java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -s config/svcomp-Reach-32bit-Automizer_Default.epf --rcfgbuilder.command.for.external.solver 'z3 SMTLIB2_COMPLIANT=true -memory:4096 -smt2 -in -t:12000' -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --rcfgbuilder.size.of.a.code.block SingleStatement -i /storage/repos/svcomp/c/reducercommutativity/max_true-unreach-call_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-7aa59a0 [2019-05-23 11:23:49,750 INFO L146 ILogger]: Resetting all preferences to default values... [2019-05-23 11:23:49,752 INFO L146 ILogger]: Resetting UltimateCore preferences to default values [2019-05-23 11:23:49,767 INFO L146 ILogger]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-05-23 11:23:49,767 INFO L146 ILogger]: Resetting Boogie Preprocessor preferences to default values [2019-05-23 11:23:49,768 INFO L146 ILogger]: Resetting Boogie Procedure Inliner preferences to default values [2019-05-23 11:23:49,772 INFO L146 ILogger]: Resetting Abstract Interpretation preferences to default values [2019-05-23 11:23:49,775 INFO L146 ILogger]: Resetting LassoRanker preferences to default values [2019-05-23 11:23:49,776 INFO L146 ILogger]: Resetting Reaching Definitions preferences to default values [2019-05-23 11:23:49,777 INFO L146 ILogger]: Resetting SyntaxChecker preferences to default values [2019-05-23 11:23:49,778 INFO L146 ILogger]: Büchi Program Product provides no preferences, ignoring... [2019-05-23 11:23:49,778 INFO L146 ILogger]: Resetting LTL2Aut preferences to default values [2019-05-23 11:23:49,780 INFO L146 ILogger]: Resetting PEA to Boogie preferences to default values [2019-05-23 11:23:49,782 INFO L146 ILogger]: Resetting BlockEncodingV2 preferences to default values [2019-05-23 11:23:49,783 INFO L146 ILogger]: Resetting ChcToBoogie preferences to default values [2019-05-23 11:23:49,787 INFO L146 ILogger]: Resetting AutomataScriptInterpreter preferences to default values [2019-05-23 11:23:49,788 INFO L146 ILogger]: Resetting BuchiAutomizer preferences to default values [2019-05-23 11:23:49,793 INFO L146 ILogger]: Resetting CACSL2BoogieTranslator preferences to default values [2019-05-23 11:23:49,795 INFO L146 ILogger]: Resetting CodeCheck preferences to default values [2019-05-23 11:23:49,797 INFO L146 ILogger]: Resetting InvariantSynthesis preferences to default values [2019-05-23 11:23:49,798 INFO L146 ILogger]: Resetting RCFGBuilder preferences to default values [2019-05-23 11:23:49,800 INFO L146 ILogger]: Resetting TraceAbstraction preferences to default values [2019-05-23 11:23:49,803 INFO L146 ILogger]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-05-23 11:23:49,803 INFO L146 ILogger]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-05-23 11:23:49,804 INFO L146 ILogger]: Resetting TreeAutomizer preferences to default values [2019-05-23 11:23:49,804 INFO L146 ILogger]: Resetting IcfgToChc preferences to default values [2019-05-23 11:23:49,805 INFO L146 ILogger]: Resetting IcfgTransformer preferences to default values [2019-05-23 11:23:49,806 INFO L146 ILogger]: ReqToTest provides no preferences, ignoring... [2019-05-23 11:23:49,806 INFO L146 ILogger]: Resetting Boogie Printer preferences to default values [2019-05-23 11:23:49,807 INFO L146 ILogger]: Resetting ChcSmtPrinter preferences to default values [2019-05-23 11:23:49,807 INFO L146 ILogger]: Resetting ReqPrinter preferences to default values [2019-05-23 11:23:49,808 INFO L146 ILogger]: Resetting Witness Printer preferences to default values [2019-05-23 11:23:49,809 INFO L146 ILogger]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-05-23 11:23:49,809 INFO L146 ILogger]: Resetting CDTParser preferences to default values [2019-05-23 11:23:49,810 INFO L146 ILogger]: AutomataScriptParser provides no preferences, ignoring... [2019-05-23 11:23:49,810 INFO L146 ILogger]: ReqParser provides no preferences, ignoring... [2019-05-23 11:23:49,810 INFO L146 ILogger]: Resetting SmtParser preferences to default values [2019-05-23 11:23:49,811 INFO L146 ILogger]: Resetting Witness Parser preferences to default values [2019-05-23 11:23:49,812 INFO L146 ILogger]: Finished resetting all preferences to default values... [2019-05-23 11:23:49,812 INFO L146 ILogger]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-05-23 11:23:49,835 INFO L146 ILogger]: Loading preferences was successful [2019-05-23 11:23:49,835 INFO L146 ILogger]: Preferences different from defaults after loading the file: [2019-05-23 11:23:49,837 INFO L146 ILogger]: Preferences of BlockEncodingV2 differ from their defaults: [2019-05-23 11:23:49,838 INFO L146 ILogger]: * Create parallel compositions if possible=false [2019-05-23 11:23:49,838 INFO L146 ILogger]: * Use SBE=true [2019-05-23 11:23:49,838 INFO L146 ILogger]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-05-23 11:23:49,838 INFO L146 ILogger]: * sizeof long=4 [2019-05-23 11:23:49,838 INFO L146 ILogger]: * Overapproximate operations on floating types=true [2019-05-23 11:23:49,839 INFO L146 ILogger]: * sizeof POINTER=4 [2019-05-23 11:23:49,840 INFO L146 ILogger]: * Check division by zero=IGNORE [2019-05-23 11:23:49,840 INFO L146 ILogger]: * Pointer to allocated memory at dereference=IGNORE [2019-05-23 11:23:49,840 INFO L146 ILogger]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-05-23 11:23:49,840 INFO L146 ILogger]: * Check array bounds for arrays that are off heap=IGNORE [2019-05-23 11:23:49,840 INFO L146 ILogger]: * sizeof long double=12 [2019-05-23 11:23:49,841 INFO L146 ILogger]: * Check if freed pointer was valid=false [2019-05-23 11:23:49,842 INFO L146 ILogger]: * Use constant arrays=true [2019-05-23 11:23:49,842 INFO L146 ILogger]: * Pointer base address is valid at dereference=IGNORE [2019-05-23 11:23:49,842 INFO L146 ILogger]: Preferences of RCFGBuilder differ from their defaults: [2019-05-23 11:23:49,842 INFO L146 ILogger]: * Size of a code block=SequenceOfStatements [2019-05-23 11:23:49,843 INFO L146 ILogger]: * To the following directory=./dump/ [2019-05-23 11:23:49,843 INFO L146 ILogger]: * SMT solver=External_DefaultMode [2019-05-23 11:23:49,843 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-05-23 11:23:49,843 INFO L146 ILogger]: Preferences of TraceAbstraction differ from their defaults: [2019-05-23 11:23:49,843 INFO L146 ILogger]: * Compute Interpolants along a Counterexample=FPandBP [2019-05-23 11:23:49,844 INFO L146 ILogger]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-05-23 11:23:49,844 INFO L146 ILogger]: * Trace refinement strategy=CAMEL [2019-05-23 11:23:49,844 INFO L146 ILogger]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-05-23 11:23:49,845 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-05-23 11:23:49,845 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 11:23:49,902 INFO L146 ILogger]: Repository-Root is: /tmp [2019-05-23 11:23:49,915 INFO L146 ILogger]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-05-23 11:23:49,920 INFO L146 ILogger]: [Toolchain 1]: Toolchain selected. [2019-05-23 11:23:49,921 INFO L146 ILogger]: Initializing CDTParser... [2019-05-23 11:23:49,922 INFO L146 ILogger]: CDTParser initialized [2019-05-23 11:23:49,922 INFO L146 ILogger]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/reducercommutativity/max_true-unreach-call_true-termination.i [2019-05-23 11:23:49,975 INFO L146 ILogger]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c266fd542/19b937039d644a3bbcbc4b4809c37103/FLAG904dfa34e [2019-05-23 11:23:50,394 INFO L146 ILogger]: Found 1 translation units. [2019-05-23 11:23:50,395 INFO L146 ILogger]: Scanning /storage/repos/svcomp/c/reducercommutativity/max_true-unreach-call_true-termination.i [2019-05-23 11:23:50,401 INFO L146 