Trace formula consists of 250 conjuncts, 8 conjunts are in the unsatisfiable core [2019-05-23 11:22:40,612 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:22:40,720 INFO L146 ILogger]: Checked inductivity of 65 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-05-23 11:22:40,738 INFO L146 ILogger]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-05-23 11:22:40,738 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2019-05-23 11:22:40,739 INFO L146 ILogger]: Interpolant automaton has 9 states [2019-05-23 11:22:40,739 INFO L146 ILogger]: Constructing interpolant automaton starting with 9 interpolants. [2019-05-23 11:22:40,739 INFO L146 ILogger]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:22:40,740 INFO L146 ILogger]: Start difference. First operand 279 states and 304 transitions. Second operand 9 states. [2019-05-23 11:22:40,849 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:22:40,850 INFO L146 ILogger]: Finished difference Result 538 states and 588 transitions. [2019-05-23 11:22:40,851 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-05-23 11:22:40,851 INFO L146 ILogger]: Start accepts. Automaton has 9 states. Word has length 152 [2019-05-23 11:22:40,851 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:22:40,853 INFO L146 ILogger]: With dead ends: 538 [2019-05-23 11:22:40,853 INFO L146 ILogger]: Without dead ends: 291 [2019-05-23 11:22:40,854 INFO L146 ILogger]: 0 DeclaredPredicates, 157 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=132, Unknown=0, NotChecked=0, Total=210 [2019-05-23 11:22:40,855 INFO L146 ILogger]: Start minimizeSevpa. Operand 291 states. [2019-05-23 11:22:40,863 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 291 to 286. [2019-05-23 11:22:40,863 INFO L146 ILogger]: Start removeUnreachable. Operand 286 states. [2019-05-23 11:22:40,864 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 286 states to 286 states and 311 transitions. [2019-05-23 11:22:40,865 INFO L146 ILogger]: Start accepts. Automaton has 286 states and 311 transitions. Word has length 152 [2019-05-23 11:22:40,865 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:22:40,865 INFO L146 ILogger]: Abstraction has 286 states and 311 transitions. [2019-05-23 11:22:40,865 INFO L146 ILogger]: Interpolant automaton has 9 states. [2019-05-23 11:22:40,865 INFO L146 ILogger]: Start isEmpty. Operand 286 states and 311 transitions. [2019-05-23 11:22:40,867 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 160 [2019-05-23 11:22:40,867 INFO L146 ILogger]: Found error trace [2019-05-23 11:22:40,867 INFO L146 ILogger]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:22:40,868 INFO L146 ILogger]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:22:40,868 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:22:40,868 INFO L146 ILogger]: Analyzing trace with hash 1348160392, now seen corresponding path program 2 times [2019-05-23 11:22:40,868 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:22:40,869 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:22:40,869 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:40,870 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:22:40,870 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:40,879 ERROR L146 ILogger]: Caught known exception: Unsupported non-linear arithmetic [2019-05-23 11:22:40,880 INFO L146 ILogger]: Advancing trace checker [2019-05-23 11:22:40,880 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-05-23 11:22:40,900 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:22:40,947 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:22:40,947 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:22:40,948 INFO L146 ILogger]: Trace formula consists of 260 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 11:22:40,953 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:22:41,067 INFO L146 ILogger]: Checked inductivity of 87 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2019-05-23 11:22:41,086 INFO L146 ILogger]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-05-23 11:22:41,086 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2019-05-23 11:22:41,086 INFO L146 ILogger]: Interpolant automaton has 7 states [2019-05-23 11:22:41,087 INFO L146 ILogger]: Constructing interpolant automaton starting with 7 interpolants. [2019-05-23 11:22:41,087 INFO L146 ILogger]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-05-23 11:22:41,087 INFO L146 ILogger]: Start difference. First operand 286 states and 311 transitions. Second operand 7 states. [2019-05-23 11:22:41,329 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:22:41,329 INFO L146 ILogger]: Finished difference Result 595 states and 660 transitions. [2019-05-23 11:22:41,329 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-05-23 11:22:41,330 INFO L146 ILogger]: Start accepts. Automaton has 7 states. Word has length 159 [2019-05-23 11:22:41,330 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:22:41,333 INFO L146 ILogger]: With dead ends: 595 [2019-05-23 11:22:41,333 INFO L146 ILogger]: Without dead ends: 382 [2019-05-23 11:22:41,333 INFO L146 ILogger]: 0 DeclaredPredicates, 166 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2019-05-23 11:22:41,334 INFO L146 ILogger]: Start minimizeSevpa. Operand 382 states. [2019-05-23 11:22:41,341 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 382 to 322. [2019-05-23 11:22:41,341 INFO L146 ILogger]: Start removeUnreachable. Operand 322 states. [2019-05-23 11:22:41,342 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 322 states to 322 states and 343 transitions. [2019-05-23 11:22:41,343 INFO L146 ILogger]: Start accepts. Automaton has 322 states and 343 transitions. Word has length 159 [2019-05-23 11:22:41,343 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:22:41,343 INFO L146 ILogger]: Abstraction has 322 states and 343 transitions. [2019-05-23 11:22:41,343 INFO L146 ILogger]: Interpolant automaton has 7 states. [2019-05-23 11:22:41,343 INFO L146 ILogger]: Start isEmpty. Operand 322 states and 343 transitions. [2019-05-23 11:22:41,346 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 205 [2019-05-23 11:22:41,346 INFO L146 ILogger]: Found error trace [2019-05-23 11:22:41,346 INFO L146 ILogger]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:22:41,346 INFO L146 ILogger]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:22:41,346 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:22:41,347 INFO L146 ILogger]: Analyzing trace with hash 503003842, now seen corresponding path program 1 times [2019-05-23 11:22:41,347 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:22:41,347 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:22:41,348 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:41,348 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:22:41,348 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:41,359 ERROR L146 ILogger]: Caught known exception: Unsupported non-linear arithmetic [2019-05-23 11:22:41,360 INFO L146 ILogger]: Advancing trace checker [2019-05-23 11:22:41,360 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-05-23 11:22:41,379 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:22:41,430 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:22:41,431 INFO L146 ILogger]: Trace formula consists of 328 conjuncts, 10 conjunts are in the unsatisfiable core [2019-05-23 11:22:41,435 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:22:41,568 INFO L146 ILogger]: Checked inductivity of 