java -Xmx6000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data ./data --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/ai/eq-bench/svcomp-Reach-32bit-Automizer_Camel+AI_EQ_SS.epf -i ../../../trunk/examples/svcomp/reducercommutativity/rangesum20_false-unreach-call.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1cceb4a-m [2018-01-30 00:32:51,566 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-30 00:32:51,567 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-30 00:32:51,576 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-30 00:32:51,576 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-30 00:32:51,577 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-30 00:32:51,577 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-30 00:32:51,578 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-30 00:32:51,579 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-30 00:32:51,580 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-30 00:32:51,580 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-30 00:32:51,581 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-30 00:32:51,581 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-30 00:32:51,582 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-30 00:32:51,582 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-30 00:32:51,583 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-30 00:32:51,584 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-30 00:32:51,585 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-30 00:32:51,586 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-30 00:32:51,587 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-30 00:32:51,588 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-30 00:32:51,588 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-30 00:32:51,588 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-30 00:32:51,589 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-30 00:32:51,589 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-30 00:32:51,590 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-30 00:32:51,590 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-30 00:32:51,590 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-30 00:32:51,590 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-01-30 00:32:51,591 INFO L98 SettingsManager]: Beginning loading settings from /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/eq-bench/svcomp-Reach-32bit-Automizer_Camel+AI_EQ_SS.epf [2018-01-30 00:32:51,597 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-30 00:32:51,597 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-30 00:32:51,598 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-30 00:32:51,598 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-30 00:32:51,598 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-30 00:32:51,598 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-30 00:32:51,598 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-30 00:32:51,598 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-30 00:32:51,598 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-30 00:32:51,598 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-30 00:32:51,599 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-30 00:32:51,599 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-30 00:32:51,599 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-30 00:32:51,599 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-30 00:32:51,599 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-30 00:32:51,599 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-30 00:32:51,599 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-30 00:32:51,599 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-30 00:32:51,599 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-30 00:32:51,599 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-01-30 00:32:51,599 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-30 00:32:51,600 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-30 00:32:51,600 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-30 00:32:51,600 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-30 00:32:51,600 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-30 00:32:51,600 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-30 00:32:51,600 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-30 00:32:51,600 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-30 00:32:51,600 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-01-30 00:32:51,600 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-30 00:32:51,600 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-30 00:32:51,600 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-30 00:32:51,601 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-30 00:32:51,601 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-30 00:32:51,625 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-30 00:32:51,632 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-30 00:32:51,634 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-30 00:32:51,635 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-30 00:32:51,635 INFO L276 PluginConnector]: CDTParser initialized [2018-01-30 00:32:51,636 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/reducercommutativity/rangesum20_false-unreach-call.i [2018-01-30 00:32:51,704 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-30 00:32:51,705 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-30 00:32:51,705 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-30 00:32:51,706 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-30 00:32:51,709 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-30 00:32:51,710 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.01 12:32:51" (1/1) ... [2018-01-30 00:32:51,711 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5587a0d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 12:32:51, skipping insertion in model container [2018-01-30 00:32:51,711 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.01 12:32:51" (1/1) ... [2018-01-30 00:32:51,720 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-30 00:32:51,730 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-30 00:32:51,809 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-30 00:32:51,827 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-30 00:32:51,833 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 12:32:51 WrapperNode [2018-01-30 00:32:51,834 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-30 00:32:51,834 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-30 00:32:51,834 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-30 00:32:51,834 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-30 00:32:51,843 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 12:32:51" (1/1) ... [2018-01-30 00:32:51,843 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 12:32:51" (1/1) ... [2018-01-30 00:32:51,849 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 12:32:51" (1/1) ... [2018-01-30 00:32:51,849 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 12:32:51" (1/1) ... [2018-01-30 00:32:51,851 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 12:32:51" (1/1) ... [2018-01-30 00:32:51,855 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 12:32:51" (1/1) ... [2018-01-30 00:32:51,856 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 12:32:51" (1/1) ... [2018-01-30 00:32:51,857 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-30 00:32:51,857 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-30 00:32:51,857 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-30 00:32:51,857 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-30 00:32:51,858 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 12:32:51" (1/1) ... No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-30 00:32:51,907 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-30 00:32:51,907 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-30 00:32:51,907 INFO L136 BoogieDeclarations]: Found implementation of procedure init_nondet [2018-01-30 00:32:51,907 INFO L136 BoogieDeclarations]: Found implementation of procedure rangesum [2018-01-30 00:32:51,908 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-30 00:32:51,908 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-30 00:32:51,908 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-30 00:32:51,908 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-30 00:32:51,908 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-30 00:32:51,908 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-30 00:32:51,908 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-01-30 00:32:51,908 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-30 00:32:51,908 INFO L128 BoogieDeclarations]: Found specification of procedure init_nondet [2018-01-30 00:32:51,908 INFO L128 BoogieDeclarations]: Found specification of procedure rangesum [2018-01-30 00:32:51,908 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-30 00:32:51,908 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-30 00:32:51,908 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-30 00:32:52,314 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-30 00:32:52,314 