ILogger]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c266fd542/19b937039d644a3bbcbc4b4809c37103/FLAG904dfa34e [2019-05-23 11:23:50,787 INFO L146 ILogger]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c266fd542/19b937039d644a3bbcbc4b4809c37103 [2019-05-23 11:23:50,797 INFO L146 ILogger]: ####################### [Toolchain 1] ####################### [2019-05-23 11:23:50,799 INFO L146 ILogger]: Walking toolchain with 5 elements. [2019-05-23 11:23:50,800 INFO L146 ILogger]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-05-23 11:23:50,800 INFO L146 ILogger]: Initializing CACSL2BoogieTranslator... [2019-05-23 11:23:50,803 INFO L146 ILogger]: CACSL2BoogieTranslator initialized [2019-05-23 11:23:50,804 INFO L146 ILogger]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:23:50" (1/1) ... [2019-05-23 11:23:50,807 INFO L146 ILogger]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2faa56eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:23:50, skipping insertion in model container [2019-05-23 11:23:50,807 INFO L146 ILogger]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:23:50" (1/1) ... [2019-05-23 11:23:50,815 INFO L146 ILogger]: Starting translation in SV-COMP mode [2019-05-23 11:23:50,833 INFO L146 ILogger]: Built tables and reachable declarations [2019-05-23 11:23:51,046 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:23:51,064 INFO L146 ILogger]: Completed pre-run [2019-05-23 11:23:51,096 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:23:51,110 INFO L146 ILogger]: Completed translation [2019-05-23 11:23:51,110 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:23:51 WrapperNode [2019-05-23 11:23:51,111 INFO L146 ILogger]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-05-23 11:23:51,111 INFO L146 ILogger]: ------------------------Boogie Procedure Inliner---------------------------- [2019-05-23 11:23:51,111 INFO L146 ILogger]: Initializing Boogie Procedure Inliner... [2019-05-23 11:23:51,112 INFO L146 ILogger]: Boogie Procedure Inliner initialized [2019-05-23 11:23:51,119 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:23:51" (1/1) ... [2019-05-23 11:23:51,125 INFO L146 ILogger]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:23:51" (1/1) ... [2019-05-23 11:23:51,148 INFO L146 ILogger]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-05-23 11:23:51,149 INFO L146 ILogger]: ------------------------Boogie Preprocessor---------------------------- [2019-05-23 11:23:51,149 INFO L146 ILogger]: Initializing Boogie Preprocessor... [2019-05-23 11:23:51,149 INFO L146 ILogger]: Boogie Preprocessor initialized [2019-05-23 11:23:51,156 INFO L146 ILogger]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:23:51" (1/1) ... [2019-05-23 11:23:51,156 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:23:51" (1/1) ... [2019-05-23 11:23:51,164 INFO L146 ILogger]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:23:51" (1/1) ... [2019-05-23 11:23:51,165 INFO L146 ILogger]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:23:51" (1/1) ... [2019-05-23 11:23:51,177 INFO L146 ILogger]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:23:51" (1/1) ... [2019-05-23 11:23:51,283 INFO L146 ILogger]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:23:51" (1/1) ... [2019-05-23 11:23:51,285 INFO L146 ILogger]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:23:51" (1/1) ... [2019-05-23 11:23:51,287 INFO L146 ILogger]: ------------------------ END Boogie Preprocessor---------------------------- [2019-05-23 11:23:51,288 INFO L146 ILogger]: ------------------------RCFGBuilder---------------------------- [2019-05-23 11:23:51,288 INFO L146 ILogger]: Initializing RCFGBuilder... [2019-05-23 11:23:51,288 INFO L146 ILogger]: RCFGBuilder initialized [2019-05-23 11:23:51,290 INFO L146 ILogger]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:23:51" (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 11:23:51,348 INFO L146 ILogger]: Found specification of procedure write~int [2019-05-23 11:23:51,348 INFO L146 ILogger]: Found specification of procedure ULTIMATE.start [2019-05-23 11:23:51,348 INFO L146 ILogger]: Found implementation of procedure ULTIMATE.start [2019-05-23 11:23:51,348 INFO L146 ILogger]: Found specification of procedure read~int [2019-05-23 11:23:51,349 INFO L146 ILogger]: Found specification of procedure #Ultimate.allocOnStack [2019-05-23 11:23:51,349 INFO L146 ILogger]: Found specification of procedure ULTIMATE.dealloc [2019-05-23 11:23:52,099 INFO L146 ILogger]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-05-23 11:23:52,099 INFO L146 ILogger]: Removed 14 assume(true) statements. [2019-05-23 11:23:52,101 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:23:52 BoogieIcfgContainer [2019-05-23 11:23:52,101 INFO L146 ILogger]: ------------------------ END RCFGBuilder---------------------------- [2019-05-23 11:23:52,102 INFO L146 ILogger]: ------------------------TraceAbstraction---------------------------- [2019-05-23 11:23:52,102 INFO L146 ILogger]: Initializing TraceAbstraction... [2019-05-23 11:23:52,105 INFO L146 ILogger]: TraceAbstraction initialized [2019-05-23 11:23:52,106 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.05 11:23:50" (1/3) ... [2019-05-23 11:23:52,107 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78fb4f60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:23:52, skipping insertion in model container [2019-05-23 11:23:52,107 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:23:51" (2/3) ... [2019-05-23 11:23:52,107 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78fb4f60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:23:52, skipping insertion in model container [2019-05-23 11:23:52,108 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:23:52" (3/3) ... [2019-05-23 11:23:52,109 INFO L146 ILogger]: Analyzing ICFG max_true-unreach-call_true-termination.i [2019-05-23 11:23:52,119 INFO L146 ILogger]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-05-23 11:23:52,127 INFO L146 ILogger]: Appying trace abstraction to program that has 1 error locations. [2019-05-23 11:23:52,145 INFO L146 ILogger]: Starting to check reachability of 1 error locations. [2019-05-23 11:23:52,192 INFO L146 ILogger]: Using default assertion order modulation [2019-05-23 11:23:52,192 INFO L146 ILogger]: Interprodecural is true [2019-05-23 11:23:52,193 INFO L146 ILogger]: Hoare is true [2019-05-23 11:23:52,193 INFO L146 ILogger]: Compute interpolants for FPandBP [2019-05-23 11:23:52,194 INFO L146 ILogger]: Backedges is STRAIGHT_LINE [2019-05-23 11:23:52,194 INFO L146 ILogger]: Determinization is PREDICATE_ABSTRACTION [2019-05-23 11:23:52,194 INFO L146 ILogger]: Difference is false [2019-05-23 11:23:52,195 INFO L146 ILogger]: Minimize is MINIMIZE_SEVPA [2019-05-23 11:23:52,195 INFO L146 ILogger]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-05-23 11:23:52,222 INFO L146 ILogger]: Start isEmpty. Operand 120 states. [2019-05-23 11:23:52,234 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 72 [2019-05-23 11:23:52,235 INFO L146 ILogger]: Found error trace [2019-05-23 11:23:52,236 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] [2019-05-23 11:23:52,238 INFO L146 ILogger]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:23:52,243 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:23:52,243 INFO L146 ILogger]: Analyzing trace with hash 1281521103, now seen corresponding path program 1 times [2019-05-23 11:23:52,244 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:23:52,245 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:23:52,285 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:52,286 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:23:52,286 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:52,330 