java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -s config/svcomp-Reach-32bit-Automizer_Default.epf --rcfgbuilder.command.for.external.solver 'z3 SMTLIB2_COMPLIANT=true -memory:4096 -smt2 -in -t:12000' -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --rcfgbuilder.size.of.a.code.block SingleStatement -i /storage/repos/svcomp/c/array-crafted/xor3_true-unreach-call.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-7aa59a0 [2019-05-23 11:28:49,539 INFO L146 ILogger]: Resetting all preferences to default values... [2019-05-23 11:28:49,543 INFO L146 ILogger]: Resetting UltimateCore preferences to default values [2019-05-23 11:28:49,557 INFO L146 ILogger]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-05-23 11:28:49,557 INFO L146 ILogger]: Resetting Boogie Preprocessor preferences to default values [2019-05-23 11:28:49,558 INFO L146 ILogger]: Resetting Boogie Procedure Inliner preferences to default values [2019-05-23 11:28:49,560 INFO L146 ILogger]: Resetting Abstract Interpretation preferences to default values [2019-05-23 11:28:49,562 INFO L146 ILogger]: Resetting LassoRanker preferences to default values [2019-05-23 11:28:49,563 INFO L146 ILogger]: Resetting Reaching Definitions preferences to default values [2019-05-23 11:28:49,564 INFO L146 ILogger]: Resetting SyntaxChecker preferences to default values [2019-05-23 11:28:49,565 INFO L146 ILogger]: Büchi Program Product provides no preferences, ignoring... [2019-05-23 11:28:49,565 INFO L146 ILogger]: Resetting LTL2Aut preferences to default values [2019-05-23 11:28:49,566 INFO L146 ILogger]: Resetting PEA to Boogie preferences to default values [2019-05-23 11:28:49,569 INFO L146 ILogger]: Resetting BlockEncodingV2 preferences to default values [2019-05-23 11:28:49,573 INFO L146 ILogger]: Resetting ChcToBoogie preferences to default values [2019-05-23 11:28:49,574 INFO L146 ILogger]: Resetting AutomataScriptInterpreter preferences to default values [2019-05-23 11:28:49,575 INFO L146 ILogger]: Resetting BuchiAutomizer preferences to default values [2019-05-23 11:28:49,576 INFO L146 ILogger]: Resetting CACSL2BoogieTranslator preferences to default values [2019-05-23 11:28:49,584 INFO L146 ILogger]: Resetting CodeCheck preferences to default values [2019-05-23 11:28:49,588 INFO L146 ILogger]: Resetting InvariantSynthesis preferences to default values [2019-05-23 11:28:49,590 INFO L146 ILogger]: Resetting RCFGBuilder preferences to default values [2019-05-23 11:28:49,593 INFO L146 ILogger]: Resetting TraceAbstraction preferences to default values [2019-05-23 11:28:49,596 INFO L146 ILogger]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-05-23 11:28:49,598 INFO L146 ILogger]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-05-23 11:28:49,598 INFO L146 ILogger]: Resetting TreeAutomizer preferences to default values [2019-05-23 11:28:49,599 INFO L146 ILogger]: Resetting IcfgToChc preferences to default values [2019-05-23 11:28:49,600 INFO L146 ILogger]: Resetting IcfgTransformer preferences to default values [2019-05-23 11:28:49,601 INFO L146 ILogger]: ReqToTest provides no preferences, ignoring... [2019-05-23 11:28:49,602 INFO L146 ILogger]: Resetting Boogie Printer preferences to default values [2019-05-23 11:28:49,603 INFO L146 ILogger]: Resetting ChcSmtPrinter preferences to default values [2019-05-23 11:28:49,604 INFO L146 ILogger]: Resetting ReqPrinter preferences to default values [2019-05-23 11:28:49,605 INFO L146 ILogger]: Resetting Witness Printer preferences to default values [2019-05-23 11:28:49,606 INFO L146 ILogger]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-05-23 11:28:49,608 INFO L146 ILogger]: Resetting CDTParser preferences to default values [2019-05-23 11:28:49,608 INFO L146 ILogger]: AutomataScriptParser provides no preferences, ignoring... [2019-05-23 11:28:49,608 INFO L146 ILogger]: ReqParser provides no preferences, ignoring... [2019-05-23 11:28:49,609 INFO L146 ILogger]: Resetting SmtParser preferences to default values [2019-05-23 11:28:49,610 INFO L146 ILogger]: Resetting Witness Parser preferences to default values [2019-05-23 11:28:49,611 INFO L146 ILogger]: Finished resetting all preferences to default values... [2019-05-23 11:28:49,611 INFO L146 ILogger]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-05-23 11:28:49,631 INFO L146 ILogger]: Loading preferences was successful [2019-05-23 11:28:49,631 INFO L146 ILogger]: Preferences different from defaults after loading the file: [2019-05-23 11:28:49,634 INFO L146 ILogger]: Preferences of BlockEncodingV2 differ from their defaults: [2019-05-23 11:28:49,635 INFO L146 ILogger]: * Create parallel compositions if possible=false [2019-05-23 11:28:49,635 INFO L146 ILogger]: * Use SBE=true [2019-05-23 11:28:49,635 INFO L146 ILogger]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-05-23 11:28:49,635 INFO L146 ILogger]: * sizeof long=4 [2019-05-23 11:28:49,636 INFO L146 ILogger]: * Overapproximate operations on floating types=true [2019-05-23 11:28:49,636 INFO L146 ILogger]: * sizeof POINTER=4 [2019-05-23 11:28:49,636 INFO L146 ILogger]: * Check division by zero=IGNORE [2019-05-23 11:28:49,636 INFO L146 ILogger]: * Pointer to allocated memory at dereference=IGNORE [2019-05-23 11:28:49,636 INFO L146 ILogger]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-05-23 11:28:49,637 INFO L146 ILogger]: * Check array bounds for arrays that are off heap=IGNORE [2019-05-23 11:28:49,638 INFO L146 ILogger]: * sizeof long double=12 [2019-05-23 11:28:49,638 INFO L146 ILogger]: * Check if freed pointer was valid=false [2019-05-23 11:28:49,638 INFO L146 ILogger]: * Use constant arrays=true [2019-05-23 11:28:49,639 INFO L146 ILogger]: * Pointer base address is valid at dereference=IGNORE [2019-05-23 11:28:49,639 INFO L146 ILogger]: Preferences of RCFGBuilder differ from their defaults: [2019-05-23 11:28:49,639 INFO L146 ILogger]: * Size of a code block=SequenceOfStatements [2019-05-23 11:28:49,639 INFO L146 ILogger]: * To the following directory=./dump/ [2019-05-23 11:28:49,639 INFO L146 ILogger]: * SMT solver=External_DefaultMode [2019-05-23 11:28:49,640 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-05-23 11:28:49,640 INFO L146 ILogger]: Preferences of TraceAbstraction differ from their defaults: [2019-05-23 11:28:49,640 INFO L146 ILogger]: * Compute Interpolants along a Counterexample=FPandBP [2019-05-23 11:28:49,641 INFO L146 ILogger]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-05-23 11:28:49,641 INFO L146 ILogger]: * Trace refinement strategy=CAMEL [2019-05-23 11:28:49,641 INFO L146 ILogger]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-05-23 11:28:49,641 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-05-23 11:28:49,641 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 11:28:49,699 INFO L146 ILogger]: Repository-Root is: /tmp [2019-05-23 11:28:49,715 INFO L146 ILogger]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-05-23 11:28:49,720 INFO L146 ILogger]: [Toolchain 1]: Toolchain selected. [2019-05-23 11:28:49,722 INFO L146 ILogger]: Initializing CDTParser... [2019-05-23 11:28:49,722 INFO L146 ILogger]: CDTParser initialized [2019-05-23 11:28:49,723 INFO L146 ILogger]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/array-crafted/xor3_true-unreach-call.i [2019-05-23 11:28:49,781 INFO L146 ILogger]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c05ef733b/3a053b3e9a7d424297b7fa6f1c3cf429/FLAG854d1c4a1 [2019-05-23 11:28:50,200 INFO L146 ILogger]: Found 1 translation units. [2019-05-23 11:28:50,201 INFO L146 ILogger]: Scanning /storage/repos/svcomp/c/array-crafted/xor3_true-unreach-call.i [2019-05-23 11:28:50,206 INFO L146 ILogger]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c05ef733b/3a053b3e9a7d424297b7fa6f1c3cf429/FLAG854d1c4a1 [2019-05-23 11:28:50,591 INFO L146 ILogger]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c05ef733b/3a053b3e9a7d424297b7fa6f1c3cf429 [2019-05-23 11:28:50,605 INFO L146 ILogger]: ####################### [Toolchain 1] ####################### [2019-05-23 11:28:50,606 INFO L146 ILogger]: Walking toolchain with 5 elements. [2019-05-23 11:28:50,607 INFO L146 ILogger]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-05-23 11:28:50,607 INFO L146 ILogger]: Initializing CACSL2BoogieTranslator... [2019-05-23 11:28:50,611 INFO L146 ILogger]: CACSL2BoogieTranslator initialized [2019-05-23 11:28:50,612 INFO L146 ILogger]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:28:50" (1/1) ... [2019-05-23 11:28:50,615 INFO L146 ILogger]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22b7c04c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:28:50, skipping insertion in model container [2019-05-23 11:28:50,615 INFO L146 ILogger]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:28:50" (1/1) ... [2019-05-23 11:28:50,622 INFO L146 ILogger]: Starting translation in SV-COMP mode [2019-05-23 11:28:50,643 INFO L146 ILogger]: Built tables and reachable declarations [2019-05-23 11:28:50,823 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:28:50,832 INFO L146 ILogger]: Completed pre-run [2019-05-23 11:28:50,858 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:28:50,871 INFO L146 ILogger]: Completed translation [2019-05-23 11:28:50,871 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:28:50 WrapperNode [2019-05-23 11:28:50,872 INFO L146 ILogger]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-05-23 11:28:50,873 INFO L146 ILogger]: ------------------------Boogie Procedure Inliner---------------------------- [2019-05-23 11:28:50,873 INFO L146 ILogger]: Initializing Boogie Procedure Inliner... [2019-05-23 11:28:50,873 INFO L146 ILogger]: Boogie Procedure Inliner initialized [2019-05-23 11:28:50,882 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:28:50" (1/1) ... [2019-05-23 11:28:50,892 INFO L146 ILogger]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:28:50" (1/1) ... [2019-05-23 11:28:50,920 INFO L146 ILogger]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-05-23 11:28:50,920 INFO L146 ILogger]: ------------------------Boogie Preprocessor---------------------------- [2019-05-23 11:28:50,921 INFO L146 ILogger]: Initializing Boogie Preprocessor... [2019-05-23 11:28:50,921 INFO L146 ILogger]: Boogie Preprocessor initialized [2019-05-23 11:28:50,931 INFO L146 ILogger]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:28:50" (1/1) ... [2019-05-23 11:28:50,931 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:28:50" (1/1) ... [2019-05-23 11:28:50,934 INFO L146 ILogger]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:28:50" (1/1) ... [2019-05-23 11:28:50,936 INFO L146 ILogger]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:28:50" (1/1) ... [2019-05-23 11:28:50,952 INFO L146 ILogger]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:28:50" (1/1) ... [2019-05-23 11:28:50,958 INFO L146 ILogger]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:28:50" (1/1) ... [2019-05-23 11:28:50,960 INFO L146 ILogger]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:28:50" (1/1) ... [2019-05-23 11:28:51,047 INFO L146 ILogger]: ------------------------ END Boogie Preprocessor---------------------------- [2019-05-23 11:28:51,047 INFO L146 ILogger]: ------------------------RCFGBuilder---------------------------- [2019-05-23 11:28:51,047 INFO L146 ILogger]: Initializing RCFGBuilder... [2019-05-23 11:28:51,048 INFO L146 ILogger]: RCFGBuilder initialized [2019-05-23 11:28:51,049 INFO L146 ILogger]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:28:50" (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 11:28:51,115 INFO L146 ILogger]: Found specification of procedure write~int [2019-05-23 11:28:51,115 INFO L146 ILogger]: Found specification of procedure ULTIMATE.start [2019-05-23 11:28:51,116 INFO L146 ILogger]: Found implementation of procedure ULTIMATE.start [2019-05-23 11:28:51,116 INFO L146 ILogger]: Found specification of procedure read~int [2019-05-23 11:28:51,116 INFO L146 ILogger]: Found specification of procedure #Ultimate.allocOnStack [2019-05-23 11:28:51,116 INFO L146 ILogger]: Found specification of procedure ULTIMATE.dealloc [2019-05-23 11:28:51,749 INFO L146 ILogger]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-05-23 11:28:51,750 INFO L146 ILogger]: Removed 15 assume(true) statements. [2019-05-23 11:28:51,751 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:28:51 BoogieIcfgContainer [2019-05-23 11:28:51,751 INFO L146 ILogger]: ------------------------ END RCFGBuilder---------------------------- [2019-05-23 11:28:51,752 INFO L146 ILogger]: ------------------------TraceAbstraction---------------------------- [2019-05-23 11:28:51,752 INFO L146 ILogger]: Initializing TraceAbstraction... [2019-05-23 11:28:51,755 INFO L146 ILogger]: TraceAbstraction initialized [2019-05-23 11:28:51,756 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.05 11:28:50" (1/3) ... [2019-05-23 11:28:51,757 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73d4f464 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:28:51, skipping insertion in model container [2019-05-23 11:28:51,757 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:28:50" (2/3) ... [2019-05-23 11:28:51,757 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73d4f464 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:28:51, skipping insertion in model container [2019-05-23 11:28:51,757 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:28:51" (3/3) ... [2019-05-23 11:28:51,759 INFO L146 ILogger]: Analyzing ICFG xor3_true-unreach-call.i [2019-05-23 11:28:51,769 INFO L146 ILogger]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-05-23 11:28:51,777 INFO L146 ILogger]: Appying trace abstraction to program that has 1 error locations. [2019-05-23 11:28:51,793 INFO L146 ILogger]: Starting to check reachability of 1 error locations. [2019-05-23 11:28:51,822 INFO L146 ILogger]: Using default assertion order modulation [2019-05-23 11:28:51,823 INFO L146 ILogger]: Interprodecural is true [2019-05-23 11:28:51,823 INFO L146 ILogger]: Hoare is true [2019-05-23 11:28:51,823 INFO L146 ILogger]: Compute interpolants for FPandBP [2019-05-23 11:28:51,824 INFO L146 ILogger]: Backedges is STRAIGHT_LINE [2019-05-23 11:28:51,824 INFO L146 ILogger]: Determinization is PREDICATE_ABSTRACTION [2019-05-23 11:28:51,824 INFO L146 ILogger]: Difference is false [2019-05-23 11:28:51,824 INFO L146 ILogger]: Minimize is MINIMIZE_SEVPA [2019-05-23 11:28:51,824 INFO L146 ILogger]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-05-23 11:28:51,842 INFO L146 ILogger]: Start isEmpty. Operand 111 states. [2019-05-23 11:28:51,851 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 75 [2019-05-23 11:28:51,851 INFO L146 ILogger]: Found error trace [2019-05-23 11:28:51,852 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] [2019-05-23 11:28:51,854 INFO L146 ILogger]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:28:51,860 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:28:51,860 INFO L146 ILogger]: Analyzing trace with hash -744558543, now seen corresponding path program 1 times [2019-05-23 11:28:51,862 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:28:51,863 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:28:51,904 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:28:51,904 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:28:51,904 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:28:51,947 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:28:52,066 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 11:28:52,068 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:28:52,069 INFO L146 ILogger]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-05-23 11:28:52,073 INFO L146 ILogger]: Interpolant automaton has 3 states [2019-05-23 11:28:52,088 INFO L146 ILogger]: Constructing interpolant automaton starting with 3 interpolants. [2019-05-23 11:28:52,090 INFO L146 ILogger]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-05-23 11:28:52,093 INFO L146 ILogger]: Start difference. First operand 111 states. Second operand 3 states. [2019-05-23 11:28:52,247 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:28:52,247 INFO L146 ILogger]: Finished difference Result 211 states and 231 transitions. [2019-05-23 11:28:52,248 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-05-23 11:28:52,249 INFO L146 ILogger]: Start accepts. Automaton has 3 states. Word has length 74 [2019-05-23 11:28:52,250 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:28:52,264 INFO L146 ILogger]: With dead ends: 211 [2019-05-23 11:28:52,265 INFO L146 ILogger]: Without dead ends: 111 [2019-05-23 11:28:52,269 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 11:28:52,288 INFO L146 ILogger]: Start minimizeSevpa. Operand 111 states. [2019-05-23 11:28:52,311 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 111 to 106. [2019-05-23 11:28:52,313 INFO L146 ILogger]: Start removeUnreachable. Operand 106 states. [2019-05-23 11:28:52,315 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 106 states to 106 states and 110 transitions. [2019-05-23 11:28:52,317 INFO L146 ILogger]: Start accepts. Automaton has 106 states and 110 transitions. Word has length 74 [2019-05-23 11:28:52,317 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:28:52,317 INFO L146 ILogger]: Abstraction has 106 states and 110 transitions. [2019-05-23 11:28:52,318 INFO L146 ILogger]: Interpolant automaton has 3 states. [2019-05-23 11:28:52,318 INFO L146 ILogger]: Start isEmpty. Operand 106 states and 110 transitions. [2019-05-23 11:28:52,321 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 82 [2019-05-23 11:28:52,321 INFO L146 ILogger]: Found error trace [2019-05-23 11:28:52,322 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] [2019-05-23 11:28:52,322 INFO L146 ILogger]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:28:52,322 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:28:52,323 INFO L146 ILogger]: Analyzing trace with hash 490355334, now seen corresponding path program 1 times [2019-05-23 11:28:52,323 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:28:52,323 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:28:52,324 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:28:52,325 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:28:52,325 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:28:52,350 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:28:52,541 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 11:28:52,541 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:28:52,541 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 11:28:52,560 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:28:52,624 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:28:52,626 INFO L146 ILogger]: Trace formula consists of 142 conjuncts, 2 conjunts are in the unsatisfiable core [2019-05-23 11:28:52,633 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:28:52,680 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 11:28:52,708 INFO L146 ILogger]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-05-23 11:28:52,709 INFO L146 ILogger]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2019-05-23 11:28:52,710 INFO L146 ILogger]: Interpolant automaton has 6 states [2019-05-23 11:28:52,710 INFO L146 ILogger]: Constructing interpolant automaton starting with 6 interpolants. [2019-05-23 11:28:52,711 INFO L146 ILogger]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-05-23 11:28:52,711 INFO L146 ILogger]: Start difference. First operand 106 states and 110 transitions. Second operand 6 states. [2019-05-23 11:28:53,106 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:28:53,106 INFO L146 ILogger]: Finished difference Result 224 states and 235 transitions. [2019-05-23 11:28:53,107 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-05-23 11:28:53,107 INFO L146 ILogger]: Start accepts. Automaton has 6 states. Word has length 81 [2019-05-23 11:28:53,107 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:28:53,109 INFO L146 ILogger]: With dead ends: 224 [2019-05-23 11:28:53,109 INFO L146 ILogger]: Without dead ends: 136 [2019-05-23 11:28:53,111 INFO L146 ILogger]: 0 DeclaredPredicates, 87 GetRequests, 81 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 11:28:53,111 INFO L146 ILogger]: Start minimizeSevpa. Operand 136 states. [2019-05-23 11:28:53,120 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 136 to 116. [2019-05-23 11:28:53,120 INFO L146 ILogger]: Start removeUnreachable. Operand 116 states. [2019-05-23 11:28:53,122 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 116 states to 116 states and 120 transitions. [2019-05-23 11:28:53,122 INFO L146 ILogger]: Start accepts. Automaton has 116 states and 120 transitions. Word has length 81 [2019-05-23 11:28:53,122 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:28:53,123 INFO L146 ILogger]: Abstraction has 116 states and 120 transitions. [2019-05-23 11:28:53,123 INFO L146 ILogger]: Interpolant automaton has 6 states. [2019-05-23 11:28:53,123 INFO L146 ILogger]: Start isEmpty. Operand 116 states and 120 transitions. [2019-05-23 11:28:53,125 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 110 [2019-05-23 11:28:53,125 INFO L146 ILogger]: Found error trace [2019-05-23 11:28:53,125 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, 1, 1] [2019-05-23 11:28:53,125 INFO L146 ILogger]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:28:53,126 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:28:53,126 INFO L146 ILogger]: Analyzing trace with hash 1334643867, now seen corresponding path program 1 times [2019-05-23 11:28:53,126 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:28:53,126 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:28:53,127 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:28:53,128 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:28:53,128 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:28:53,166 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:28:53,288 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 11:28:53,289 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:28:53,289 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 11:28:53,306 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:28:53,350 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:28:53,351 INFO L146 ILogger]: Trace formula consists of 182 conjuncts, 2 conjunts are in the unsatisfiable core [2019-05-23 11:28:53,355 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:28:53,397 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 11:28:53,418 INFO L146 ILogger]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-05-23 11:28:53,419 INFO L146 ILogger]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2019-05-23 11:28:53,419 INFO L146 ILogger]: Interpolant automaton has 6 states [2019-05-23 11:28:53,420 INFO L146 ILogger]: Constructing interpolant automaton starting with 6 interpolants. [2019-05-23 11:28:53,420 INFO L146 ILogger]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-05-23 11:28:53,420 INFO L146 ILogger]: Start difference. First operand 116 states and 120 transitions. Second operand 6 states. [2019-05-23 11:28:53,898 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:28:53,898 INFO L146 ILogger]: Finished difference Result 231 states and 241 transitions. [2019-05-23 11:28:53,900 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-05-23 11:28:53,900 INFO L146 ILogger]: Start accepts. Automaton has 6 states. Word has length 109 [2019-05-23 11:28:53,901 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:28:53,903 INFO L146 ILogger]: With dead ends: 231 [2019-05-23 11:28:53,903 INFO L146 ILogger]: Without dead ends: 158 [2019-05-23 11:28:53,904 INFO L146 ILogger]: 0 DeclaredPredicates, 117 GetRequests, 111 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 11:28:53,905 INFO L146 ILogger]: Start minimizeSevpa. Operand 158 states. [2019-05-23 11:28:53,915 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 158 to 138. [2019-05-23 11:28:53,915 INFO L146 ILogger]: Start removeUnreachable. Operand 138 states. [2019-05-23 11:28:53,916 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 138 states to 138 states and 142 transitions. [2019-05-23 11:28:53,916 INFO L146 ILogger]: Start accepts. Automaton has 138 states and 142 transitions. Word has length 109 [2019-05-23 11:28:53,917 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:28:53,917 INFO L146 ILogger]: Abstraction has 138 states and 142 transitions. [2019-05-23 11:28:53,917 INFO L146 ILogger]: Interpolant automaton has 6 states. [2019-05-23 11:28:53,917 INFO L146 ILogger]: Start isEmpty. Operand 138 states and 142 transitions. [2019-05-23 11:28:53,919 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 138 [2019-05-23 11:28:53,919 INFO L146 ILogger]: Found error trace [2019-05-23 11:28:53,920 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, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:28:53,920 INFO L146 ILogger]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:28:53,920 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:28:53,920 INFO L146 ILogger]: Analyzing trace with hash -1124741697, now seen corresponding path program 1 times [2019-05-23 11:28:53,921 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:28:53,921 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:28:53,922 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:28:53,922 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:28:53,922 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:28:53,954 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:28:54,056 INFO L146 ILogger]: Checked inductivity of 37 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-05-23 11:28:54,056 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:28:54,057 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 11:28:54,069 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:28:54,126 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:28:54,128 INFO L146 ILogger]: Trace formula consists of 222 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 11:28:54,133 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:28:54,274 INFO L146 ILogger]: Checked inductivity of 37 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-05-23 11:28:54,293 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:28:54,294 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7] total 10 [2019-05-23 11:28:54,294 INFO L146 ILogger]: Interpolant automaton has 10 states [2019-05-23 11:28:54,294 INFO L146 ILogger]: Constructing interpolant automaton starting with 10 interpolants. [2019-05-23 11:28:54,295 INFO L146 ILogger]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2019-05-23 11:28:54,295 INFO L146 ILogger]: Start difference. First operand 138 states and 142 transitions. Second operand 10 states. [2019-05-23 11:28:54,883 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:28:54,884 INFO L146 ILogger]: Finished difference Result 275 states and 284 