169 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2019-05-23 11:22:41,586 INFO L146 ILogger]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-05-23 11:22:41,587 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2019-05-23 11:22:41,587 INFO L146 ILogger]: Interpolant automaton has 11 states [2019-05-23 11:22:41,587 INFO L146 ILogger]: Constructing interpolant automaton starting with 11 interpolants. [2019-05-23 11:22:41,588 INFO L146 ILogger]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2019-05-23 11:22:41,588 INFO L146 ILogger]: Start difference. First operand 322 states and 343 transitions. Second operand 11 states. [2019-05-23 11:22:41,827 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:22:41,828 INFO L146 ILogger]: Finished difference Result 617 states and 659 transitions. [2019-05-23 11:22:41,828 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-05-23 11:22:41,828 INFO L146 ILogger]: Start accepts. Automaton has 11 states. Word has length 204 [2019-05-23 11:22:41,829 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:22:41,830 INFO L146 ILogger]: With dead ends: 617 [2019-05-23 11:22:41,831 INFO L146 ILogger]: Without dead ends: 334 [2019-05-23 11:22:41,832 INFO L146 ILogger]: 0 DeclaredPredicates, 211 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=123, Invalid=219, Unknown=0, NotChecked=0, Total=342 [2019-05-23 11:22:41,832 INFO L146 ILogger]: Start minimizeSevpa. Operand 334 states. [2019-05-23 11:22:41,842 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 334 to 329. [2019-05-23 11:22:41,842 INFO L146 ILogger]: Start removeUnreachable. Operand 329 states. [2019-05-23 11:22:41,843 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 329 states to 329 states and 350 transitions. [2019-05-23 11:22:41,843 INFO L146 ILogger]: Start accepts. Automaton has 329 states and 350 transitions. Word has length 204 [2019-05-23 11:22:41,844 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:22:41,844 INFO L146 ILogger]: Abstraction has 329 states and 350 transitions. [2019-05-23 11:22:41,844 INFO L146 ILogger]: Interpolant automaton has 11 states. [2019-05-23 11:22:41,844 INFO L146 ILogger]: Start isEmpty. Operand 329 states and 350 transitions. [2019-05-23 11:22:41,854 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 212 [2019-05-23 11:22:41,855 INFO L146 ILogger]: Found error trace [2019-05-23 11:22:41,855 INFO L146 ILogger]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:22:41,855 INFO L146 ILogger]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:22:41,855 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:22:41,858 INFO L146 ILogger]: Analyzing trace with hash -257890164, now seen corresponding path program 2 times [2019-05-23 11:22:41,858 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:22:41,858 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:22:41,859 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:41,859 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:22:41,859 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:41,890 ERROR L146 ILogger]: Caught known exception: Unsupported non-linear arithmetic [2019-05-23 11:22:41,891 INFO L146 ILogger]: Advancing trace checker [2019-05-23 11:22:41,893 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-05-23 11:22:41,913 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:22:41,995 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:22:41,995 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:22:41,997 INFO L146 ILogger]: Trace formula consists of 338 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:22:42,000 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:22:42,261 INFO L146 ILogger]: Checked inductivity of 198 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2019-05-23 11:22:42,291 INFO L146 ILogger]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-05-23 11:22:42,291 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2019-05-23 11:22:42,292 INFO L146 ILogger]: Interpolant automaton has 13 states [2019-05-23 11:22:42,292 INFO L146 ILogger]: Constructing interpolant automaton starting with 13 interpolants. [2019-05-23 11:22:42,292 INFO L146 ILogger]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2019-05-23 11:22:42,293 INFO L146 ILogger]: Start difference. First operand 329 states and 350 transitions. Second operand 13 states. [2019-05-23 11:22:42,511 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:22:42,511 INFO L146 ILogger]: Finished difference Result 624 states and 666 transitions. [2019-05-23 11:22:42,519 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-05-23 11:22:42,519 INFO L146 ILogger]: Start accepts. Automaton has 13 states. Word has length 211 [2019-05-23 11:22:42,519 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:22:42,521 INFO L146 ILogger]: With dead ends: 624 [2019-05-23 11:22:42,521 INFO L146 ILogger]: Without dead ends: 341 [2019-05-23 11:22:42,522 INFO L146 ILogger]: 0 DeclaredPredicates, 220 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=178, Invalid=328, Unknown=0, NotChecked=0, Total=506 [2019-05-23 11:22:42,523 INFO L146 ILogger]: Start minimizeSevpa. Operand 341 states. [2019-05-23 11:22:42,533 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 341 to 336. [2019-05-23 11:22:42,533 INFO L146 ILogger]: Start removeUnreachable. Operand 336 states. [2019-05-23 11:22:42,535 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 336 states to 336 states and 357 transitions. [2019-05-23 11:22:42,535 INFO L146 ILogger]: Start accepts. Automaton has 336 states and 357 transitions. Word has length 211 [2019-05-23 11:22:42,535 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:22:42,535 INFO L146 ILogger]: Abstraction has 336 states and 357 transitions. [2019-05-23 11:22:42,535 INFO L146 ILogger]: Interpolant automaton has 13 states. [2019-05-23 11:22:42,536 INFO L146 ILogger]: Start isEmpty. Operand 336 states and 357 transitions. [2019-05-23 11:22:42,537 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 219 [2019-05-23 11:22:42,537 INFO L146 ILogger]: Found error trace [2019-05-23 11:22:42,538 INFO L146 ILogger]: trace histogram [6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:22:42,538 INFO L146 ILogger]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:22:42,538 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:22:42,538 INFO L146 ILogger]: Analyzing trace with hash -312736894, now seen corresponding path program 3 times [2019-05-23 11:22:42,539 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:22:42,539 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:22:42,539 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:42,540 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:22:42,540 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:42,563 ERROR L146 ILogger]: Caught known exception: Unsupported non-linear arithmetic [2019-05-23 11:22:42,563 INFO L146 ILogger]: Advancing trace checker [2019-05-23 11:22:42,563 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-05-23 11:22:42,577 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:22:43,788 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-05-23 11:22:43,788 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:22:43,790 INFO L146 ILogger]: Trace formula consists of 245 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 11:22:43,793 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:22:43,890 INFO L146 ILogger]: Checked inductivity of 234 