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:52,385 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 11:23:52,387 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:23:52,388 INFO L146 ILogger]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-05-23 11:23:52,392 INFO L146 ILogger]: Interpolant automaton has 2 states [2019-05-23 11:23:52,405 INFO L146 ILogger]: Constructing interpolant automaton starting with 2 interpolants. [2019-05-23 11:23:52,406 INFO L146 ILogger]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-05-23 11:23:52,409 INFO L146 ILogger]: Start difference. First operand 120 states. Second operand 2 states. [2019-05-23 11:23:52,436 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:23:52,436 INFO L146 ILogger]: Finished difference Result 205 states and 225 transitions. [2019-05-23 11:23:52,437 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-05-23 11:23:52,438 INFO L146 ILogger]: Start accepts. Automaton has 2 states. Word has length 71 [2019-05-23 11:23:52,439 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:23:52,450 INFO L146 ILogger]: With dead ends: 205 [2019-05-23 11:23:52,451 INFO L146 ILogger]: Without dead ends: 114 [2019-05-23 11:23:52,454 INFO L146 ILogger]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-05-23 11:23:52,472 INFO L146 ILogger]: Start minimizeSevpa. Operand 114 states. [2019-05-23 11:23:52,492 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 114 to 114. [2019-05-23 11:23:52,493 INFO L146 ILogger]: Start removeUnreachable. Operand 114 states. [2019-05-23 11:23:52,496 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 114 states to 114 states and 120 transitions. [2019-05-23 11:23:52,497 INFO L146 ILogger]: Start accepts. Automaton has 114 states and 120 transitions. Word has length 71 [2019-05-23 11:23:52,498 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:23:52,498 INFO L146 ILogger]: Abstraction has 114 states and 120 transitions. [2019-05-23 11:23:52,498 INFO L146 ILogger]: Interpolant automaton has 2 states. [2019-05-23 11:23:52,499 INFO L146 ILogger]: Start isEmpty. Operand 114 states and 120 transitions. [2019-05-23 11:23:52,501 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 72 [2019-05-23 11:23:52,502 INFO L146 ILogger]: Found error trace [2019-05-23 11:23:52,502 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] [2019-05-23 11:23:52,502 INFO L146 ILogger]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:23:52,503 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:23:52,503 INFO L146 ILogger]: Analyzing trace with hash -464879004, now seen corresponding path program 1 times [2019-05-23 11:23:52,503 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:23:52,503 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:23:52,504 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:52,505 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:23:52,505 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:52,581 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:52,721 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 11:23:52,722 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:23:52,722 INFO L146 ILogger]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-05-23 11:23:52,723 INFO L146 ILogger]: Interpolant automaton has 4 states [2019-05-23 11:23:52,724 INFO L146 ILogger]: Constructing interpolant automaton starting with 4 interpolants. [2019-05-23 11:23:52,724 INFO L146 ILogger]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-05-23 11:23:52,724 INFO L146 ILogger]: Start difference. First operand 114 states and 120 transitions. Second operand 4 states. [2019-05-23 11:23:52,948 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:23:52,948 INFO L146 ILogger]: Finished difference Result 229 states and 245 transitions. [2019-05-23 11:23:52,949 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-05-23 11:23:52,949 INFO L146 ILogger]: Start accepts. Automaton has 4 states. Word has length 71 [2019-05-23 11:23:52,949 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:23:52,952 INFO L146 ILogger]: With dead ends: 229 [2019-05-23 11:23:52,953 INFO L146 ILogger]: Without dead ends: 150 [2019-05-23 11:23:52,956 INFO L146 ILogger]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-05-23 11:23:52,957 INFO L146 ILogger]: Start minimizeSevpa. Operand 150 states. [2019-05-23 11:23:52,970 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 150 to 117. [2019-05-23 11:23:52,971 INFO L146 ILogger]: Start removeUnreachable. Operand 117 states. [2019-05-23 11:23:52,973 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 117 states to 117 states and 123 transitions. [2019-05-23 11:23:52,973 INFO L146 ILogger]: Start accepts. Automaton has 117 states and 123 transitions. Word has length 71 [2019-05-23 11:23:52,973 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:23:52,973 INFO L146 ILogger]: Abstraction has 117 states and 123 transitions. [2019-05-23 11:23:52,974 INFO L146 ILogger]: Interpolant automaton has 4 states. [2019-05-23 11:23:52,974 INFO L146 ILogger]: Start isEmpty. Operand 117 states and 123 transitions. [2019-05-23 11:23:52,977 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 105 [2019-05-23 11:23:52,978 INFO L146 ILogger]: Found error trace [2019-05-23 11:23:52,978 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:23:52,978 INFO L146 ILogger]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:23:52,978 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:23:52,979 INFO L146 ILogger]: Analyzing trace with hash 316798617, now seen corresponding path program 1 times [2019-05-23 11:23:52,979 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:23:52,979 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:23:52,980 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:52,980 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:23:52,981 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:53,029 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:53,269 INFO L146 ILogger]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-05-23 11:23:53,269 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:23:53,269 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 11:23:53,287 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:23:53,348 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:53,351 INFO L146 ILogger]: Trace formula consists of 176 conjuncts, 5 conjunts are in the unsatisfiable core [2019-05-23 11:23:53,359 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:23:53,489 INFO L146 ILogger]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-05-23 11:23:53,517 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:23:53,517 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2019-05-23 11:23:53,520 INFO L146 ILogger]: Interpolant automaton has 9 states [2019-05-23 11:23:53,521 INFO L146 ILogger]: Constructing interpolant automaton starting with 9 interpolants. [2019-05-23 11:23:53,521 INFO L146 ILogger]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:23:53,521 INFO L146 ILogger]: Start difference. First operand 117 states and 123 transitions. Second operand 9 states. [2019-05-23 11:23:54,519 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:23:54,520 INFO L146 ILogger]: Finished difference Result 270 states and 289 transitions. [2019-05-23 11:23:54,522 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-05-23 11:23:54,522 INFO L146 ILogger]: Start accepts. Automaton has 9 states. Word has length 104 [2019-05-23 11:23:54,523 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:23:54,524 INFO L146 ILogger]: With dead ends: 270 [2019-05-23 11:23:54,525 INFO L146 ILogger]: Without dead ends: 189 [2019-05-23 11:23:54,526 INFO L146 ILogger]: 0 DeclaredPredicates, 