transitions. [2019-05-23 11:28:54,884 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-05-23 11:28:54,884 INFO L146 ILogger]: Start accepts. Automaton has 10 states. Word has length 137 [2019-05-23 11:28:54,884 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:28:54,886 INFO L146 ILogger]: With dead ends: 275 [2019-05-23 11:28:54,886 INFO L146 ILogger]: Without dead ends: 162 [2019-05-23 11:28:54,888 INFO L146 ILogger]: 0 DeclaredPredicates, 147 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2019-05-23 11:28:54,890 INFO L146 ILogger]: Start minimizeSevpa. Operand 162 states. [2019-05-23 11:28:54,902 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 162 to 152. [2019-05-23 11:28:54,902 INFO L146 ILogger]: Start removeUnreachable. Operand 152 states. [2019-05-23 11:28:54,903 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 152 states to 152 states and 156 transitions. [2019-05-23 11:28:54,903 INFO L146 ILogger]: Start accepts. Automaton has 152 states and 156 transitions. Word has length 137 [2019-05-23 11:28:54,904 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:28:54,908 INFO L146 ILogger]: Abstraction has 152 states and 156 transitions. [2019-05-23 11:28:54,908 INFO L146 ILogger]: Interpolant automaton has 10 states. [2019-05-23 11:28:54,908 INFO L146 ILogger]: Start isEmpty. Operand 152 states and 156 transitions. [2019-05-23 11:28:54,910 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 152 [2019-05-23 11:28:54,910 INFO L146 ILogger]: Found error trace [2019-05-23 11:28:54,914 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, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:28:54,914 INFO L146 ILogger]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:28:54,914 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:28:54,915 INFO L146 ILogger]: Analyzing trace with hash -975484602, now seen corresponding path program 2 times [2019-05-23 11:28:54,915 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:28:54,915 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:28:54,917 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:28:54,917 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:28:54,917 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:28:54,993 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:28:55,173 INFO L146 ILogger]: Checked inductivity of 60 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-05-23 11:28:55,173 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:28:55,173 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:28:55,182 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:28:55,238 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:28:55,238 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:28:55,239 INFO L146 ILogger]: Trace formula consists of 242 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 11:28:55,247 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:28:55,404 INFO L146 ILogger]: Checked inductivity of 60 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2019-05-23 11:28:55,422 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:28:55,422 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 14 [2019-05-23 11:28:55,423 INFO L146 ILogger]: Interpolant automaton has 14 states [2019-05-23 11:28:55,423 INFO L146 ILogger]: Constructing interpolant automaton starting with 14 interpolants. [2019-05-23 11:28:55,424 INFO L146 ILogger]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2019-05-23 11:28:55,424 INFO L146 ILogger]: Start difference. First operand 152 states and 156 transitions. Second operand 14 states. [2019-05-23 11:28:55,832 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:28:55,832 INFO L146 ILogger]: Finished difference Result 320 states and 331 transitions. [2019-05-23 11:28:55,832 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-05-23 11:28:55,832 INFO L146 ILogger]: Start accepts. Automaton has 14 states. Word has length 151 [2019-05-23 11:28:55,833 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:28:55,834 INFO L146 ILogger]: With dead ends: 320 [2019-05-23 11:28:55,834 INFO L146 ILogger]: Without dead ends: 200 [2019-05-23 11:28:55,835 INFO L146 ILogger]: 0 DeclaredPredicates, 173 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=120, Invalid=432, Unknown=0, NotChecked=0, Total=552 [2019-05-23 11:28:55,836 INFO L146 ILogger]: Start minimizeSevpa. Operand 200 states. [2019-05-23 11:28:55,845 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 200 to 180. [2019-05-23 11:28:55,845 INFO L146 ILogger]: Start removeUnreachable. Operand 180 states. [2019-05-23 11:28:55,846 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 180 states to 180 states and 184 transitions. [2019-05-23 11:28:55,847 INFO L146 ILogger]: Start accepts. Automaton has 180 states and 184 transitions. Word has length 151 [2019-05-23 11:28:55,849 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:28:55,849 INFO L146 ILogger]: Abstraction has 180 states and 184 transitions. [2019-05-23 11:28:55,849 INFO L146 ILogger]: Interpolant automaton has 14 states. [2019-05-23 11:28:55,849 INFO L146 ILogger]: Start isEmpty. Operand 180 states and 184 transitions. [2019-05-23 11:28:55,851 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 180 [2019-05-23 11:28:55,851 INFO L146 ILogger]: Found error trace [2019-05-23 11:28:55,852 INFO L146 ILogger]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:28:55,856 INFO L146 ILogger]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:28:55,856 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:28:55,857 INFO L146 ILogger]: Analyzing trace with hash 826407579, now seen corresponding path program 3 times [2019-05-23 11:28:55,857 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:28:55,857 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:28:55,858 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:28:55,858 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:28:55,858 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:28:55,921 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:28:56,564 INFO L146 ILogger]: Checked inductivity of 127 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2019-05-23 11:28:56,565 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:28:56,565 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:28:56,575 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:28:56,623 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-05-23 11:28:56,623 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:28:56,624 INFO L146 ILogger]: Trace formula consists of 232 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 11:28:56,628 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:28:56,738 INFO L146 ILogger]: Checked inductivity of 127 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2019-05-23 11:28:56,757 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:28:56,757 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7] total 16 [2019-05-23 11:28:56,758 INFO L146 ILogger]: Interpolant automaton has 16 states [2019-05-23 11:28:56,758 INFO L146 ILogger]: Constructing interpolant automaton starting with 16 interpolants. [2019-05-23 11:28:56,759 INFO L146 ILogger]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2019-05-23 11:28:56,759 INFO L146 ILogger]: Start difference. First operand 180 states and 184 transitions. Second operand 16 states. [2019-05-23 11:28:57,255 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:28:57,256 INFO L146 ILogger]: Finished difference Result 345 states and 354 transitions. [2019-05-23 11:28:57,256 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-05-23 11:28:57,256 INFO L146 ILogger]: Start accepts. Automaton has 16 states. Word has length 179 [2019-05-23 11:28:57,257 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:28:57,258 INFO L146 ILogger]: With dead ends: 345 [2019-05-23 11:28:57,258 INFO L146 ILogger]: Without dead ends: 204 [2019-05-23 11:28:57,259 INFO L146 ILogger]: 0 DeclaredPredicates, 201 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=165, Invalid=591, Unknown=0, NotChecked=0, Total=756 [2019-05-23 11:28:57,260 INFO L146 ILogger]: Start minimizeSevpa. Operand 204 states. [2019-05-23 11:28:57,267 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 204 to 194. [2019-05-23 11:28:57,267 INFO L146 ILogger]: Start removeUnreachable. Operand 194 states. [2019-05-23 11:28:57,268 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 194 states to 194 states and 198 transitions. [2019-05-23 11:28:57,268 INFO L146 ILogger]: Start accepts. Automaton has 194 states and 198 transitions. Word has length 179 [2019-05-23 11:28:57,268 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:28:57,269 INFO L146 ILogger]: Abstraction has 194 states and 198 transitions. [2019-05-23 11:28:57,269 INFO L146 ILogger]: Interpolant automaton has 16 states. [2019-05-23 11:28:57,269 INFO L146 ILogger]: Start isEmpty. Operand 194 states and 198 transitions. [2019-05-23 11:28:57,271 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 194 [2019-05-23 11:28:57,271 INFO L146 ILogger]: Found error trace [2019-05-23 11:28:57,271 INFO L146 ILogger]: trace histogram [5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2019-05-23 11:28:57,272 INFO L146 ILogger]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:28:57,272 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:28:57,272 INFO L146 ILogger]: Analyzing trace with hash -1269375300, now seen corresponding path program 4 times [2019-05-23 11:28:57,272 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:28:57,272 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:28:57,273 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:28:57,273 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:28:57,273 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:28:57,297 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:28:57,632 INFO L146 ILogger]: Checked inductivity of 171 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2019-05-23 11:28:57,632 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:28:57,633 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:28:57,641 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:28:57,715 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:28:57,715 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:28:57,716 INFO L146 ILogger]: Trace formula consists of 302 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:28:57,719 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:28:57,796 INFO L146 ILogger]: Checked inductivity of 171 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2019-05-23 11:28:57,816 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:28:57,816 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 15 [2019-05-23 11:28:57,817 INFO L146 ILogger]: Interpolant automaton has 15 states [2019-05-23 11:28:57,817 INFO L146 ILogger]: Constructing interpolant automaton starting with 15 interpolants. [2019-05-23 11:28:57,817 INFO L146 ILogger]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2019-05-23 11:28:57,817 INFO L146 ILogger]: Start difference. First operand 194 states and 198 transitions. Second operand 15 states. [2019-05-23 11:28:58,018 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:28:58,018 INFO L146 ILogger]: Finished difference Result 354 states and 362 transitions. [2019-05-23 11:28:58,024 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-05-23 11:28:58,024 INFO L146 ILogger]: Start accepts. Automaton has 15 states. Word has length 193 [2019-05-23 11:28:58,024 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:28:58,026 INFO L146 ILogger]: With dead ends: 354 [2019-05-23 11:28:58,026 INFO L146 ILogger]: Without dead ends: 206 [2019-05-23 11:28:58,027 INFO L146 ILogger]: 0 DeclaredPredicates, 215 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=196, Invalid=404, Unknown=0, NotChecked=0, Total=600 [2019-05-23 11:28:58,029 INFO L146 ILogger]: Start minimizeSevpa. Operand 206 states. [2019-05-23 11:28:58,036 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 206 to 201. [2019-05-23 11:28:58,037 INFO L146 ILogger]: Start removeUnreachable. Operand 201 states. [2019-05-23 11:28:58,038 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 201 states to 201 states and 205 transitions. [2019-05-23 11:28:58,038 INFO L146 ILogger]: Start accepts. Automaton has 201 states and 205 transitions. Word has length 193 [2019-05-23 11:28:58,038 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:28:58,038 INFO L146 ILogger]: Abstraction has 201 states and 205 transitions. [2019-05-23 11:28:58,038 INFO L146 ILogger]: Interpolant automaton has 15 states. [2019-05-23 11:28:58,039 INFO L146 ILogger]: Start isEmpty. Operand 201 states and 205 transitions. [2019-05-23 11:28:58,040 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 201 [2019-05-23 11:28:58,040 INFO L146 ILogger]: Found error trace [2019-05-23 11:28:58,041 INFO L146 ILogger]: trace histogram [6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2019-05-23 11:28:58,041 INFO L146 ILogger]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:28:58,041 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:28:58,042 INFO L146 ILogger]: Analyzing trace with hash -2060195022, now seen corresponding path program 5 times [2019-05-23 11:28:58,042 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:28:58,042 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:28:58,043 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:28:58,043 