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2019-05-23 11:22:43,909 INFO L146 ILogger]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-05-23 11:22:43,909 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2019-05-23 11:22:43,909 INFO L146 ILogger]: Interpolant automaton has 7 states [2019-05-23 11:22:43,910 INFO L146 ILogger]: Constructing interpolant automaton starting with 7 interpolants. [2019-05-23 11:22:43,910 INFO L146 ILogger]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-05-23 11:22:43,910 INFO L146 ILogger]: Start difference. First operand 336 states and 357 transitions. Second operand 7 states. [2019-05-23 11:22:44,166 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:22:44,167 INFO L146 ILogger]: Finished difference Result 449 states and 478 transitions. [2019-05-23 11:22:44,167 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-05-23 11:22:44,167 INFO L146 ILogger]: Start accepts. Automaton has 7 states. Word has length 218 [2019-05-23 11:22:44,168 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:22:44,170 INFO L146 ILogger]: With dead ends: 449 [2019-05-23 11:22:44,170 INFO L146 ILogger]: Without dead ends: 360 [2019-05-23 11:22:44,171 INFO L146 ILogger]: 0 DeclaredPredicates, 221 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2019-05-23 11:22:44,171 INFO L146 ILogger]: Start minimizeSevpa. Operand 360 states. [2019-05-23 11:22:44,178 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 360 to 350. [2019-05-23 11:22:44,178 INFO L146 ILogger]: Start removeUnreachable. Operand 350 states. [2019-05-23 11:22:44,179 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 350 states to 350 states and 371 transitions. [2019-05-23 11:22:44,179 INFO L146 ILogger]: Start accepts. Automaton has 350 states and 371 transitions. Word has length 218 [2019-05-23 11:22:44,180 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:22:44,180 INFO L146 ILogger]: Abstraction has 350 states and 371 transitions. [2019-05-23 11:22:44,180 INFO L146 ILogger]: Interpolant automaton has 7 states. [2019-05-23 11:22:44,180 INFO L146 ILogger]: Start isEmpty. Operand 350 states and 371 transitions. [2019-05-23 11:22:44,181 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 226 [2019-05-23 11:22:44,181 INFO L146 ILogger]: Found error trace [2019-05-23 11:22:44,182 INFO L146 ILogger]: trace histogram [6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:22:44,182 INFO L146 ILogger]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:22:44,182 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:22:44,182 INFO L146 ILogger]: Analyzing trace with hash -1538059067, now seen corresponding path program 4 times [2019-05-23 11:22:44,182 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:22:44,183 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:22:44,183 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:44,183 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:22:44,184 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:44,194 ERROR L146 ILogger]: Caught known exception: Unsupported non-linear arithmetic [2019-05-23 11:22:44,194 INFO L146 ILogger]: Advancing trace checker [2019-05-23 11:22:44,194 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-05-23 11:22:44,212 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:22:44,267 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:22:44,267 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:22:44,270 INFO L146 ILogger]: Trace formula consists of 325 conjuncts, 14 conjunts are in the unsatisfiable core [2019-05-23 11:22:44,273 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:22:45,075 INFO L146 ILogger]: Checked inductivity of 249 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2019-05-23 11:22:45,093 INFO L146 ILogger]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-05-23 11:22:45,093 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2019-05-23 11:22:45,093 INFO L146 ILogger]: Interpolant automaton has 15 states [2019-05-23 11:22:45,094 INFO L146 ILogger]: Constructing interpolant automaton starting with 15 interpolants. [2019-05-23 11:22:45,094 INFO L146 ILogger]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2019-05-23 11:22:45,094 INFO L146 ILogger]: Start difference. First operand 350 states and 371 transitions. Second operand 15 states. [2019-05-23 11:22:45,448 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:22:45,449 INFO L146 ILogger]: Finished difference Result 659 states and 701 transitions. [2019-05-23 11:22:45,450 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-05-23 11:22:45,450 INFO L146 ILogger]: Start accepts. Automaton has 15 states. Word has length 225 [2019-05-23 11:22:45,450 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:22:45,452 INFO L146 ILogger]: With dead ends: 659 [2019-05-23 11:22:45,452 INFO L146 ILogger]: Without dead ends: 362 [2019-05-23 11:22:45,454 INFO L146 ILogger]: 0 DeclaredPredicates, 236 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=243, Invalid=459, Unknown=0, NotChecked=0, Total=702 [2019-05-23 11:22:45,454 INFO L146 ILogger]: Start minimizeSevpa. Operand 362 states. [2019-05-23 11:22:45,460 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 362 to 357. [2019-05-23 11:22:45,460 INFO L146 ILogger]: Start removeUnreachable. Operand 357 states. [2019-05-23 11:22:45,461 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 357 states to 357 states and 378 transitions. [2019-05-23 11:22:45,462 INFO L146 ILogger]: Start accepts. Automaton has 357 states and 378 transitions. Word has length 225 [2019-05-23 11:22:45,462 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:22:45,462 INFO L146 ILogger]: Abstraction has 357 states and 378 transitions. [2019-05-23 11:22:45,462 INFO L146 ILogger]: Interpolant automaton has 15 states. [2019-05-23 11:22:45,462 INFO L146 ILogger]: Start isEmpty. Operand 357 states and 378 transitions. [2019-05-23 11:22:45,463 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 233 [2019-05-23 11:22:45,464 INFO L146 ILogger]: Found error trace [2019-05-23 11:22:45,464 INFO L146 ILogger]: trace histogram [7, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:22:45,464 INFO L146 ILogger]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:22:45,464 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:22:45,465 INFO L146 ILogger]: Analyzing trace with hash -546256581, now seen corresponding path program 5 times [2019-05-23 11:22:45,468 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:22:45,468 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:22:45,469 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:45,469 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:22:45,469 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:45,483 ERROR L146 ILogger]: Caught known exception: Unsupported non-linear arithmetic [2019-05-23 11:22:45,484 INFO L146 ILogger]: Advancing trace checker [2019-05-23 11:22:45,484 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-05-23 11:22:45,494 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:22:45,578 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2019-05-23 11:22:45,579 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:22:45,580 INFO L146 ILogger]: Trace formula consists of 368 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 11:22:45,582 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:22:45,874 INFO L146 ILogger]: Checked inductivity of 292 backedges. 21 proven. 9 refuted. 0 times theorem prover too weak. 262 trivial. 