112 GetRequests, 101 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2019-05-23 11:23:54,526 INFO L146 ILogger]: Start minimizeSevpa. Operand 189 states. [2019-05-23 11:23:54,536 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 189 to 156. [2019-05-23 11:23:54,537 INFO L146 ILogger]: Start removeUnreachable. Operand 156 states. [2019-05-23 11:23:54,538 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 156 states to 156 states and 165 transitions. [2019-05-23 11:23:54,538 INFO L146 ILogger]: Start accepts. Automaton has 156 states and 165 transitions. Word has length 104 [2019-05-23 11:23:54,538 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:23:54,538 INFO L146 ILogger]: Abstraction has 156 states and 165 transitions. [2019-05-23 11:23:54,538 INFO L146 ILogger]: Interpolant automaton has 9 states. [2019-05-23 11:23:54,539 INFO L146 ILogger]: Start isEmpty. Operand 156 states and 165 transitions. [2019-05-23 11:23:54,541 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 138 [2019-05-23 11:23:54,541 INFO L146 ILogger]: Found error trace [2019-05-23 11:23:54,541 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, 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] [2019-05-23 11:23:54,542 INFO L146 ILogger]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:23:54,542 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:23:54,542 INFO L146 ILogger]: Analyzing trace with hash -2082046332, now seen corresponding path program 2 times [2019-05-23 11:23:54,542 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:23:54,542 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:23:54,543 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:54,544 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:23:54,544 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:54,575 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:54,739 INFO L146 ILogger]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2019-05-23 11:23:54,739 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:23:54,739 INFO L146 ILogger]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-05-23 11:23:54,740 INFO L146 ILogger]: Interpolant automaton has 4 states [2019-05-23 11:23:54,740 INFO L146 ILogger]: Constructing interpolant automaton starting with 4 interpolants. [2019-05-23 11:23:54,740 INFO L146 ILogger]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-05-23 11:23:54,741 INFO L146 ILogger]: Start difference. First operand 156 states and 165 transitions. Second operand 4 states. [2019-05-23 11:23:54,826 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:23:54,826 INFO L146 ILogger]: Finished difference Result 206 states and 218 transitions. [2019-05-23 11:23:54,826 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-05-23 11:23:54,826 INFO L146 ILogger]: Start accepts. Automaton has 4 states. Word has length 137 [2019-05-23 11:23:54,827 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:23:54,832 INFO L146 ILogger]: With dead ends: 206 [2019-05-23 11:23:54,832 INFO L146 ILogger]: Without dead ends: 162 [2019-05-23 11:23:54,833 INFO L146 ILogger]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-05-23 11:23:54,834 INFO L146 ILogger]: Start minimizeSevpa. Operand 162 states. [2019-05-23 11:23:54,843 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 162 to 157. [2019-05-23 11:23:54,844 INFO L146 ILogger]: Start removeUnreachable. Operand 157 states. [2019-05-23 11:23:54,845 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 157 states to 157 states and 166 transitions. [2019-05-23 11:23:54,845 INFO L146 ILogger]: Start accepts. Automaton has 157 states and 166 transitions. Word has length 137 [2019-05-23 11:23:54,845 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:23:54,845 INFO L146 ILogger]: Abstraction has 157 states and 166 transitions. [2019-05-23 11:23:54,846 INFO L146 ILogger]: Interpolant automaton has 4 states. [2019-05-23 11:23:54,846 INFO L146 ILogger]: Start isEmpty. Operand 157 states and 166 transitions. [2019-05-23 11:23:54,848 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 145 [2019-05-23 11:23:54,849 INFO L146 ILogger]: Found error trace [2019-05-23 11:23:54,849 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, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:23:54,849 INFO L146 ILogger]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:23:54,849 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:23:54,850 INFO L146 ILogger]: Analyzing trace with hash 1422947121, now seen corresponding path program 1 times [2019-05-23 11:23:54,850 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:23:54,850 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:23:54,851 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:54,851 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:23:54,851 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:54,962 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:56,420 INFO L146 ILogger]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-05-23 11:23:56,420 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:23:56,420 INFO L146 ILogger]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2019-05-23 11:23:56,421 INFO L146 ILogger]: Interpolant automaton has 17 states [2019-05-23 11:23:56,421 INFO L146 ILogger]: Constructing interpolant automaton starting with 17 interpolants. [2019-05-23 11:23:56,422 INFO L146 ILogger]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2019-05-23 11:23:56,422 INFO L146 ILogger]: Start difference. First operand 157 states and 166 transitions. Second operand 17 states. [2019-05-23 11:23:57,180 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:23:57,180 INFO L146 ILogger]: Finished difference Result 503 states and 531 transitions. [2019-05-23 11:23:57,181 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2019-05-23 11:23:57,181 INFO L146 ILogger]: Start accepts. Automaton has 17 states. Word has length 144 [2019-05-23 11:23:57,182 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:23:57,185 INFO L146 ILogger]: With dead ends: 503 [2019-05-23 11:23:57,185 INFO L146 ILogger]: Without dead ends: 495 [2019-05-23 11:23:57,186 INFO L146 ILogger]: 0 DeclaredPredicates, 39 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=188, Invalid=682, Unknown=0, NotChecked=0, Total=870 [2019-05-23 11:23:57,187 INFO L146 ILogger]: Start minimizeSevpa. Operand 495 states. [2019-05-23 11:23:57,209 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 495 to 259. [2019-05-23 11:23:57,209 INFO L146 ILogger]: Start removeUnreachable. Operand 259 states. [2019-05-23 11:23:57,211 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 259 states to 259 states and 276 transitions. [2019-05-23 11:23:57,211 INFO L146 ILogger]: Start accepts. Automaton has 259 states and 276 transitions. Word has length 144 [2019-05-23 11:23:57,212 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:23:57,212 INFO L146 ILogger]: Abstraction has 259 states and 276 transitions. [2019-05-23 11:23:57,212 INFO L146 ILogger]: Interpolant automaton has 17 states. [2019-05-23 11:23:57,212 INFO L146 ILogger]: Start isEmpty. Operand 259 states and 276 transitions. [2019-05-23 11:23:57,218 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 146 [2019-05-23 11:23:57,218 INFO L146 ILogger]: Found error trace [2019-05-23 11:23:57,218 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, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:23:57,219 INFO L146 ILogger]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:23:57,219 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:23:57,219 INFO L146 ILogger]: Analyzing trace with hash -241071271, now seen corresponding path program 1 times [2019-05-23 11:23:57,220 