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:28:58,043 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:28:58,090 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:28:58,440 INFO L146 ILogger]: Checked inductivity of 207 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2019-05-23 11:28:58,440 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:28:58,440 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:28:58,449 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:28:58,584 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2019-05-23 11:28:58,584 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:28:58,585 INFO L146 ILogger]: Trace formula consists of 312 conjuncts, 8 conjunts are in the unsatisfiable core [2019-05-23 11:28:58,587 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:28:58,737 INFO L146 ILogger]: Checked inductivity of 207 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2019-05-23 11:28:58,767 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:28:58,768 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 9] total 22 [2019-05-23 11:28:58,768 INFO L146 ILogger]: Interpolant automaton has 22 states [2019-05-23 11:28:58,769 INFO L146 ILogger]: Constructing interpolant automaton starting with 22 interpolants. [2019-05-23 11:28:58,769 INFO L146 ILogger]: CoverageRelationStatistics Valid=86, Invalid=376, Unknown=0, NotChecked=0, Total=462 [2019-05-23 11:28:58,769 INFO L146 ILogger]: Start difference. First operand 201 states and 205 transitions. Second operand 22 states. [2019-05-23 11:28:59,393 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:28:59,394 INFO L146 ILogger]: Finished difference Result 397 states and 408 transitions. [2019-05-23 11:28:59,394 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2019-05-23 11:28:59,394 INFO L146 ILogger]: Start accepts. Automaton has 22 states. Word has length 200 [2019-05-23 11:28:59,395 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:28:59,397 INFO L146 ILogger]: With dead ends: 397 [2019-05-23 11:28:59,397 INFO L146 ILogger]: Without dead ends: 249 [2019-05-23 11:28:59,399 INFO L146 ILogger]: 0 DeclaredPredicates, 232 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 266 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=320, Invalid=1240, Unknown=0, NotChecked=0, Total=1560 [2019-05-23 11:28:59,399 INFO L146 ILogger]: Start minimizeSevpa. Operand 249 states. [2019-05-23 11:28:59,404 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 249 to 229. [2019-05-23 11:28:59,404 INFO L146 ILogger]: Start removeUnreachable. Operand 229 states. [2019-05-23 11:28:59,405 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 229 states to 229 states and 233 transitions. [2019-05-23 11:28:59,405 INFO L146 ILogger]: Start accepts. Automaton has 229 states and 233 transitions. Word has length 200 [2019-05-23 11:28:59,405 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:28:59,405 INFO L146 ILogger]: Abstraction has 229 states and 233 transitions. [2019-05-23 11:28:59,406 INFO L146 ILogger]: Interpolant automaton has 22 states. [2019-05-23 11:28:59,406 INFO L146 ILogger]: Start isEmpty. Operand 229 states and 233 transitions. [2019-05-23 11:28:59,407 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 229 [2019-05-23 11:28:59,407 INFO L146 ILogger]: Found error trace [2019-05-23 11:28:59,407 INFO L146 ILogger]: trace histogram [7, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2019-05-23 11:28:59,408 INFO L146 ILogger]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:28:59,408 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:28:59,408 INFO L146 ILogger]: Analyzing trace with hash -1969332747, now seen corresponding path program 6 times [2019-05-23 11:28:59,408 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:28:59,408 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:28:59,409 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:28:59,409 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:28:59,410 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:28:59,434 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:28:59,774 INFO L146 ILogger]: Checked inductivity of 316 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2019-05-23 11:28:59,774 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:28:59,774 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:28:59,785 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:28:59,917 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2019-05-23 11:28:59,917 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:28:59,919 INFO L146 ILogger]: Trace formula consists of 312 conjuncts, 10 conjunts are in the unsatisfiable core [2019-05-23 11:28:59,922 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:29:00,102 INFO L146 ILogger]: Checked inductivity of 316 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked. [2019-05-23 11:29:00,122 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:29:00,122 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 9] total 24 [2019-05-23 11:29:00,123 INFO L146 ILogger]: Interpolant automaton has 24 states [2019-05-23 11:29:00,123 INFO L146 ILogger]: Constructing interpolant automaton starting with 24 interpolants. [2019-05-23 11:29:00,124 INFO L146 ILogger]: CoverageRelationStatistics Valid=103, Invalid=449, Unknown=0, NotChecked=0, Total=552 [2019-05-23 11:29:00,124 INFO L146 ILogger]: Start difference. First operand 229 states and 233 transitions. Second operand 24 states. [2019-05-23 11:29:00,813 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:00,813 INFO L146 ILogger]: Finished difference Result 422 states and 431 transitions. [2019-05-23 11:29:00,814 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2019-05-23 11:29:00,814 INFO L146 ILogger]: Start accepts. Automaton has 24 states. Word has length 228 [2019-05-23 11:29:00,814 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:00,815 INFO L146 ILogger]: With dead ends: 422 [2019-05-23 11:29:00,815 INFO L146 ILogger]: Without dead ends: 253 [2019-05-23 11:29:00,817 INFO L146 ILogger]: 0 DeclaredPredicates, 264 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=395, Invalid=1497, Unknown=0, NotChecked=0, Total=1892 [2019-05-23 11:29:00,817 INFO L146 ILogger]: Start minimizeSevpa. Operand 253 states. [2019-05-23 11:29:00,822 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 253 to 243. [2019-05-23 11:29:00,822 INFO L146 ILogger]: Start removeUnreachable. Operand 243 states. [2019-05-23 11:29:00,823 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 243 states to 243 states and 247 transitions. [2019-05-23 11:29:00,823 INFO L146 ILogger]: Start accepts. Automaton has 243 states and 247 transitions. Word has length 228 [2019-05-23 11:29:00,823 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:00,824 INFO L146 ILogger]: Abstraction has 243 states and 247 transitions. [2019-05-23 11:29:00,824 INFO L146 ILogger]: Interpolant automaton has 24 states. [2019-05-23 11:29:00,824 INFO L146 ILogger]: Start isEmpty. Operand 243 states and 247 transitions. [2019-05-23 11:29:00,825 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 243 [2019-05-23 11:29:00,825 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:00,825 INFO L146 ILogger]: trace histogram [8, 8, 8, 8, 8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:29:00,826 INFO L146 ILogger]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:00,826 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:00,826 INFO L146 ILogger]: Analyzing trace with hash 1904402492, now seen corresponding path program 7 times [2019-05-23 11:29:00,826 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:00,826 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:00,827 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:00,827 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:29:00,828 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:00,851 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:01,098 INFO L146 ILogger]: Checked inductivity of 388 backedges. 0 proven. 204 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2019-05-23 11:29:01,098 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:29:01,098 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:29:01,109 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:29:01,170 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:01,172 INFO L146 ILogger]: Trace formula consists of 372 conjuncts, 18 conjunts are in the unsatisfiable core [2019-05-23 11:29:01,175 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:29:01,654 INFO L146 ILogger]: Checked inductivity of 388 backedges. 0 proven. 204 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2019-05-23 11:29:01,685 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:29:01,685 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2019-05-23 11:29:01,687 INFO L146 ILogger]: Interpolant automaton has 21 states [2019-05-23 11:29:01,687 INFO L146 ILogger]: Constructing interpolant automaton starting with 21 interpolants. [2019-05-23 11:29:01,688 INFO L146 ILogger]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2019-05-23 11:29:01,688 INFO L146 ILogger]: Start difference. First operand 243 states and 247 transitions. Second operand 21 states. [2019-05-23 11:29:02,053 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:02,053 INFO L146 ILogger]: Finished difference Result 431 states and 439 transitions. [2019-05-23 11:29:02,054 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2019-05-23 11:29:02,054 INFO L146 ILogger]: Start accepts. Automaton has 21 states. Word has length 242 [2019-05-23 11:29:02,054 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:02,055 INFO L146 ILogger]: With dead ends: 431 [2019-05-23 11:29:02,055 INFO L146 ILogger]: Without dead ends: 255 [2019-05-23 11:29:02,057 INFO L146 ILogger]: 0 DeclaredPredicates, 276 GetRequests, 241 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=427, Invalid=905, Unknown=0, NotChecked=0, Total=1332 [2019-05-23 11:29:02,057 INFO L146 ILogger]: Start minimizeSevpa. Operand 255 states. [2019-05-23 11:29:02,062 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 255 to 250. [2019-05-23 11:29:02,062 INFO L146 ILogger]: Start removeUnreachable. Operand 250 states. [2019-05-23 11:29:02,063 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 250 states to 250 states and 254 transitions. [2019-05-23 11:29:02,063 INFO L146 ILogger]: Start accepts. Automaton has 250 states and 254 transitions. Word has length 242 [2019-05-23 11:29:02,063 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:02,063 INFO L146 ILogger]: Abstraction has 250 states and 254 transitions. [2019-05-23 11:29:02,063 INFO L146 ILogger]: Interpolant automaton has 21 states. [2019-05-23 11:29:02,064 INFO L146 ILogger]: Start isEmpty. Operand 250 states and 254 transitions. [2019-05-23 11:29:02,065 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 250 [2019-05-23 11:29:02,065 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:02,065 INFO L146 ILogger]: trace histogram [9, 9, 9, 9, 9, 9, 9, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:29:02,066 INFO L146 ILogger]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:02,066 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:02,066 INFO L146 ILogger]: Analyzing trace with hash 1648486022, now seen corresponding path program 8 times [2019-05-23 11:29:02,066 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:02,066 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:02,067 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:02,067 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:29:02,067 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:02,090 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:02,328 INFO L146 ILogger]: Checked inductivity of 445 backedges. 0 proven. 261 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2019-05-23 11:29:02,328 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:29:02,328 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:29:02,337 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:29:02,395 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:29:02,395 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:02,396 INFO L146 ILogger]: Trace formula consists of 382 conjuncts, 20 conjunts are in the unsatisfiable core [2019-05-23 11:29:02,400 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:29:02,500 INFO L146 ILogger]: Checked inductivity of 445 backedges. 0 proven. 