0 not checked. [2019-05-23 11:22:45,892 INFO L146 ILogger]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-05-23 11:22:45,892 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2019-05-23 11:22:45,893 INFO L146 ILogger]: Interpolant automaton has 7 states [2019-05-23 11:22:45,893 INFO L146 ILogger]: Constructing interpolant automaton starting with 7 interpolants. [2019-05-23 11:22:45,893 INFO L146 ILogger]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-05-23 11:22:45,893 INFO L146 ILogger]: Start difference. First operand 357 states and 378 transitions. Second operand 7 states. [2019-05-23 11:22:46,101 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:22:46,102 INFO L146 ILogger]: Finished difference Result 669 states and 715 transitions. [2019-05-23 11:22:46,102 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-05-23 11:22:46,103 INFO L146 ILogger]: Start accepts. Automaton has 7 states. Word has length 232 [2019-05-23 11:22:46,103 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:22:46,106 INFO L146 ILogger]: With dead ends: 669 [2019-05-23 11:22:46,106 INFO L146 ILogger]: Without dead ends: 392 [2019-05-23 11:22:46,107 INFO L146 ILogger]: 0 DeclaredPredicates, 239 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2019-05-23 11:22:46,108 INFO L146 ILogger]: Start minimizeSevpa. Operand 392 states. [2019-05-23 11:22:46,117 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 392 to 382. [2019-05-23 11:22:46,117 INFO L146 ILogger]: Start removeUnreachable. Operand 382 states. [2019-05-23 11:22:46,118 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 382 states to 382 states and 403 transitions. [2019-05-23 11:22:46,118 INFO L146 ILogger]: Start accepts. Automaton has 382 states and 403 transitions. Word has length 232 [2019-05-23 11:22:46,119 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:22:46,119 INFO L146 ILogger]: Abstraction has 382 states and 403 transitions. [2019-05-23 11:22:46,119 INFO L146 ILogger]: Interpolant automaton has 7 states. [2019-05-23 11:22:46,119 INFO L146 ILogger]: Start isEmpty. Operand 382 states and 403 transitions. [2019-05-23 11:22:46,120 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 248 [2019-05-23 11:22:46,120 INFO L146 ILogger]: Found error trace [2019-05-23 11:22:46,121 INFO L146 ILogger]: trace histogram [7, 7, 7, 7, 7, 7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:22:46,121 INFO L146 ILogger]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:22:46,121 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:22:46,122 INFO L146 ILogger]: Analyzing trace with hash 2080387367, now seen corresponding path program 6 times [2019-05-23 11:22:46,122 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:22:46,122 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:22:46,123 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:46,123 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:22:46,123 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:46,135 ERROR L146 ILogger]: Caught known exception: Unsupported non-linear arithmetic [2019-05-23 11:22:46,135 INFO L146 ILogger]: Advancing trace checker [2019-05-23 11:22:46,135 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-05-23 11:22:46,179 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:22:50,081 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2019-05-23 11:22:50,081 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:22:50,083 INFO L146 ILogger]: Trace formula consists of 358 conjuncts, 8 conjunts are in the unsatisfiable core [2019-05-23 11:22:50,086 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:22:50,166 INFO L146 ILogger]: Checked inductivity of 355 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 331 trivial. 0 not checked. [2019-05-23 11:22:50,185 INFO L146 ILogger]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-05-23 11:22:50,186 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2019-05-23 11:22:50,186 INFO L146 ILogger]: Interpolant automaton has 9 states [2019-05-23 11:22:50,187 INFO L146 ILogger]: Constructing interpolant automaton starting with 9 interpolants. [2019-05-23 11:22:50,187 INFO L146 ILogger]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:22:50,187 INFO L146 ILogger]: Start difference. First operand 382 states and 403 transitions. Second operand 9 states. [2019-05-23 11:22:50,341 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:22:50,341 INFO L146 ILogger]: Finished difference Result 505 states and 534 transitions. [2019-05-23 11:22:50,341 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-05-23 11:22:50,341 INFO L146 ILogger]: Start accepts. Automaton has 9 states. Word has length 247 [2019-05-23 11:22:50,342 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:22:50,343 INFO L146 ILogger]: With dead ends: 505 [2019-05-23 11:22:50,343 INFO L146 ILogger]: Without dead ends: 406 [2019-05-23 11:22:50,344 INFO L146 ILogger]: 0 DeclaredPredicates, 252 GetRequests, 239 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=78, Invalid=132, Unknown=0, NotChecked=0, Total=210 [2019-05-23 11:22:50,344 INFO L146 ILogger]: Start minimizeSevpa. Operand 406 states. [2019-05-23 11:22:50,351 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 406 to 396. [2019-05-23 11:22:50,351 INFO L146 ILogger]: Start removeUnreachable. Operand 396 states. [2019-05-23 11:22:50,352 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 396 states to 396 states and 417 transitions. [2019-05-23 11:22:50,352 INFO L146 ILogger]: Start accepts. Automaton has 396 states and 417 transitions. Word has length 247 [2019-05-23 11:22:50,353 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:22:50,353 INFO L146 ILogger]: Abstraction has 396 states and 417 transitions. [2019-05-23 11:22:50,353 INFO L146 ILogger]: Interpolant automaton has 9 states. [2019-05-23 11:22:50,353 INFO L146 ILogger]: Start isEmpty. Operand 396 states and 417 transitions. [2019-05-23 11:22:50,354 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 255 [2019-05-23 11:22:50,355 INFO L146 ILogger]: Found error trace [2019-05-23 11:22:50,355 INFO L146 ILogger]: trace histogram [7, 7, 7, 7, 7, 7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:22:50,355 INFO L146 ILogger]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:22:50,355 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:22:50,356 INFO L146 ILogger]: Analyzing trace with hash 1204565478, now seen corresponding path program 7 times [2019-05-23 11:22:50,356 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:22:50,356 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:22:50,357 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:50,357 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:22:50,357 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:50,367 ERROR L146 ILogger]: Caught known exception: Unsupported non-linear arithmetic [2019-05-23 11:22:50,367 INFO L146 ILogger]: Advancing trace checker [2019-05-23 11:22:50,367 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-05-23 11:22:50,384 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:22:50,440 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:22:50,441 INFO L146 ILogger]: Trace formula consists of 399 conjuncts, 16 conjunts are in the unsatisfiable core [2019-05-23 11:22:50,444 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:22:50,732 INFO L146 ILogger]: Checked inductivity of 377 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked. [2019-05-23 11:22:50,751 INFO L146 