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:23:57,220 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:23:57,221 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:57,221 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:23:57,221 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:57,256 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:59,153 INFO L146 ILogger]: Checked inductivity of 39 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-05-23 11:23:59,153 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:23:59,153 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 11:23:59,162 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:23:59,214 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:59,216 INFO L146 ILogger]: Trace formula consists of 236 conjuncts, 37 conjunts are in the unsatisfiable core [2019-05-23 11:23:59,228 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:23:59,683 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2019-05-23 11:23:59,684 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:23:59,694 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:23:59,694 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:23:59,695 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:21, output treesize:10 [2019-05-23 11:23:59,813 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2019-05-23 11:23:59,814 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:23:59,826 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:23:59,827 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:23:59,828 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:23, output treesize:16 [2019-05-23 11:24:00,103 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:24:00,105 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 23 [2019-05-23 11:24:00,106 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:24:00,126 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:24:00,128 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:24:00,128 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:36, output treesize:29 [2019-05-23 11:24:00,221 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:24:00,247 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:24:00,443 WARN L146 ILogger]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2019-05-23 11:24:00,444 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:24:00,444 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 39 treesize of output 67 [2019-05-23 11:24:00,451 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:24:00,517 INFO L146 ILogger]: treesize reduction 21, result has 74.4 percent of original size [2019-05-23 11:24:00,520 INFO L146 ILogger]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:24:00,520 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 3 variables, input treesize:45, output treesize:35 [2019-05-23 11:24:00,887 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2019-05-23 11:24:00,887 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:24:00,890 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:24:00,890 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:24:00,891 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:18, output treesize:7 [2019-05-23 11:24:00,982 INFO L146 ILogger]: Checked inductivity of 39 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-05-23 11:24:01,002 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:24:01,002 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 22] total 47 [2019-05-23 11:24:01,003 INFO L146 ILogger]: Interpolant automaton has 47 states [2019-05-23 11:24:01,003 INFO L146 ILogger]: Constructing interpolant automaton starting with 47 interpolants. [2019-05-23 11:24:01,004 INFO L146 ILogger]: CoverageRelationStatistics Valid=197, Invalid=1965, Unknown=0, NotChecked=0, Total=2162 [2019-05-23 11:24:01,004 INFO L146 ILogger]: Start difference. First operand 259 states and 276 transitions. Second operand 47 states. [2019-05-23 11:24:04,389 WARN L146 ILogger]: Spent 100.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 35 [2019-05-23 11:24:05,430 WARN L146 ILogger]: Spent 100.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 36 [2019-05-23 11:24:05,797 WARN L146 ILogger]: Spent 169.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 36 [2019-05-23 11:24:08,788 WARN L146 ILogger]: Spent 148.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 26 [2019-05-23 11:24:09,437 WARN L146 ILogger]: Spent 115.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 28 [2019-05-23 11:24:13,385 WARN L146 ILogger]: Spent 379.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 22 [2019-05-23 11:24:14,354 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:24:14,354 INFO L146 ILogger]: Finished difference Result 884 states and 948 transitions. [2019-05-23 11:24:14,355 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2019-05-23 11:24:14,355 INFO L146 ILogger]: Start accepts. Automaton has 47 states. Word has length 145 [2019-05-23 11:24:14,356 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:24:14,362 INFO L146 ILogger]: With dead ends: 884 [2019-05-23 11:24:14,362 INFO L146 ILogger]: Without dead ends: 810 [2019-05-23 11:24:14,372 INFO L146 ILogger]: 0 DeclaredPredicates, 277 GetRequests, 127 SyntacticMatches, 2 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6796 ImplicationChecksByTransitivity, 12.1s TimeCoverageRelationStatistics Valid=3333, Invalid=19017, Unknown=0, NotChecked=0, Total=22350 [2019-05-23 11:24:14,373 INFO L146 ILogger]: Start minimizeSevpa. Operand 810 states. [2019-05-23 11:24:14,395 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 810 to 395. [2019-05-23 11:24:14,396 INFO L146 ILogger]: Start removeUnreachable. Operand 395 states. [2019-05-23 11:24:14,397 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 395 states to 395 states and 421 transitions. [2019-05-23 11:24:14,397 INFO L146 ILogger]: Start accepts. Automaton has 395 states and 421 transitions. Word has length 145 [2019-05-23 11:24:14,398 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:24:14,398 INFO L146 ILogger]: Abstraction has 395 states and 421 transitions. [2019-05-23 11:24:14,398 INFO L146 ILogger]: Interpolant automaton has 47 states. [2019-05-23 11:24:14,398 INFO L146 ILogger]: Start isEmpty. Operand 395 states and 421 transitions. [2019-05-23 11:24:14,400 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 146 [2019-05-23 11:24:14,400 INFO L146 ILogger]: Found error trace [2019-05-23 11:24:14,401 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, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:24:14,401 INFO L146 ILogger]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:24:14,401 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:24:14,401 INFO L146 ILogger]: Analyzing trace with hash 2033853711, now seen corresponding path program 2 times [2019-05-23 11:24:14,402 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:24:14,402 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:24:14,403 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:14,403 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:24:14,403 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:14,427 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:14,901 WARN L146 ILogger]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2019-05-23 11:24:15,598 INFO L146 ILogger]: Checked inductivity of 39 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2019-05-23 11:24:15,599 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:24:15,599 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 11:24:15,608 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:24:15,672 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:24:15,672 