261 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2019-05-23 11:29:02,520 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:29:02,520 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2019-05-23 11:29:02,521 INFO L146 ILogger]: Interpolant automaton has 23 states [2019-05-23 11:29:02,521 INFO L146 ILogger]: Constructing interpolant automaton starting with 23 interpolants. [2019-05-23 11:29:02,522 INFO L146 ILogger]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2019-05-23 11:29:02,522 INFO L146 ILogger]: Start difference. First operand 250 states and 254 transitions. Second operand 23 states. [2019-05-23 11:29:03,036 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:03,037 INFO L146 ILogger]: Finished difference Result 438 states and 446 transitions. [2019-05-23 11:29:03,039 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2019-05-23 11:29:03,039 INFO L146 ILogger]: Start accepts. Automaton has 23 states. Word has length 249 [2019-05-23 11:29:03,039 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:03,041 INFO L146 ILogger]: With dead ends: 438 [2019-05-23 11:29:03,041 INFO L146 ILogger]: Without dead ends: 262 [2019-05-23 11:29:03,045 INFO L146 ILogger]: 0 DeclaredPredicates, 287 GetRequests, 248 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=524, Invalid=1116, Unknown=0, NotChecked=0, Total=1640 [2019-05-23 11:29:03,045 INFO L146 ILogger]: Start minimizeSevpa. Operand 262 states. [2019-05-23 11:29:03,050 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 262 to 257. [2019-05-23 11:29:03,050 INFO L146 ILogger]: Start removeUnreachable. Operand 257 states. [2019-05-23 11:29:03,051 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 257 states to 257 states and 261 transitions. [2019-05-23 11:29:03,051 INFO L146 ILogger]: Start accepts. Automaton has 257 states and 261 transitions. Word has length 249 [2019-05-23 11:29:03,051 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:03,052 INFO L146 ILogger]: Abstraction has 257 states and 261 transitions. [2019-05-23 11:29:03,052 INFO L146 ILogger]: Interpolant automaton has 23 states. [2019-05-23 11:29:03,052 INFO L146 ILogger]: Start isEmpty. Operand 257 states and 261 transitions. [2019-05-23 11:29:03,053 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 257 [2019-05-23 11:29:03,053 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:03,054 INFO L146 ILogger]: trace histogram [10, 10, 10, 10, 10, 10, 10, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:29:03,054 INFO L146 ILogger]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:03,054 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:03,054 INFO L146 ILogger]: Analyzing trace with hash 986126588, now seen corresponding path program 9 times [2019-05-23 11:29:03,055 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:03,055 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:03,055 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:03,056 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:29:03,056 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:03,093 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:04,891 INFO L146 ILogger]: Checked inductivity of 509 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2019-05-23 11:29:04,891 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:29:04,891 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:29:04,900 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:29:04,997 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2019-05-23 11:29:04,997 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:04,998 INFO L146 ILogger]: Trace formula consists of 332 conjuncts, 10 conjunts are in the unsatisfiable core [2019-05-23 11:29:05,002 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:29:05,187 INFO L146 ILogger]: Checked inductivity of 509 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 463 trivial. 0 not checked. [2019-05-23 11:29:05,208 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:29:05,208 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 11] total 32 [2019-05-23 11:29:05,209 INFO L146 ILogger]: Interpolant automaton has 32 states [2019-05-23 11:29:05,209 INFO L146 ILogger]: Constructing interpolant automaton starting with 32 interpolants. [2019-05-23 11:29:05,209 INFO L146 ILogger]: CoverageRelationStatistics Valid=177, Invalid=815, Unknown=0, NotChecked=0, Total=992 [2019-05-23 11:29:05,209 INFO L146 ILogger]: Start difference. First operand 257 states and 261 transitions. Second operand 32 states. [2019-05-23 11:29:08,560 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:08,560 INFO L146 ILogger]: Finished difference Result 481 states and 492 transitions. [2019-05-23 11:29:08,560 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2019-05-23 11:29:08,561 INFO L146 ILogger]: Start accepts. Automaton has 32 states. Word has length 256 [2019-05-23 11:29:08,561 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:08,562 INFO L146 ILogger]: With dead ends: 481 [2019-05-23 11:29:08,562 INFO L146 ILogger]: Without dead ends: 305 [2019-05-23 11:29:08,564 INFO L146 ILogger]: 0 DeclaredPredicates, 314 GetRequests, 256 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 651 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=725, Invalid=2815, Unknown=0, NotChecked=0, Total=3540 [2019-05-23 11:29:08,564 INFO L146 ILogger]: Start minimizeSevpa. Operand 305 states. [2019-05-23 11:29:08,568 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 305 to 285. [2019-05-23 11:29:08,568 INFO L146 ILogger]: Start removeUnreachable. Operand 285 states. [2019-05-23 11:29:08,569 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 285 states to 285 states and 289 transitions. [2019-05-23 11:29:08,569 INFO L146 ILogger]: Start accepts. Automaton has 285 states and 289 transitions. Word has length 256 [2019-05-23 11:29:08,570 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:08,570 INFO L146 ILogger]: Abstraction has 285 states and 289 transitions. [2019-05-23 11:29:08,570 INFO L146 ILogger]: Interpolant automaton has 32 states. [2019-05-23 11:29:08,570 INFO L146 ILogger]: Start isEmpty. Operand 285 states and 289 transitions. [2019-05-23 11:29:08,571 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 285 [2019-05-23 11:29:08,571 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:08,572 INFO L146 ILogger]: trace histogram [11, 11, 11, 11, 11, 11, 11, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:29:08,572 INFO L146 ILogger]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:08,572 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:08,572 INFO L146 ILogger]: Analyzing trace with hash 947145873, now seen corresponding path program 10 times [2019-05-23 11:29:08,573 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:08,573 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:08,573 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:08,574 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:29:08,574 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:08,600 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:09,453 INFO L146 ILogger]: Checked inductivity of 667 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 271 trivial. 0 not checked. [2019-05-23 11:29:09,453 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:29:09,453 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:29:09,463 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:29:09,585 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:29:09,585 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:09,587 INFO L146 ILogger]: Trace formula consists of 432 conjuncts, 24 conjunts are in the unsatisfiable core [2019-05-23 11:29:09,592 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:29:09,701 INFO L146 ILogger]: Checked inductivity of 667 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 271 trivial. 0 not checked. [2019-05-23 11:29:09,722 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:29:09,722 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 27 [2019-05-23 11:29:09,723 INFO L146 ILogger]: Interpolant automaton has 27 states [2019-05-23 11:29:09,723 INFO L146 ILogger]: Constructing interpolant automaton starting with 27 interpolants. [2019-05-23 11:29:09,724 INFO L146 ILogger]: CoverageRelationStatistics Valid=195, Invalid=507, Unknown=0, NotChecked=0, Total=702 [2019-05-23 11:29:09,724 INFO L146 ILogger]: Start difference. First operand 285 states and 289 transitions. Second operand 27 states. [2019-05-23 11:29:10,509 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:10,510 INFO L146 ILogger]: Finished difference Result 494 states and 502 transitions. [2019-05-23 11:29:10,511 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2019-05-23 11:29:10,511 INFO L146 ILogger]: Start accepts. Automaton has 27 states. Word has length 284 [2019-05-23 11:29:10,511 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:10,513 INFO L146 ILogger]: With dead ends: 494 [2019-05-23 11:29:10,513 INFO L146 ILogger]: Without dead ends: 297 [2019-05-23 11:29:10,514 INFO L146 ILogger]: 0 DeclaredPredicates, 330 GetRequests, 283 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 439 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=748, Invalid=1604, Unknown=0, NotChecked=0, Total=2352 [2019-05-23 11:29:10,515 INFO L146 ILogger]: Start minimizeSevpa. Operand 297 states. [2019-05-23 11:29:10,519 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 297 to 292. [2019-05-23 11:29:10,519 INFO L146 ILogger]: Start removeUnreachable. Operand 292 states. [2019-05-23 11:29:10,520 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 292 states to 292 states and 296 transitions. [2019-05-23 11:29:10,520 INFO L146 ILogger]: Start accepts. Automaton has 292 states and 296 transitions. Word has length 284 [2019-05-23 11:29:10,521 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:10,521 INFO L146 ILogger]: Abstraction has 292 states and 296 transitions. [2019-05-23 11:29:10,521 INFO L146 ILogger]: Interpolant automaton has 27 states. [2019-05-23 11:29:10,521 INFO L146 ILogger]: Start isEmpty. Operand 292 states and 296 transitions. [2019-05-23 11:29:10,524 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 292 [2019-05-23 11:29:10,524 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:10,524 INFO L146 ILogger]: trace histogram [12, 12, 12, 12, 12, 12, 12, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:29:10,524 INFO L146 ILogger]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:10,525 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:10,525 INFO L146 ILogger]: Analyzing trace with hash -1745496485, now seen corresponding path program 11 times [2019-05-23 11:29:10,525 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:10,525 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:10,526 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:10,526 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:29:10,526 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:10,560 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:10,995 INFO L146 ILogger]: Checked inductivity of 745 backedges. 0 proven. 474 refuted. 0 times theorem prover too weak. 271 trivial. 0 not checked. [2019-05-23 11:29:10,995 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:29:10,995 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:29:11,004 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:29:11,175 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2019-05-23 11:29:11,176 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:11,177 INFO L146 ILogger]: Trace formula consists of 442 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:29:11,181 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:29:11,648 INFO L146 ILogger]: Checked inductivity of 745 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 670 trivial. 0 not checked. [2019-05-23 11:29:11,666 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:29:11,667 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 13] total 38 [2019-05-23 11:29:11,667 INFO L146 ILogger]: Interpolant automaton has 38 states [2019-05-23 11:29:11,668 INFO L146 ILogger]: Constructing interpolant automaton starting with 38 interpolants. [2019-05-23 11:29:11,668 INFO L146 ILogger]: CoverageRelationStatistics Valid=242, Invalid=1164, Unknown=0, NotChecked=0, Total=1406 [2019-05-23 11:29:11,669 INFO L146 ILogger]: Start difference. First operand 292 states and 296 transitions. Second operand 38 states. [2019-05-23 11:29:13,497 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:13,498 INFO L146 ILogger]: Finished difference Result 537 states and 548 transitions. [2019-05-23 11:29:13,498 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2019-05-23 11:29:13,498 INFO L146 ILogger]: Start accepts. Automaton has 38 states. Word has length 291 [2019-05-23 11:29:13,499 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:13,501 INFO L146 ILogger]: With dead ends: 537 [2019-05-23 11:29:13,501 INFO L146 ILogger]: Without dead ends: 340 [2019-05-23 11:29:13,504 INFO L146 ILogger]: 0 DeclaredPredicates, 361 GetRequests, 291 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 966 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1020, Invalid=4092, Unknown=0, NotChecked=0, Total=5112 [2019-05-23 11:29:13,505 INFO L146 ILogger]: Start minimizeSevpa. Operand 340 states. [2019-05-23 11:29:13,510 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 340 to 320. [2019-05-23 11:29:13,510 INFO L146 ILogger]: Start removeUnreachable. Operand 320 states. [2019-05-23 11:29:13,511 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 320 states to 320 states and 324 transitions. [2019-05-23 11:29:13,511 INFO L146 ILogger]: Start accepts. Automaton has 320 states and 324 transitions. Word has length 291 [2019-05-23 11:29:13,511 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:13,511 INFO L146 ILogger]: Abstraction has 320 states and 324 transitions. [2019-05-23 11:29:13,511 INFO L146 ILogger]: Interpolant automaton has 38 states. [2019-05-23 11:29:13,512 INFO L146 ILogger]: Start isEmpty. Operand 320 states and 324 transitions. [2019-05-23 11:29:13,513 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 320 [2019-05-23 11:29:13,513 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:13,514 INFO L146 ILogger]: trace histogram [13, 13, 13, 13, 13, 13, 13, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:29:13,514 INFO L146 ILogger]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:13,514 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:13,514 INFO L146 ILogger]: Analyzing trace with hash -1559080090, now seen corresponding path program 12 times [2019-05-23 11:29:13,514 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:13,515 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:13,515 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:13,515 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:29:13,516 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:13,539 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:13,997 INFO L146 ILogger]: Checked inductivity of 938 backedges. 