ILogger]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-05-23 11:22:50,751 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2019-05-23 11:22:50,751 INFO L146 ILogger]: Interpolant automaton has 17 states [2019-05-23 11:22:50,752 INFO L146 ILogger]: Constructing interpolant automaton starting with 17 interpolants. [2019-05-23 11:22:50,752 INFO L146 ILogger]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2019-05-23 11:22:50,752 INFO L146 ILogger]: Start difference. First operand 396 states and 417 transitions. Second operand 17 states. [2019-05-23 11:22:51,137 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:22:51,138 INFO L146 ILogger]: Finished difference Result 744 states and 786 transitions. [2019-05-23 11:22:51,139 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-05-23 11:22:51,139 INFO L146 ILogger]: Start accepts. Automaton has 17 states. Word has length 254 [2019-05-23 11:22:51,139 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:22:51,141 INFO L146 ILogger]: With dead ends: 744 [2019-05-23 11:22:51,141 INFO L146 ILogger]: Without dead ends: 408 [2019-05-23 11:22:51,142 INFO L146 ILogger]: 0 DeclaredPredicates, 267 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=318, Invalid=612, Unknown=0, NotChecked=0, Total=930 [2019-05-23 11:22:51,143 INFO L146 ILogger]: Start minimizeSevpa. Operand 408 states. [2019-05-23 11:22:51,152 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 408 to 403. [2019-05-23 11:22:51,152 INFO L146 ILogger]: Start removeUnreachable. Operand 403 states. [2019-05-23 11:22:51,153 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 403 states to 403 states and 424 transitions. [2019-05-23 11:22:51,153 INFO L146 ILogger]: Start accepts. Automaton has 403 states and 424 transitions. Word has length 254 [2019-05-23 11:22:51,153 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:22:51,153 INFO L146 ILogger]: Abstraction has 403 states and 424 transitions. [2019-05-23 11:22:51,153 INFO L146 ILogger]: Interpolant automaton has 17 states. [2019-05-23 11:22:51,154 INFO L146 ILogger]: Start isEmpty. Operand 403 states and 424 transitions. [2019-05-23 11:22:51,155 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 262 [2019-05-23 11:22:51,155 INFO L146 ILogger]: Found error trace [2019-05-23 11:22:51,155 INFO L146 ILogger]: trace histogram [8, 8, 8, 8, 8, 8, 8, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:22:51,156 INFO L146 ILogger]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:22:51,156 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:22:51,156 INFO L146 ILogger]: Analyzing trace with hash 370285872, now seen corresponding path program 8 times [2019-05-23 11:22:51,156 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:22:51,156 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:22:51,157 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:51,157 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:22:51,157 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:51,171 ERROR L146 ILogger]: Caught known exception: Unsupported non-linear arithmetic [2019-05-23 11:22:51,171 INFO L146 ILogger]: Advancing trace checker [2019-05-23 11:22:51,172 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-05-23 11:22:51,190 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:22:52,009 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:22:52,009 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:22:52,010 INFO L146 ILogger]: Trace formula consists of 409 conjuncts, 18 conjunts are in the unsatisfiable core [2019-05-23 11:22:52,013 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:22:52,176 INFO L146 ILogger]: Checked inductivity of 427 backedges. 0 proven. 204 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked. [2019-05-23 11:22:52,196 INFO L146 ILogger]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-05-23 11:22:52,196 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2019-05-23 11:22:52,197 INFO L146 ILogger]: Interpolant automaton has 19 states [2019-05-23 11:22:52,197 INFO L146 ILogger]: Constructing interpolant automaton starting with 19 interpolants. [2019-05-23 11:22:52,197 INFO L146 ILogger]: CoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2019-05-23 11:22:52,198 INFO L146 ILogger]: Start difference. First operand 403 states and 424 transitions. Second operand 19 states. [2019-05-23 11:22:52,487 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:22:52,501 INFO L146 ILogger]: Finished difference Result 751 states and 793 transitions. [2019-05-23 11:22:52,503 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2019-05-23 11:22:52,503 INFO L146 ILogger]: Start accepts. Automaton has 19 states. Word has length 261 [2019-05-23 11:22:52,503 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:22:52,505 INFO L146 ILogger]: With dead ends: 751 [2019-05-23 11:22:52,505 INFO L146 ILogger]: Without dead ends: 415 [2019-05-23 11:22:52,508 INFO L146 ILogger]: 0 DeclaredPredicates, 276 GetRequests, 243 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=403, Invalid=787, Unknown=0, NotChecked=0, Total=1190 [2019-05-23 11:22:52,509 INFO L146 ILogger]: Start minimizeSevpa. Operand 415 states. [2019-05-23 11:22:52,515 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 415 to 410. [2019-05-23 11:22:52,515 INFO L146 ILogger]: Start removeUnreachable. Operand 410 states. [2019-05-23 11:22:52,516 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 410 states to 410 states and 431 transitions. [2019-05-23 11:22:52,517 INFO L146 ILogger]: Start accepts. Automaton has 410 states and 431 transitions. Word has length 261 [2019-05-23 11:22:52,517 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:22:52,517 INFO L146 ILogger]: Abstraction has 410 states and 431 transitions. [2019-05-23 11:22:52,517 INFO L146 ILogger]: Interpolant automaton has 19 states. [2019-05-23 11:22:52,517 INFO L146 ILogger]: Start isEmpty. Operand 410 states and 431 transitions. [2019-05-23 11:22:52,519 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 269 [2019-05-23 11:22:52,519 INFO L146 ILogger]: Found error trace [2019-05-23 11:22:52,519 INFO L146 ILogger]: trace histogram [9, 9, 9, 9, 9, 9, 9, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:22:52,520 INFO L146 ILogger]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:22:52,520 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:22:52,520 INFO L146 ILogger]: Analyzing trace with hash -691974490, now seen corresponding path program 9 times [2019-05-23 11:22:52,520 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:22:52,520 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:22:52,521 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:52,521 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:22:52,521 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:52,534 ERROR L146 ILogger]: Caught known exception: Unsupported non-linear arithmetic [2019-05-23 11:22:52,534 INFO L146 ILogger]: Advancing trace checker [2019-05-23 11:22:52,534 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-05-23 11:22:52,551 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:22:52,707 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2019-05-23 11:22:52,708 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:22:52,709 INFO L146 ILogger]: Trace formula consists of 348 conjuncts, 8 conjunts are in the unsatisfiable core [2019-05-23 11:22:52,711 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:22:52,802 INFO L146 ILogger]: Checked inductivity of 484 backedges. 