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:15,675 INFO L146 ILogger]: Trace formula consists of 236 conjuncts, 37 conjunts are in the unsatisfiable core [2019-05-23 11:24:15,684 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:24:16,737 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:24:16,738 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 23 [2019-05-23 11:24:16,739 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:24:16,752 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:24:16,753 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:24:16,753 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:33, output treesize:26 [2019-05-23 11:24:16,823 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:24:16,827 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:24:16,827 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 23 [2019-05-23 11:24:16,828 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:24:16,835 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:24:16,835 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:24:16,836 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:39, output treesize:11 [2019-05-23 11:24:17,017 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2019-05-23 11:24:17,024 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2019-05-23 11:24:17,024 INFO L146 ILogger]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-05-23 11:24:17,026 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:24:17,026 INFO L146 ILogger]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:24:17,029 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:24:17,029 INFO L146 ILogger]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:24:17,030 INFO L146 ILogger]: Needed 3 recursive calls to eliminate 3 variables, input treesize:21, output treesize:7 [2019-05-23 11:24:17,079 INFO L146 ILogger]: Checked inductivity of 39 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2019-05-23 11:24:17,098 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:24:17,099 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 33 [2019-05-23 11:24:17,099 INFO L146 ILogger]: Interpolant automaton has 33 states [2019-05-23 11:24:17,100 INFO L146 ILogger]: Constructing interpolant automaton starting with 33 interpolants. [2019-05-23 11:24:17,100 INFO L146 ILogger]: CoverageRelationStatistics Valid=142, Invalid=914, Unknown=0, NotChecked=0, Total=1056 [2019-05-23 11:24:17,100 INFO L146 ILogger]: Start difference. First operand 395 states and 421 transitions. Second operand 33 states. [2019-05-23 11:24:17,595 WARN L146 ILogger]: Spent 162.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 23 [2019-05-23 11:24:17,794 WARN L146 ILogger]: Spent 121.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 26 [2019-05-23 11:24:19,349 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:24:19,349 INFO L146 ILogger]: Finished difference Result 709 states and 756 transitions. [2019-05-23 11:24:19,350 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-05-23 11:24:19,350 INFO L146 ILogger]: Start accepts. Automaton has 33 states. Word has length 145 [2019-05-23 11:24:19,350 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:24:19,354 INFO L146 ILogger]: With dead ends: 709 [2019-05-23 11:24:19,354 INFO L146 ILogger]: Without dead ends: 626 [2019-05-23 11:24:19,362 INFO L146 ILogger]: 0 DeclaredPredicates, 190 GetRequests, 130 SyntacticMatches, 10 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 694 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=405, Invalid=2247, Unknown=0, NotChecked=0, Total=2652 [2019-05-23 11:24:19,364 INFO L146 ILogger]: Start minimizeSevpa. Operand 626 states. [2019-05-23 11:24:19,387 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 626 to 433. [2019-05-23 11:24:19,388 INFO L146 ILogger]: Start removeUnreachable. Operand 433 states. [2019-05-23 11:24:19,389 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 433 states to 433 states and 462 transitions. [2019-05-23 11:24:19,390 INFO L146 ILogger]: Start accepts. Automaton has 433 states and 462 transitions. Word has length 145 [2019-05-23 11:24:19,390 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:24:19,390 INFO L146 ILogger]: Abstraction has 433 states and 462 transitions. [2019-05-23 11:24:19,390 INFO L146 ILogger]: Interpolant automaton has 33 states. [2019-05-23 11:24:19,390 INFO L146 ILogger]: Start isEmpty. Operand 433 states and 462 transitions. [2019-05-23 11:24:19,395 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 146 [2019-05-23 11:24:19,395 INFO L146 ILogger]: Found error trace [2019-05-23 11:24:19,396 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, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:24:19,396 INFO L146 ILogger]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:24:19,396 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:24:19,397 INFO L146 ILogger]: Analyzing trace with hash 1616453333, now seen corresponding path program 1 times [2019-05-23 11:24:19,397 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:24:19,397 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:24:19,398 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:19,398 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:24:19,399 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:19,427 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:19,878 WARN L146 ILogger]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2019-05-23 11:24:20,096 WARN L146 ILogger]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2019-05-23 11:24:20,736 INFO L146 ILogger]: Checked inductivity of 39 backedges. 4 proven. 13 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-05-23 11:24:20,736 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:24:20,736 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 11:24:20,756 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:24:20,801 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:20,803 INFO L146 ILogger]: Trace formula consists of 236 conjuncts, 45 conjunts are in the unsatisfiable core [2019-05-23 11:24:20,808 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:24:21,400 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2019-05-23 11:24:21,400 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:24:21,407 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:24:21,408 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:24:21,408 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:23, output treesize:10 [2019-05-23 11:24:22,095 WARN L146 ILogger]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2019-05-23 11:24:22,255 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2019-05-23 11:24:22,256 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:24:22,264 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:24:22,265 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:24:22,266 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:24, output treesize:13 [2019-05-23 11:24:22,348 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2019-05-23 11:24:22,349 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:24:22,357 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:24:22,358 INFO L146 ILogger]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-05-23 11:24:22,359 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 3 variables, input treesize:29, output treesize:22 [2019-05-23 11:24:22,723 INFO L146 ILogger]: detected equality via solver [2019-05-23 11:24:22,725 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:24:22,725 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 10 [2019-05-23 11:24:22,726 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:24:22,731 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:24:22,732 INFO L146 ILogger]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:24:22,732 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 3 variables, input treesize:28, output treesize:7 [2019-05-23 11:24:22,816 INFO L146 ILogger]: Checked inductivity of 39 backedges. 