0 proven. 559 refuted. 0 times theorem prover too weak. 379 trivial. 0 not checked. [2019-05-23 11:29:13,997 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:29:13,997 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:29:14,006 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:29:14,381 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2019-05-23 11:29:14,381 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:14,383 INFO L146 ILogger]: Trace formula consists of 372 conjuncts, 10 conjunts are in the unsatisfiable core [2019-05-23 11:29:14,386 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:29:14,608 INFO L146 ILogger]: Checked inductivity of 938 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 892 trivial. 0 not checked. [2019-05-23 11:29:14,627 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:29:14,627 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 11] total 38 [2019-05-23 11:29:14,628 INFO L146 ILogger]: Interpolant automaton has 38 states [2019-05-23 11:29:14,628 INFO L146 ILogger]: Constructing interpolant automaton starting with 38 interpolants. [2019-05-23 11:29:14,629 INFO L146 ILogger]: CoverageRelationStatistics Valid=258, Invalid=1148, Unknown=0, NotChecked=0, Total=1406 [2019-05-23 11:29:14,629 INFO L146 ILogger]: Start difference. First operand 320 states and 324 transitions. Second operand 38 states. [2019-05-23 11:29:15,692 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:15,692 INFO L146 ILogger]: Finished difference Result 562 states and 571 transitions. [2019-05-23 11:29:15,692 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2019-05-23 11:29:15,693 INFO L146 ILogger]: Start accepts. Automaton has 38 states. Word has length 319 [2019-05-23 11:29:15,693 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:15,694 INFO L146 ILogger]: With dead ends: 562 [2019-05-23 11:29:15,695 INFO L146 ILogger]: Without dead ends: 344 [2019-05-23 11:29:15,697 INFO L146 ILogger]: 0 DeclaredPredicates, 381 GetRequests, 311 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 954 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1100, Invalid=4012, Unknown=0, NotChecked=0, Total=5112 [2019-05-23 11:29:15,697 INFO L146 ILogger]: Start minimizeSevpa. Operand 344 states. [2019-05-23 11:29:15,702 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 344 to 334. [2019-05-23 11:29:15,702 INFO L146 ILogger]: Start removeUnreachable. Operand 334 states. [2019-05-23 11:29:15,703 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 334 states to 334 states and 338 transitions. [2019-05-23 11:29:15,703 INFO L146 ILogger]: Start accepts. Automaton has 334 states and 338 transitions. Word has length 319 [2019-05-23 11:29:15,704 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:15,704 INFO L146 ILogger]: Abstraction has 334 states and 338 transitions. [2019-05-23 11:29:15,704 INFO L146 ILogger]: Interpolant automaton has 38 states. [2019-05-23 11:29:15,704 INFO L146 ILogger]: Start isEmpty. Operand 334 states and 338 transitions. [2019-05-23 11:29:15,706 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 334 [2019-05-23 11:29:15,706 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:15,706 INFO L146 ILogger]: trace histogram [14, 14, 14, 14, 14, 14, 14, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:29:15,706 INFO L146 ILogger]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:15,707 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:15,707 INFO L146 ILogger]: Analyzing trace with hash 246463935, now seen corresponding path program 13 times [2019-05-23 11:29:15,707 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:15,707 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:15,708 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:15,708 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:29:15,708 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:15,733 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:16,851 INFO L146 ILogger]: Checked inductivity of 1059 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 408 trivial. 0 not checked. [2019-05-23 11:29:16,851 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:29:16,851 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:29:16,861 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:29:16,945 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:16,947 INFO L146 ILogger]: Trace formula consists of 502 conjuncts, 30 conjunts are in the unsatisfiable core [2019-05-23 11:29:16,951 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:29:17,617 INFO L146 ILogger]: Checked inductivity of 1059 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 408 trivial. 0 not checked. [2019-05-23 11:29:17,673 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:29:17,673 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 33 [2019-05-23 11:29:17,674 INFO L146 ILogger]: Interpolant automaton has 33 states [2019-05-23 11:29:17,674 INFO L146 ILogger]: Constructing interpolant automaton starting with 33 interpolants. [2019-05-23 11:29:17,675 INFO L146 ILogger]: CoverageRelationStatistics Valid=288, Invalid=768, Unknown=0, NotChecked=0, Total=1056 [2019-05-23 11:29:17,675 INFO L146 ILogger]: Start difference. First operand 334 states and 338 transitions. Second operand 33 states. [2019-05-23 11:29:18,563 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:18,563 INFO L146 ILogger]: Finished difference Result 571 states and 579 transitions. [2019-05-23 11:29:18,564 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2019-05-23 11:29:18,564 INFO L146 ILogger]: Start accepts. Automaton has 33 states. Word has length 333 [2019-05-23 11:29:18,564 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:18,565 INFO L146 ILogger]: With dead ends: 571 [2019-05-23 11:29:18,565 INFO L146 ILogger]: Without dead ends: 346 [2019-05-23 11:29:18,567 INFO L146 ILogger]: 0 DeclaredPredicates, 391 GetRequests, 332 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 688 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1159, Invalid=2501, Unknown=0, NotChecked=0, Total=3660 [2019-05-23 11:29:18,568 INFO L146 ILogger]: Start minimizeSevpa. Operand 346 states. [2019-05-23 11:29:18,572 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 346 to 341. [2019-05-23 11:29:18,572 INFO L146 ILogger]: Start removeUnreachable. Operand 341 states. [2019-05-23 11:29:18,573 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 341 states to 341 states and 345 transitions. [2019-05-23 11:29:18,573 INFO L146 ILogger]: Start accepts. Automaton has 341 states and 345 transitions. Word has length 333 [2019-05-23 11:29:18,574 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:18,574 INFO L146 ILogger]: Abstraction has 341 states and 345 transitions. [2019-05-23 11:29:18,574 INFO L146 ILogger]: Interpolant automaton has 33 states. [2019-05-23 11:29:18,574 INFO L146 ILogger]: Start isEmpty. Operand 341 states and 345 transitions. [2019-05-23 11:29:18,576 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 341 [2019-05-23 11:29:18,576 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:18,576 INFO L146 ILogger]: trace histogram [15, 15, 15, 15, 15, 15, 15, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:29:18,576 INFO L146 ILogger]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:18,577 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:18,577 INFO L146 ILogger]: Analyzing trace with hash -1089246923, now seen corresponding path program 14 times [2019-05-23 11:29:18,577 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:18,577 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:18,578 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:18,578 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:29:18,578 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:18,602 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:20,202 INFO L146 ILogger]: Checked inductivity of 1158 backedges. 0 proven. 750 refuted. 0 times theorem prover too weak. 408 trivial. 0 not checked. [2019-05-23 11:29:20,202 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:29:20,202 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:29:20,211 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:29:20,284 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:29:20,284 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:20,286 INFO L146 ILogger]: Trace formula consists of 512 conjuncts, 32 conjunts are in the unsatisfiable core [2019-05-23 11:29:20,289 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:29:20,400 INFO L146 ILogger]: Checked inductivity of 1158 backedges. 0 proven. 750 refuted. 0 times theorem prover too weak. 408 trivial. 0 not checked. [2019-05-23 11:29:20,418 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:29:20,419 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 35 [2019-05-23 11:29:20,419 INFO L146 ILogger]: Interpolant automaton has 35 states [2019-05-23 11:29:20,419 INFO L146 ILogger]: Constructing interpolant automaton starting with 35 interpolants. [2019-05-23 11:29:20,420 INFO L146 ILogger]: CoverageRelationStatistics Valid=323, Invalid=867, Unknown=0, NotChecked=0, Total=1190 [2019-05-23 11:29:20,420 INFO L146 ILogger]: Start difference. First operand 341 states and 345 transitions. Second operand 35 states. [2019-05-23 11:29:21,061 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:21,061 INFO L146 ILogger]: Finished difference Result 578 states and 586 transitions. [2019-05-23 11:29:21,067 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2019-05-23 11:29:21,067 INFO L146 ILogger]: Start accepts. Automaton has 35 states. Word has length 340 [2019-05-23 11:29:21,067 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:21,069 INFO L146 ILogger]: With dead ends: 578 [2019-05-23 11:29:21,069 INFO L146 ILogger]: Without dead ends: 353 [2019-05-23 11:29:21,071 INFO L146 ILogger]: 0 DeclaredPredicates, 402 GetRequests, 339 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 783 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1316, Invalid=2844, Unknown=0, NotChecked=0, Total=4160 [2019-05-23 11:29:21,072 INFO L146 ILogger]: Start minimizeSevpa. Operand 353 states. [2019-05-23 11:29:21,076 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 353 to 348. [2019-05-23 11:29:21,076 INFO L146 ILogger]: Start removeUnreachable. Operand 348 states. [2019-05-23 11:29:21,077 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 348 states to 348 states and 352 transitions. [2019-05-23 11:29:21,077 INFO L146 ILogger]: Start accepts. Automaton has 348 states and 352 transitions. Word has length 340 [2019-05-23 11:29:21,078 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:21,078 INFO L146 ILogger]: Abstraction has 348 states and 352 transitions. [2019-05-23 11:29:21,078 INFO L146 ILogger]: Interpolant automaton has 35 states. [2019-05-23 11:29:21,078 INFO L146 ILogger]: Start isEmpty. Operand 348 states and 352 transitions. [2019-05-23 11:29:21,080 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 348 [2019-05-23 11:29:21,080 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:21,080 INFO L146 ILogger]: trace histogram [16, 16, 16, 16, 16, 16, 16, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:29:21,080 INFO L146 ILogger]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:21,081 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:21,081 INFO L146 ILogger]: Analyzing trace with hash -2026566401, now seen corresponding path program 15 times [2019-05-23 11:29:21,081 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:21,081 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:21,082 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:21,082 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:29:21,082 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:21,106 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:22,342 INFO L146 ILogger]: Checked inductivity of 1264 backedges. 0 proven. 856 refuted. 0 times theorem prover too weak. 408 trivial. 0 not checked. [2019-05-23 11:29:22,342 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:29:22,343 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:29:22,356 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:29:22,537 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2019-05-23 11:29:22,537 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:22,539 INFO L146 ILogger]: Trace formula consists of 382 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:29:22,543 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:29:22,854 INFO L146 ILogger]: Checked inductivity of 1264 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 1189 trivial. 