33 proven. 17 refuted. 0 times theorem prover too weak. 434 trivial. 0 not checked. [2019-05-23 11:22:52,821 INFO L146 ILogger]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-05-23 11:22:52,821 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2019-05-23 11:22:52,822 INFO L146 ILogger]: Interpolant automaton has 9 states [2019-05-23 11:22:52,822 INFO L146 ILogger]: Constructing interpolant automaton starting with 9 interpolants. [2019-05-23 11:22:52,822 INFO L146 ILogger]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:22:52,822 INFO L146 ILogger]: Start difference. First operand 410 states and 431 transitions. Second operand 9 states. [2019-05-23 11:22:53,026 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:22:53,027 INFO L146 ILogger]: Finished difference Result 779 states and 832 transitions. [2019-05-23 11:22:53,027 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-05-23 11:22:53,027 INFO L146 ILogger]: Start accepts. Automaton has 9 states. Word has length 268 [2019-05-23 11:22:53,028 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:22:53,032 INFO L146 ILogger]: With dead ends: 779 [2019-05-23 11:22:53,032 INFO L146 ILogger]: Without dead ends: 490 [2019-05-23 11:22:53,033 INFO L146 ILogger]: 0 DeclaredPredicates, 279 GetRequests, 266 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=78, Invalid=132, Unknown=0, NotChecked=0, Total=210 [2019-05-23 11:22:53,034 INFO L146 ILogger]: Start minimizeSevpa. Operand 490 states. [2019-05-23 11:22:53,045 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 490 to 455. [2019-05-23 11:22:53,045 INFO L146 ILogger]: Start removeUnreachable. Operand 455 states. [2019-05-23 11:22:53,046 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 455 states to 455 states and 481 transitions. [2019-05-23 11:22:53,046 INFO L146 ILogger]: Start accepts. Automaton has 455 states and 481 transitions. Word has length 268 [2019-05-23 11:22:53,047 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:22:53,047 INFO L146 ILogger]: Abstraction has 455 states and 481 transitions. [2019-05-23 11:22:53,047 INFO L146 ILogger]: Interpolant automaton has 9 states. [2019-05-23 11:22:53,047 INFO L146 ILogger]: Start isEmpty. Operand 455 states and 481 transitions. [2019-05-23 11:22:53,049 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 296 [2019-05-23 11:22:53,049 INFO L146 ILogger]: Found error trace [2019-05-23 11:22:53,049 INFO L146 ILogger]: trace histogram [9, 9, 9, 9, 9, 9, 9, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:22:53,050 INFO L146 ILogger]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:22:53,050 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:22:53,050 INFO L146 ILogger]: Analyzing trace with hash 1637845672, now seen corresponding path program 10 times [2019-05-23 11:22:53,050 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:22:53,050 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:22:53,051 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:53,051 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:22:53,051 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:53,065 ERROR L146 ILogger]: Caught known exception: Unsupported non-linear arithmetic [2019-05-23 11:22:53,065 INFO L146 ILogger]: Advancing trace checker [2019-05-23 11:22:53,065 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-05-23 11:22:53,081 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:22:53,145 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:22:53,145 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:22:53,147 INFO L146 ILogger]: Trace formula consists of 422 conjuncts, 20 conjunts are in the unsatisfiable core [2019-05-23 11:22:53,151 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:22:53,468 INFO L146 ILogger]: Checked inductivity of 586 backedges. 0 proven. 261 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2019-05-23 11:22:53,486 INFO L146 ILogger]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-05-23 11:22:53,486 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2019-05-23 11:22:53,486 INFO L146 ILogger]: Interpolant automaton has 21 states [2019-05-23 11:22:53,487 INFO L146 ILogger]: Constructing interpolant automaton starting with 21 interpolants. [2019-05-23 11:22:53,487 INFO L146 ILogger]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2019-05-23 11:22:53,487 INFO L146 ILogger]: Start difference. First operand 455 states and 481 transitions. Second operand 21 states. [2019-05-23 11:22:53,797 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:22:53,797 INFO L146 ILogger]: Finished difference Result 843 states and 895 transitions. [2019-05-23 11:22:53,797 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2019-05-23 11:22:53,798 INFO L146 ILogger]: Start accepts. Automaton has 21 states. Word has length 295 [2019-05-23 11:22:53,798 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:22:53,799 INFO L146 ILogger]: With dead ends: 843 [2019-05-23 11:22:53,800 INFO L146 ILogger]: Without dead ends: 462 [2019-05-23 11:22:53,801 INFO L146 ILogger]: 0 DeclaredPredicates, 312 GetRequests, 275 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=498, Invalid=984, Unknown=0, NotChecked=0, Total=1482 [2019-05-23 11:22:53,801 INFO L146 ILogger]: Start minimizeSevpa. Operand 462 states. [2019-05-23 11:22:53,809 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 462 to 462. [2019-05-23 11:22:53,809 INFO L146 ILogger]: Start removeUnreachable. Operand 462 states. [2019-05-23 11:22:53,810 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 462 states to 462 states and 488 transitions. [2019-05-23 11:22:53,810 INFO L146 ILogger]: Start accepts. Automaton has 462 states and 488 transitions. Word has length 295 [2019-05-23 11:22:53,810 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:22:53,811 INFO L146 ILogger]: Abstraction has 462 states and 488 transitions. [2019-05-23 11:22:53,811 INFO L146 ILogger]: Interpolant automaton has 21 states. [2019-05-23 11:22:53,811 INFO L146 ILogger]: Start isEmpty. Operand 462 states and 488 transitions. [2019-05-23 11:22:53,813 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 303 [2019-05-23 11:22:53,813 INFO L146 ILogger]: Found error trace [2019-05-23 11:22:53,813 INFO L146 ILogger]: trace histogram [10, 10, 10, 10, 10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:22:53,813 INFO L146 ILogger]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:22:53,814 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:22:53,814 INFO L146 ILogger]: Analyzing trace with hash 455794334, now seen corresponding path program 11 times [2019-05-23 11:22:53,814 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:22:53,814 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:22:53,815 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:53,815 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:22:53,815 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:53,827 ERROR L146 ILogger]: Caught known exception: Unsupported non-linear arithmetic [2019-05-23 11:22:53,827 INFO L146 ILogger]: Advancing trace checker [2019-05-23 11:22:53,828 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-05-23 11:22:53,843 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:22:54,146 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2019-05-23 11:22:54,146 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:22:54,148 INFO L146 ILogger]: Trace formula consists of 471 conjuncts, 8 conjunts are in the unsatisfiable core [2019-05-23 11:22:54,152 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:22:55,001 INFO L146 ILogger]: Checked inductivity of 650 backedges. 