10 proven. 20 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-05-23 11:24:22,835 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:24:22,836 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 27] total 45 [2019-05-23 11:24:22,836 INFO L146 ILogger]: Interpolant automaton has 45 states [2019-05-23 11:24:22,837 INFO L146 ILogger]: Constructing interpolant automaton starting with 45 interpolants. [2019-05-23 11:24:22,837 INFO L146 ILogger]: CoverageRelationStatistics Valid=199, Invalid=1781, Unknown=0, NotChecked=0, Total=1980 [2019-05-23 11:24:22,837 INFO L146 ILogger]: Start difference. First operand 433 states and 462 transitions. Second operand 45 states. [2019-05-23 11:24:36,250 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:24:36,250 INFO L146 ILogger]: Finished difference Result 1538 states and 1646 transitions. [2019-05-23 11:24:36,250 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 143 states. [2019-05-23 11:24:36,250 INFO L146 ILogger]: Start accepts. Automaton has 45 states. Word has length 145 [2019-05-23 11:24:36,251 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:24:36,257 INFO L146 ILogger]: With dead ends: 1538 [2019-05-23 11:24:36,257 INFO L146 ILogger]: Without dead ends: 1454 [2019-05-23 11:24:36,270 INFO L146 ILogger]: 0 DeclaredPredicates, 308 GetRequests, 121 SyntacticMatches, 6 SemanticMatches, 181 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10881 ImplicationChecksByTransitivity, 12.2s TimeCoverageRelationStatistics Valid=4176, Invalid=29130, Unknown=0, NotChecked=0, Total=33306 [2019-05-23 11:24:36,271 INFO L146 ILogger]: Start minimizeSevpa. Operand 1454 states. [2019-05-23 11:24:36,301 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 1454 to 569. [2019-05-23 11:24:36,302 INFO L146 ILogger]: Start removeUnreachable. Operand 569 states. [2019-05-23 11:24:36,303 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 569 states to 569 states and 604 transitions. [2019-05-23 11:24:36,303 INFO L146 ILogger]: Start accepts. Automaton has 569 states and 604 transitions. Word has length 145 [2019-05-23 11:24:36,304 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:24:36,304 INFO L146 ILogger]: Abstraction has 569 states and 604 transitions. [2019-05-23 11:24:36,304 INFO L146 ILogger]: Interpolant automaton has 45 states. [2019-05-23 11:24:36,304 INFO L146 ILogger]: Start isEmpty. Operand 569 states and 604 transitions. [2019-05-23 11:24:36,307 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 146 [2019-05-23 11:24:36,307 INFO L146 ILogger]: Found error trace [2019-05-23 11:24:36,307 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, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:24:36,307 INFO L146 ILogger]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:24:36,308 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:24:36,308 INFO L146 ILogger]: Analyzing trace with hash 1476535007, now seen corresponding path program 2 times [2019-05-23 11:24:36,308 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:24:36,309 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:24:36,309 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:36,309 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:24:36,310 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:36,330 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:37,026 WARN L146 ILogger]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2019-05-23 11:24:38,178 INFO L146 ILogger]: Checked inductivity of 39 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-05-23 11:24:38,179 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:24:38,179 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 11:24:38,187 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:24:38,220 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:24:38,221 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:38,223 INFO L146 ILogger]: Trace formula consists of 236 conjuncts, 37 conjunts are in the unsatisfiable core [2019-05-23 11:24:38,226 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:24:38,423 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:24:38,424 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 10 [2019-05-23 11:24:38,424 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:24:38,428 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:24:38,428 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:24:38,429 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:18, output treesize:7 [2019-05-23 11:24:38,481 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2019-05-23 11:24:38,481 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:24:38,487 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:24:38,488 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:24:38,488 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:20, output treesize:13 [2019-05-23 11:24:38,736 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2019-05-23 11:24:38,736 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:24:38,740 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:24:38,741 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:24:38,741 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:18, output treesize:7 [2019-05-23 11:24:38,791 INFO L146 ILogger]: Checked inductivity of 39 backedges. 9 proven. 7 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2019-05-23 11:24:38,810 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:24:38,810 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 20] total 43 [2019-05-23 11:24:38,811 INFO L146 ILogger]: Interpolant automaton has 43 states [2019-05-23 11:24:38,811 INFO L146 ILogger]: Constructing interpolant automaton starting with 43 interpolants. [2019-05-23 11:24:38,811 INFO L146 ILogger]: CoverageRelationStatistics Valid=164, Invalid=1642, Unknown=0, NotChecked=0, Total=1806 [2019-05-23 11:24:38,811 INFO L146 ILogger]: Start difference. First operand 569 states and 604 transitions. Second operand 43 states. [2019-05-23 11:24:42,276 WARN L146 ILogger]: Spent 109.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 43 [2019-05-23 11:24:42,600 WARN L146 ILogger]: Spent 104.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 41 [2019-05-23 11:24:45,349 WARN L146 ILogger]: Spent 194.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 31 [2019-05-23 11:24:47,950 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:24:47,951 INFO L146 ILogger]: Finished difference Result 1053 states and 1123 transitions. [2019-05-23 11:24:47,951 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2019-05-23 11:24:47,951 INFO L146 ILogger]: Start accepts. Automaton has 43 states. Word has length 145 [2019-05-23 11:24:47,952 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:24:47,956 INFO L146 ILogger]: With dead ends: 1053 [2019-05-23 11:24:47,956 INFO L146 ILogger]: Without dead ends: 979 [2019-05-23 11:24:47,958 INFO L146 ILogger]: 0 DeclaredPredicates, 259 GetRequests, 131 SyntacticMatches, 3 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4810 ImplicationChecksByTransitivity, 8.9s TimeCoverageRelationStatistics Valid=2380, Invalid=13622, Unknown=0, NotChecked=0, Total=16002 [2019-05-23 11:24:47,959 INFO L146 ILogger]: Start minimizeSevpa. Operand 979 states. [2019-05-23 11:24:47,980 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 979 to 581. [2019-05-23 11:24:47,980 INFO L146 ILogger]: Start removeUnreachable. Operand 581 