0 not checked. [2019-05-23 11:29:22,873 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:29:22,873 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 13] total 46 [2019-05-23 11:29:22,874 INFO L146 ILogger]: Interpolant automaton has 46 states [2019-05-23 11:29:22,874 INFO L146 ILogger]: Constructing interpolant automaton starting with 46 interpolants. [2019-05-23 11:29:22,875 INFO L146 ILogger]: CoverageRelationStatistics Valid=370, Invalid=1700, Unknown=0, NotChecked=0, Total=2070 [2019-05-23 11:29:22,875 INFO L146 ILogger]: Start difference. First operand 348 states and 352 transitions. Second operand 46 states. [2019-05-23 11:29:24,237 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:24,237 INFO L146 ILogger]: Finished difference Result 597 states and 606 transitions. [2019-05-23 11:29:24,237 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2019-05-23 11:29:24,238 INFO L146 ILogger]: Start accepts. Automaton has 46 states. Word has length 347 [2019-05-23 11:29:24,238 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:24,239 INFO L146 ILogger]: With dead ends: 597 [2019-05-23 11:29:24,240 INFO L146 ILogger]: Without dead ends: 372 [2019-05-23 11:29:24,243 INFO L146 ILogger]: 0 DeclaredPredicates, 423 GetRequests, 337 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1462 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1620, Invalid=6036, Unknown=0, NotChecked=0, Total=7656 [2019-05-23 11:29:24,243 INFO L146 ILogger]: Start minimizeSevpa. Operand 372 states. [2019-05-23 11:29:24,249 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 372 to 362. [2019-05-23 11:29:24,249 INFO L146 ILogger]: Start removeUnreachable. Operand 362 states. [2019-05-23 11:29:24,250 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 362 states to 362 states and 366 transitions. [2019-05-23 11:29:24,250 INFO L146 ILogger]: Start accepts. Automaton has 362 states and 366 transitions. Word has length 347 [2019-05-23 11:29:24,250 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:24,250 INFO L146 ILogger]: Abstraction has 362 states and 366 transitions. [2019-05-23 11:29:24,250 INFO L146 ILogger]: Interpolant automaton has 46 states. [2019-05-23 11:29:24,251 INFO L146 ILogger]: Start isEmpty. Operand 362 states and 366 transitions. [2019-05-23 11:29:24,252 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 362 [2019-05-23 11:29:24,252 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:24,253 INFO L146 ILogger]: trace histogram [17, 17, 17, 17, 17, 17, 17, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:29:24,253 INFO L146 ILogger]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:24,253 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:24,253 INFO L146 ILogger]: Analyzing trace with hash 760365830, now seen corresponding path program 16 times [2019-05-23 11:29:24,253 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:24,254 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:24,254 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:24,254 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:29:24,255 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:24,279 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:24,832 INFO L146 ILogger]: Checked inductivity of 1413 backedges. 0 proven. 969 refuted. 0 times theorem prover too weak. 444 trivial. 0 not checked. [2019-05-23 11:29:24,833 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:29:24,833 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:29:24,844 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:29:25,148 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:29:25,148 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:25,151 INFO L146 ILogger]: Trace formula consists of 542 conjuncts, 36 conjunts are in the unsatisfiable core [2019-05-23 11:29:25,155 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:29:25,255 INFO L146 ILogger]: Checked inductivity of 1413 backedges. 0 proven. 969 refuted. 0 times theorem prover too weak. 444 trivial. 0 not checked. [2019-05-23 11:29:25,274 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:29:25,275 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 39 [2019-05-23 11:29:25,275 INFO L146 ILogger]: Interpolant automaton has 39 states [2019-05-23 11:29:25,275 INFO L146 ILogger]: Constructing interpolant automaton starting with 39 interpolants. [2019-05-23 11:29:25,276 INFO L146 ILogger]: CoverageRelationStatistics Valid=399, Invalid=1083, Unknown=0, NotChecked=0, Total=1482 [2019-05-23 11:29:25,276 INFO L146 ILogger]: Start difference. First operand 362 states and 366 transitions. Second operand 39 states. [2019-05-23 11:29:26,087 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:26,087 INFO L146 ILogger]: Finished difference Result 606 states and 614 transitions. [2019-05-23 11:29:26,087 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2019-05-23 11:29:26,087 INFO L146 ILogger]: Start accepts. Automaton has 39 states. Word has length 361 [2019-05-23 11:29:26,088 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:26,089 INFO L146 ILogger]: With dead ends: 606 [2019-05-23 11:29:26,089 INFO L146 ILogger]: Without dead ends: 374 [2019-05-23 11:29:26,091 INFO L146 ILogger]: 0 DeclaredPredicates, 431 GetRequests, 360 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 991 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1660, Invalid=3596, Unknown=0, NotChecked=0, Total=5256 [2019-05-23 11:29:26,092 INFO L146 ILogger]: Start minimizeSevpa. Operand 374 states. [2019-05-23 11:29:26,097 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 374 to 369. [2019-05-23 11:29:26,097 INFO L146 ILogger]: Start removeUnreachable. Operand 369 states. [2019-05-23 11:29:26,098 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 369 states to 369 states and 373 transitions. [2019-05-23 11:29:26,098 INFO L146 ILogger]: Start accepts. Automaton has 369 states and 373 transitions. Word has length 361 [2019-05-23 11:29:26,098 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:26,098 INFO L146 ILogger]: Abstraction has 369 states and 373 transitions. [2019-05-23 11:29:26,099 INFO L146 ILogger]: Interpolant automaton has 39 states. [2019-05-23 11:29:26,099 INFO L146 ILogger]: Start isEmpty. Operand 369 states and 373 transitions. [2019-05-23 11:29:26,101 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 369 [2019-05-23 11:29:26,101 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:26,101 INFO L146 ILogger]: trace histogram [18, 18, 18, 18, 18, 18, 18, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:29:26,101 INFO L146 ILogger]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:26,101 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:26,102 INFO L146 ILogger]: Analyzing trace with hash -1087782532, now seen corresponding path program 17 times [2019-05-23 11:29:26,102 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:26,102 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:26,103 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:26,103 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:29:26,103 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:26,143 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:28,556 INFO L146 ILogger]: Checked inductivity of 1533 backedges. 0 proven. 1089 refuted. 0 times theorem prover too weak. 444 trivial. 0 not checked. [2019-05-23 11:29:28,556 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:29:28,556 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 -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:29:28,565 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:29:29,887 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2019-05-23 11:29:29,887 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:29,891 INFO L146 ILogger]: Trace formula consists of 552 conjuncts, 38 conjunts are in the unsatisfiable core [2019-05-23 11:29:29,896 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:29:30,191 INFO L146 ILogger]: Checked inductivity of 1533 backedges. 0 proven. 1089 refuted. 0 times theorem prover too weak. 444 trivial. 0 not checked. [2019-05-23 11:29:30,211 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:29:30,211 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 41 [2019-05-23 11:29:30,211 INFO L146 ILogger]: Interpolant automaton has 41 states [2019-05-23 11:29:30,212 INFO L146 ILogger]: Constructing interpolant automaton starting with 41 interpolants. [2019-05-23 11:29:30,212 INFO L146 ILogger]: CoverageRelationStatistics Valid=440, Invalid=1200, Unknown=0, NotChecked=0, Total=1640 [2019-05-23 11:29:30,212 INFO L146 ILogger]: Start difference. First operand 369 states and 373 transitions. Second operand 41 states. [2019-05-23 11:29:31,045 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:31,046 INFO L146 ILogger]: Finished difference Result 613 states and 621 transitions. [2019-05-23 11:29:31,046 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2019-05-23 11:29:31,046 INFO L146 ILogger]: Start accepts. Automaton has 41 states. Word has length 368 [2019-05-23 11:29:31,046 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:31,048 INFO L146 ILogger]: With dead ends: 613 [2019-05-23 11:29:31,048 INFO L146 ILogger]: Without dead ends: 381 [2019-05-23 11:29:31,050 INFO L146 ILogger]: 0 DeclaredPredicates, 442 GetRequests, 367 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1104 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=1847, Invalid=4005, Unknown=0, NotChecked=0, Total=5852 [2019-05-23 11:29:31,051 INFO L146 ILogger]: Start minimizeSevpa. Operand 381 states. [2019-05-23 11:29:31,056 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 381 to 376. [2019-05-23 11:29:31,056 INFO L146 ILogger]: Start removeUnreachable. Operand 376 states. [2019-05-23 11:29:31,056 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 376 states to 376 states and 380 transitions. [2019-05-23 11:29:31,057 INFO L146 ILogger]: Start accepts. Automaton has 376 states and 380 transitions. Word has length 368 [2019-05-23 11:29:31,057 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:31,057 INFO L146 ILogger]: Abstraction has 376 states and 380 transitions. [2019-05-23 11:29:31,057 INFO L146 ILogger]: Interpolant automaton has 41 states. [2019-05-23 11:29:31,057 INFO L146 ILogger]: Start isEmpty. Operand 376 states and 380 transitions. [2019-05-23 11:29:31,059 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 376 [2019-05-23 11:29:31,059 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:31,060 INFO L146 ILogger]: trace histogram [19, 19, 19, 19, 19, 19, 19, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:29:31,060 INFO L146 ILogger]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:31,060 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:31,060 INFO L146 ILogger]: Analyzing trace with hash 1934832198, now seen corresponding path program 18 times [2019-05-23 11:29:31,060 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:31,061 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:31,061 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:31,061 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:29:31,061 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:31,087 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:31,832 INFO L146 ILogger]: Checked inductivity of 1660 backedges. 0 proven. 1216 refuted. 0 times theorem prover too weak. 444 trivial. 0 not checked. [2019-05-23 11:29:31,833 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:29:31,833 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 -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:29:31,842 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:29:32,536 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2019-05-23 11:29:32,536 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:32,539 INFO L146 ILogger]: Trace formula consists of 492 conjuncts, 14 conjunts are in the unsatisfiable core [2019-05-23 11:29:32,542 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:29:32,935 INFO L146 ILogger]: Checked inductivity of 1660 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 1549 trivial. 0 not checked. [2019-05-23 11:29:32,955 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:29:32,955 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 15] total 54 [2019-05-23 11:29:32,955 INFO L146 ILogger]: Interpolant automaton has 54 states [2019-05-23 11:29:32,956 INFO L146 ILogger]: Constructing interpolant automaton starting with 54 interpolants. [2019-05-23 11:29:32,956 INFO L146 ILogger]: CoverageRelationStatistics Valid=502, Invalid=2360, Unknown=0, NotChecked=0, Total=2862 [2019-05-23 11:29:32,956 INFO L146 ILogger]: Start difference. First operand 376 states and 380 transitions. Second operand 54 states. [2019-05-23 11:29:36,205 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:36,205 INFO L146 ILogger]: Finished difference Result 656 states and 667 transitions. [2019-05-23 11:29:36,206 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2019-05-23 11:29:36,206 INFO L146 ILogger]: Start accepts. Automaton has 54 states. Word has length 375 [2019-05-23 11:29:36,206 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:36,208 INFO L146 ILogger]: With dead ends: 656 [2019-05-23 11:29:36,209 INFO L146 ILogger]: Without dead ends: 424 [2019-05-23 11:29:36,210 INFO L146 ILogger]: 0 DeclaredPredicates, 477 GetRequests, 375 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2078 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=2240, Invalid=8472, Unknown=0, NotChecked=0, Total=10712 [2019-05-23 11:29:36,211 INFO L146 ILogger]: Start minimizeSevpa. Operand 424 states. [2019-05-23 11:29:36,216 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 424 to 404. [2019-05-23 11:29:36,216 INFO L146 ILogger]: Start removeUnreachable. Operand 404 states. [2019-05-23 11:29:36,217 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 404 states to 404 states and 408 transitions. [2019-05-23 11:29:36,217 INFO L146 ILogger]: Start accepts. Automaton has 404 states and 408 transitions. Word has length 375 [2019-05-23 11:29:36,217 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:36,217 INFO L146 ILogger]: Abstraction has 404 states and 408 transitions. [2019-05-23 11:29:36,217 INFO L146 ILogger]: Interpolant automaton has 54 states. [2019-05-23 11:29:36,218 INFO L146 ILogger]: Start isEmpty. Operand 404 states and 408 transitions. [2019-05-23 11:29:36,220 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 404 [2019-05-23 11:29:36,220 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:36,220 INFO L146 ILogger]: trace histogram [20, 20, 20, 20, 20, 20, 20, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:29:36,220 INFO L146 ILogger]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:36,220 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:36,221 INFO L146 ILogger]: Analyzing trace with hash 313561627, now seen corresponding path program 19 times [2019-05-23 11:29:36,221 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:36,221 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:36,222 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:36,222 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:29:36,222 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:36,247 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:37,042 INFO L146 ILogger]: Checked inductivity of 1923 backedges. 