47 proven. 21 refuted. 0 times theorem prover too weak. 582 trivial. 0 not checked. [2019-05-23 11:22:55,059 INFO L146 ILogger]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-05-23 11:22:55,060 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2019-05-23 11:22:55,060 INFO L146 ILogger]: Interpolant automaton has 9 states [2019-05-23 11:22:55,061 INFO L146 ILogger]: Constructing interpolant automaton starting with 9 interpolants. [2019-05-23 11:22:55,061 INFO L146 ILogger]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:22:55,062 INFO L146 ILogger]: Start difference. First operand 462 states and 488 transitions. Second operand 9 states. [2019-05-23 11:22:55,522 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:22:55,522 INFO L146 ILogger]: Finished difference Result 853 states and 909 transitions. [2019-05-23 11:22:55,522 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-05-23 11:22:55,523 INFO L146 ILogger]: Start accepts. Automaton has 9 states. Word has length 302 [2019-05-23 11:22:55,523 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:22:55,526 INFO L146 ILogger]: With dead ends: 853 [2019-05-23 11:22:55,526 INFO L146 ILogger]: Without dead ends: 497 [2019-05-23 11:22:55,527 INFO L146 ILogger]: 0 DeclaredPredicates, 307 GetRequests, 294 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=78, Invalid=132, Unknown=0, NotChecked=0, Total=210 [2019-05-23 11:22:55,528 INFO L146 ILogger]: Start minimizeSevpa. Operand 497 states. [2019-05-23 11:22:55,535 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 497 to 487. [2019-05-23 11:22:55,535 INFO L146 ILogger]: Start removeUnreachable. Operand 487 states. [2019-05-23 11:22:55,536 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 487 states to 487 states and 513 transitions. [2019-05-23 11:22:55,536 INFO L146 ILogger]: Start accepts. Automaton has 487 states and 513 transitions. Word has length 302 [2019-05-23 11:22:55,536 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:22:55,537 INFO L146 ILogger]: Abstraction has 487 states and 513 transitions. [2019-05-23 11:22:55,537 INFO L146 ILogger]: Interpolant automaton has 9 states. [2019-05-23 11:22:55,537 INFO L146 ILogger]: Start isEmpty. Operand 487 states and 513 transitions. [2019-05-23 11:22:55,539 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 318 [2019-05-23 11:22:55,539 INFO L146 ILogger]: Found error trace [2019-05-23 11:22:55,539 INFO L146 ILogger]: trace histogram [10, 10, 10, 10, 10, 10, 10, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:22:55,539 INFO L146 ILogger]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:22:55,540 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:22:55,540 INFO L146 ILogger]: Analyzing trace with hash 1762799860, now seen corresponding path program 12 times [2019-05-23 11:22:55,540 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:22:55,540 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:22:55,541 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:55,541 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:22:55,541 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:55,553 ERROR L146 ILogger]: Caught known exception: Unsupported non-linear arithmetic [2019-05-23 11:22:55,553 INFO L146 ILogger]: Advancing trace checker [2019-05-23 11:22:55,553 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-05-23 11:22:55,573 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:23:42,177 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2019-05-23 11:23:42,178 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:42,181 INFO L146 ILogger]: Trace formula consists of 430 conjuncts, 22 conjunts are in the unsatisfiable core [2019-05-23 11:23:42,185 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:23:42,398 INFO L146 ILogger]: Checked inductivity of 743 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 697 trivial. 0 not checked. [2019-05-23 11:23:42,418 INFO L146 ILogger]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-05-23 11:23:42,418 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2019-05-23 11:23:42,418 INFO L146 ILogger]: Interpolant automaton has 11 states [2019-05-23 11:23:42,418 INFO L146 ILogger]: Constructing interpolant automaton starting with 11 interpolants. [2019-05-23 11:23:42,419 INFO L146 ILogger]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2019-05-23 11:23:42,419 INFO L146 ILogger]: Start difference. First operand 487 states and 513 transitions. Second operand 11 states. [2019-05-23 11:23:42,543 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:23:42,543 INFO L146 ILogger]: Finished difference Result 638 states and 674 transitions. [2019-05-23 11:23:42,544 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-05-23 11:23:42,544 INFO L146 ILogger]: Start accepts. Automaton has 11 states. Word has length 317 [2019-05-23 11:23:42,545 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:23:42,547 INFO L146 ILogger]: With dead ends: 638 [2019-05-23 11:23:42,547 INFO L146 ILogger]: Without dead ends: 511 [2019-05-23 11:23:42,548 INFO L146 ILogger]: 0 DeclaredPredicates, 324 GetRequests, 307 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=123, Invalid=219, Unknown=0, NotChecked=0, Total=342 [2019-05-23 11:23:42,548 INFO L146 ILogger]: Start minimizeSevpa. Operand 511 states. [2019-05-23 11:23:42,555 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 511 to 501. [2019-05-23 11:23:42,556 INFO L146 ILogger]: Start removeUnreachable. Operand 501 states. [2019-05-23 11:23:42,557 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 501 states to 501 states and 527 transitions. [2019-05-23 11:23:42,557 INFO L146 ILogger]: Start accepts. Automaton has 501 states and 527 transitions. Word has length 317 [2019-05-23 11:23:42,557 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:23:42,557 INFO L146 ILogger]: Abstraction has 501 states and 527 transitions. [2019-05-23 11:23:42,558 INFO L146 ILogger]: Interpolant automaton has 11 states. [2019-05-23 11:23:42,558 INFO L146 ILogger]: Start isEmpty. Operand 501 states and 527 transitions. [2019-05-23 11:23:42,559 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 325 [2019-05-23 11:23:42,560 INFO L146 ILogger]: Found error trace [2019-05-23 11:23:42,560 INFO L146 ILogger]: trace histogram [10, 10, 10, 10, 10, 10, 10, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:23:42,560 INFO L146 ILogger]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:23:42,560 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:23:42,561 INFO L146 ILogger]: Analyzing trace with hash -1694608591, now seen corresponding path program 13 times [2019-05-23 11:23:42,561 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:23:42,561 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:23:42,562 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:42,562 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:23:42,562 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:42,573 ERROR L146 ILogger]: Caught known exception: Unsupported non-linear arithmetic [2019-05-23 11:23:42,573 INFO L146 ILogger]: Advancing trace checker [2019-05-23 11:23:42,573 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-05-23 11:23:42,591 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:23:42,661 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:42,662 INFO L146 ILogger]: Trace formula consists of 502 conjuncts, 10 conjunts are in the unsatisfiable core [2019-05-23 11:23:42,665 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:23:42,770 INFO L146 ILogger]: Checked inductivity of 772 backedges. 