states. [2019-05-23 11:24:47,981 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 581 states to 581 states and 616 transitions. [2019-05-23 11:24:47,981 INFO L146 ILogger]: Start accepts. Automaton has 581 states and 616 transitions. Word has length 145 [2019-05-23 11:24:47,982 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:24:47,982 INFO L146 ILogger]: Abstraction has 581 states and 616 transitions. [2019-05-23 11:24:47,982 INFO L146 ILogger]: Interpolant automaton has 43 states. [2019-05-23 11:24:47,982 INFO L146 ILogger]: Start isEmpty. Operand 581 states and 616 transitions. [2019-05-23 11:24:47,984 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 146 [2019-05-23 11:24:47,984 INFO L146 ILogger]: Found error trace [2019-05-23 11:24:47,984 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, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:24:47,985 INFO L146 ILogger]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:24:47,985 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:24:47,985 INFO L146 ILogger]: Analyzing trace with hash -966611237, now seen corresponding path program 1 times [2019-05-23 11:24:47,985 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:24:47,985 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:24:47,986 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:47,986 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:24:47,986 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:48,010 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:48,693 WARN L146 ILogger]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2019-05-23 11:24:49,496 INFO L146 ILogger]: Checked inductivity of 39 backedges. 4 proven. 14 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-05-23 11:24:49,496 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:24:49,497 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 11:24:49,506 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:24:49,541 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:49,542 INFO L146 ILogger]: Trace formula consists of 236 conjuncts, 37 conjunts are in the unsatisfiable core [2019-05-23 11:24:49,544 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:24:49,830 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2019-05-23 11:24:49,831 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:24:49,926 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:24:49,927 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:24:49,927 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:21, output treesize:10 [2019-05-23 11:24:50,137 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2019-05-23 11:24:50,138 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:24:50,144 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:24:50,145 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:24:50,145 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:23, output treesize:16 [2019-05-23 11:24:50,243 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:24:50,244 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 23 [2019-05-23 11:24:50,245 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:24:50,254 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:24:50,255 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:24:50,255 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:36, output treesize:29 [2019-05-23 11:24:50,297 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:24:50,299 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:24:50,310 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:24:50,310 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 39 treesize of output 67 [2019-05-23 11:24:50,312 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:24:50,347 INFO L146 ILogger]: treesize reduction 21, result has 74.4 percent of original size [2019-05-23 11:24:50,349 INFO L146 ILogger]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:24:50,349 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 3 variables, input treesize:45, output treesize:35 [2019-05-23 11:24:50,433 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2019-05-23 11:24:50,434 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:24:50,437 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:24:50,437 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:24:50,438 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:18, output treesize:7 [2019-05-23 11:24:50,502 INFO L146 ILogger]: Checked inductivity of 39 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-05-23 11:24:50,520 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:24:50,521 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 22] total 43 [2019-05-23 11:24:50,521 INFO L146 ILogger]: Interpolant automaton has 43 states [2019-05-23 11:24:50,521 INFO L146 ILogger]: Constructing interpolant automaton starting with 43 interpolants. [2019-05-23 11:24:50,522 INFO L146 ILogger]: CoverageRelationStatistics Valid=206, Invalid=1600, Unknown=0, NotChecked=0, Total=1806 [2019-05-23 11:24:50,522 INFO L146 ILogger]: Start difference. First operand 581 states and 616 transitions. Second operand 43 states. [2019-05-23 11:24:53,660 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:24:53,660 INFO L146 ILogger]: Finished difference Result 823 states and 873 transitions. [2019-05-23 11:24:53,666 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2019-05-23 11:24:53,666 INFO L146 ILogger]: Start accepts. Automaton has 43 states. Word has length 145 [2019-05-23 11:24:53,666 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:24:53,669 INFO L146 ILogger]: With dead ends: 823 [2019-05-23 11:24:53,669 INFO L146 ILogger]: Without dead ends: 792 [2019-05-23 11:24:53,670 INFO L146 ILogger]: 0 DeclaredPredicates, 212 GetRequests, 128 SyntacticMatches, 5 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1765 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=1067, Invalid=5413, Unknown=0, NotChecked=0, Total=6480 [2019-05-23 11:24:53,671 INFO L146 ILogger]: Start minimizeSevpa. Operand 792 states. [2019-05-23 11:24:53,690 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 792 to 638. [2019-05-23 11:24:53,691 INFO L146 ILogger]: Start removeUnreachable. Operand 638 states. [2019-05-23 11:24:53,692 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 638 states to 638 states and 676 transitions. [2019-05-23 11:24:53,692 INFO L146 ILogger]: Start accepts. Automaton has 638 states and 676 transitions. Word has length 145 [2019-05-23 11:24:53,692 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:24:53,692 INFO L146 ILogger]: Abstraction has 638 states and 676 transitions. [2019-05-23 11:24:53,693 INFO L146 ILogger]: Interpolant automaton has 43 states. [2019-05-23 11:24:53,693 INFO L146 ILogger]: Start isEmpty. Operand 638 states and 676 transitions. [2019-05-23 11:24:53,695 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 146 [2019-05-23 11:24:53,695 INFO L146 ILogger]: Found error trace [2019-05-23 11:24:53,695 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, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:24:53,695 INFO L146 ILogger]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:24:53,696 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:24:53,696 INFO L146 ILogger]: Analyzing trace with hash 844400017, now seen corresponding path program 2 times [2019-05-23 11:24:53,696 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:24:53,696 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:24:53,698 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:53,698 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:24:53,698 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:53,737 INFO L146 ILogger]: Conjunction of SSA is unsat