0 proven. 1350 refuted. 0 times theorem prover too weak. 573 trivial. 0 not checked. [2019-05-23 11:29:37,042 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:29:37,042 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:29:37,051 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:29:37,138 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:37,141 INFO L146 ILogger]: Trace formula consists of 602 conjuncts, 42 conjunts are in the unsatisfiable core [2019-05-23 11:29:37,146 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:29:37,356 INFO L146 ILogger]: Checked inductivity of 1923 backedges. 0 proven. 1350 refuted. 0 times theorem prover too weak. 573 trivial. 0 not checked. [2019-05-23 11:29:37,384 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:29:37,385 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 45 [2019-05-23 11:29:37,385 INFO L146 ILogger]: Interpolant automaton has 45 states [2019-05-23 11:29:37,386 INFO L146 ILogger]: Constructing interpolant automaton starting with 45 interpolants. [2019-05-23 11:29:37,386 INFO L146 ILogger]: CoverageRelationStatistics Valid=528, Invalid=1452, Unknown=0, NotChecked=0, Total=1980 [2019-05-23 11:29:37,386 INFO L146 ILogger]: Start difference. First operand 404 states and 408 transitions. Second operand 45 states. [2019-05-23 11:29:38,893 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:38,894 INFO L146 ILogger]: Finished difference Result 669 states and 677 transitions. [2019-05-23 11:29:38,896 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2019-05-23 11:29:38,897 INFO L146 ILogger]: Start accepts. Automaton has 45 states. Word has length 403 [2019-05-23 11:29:38,897 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:38,899 INFO L146 ILogger]: With dead ends: 669 [2019-05-23 11:29:38,899 INFO L146 ILogger]: Without dead ends: 416 [2019-05-23 11:29:38,900 INFO L146 ILogger]: 0 DeclaredPredicates, 485 GetRequests, 402 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1348 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=2251, Invalid=4889, Unknown=0, NotChecked=0, Total=7140 [2019-05-23 11:29:38,900 INFO L146 ILogger]: Start minimizeSevpa. Operand 416 states. [2019-05-23 11:29:38,906 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 416 to 411. [2019-05-23 11:29:38,906 INFO L146 ILogger]: Start removeUnreachable. Operand 411 states. [2019-05-23 11:29:38,907 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 411 states to 411 states and 415 transitions. [2019-05-23 11:29:38,907 INFO L146 ILogger]: Start accepts. Automaton has 411 states and 415 transitions. Word has length 403 [2019-05-23 11:29:38,907 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:38,908 INFO L146 ILogger]: Abstraction has 411 states and 415 transitions. [2019-05-23 11:29:38,908 INFO L146 ILogger]: Interpolant automaton has 45 states. [2019-05-23 11:29:38,908 INFO L146 ILogger]: Start isEmpty. Operand 411 states and 415 transitions. [2019-05-23 11:29:38,910 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 411 [2019-05-23 11:29:38,910 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:38,910 INFO L146 ILogger]: trace histogram [21, 21, 21, 21, 21, 21, 21, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:29:38,911 INFO L146 ILogger]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:38,911 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:38,911 INFO L146 ILogger]: Analyzing trace with hash 1215536401, now seen corresponding path program 20 times [2019-05-23 11:29:38,911 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:38,911 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:38,912 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:38,912 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:29:38,912 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:38,946 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:39,750 INFO L146 ILogger]: Checked inductivity of 2064 backedges. 0 proven. 1491 refuted. 0 times theorem prover too weak. 573 trivial. 0 not checked. [2019-05-23 11:29:39,750 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:29:39,751 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:29:39,760 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:29:39,860 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:29:39,860 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:39,863 INFO L146 ILogger]: Trace formula consists of 612 conjuncts, 44 conjunts are in the unsatisfiable core [2019-05-23 11:29:39,867 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:29:40,357 INFO L146 ILogger]: Checked inductivity of 2064 backedges. 0 proven. 1491 refuted. 0 times theorem prover too weak. 573 trivial. 0 not checked. [2019-05-23 11:29:40,376 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:29:40,376 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 47 [2019-05-23 11:29:40,377 INFO L146 ILogger]: Interpolant automaton has 47 states [2019-05-23 11:29:40,377 INFO L146 ILogger]: Constructing interpolant automaton starting with 47 interpolants. [2019-05-23 11:29:40,378 INFO L146 ILogger]: CoverageRelationStatistics Valid=575, Invalid=1587, Unknown=0, NotChecked=0, Total=2162 [2019-05-23 11:29:40,378 INFO L146 ILogger]: Start difference. First operand 411 states and 415 transitions. Second operand 47 states. [2019-05-23 11:29:41,460 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:41,460 INFO L146 ILogger]: Finished difference Result 676 states and 684 transitions. [2019-05-23 11:29:41,460 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2019-05-23 11:29:41,460 INFO L146 ILogger]: Start accepts. Automaton has 47 states. Word has length 410 [2019-05-23 11:29:41,461 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:41,462 INFO L146 ILogger]: With dead ends: 676 [2019-05-23 11:29:41,462 INFO L146 ILogger]: Without dead ends: 423 [2019-05-23 11:29:41,463 INFO L146 ILogger]: 0 DeclaredPredicates, 496 GetRequests, 409 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1479 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=2468, Invalid=5364, Unknown=0, NotChecked=0, Total=7832 [2019-05-23 11:29:41,464 INFO L146 ILogger]: Start minimizeSevpa. Operand 423 states. [2019-05-23 11:29:41,468 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 423 to 418. [2019-05-23 11:29:41,468 INFO L146 ILogger]: Start removeUnreachable. Operand 418 states. [2019-05-23 11:29:41,469 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 418 states to 418 states and 422 transitions. [2019-05-23 11:29:41,469 INFO L146 ILogger]: Start accepts. Automaton has 418 states and 422 transitions. Word has length 410 [2019-05-23 11:29:41,470 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:41,470 INFO L146 ILogger]: Abstraction has 418 states and 422 transitions. [2019-05-23 11:29:41,470 INFO L146 ILogger]: Interpolant automaton has 47 states. [2019-05-23 11:29:41,470 INFO L146 ILogger]: Start isEmpty. Operand 418 states and 422 transitions. [2019-05-23 11:29:41,472 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 418 [2019-05-23 11:29:41,472 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:41,472 INFO L146 ILogger]: trace histogram [22, 22, 22, 22, 22, 22, 22, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:29:41,473 INFO L146 ILogger]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:41,473 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:41,473 INFO L146 ILogger]: Analyzing trace with hash 1064464731, now seen corresponding path program 21 times [2019-05-23 11:29:41,473 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:41,473 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:41,474 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:41,474 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:29:41,474 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:41,503 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:42,286 INFO L146 ILogger]: Checked inductivity of 2212 backedges. 0 proven. 1639 refuted. 0 times theorem prover too weak. 573 trivial. 0 not checked. [2019-05-23 11:29:42,286 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:29:42,286 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:29:42,296 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:29:42,441 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2019-05-23 11:29:42,441 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:42,443 INFO L146 ILogger]: Trace formula consists of 432 conjuncts, 14 conjunts are in the unsatisfiable core [2019-05-23 11:29:42,446 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:29:42,813 INFO L146 ILogger]: Checked inductivity of 2212 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 2101 trivial. 0 not checked. [2019-05-23 11:29:42,834 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:29:42,834 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 15] total 60 [2019-05-23 11:29:42,835 INFO L146 ILogger]: Interpolant automaton has 60 states [2019-05-23 11:29:42,835 INFO L146 ILogger]: Constructing interpolant automaton starting with 60 interpolants. [2019-05-23 11:29:42,836 INFO L146 ILogger]: CoverageRelationStatistics Valid=637, Invalid=2903, Unknown=0, NotChecked=0, Total=3540 [2019-05-23 11:29:42,836 INFO L146 ILogger]: Start difference. First operand 418 states and 422 transitions. Second operand 60 states. [2019-05-23 11:29:45,118 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:45,118 INFO L146 ILogger]: Finished difference Result 695 states and 704 transitions. [2019-05-23 11:29:45,118 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2019-05-23 11:29:45,118 INFO L146 ILogger]: Start accepts. Automaton has 60 states. Word has length 417 [2019-05-23 11:29:45,118 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:45,120 INFO L146 ILogger]: With dead ends: 695 [2019-05-23 11:29:45,120 INFO L146 ILogger]: Without dead ends: 442 [2019-05-23 11:29:45,121 INFO L146 ILogger]: 0 DeclaredPredicates, 519 GetRequests, 405 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2591 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=2885, Invalid=10455, Unknown=0, NotChecked=0, Total=13340 [2019-05-23 11:29:45,122 INFO L146 ILogger]: Start minimizeSevpa. Operand 442 states. [2019-05-23 11:29:45,126 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 442 to 432. [2019-05-23 11:29:45,127 INFO L146 ILogger]: Start removeUnreachable. Operand 432 states. [2019-05-23 11:29:45,127 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 432 states to 432 states and 436 transitions. [2019-05-23 11:29:45,128 INFO L146 ILogger]: Start accepts. Automaton has 432 states and 436 transitions. Word has length 417 [2019-05-23 11:29:45,128 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:45,128 INFO L146 ILogger]: Abstraction has 432 states and 436 transitions. [2019-05-23 11:29:45,128 INFO L146 ILogger]: Interpolant automaton has 60 states. [2019-05-23 11:29:45,128 INFO L146 ILogger]: Start isEmpty. Operand 432 states and 436 transitions. [2019-05-23 11:29:45,131 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 432 [2019-05-23 11:29:45,131 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:45,131 INFO L146 ILogger]: trace histogram [23, 23, 23, 23, 23, 23, 23, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:29:45,131 INFO L146 ILogger]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:45,132 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:45,132 INFO L146 ILogger]: Analyzing trace with hash -1332457732, now seen corresponding path program 22 times [2019-05-23 11:29:45,132 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:45,132 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:45,133 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:45,133 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:29:45,133 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:45,163 INFO L146 ILogger]: Conjunction of SSA is unsat