61 proven. 38 refuted. 0 times theorem prover too weak. 673 trivial. 0 not checked. [2019-05-23 11:23:42,789 INFO L146 ILogger]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-05-23 11:23:42,789 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2019-05-23 11:23:42,790 INFO L146 ILogger]: Interpolant automaton has 11 states [2019-05-23 11:23:42,790 INFO L146 ILogger]: Constructing interpolant automaton starting with 11 interpolants. [2019-05-23 11:23:42,790 INFO L146 ILogger]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2019-05-23 11:23:42,790 INFO L146 ILogger]: Start difference. First operand 501 states and 527 transitions. Second operand 11 states. [2019-05-23 11:23:43,038 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:23:43,038 INFO L146 ILogger]: Finished difference Result 926 states and 982 transitions. [2019-05-23 11:23:43,038 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-05-23 11:23:43,038 INFO L146 ILogger]: Start accepts. Automaton has 11 states. Word has length 324 [2019-05-23 11:23:43,039 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:23:43,042 INFO L146 ILogger]: With dead ends: 926 [2019-05-23 11:23:43,042 INFO L146 ILogger]: Without dead ends: 536 [2019-05-23 11:23:43,043 INFO L146 ILogger]: 0 DeclaredPredicates, 331 GetRequests, 314 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=123, Invalid=219, Unknown=0, NotChecked=0, Total=342 [2019-05-23 11:23:43,044 INFO L146 ILogger]: Start minimizeSevpa. Operand 536 states. [2019-05-23 11:23:43,051 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 536 to 526. [2019-05-23 11:23:43,051 INFO L146 ILogger]: Start removeUnreachable. Operand 526 states. [2019-05-23 11:23:43,052 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 526 states to 526 states and 552 transitions. [2019-05-23 11:23:43,053 INFO L146 ILogger]: Start accepts. Automaton has 526 states and 552 transitions. Word has length 324 [2019-05-23 11:23:43,053 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:23:43,053 INFO L146 ILogger]: Abstraction has 526 states and 552 transitions. [2019-05-23 11:23:43,053 INFO L146 ILogger]: Interpolant automaton has 11 states. [2019-05-23 11:23:43,053 INFO L146 ILogger]: Start isEmpty. Operand 526 states and 552 transitions. [2019-05-23 11:23:43,055 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 340 [2019-05-23 11:23:43,055 INFO L146 ILogger]: Found error trace [2019-05-23 11:23:43,056 INFO L146 ILogger]: trace histogram [10, 10, 10, 10, 10, 10, 10, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:23:43,056 INFO L146 ILogger]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:23:43,056 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:23:43,057 INFO L146 ILogger]: Analyzing trace with hash 1463127521, now seen corresponding path program 14 times [2019-05-23 11:23:43,057 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:23:43,057 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:23:43,057 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:43,058 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:23:43,058 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:43,069 ERROR L146 ILogger]: Caught known exception: Unsupported non-linear arithmetic [2019-05-23 11:23:43,069 INFO L146 ILogger]: Advancing trace checker [2019-05-23 11:23:43,069 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-05-23 11:23:43,092 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:23:44,342 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:23:44,342 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:44,344 INFO L146 ILogger]: Trace formula consists of 523 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:23:44,347 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:23:44,493 INFO L146 ILogger]: Checked inductivity of 880 backedges. 75 proven. 60 refuted. 0 times theorem prover too weak. 745 trivial. 0 not checked. [2019-05-23 11:23:44,511 INFO L146 ILogger]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-05-23 11:23:44,511 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2019-05-23 11:23:44,511 INFO L146 ILogger]: Interpolant automaton has 13 states [2019-05-23 11:23:44,511 INFO L146 ILogger]: Constructing interpolant automaton starting with 13 interpolants. [2019-05-23 11:23:44,512 INFO L146 ILogger]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2019-05-23 11:23:44,512 INFO L146 ILogger]: Start difference. First operand 526 states and 552 transitions. Second operand 13 states. [2019-05-23 11:23:44,918 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:23:44,919 INFO L146 ILogger]: Finished difference Result 961 states and 1017 transitions. [2019-05-23 11:23:44,921 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-05-23 11:23:44,921 INFO L146 ILogger]: Start accepts. Automaton has 13 states. Word has length 339 [2019-05-23 11:23:44,922 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:23:44,925 INFO L146 ILogger]: With dead ends: 961 [2019-05-23 11:23:44,925 INFO L146 ILogger]: Without dead ends: 551 [2019-05-23 11:23:44,926 INFO L146 ILogger]: 0 DeclaredPredicates, 348 GetRequests, 327 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=178, Invalid=328, Unknown=0, NotChecked=0, Total=506 [2019-05-23 11:23:44,927 INFO L146 ILogger]: Start minimizeSevpa. Operand 551 states. [2019-05-23 11:23:44,934 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 551 to 551. [2019-05-23 11:23:44,934 INFO L146 ILogger]: Start removeUnreachable. Operand 551 states. [2019-05-23 11:23:44,935 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 551 states to 551 states and 577 transitions. [2019-05-23 11:23:44,935 INFO L146 ILogger]: Start accepts. Automaton has 551 states and 577 transitions. Word has length 339 [2019-05-23 11:23:44,936 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:23:44,936 INFO L146 ILogger]: Abstraction has 551 states and 577 transitions. [2019-05-23 11:23:44,936 INFO L146 ILogger]: Interpolant automaton has 13 states. [2019-05-23 11:23:44,936 INFO L146 ILogger]: Start isEmpty. Operand 551 states and 577 transitions. [2019-05-23 11:23:44,938 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 355 [2019-05-23 11:23:44,938 INFO L146 ILogger]: Found error trace [2019-05-23 11:23:44,939 INFO L146 ILogger]: trace histogram [10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:23:44,939 INFO L146 ILogger]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:23:44,939 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:23:44,939 INFO L146 ILogger]: Analyzing trace with hash 1206794161, now seen corresponding path program 15 times [2019-05-23 11:23:44,939 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:23:44,939 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:23:44,940 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:44,940 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:23:44,940 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:44,952 ERROR L146 ILogger]: Caught known exception: Unsupported non-linear arithmetic [2019-05-23 11:23:44,952 INFO L146 ILogger]: Advancing trace checker [2019-05-23 11:23:44,952 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-05-23 11:23:44,971 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2