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.01 12:32:52 BoogieIcfgContainer [2018-01-30 00:32:52,315 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-30 00:32:52,315 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-30 00:32:52,315 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-30 00:32:52,317 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-30 00:32:52,317 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.01 12:32:51" (1/3) ... [2018-01-30 00:32:52,318 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fd40283 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.01 12:32:52, skipping insertion in model container [2018-01-30 00:32:52,318 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 12:32:51" (2/3) ... [2018-01-30 00:32:52,318 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fd40283 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.01 12:32:52, skipping insertion in model container [2018-01-30 00:32:52,318 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.01 12:32:52" (3/3) ... [2018-01-30 00:32:52,323 INFO L107 eAbstractionObserver]: Analyzing ICFG rangesum20_false-unreach-call.i [2018-01-30 00:32:52,329 INFO L128 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-30 00:32:52,333 INFO L140 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-01-30 00:32:52,359 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-30 00:32:52,359 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-30 00:32:52,359 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-30 00:32:52,359 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-30 00:32:52,359 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-30 00:32:52,359 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-30 00:32:52,359 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-30 00:32:52,359 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-30 00:32:52,360 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-30 00:32:52,370 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states. [2018-01-30 00:32:52,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2018-01-30 00:32:52,375 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 00:32:52,375 INFO L350 BasicCegarLoop]: trace histogram [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] [2018-01-30 00:32:52,375 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr0AssertViolation]=== [2018-01-30 00:32:52,378 INFO L82 PathProgramCache]: Analyzing trace with hash 540696337, now seen corresponding path program 1 times [2018-01-30 00:32:52,379 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 00:32:52,380 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 00:32:52,408 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:32:52,409 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 00:32:52,409 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:32:52,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 00:32:52,440 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 00:32:52,458 INFO L434 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2018-01-30 00:32:52,458 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 00:32:52,458 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/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) [2018-01-30 00:32:52,480 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 00:32:52,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 00:32:52,529 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 00:32:52,557 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2018-01-30 00:32:52,577 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-30 00:32:52,578 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-30 00:32:52,579 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-30 00:32:52,587 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-30 00:32:52,587 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-30 00:32:52,589 INFO L87 Difference]: Start difference. First operand 88 states. Second operand 2 states. [2018-01-30 00:32:52,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 00:32:52,609 INFO L93 Difference]: Finished difference Result 157 states and 178 transitions. [2018-01-30 00:32:52,609 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-30 00:32:52,610 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 78 [2018-01-30 00:32:52,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 00:32:52,617 INFO L225 Difference]: With dead ends: 157 [2018-01-30 00:32:52,617 INFO L226 Difference]: Without dead ends: 81 [2018-01-30 00:32:52,619 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-30 00:32:52,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2018-01-30 00:32:52,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2018-01-30 00:32:52,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2018-01-30 00:32:52,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 87 transitions. [2018-01-30 00:32:52,714 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 87 transitions. Word has length 78 [2018-01-30 00:32:52,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 00:32:52,714 INFO L432 AbstractCegarLoop]: Abstraction has 81 states and 87 transitions. [2018-01-30 00:32:52,715 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-30 00:32:52,715 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 87 transitions. [2018-01-30 00:32:52,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2018-01-30 00:32:52,717 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 00:32:52,717 INFO L350 BasicCegarLoop]: trace histogram [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] [2018-01-30 00:32:52,717 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr0AssertViolation]=== [2018-01-30 00:32:52,717 INFO L82 PathProgramCache]: Analyzing trace with hash -199678615, now seen corresponding path program 1 times [2018-01-30 00:32:52,717 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 00:32:52,718 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 00:32:52,718 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:32:52,718 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 00:32:52,719 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:32:52,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 00:32:52,733 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 00:32:52,774 INFO L434 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2018-01-30 00:32:52,774 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 00:32:52,775 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/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) [2018-01-30 00:32:52,787 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 00:32:52,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 00:32:52,825 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 00:32:52,878 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2018-01-30 00:32:52,896 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-30 00:32:52,897 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-30 00:32:52,897 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-30 00:32:52,897 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-30 00:32:52,898 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-30 00:32:52,898 INFO L87 Difference]: Start difference. First operand 81 states and 87 transitions. Second operand 3 states. [2018-01-30 00:32:52,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 00:32:52,958 INFO L93 Difference]: Finished difference Result 150 states and 162 transitions. [2018-01-30 00:32:52,960 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-30 00:32:52,960 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 83 [2018-01-30 00:32:52,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 00:32:52,962 INFO L225 Difference]: With dead ends: 150 [2018-01-30 00:32:52,962 INFO L226 Difference]: Without dead ends: 88 [2018-01-30 00:32:52,963 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-30 00:32:52,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2018-01-30 00:32:52,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 83. [2018-01-30 00:32:52,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2018-01-30 00:32:52,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 89 transitions. [2018-01-30 00:32:52,968 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 89 transitions. Word has length 83 [2018-01-30 00:32:52,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 00:32:52,969 INFO L432 AbstractCegarLoop]: Abstraction has 83 states and 89 transitions. [2018-01-30 00:32:52,969 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-30 00:32:52,969 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 89 transitions. [2018-01-30 00:32:52,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2018-01-30 00:32:52,970 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 00:32:52,970 INFO L350 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-01-30 00:32:52,970 INFO L371 AbstractCegarLoop]: === Iteration 3 === [mainErr0AssertViolation]=== [2018-01-30 00:32:52,970 INFO L82 PathProgramCache]: Analyzing trace with hash 1465441618, now seen corresponding path program 1 times [2018-01-30 00:32:52,971 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 00:32:52,971 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 00:32:52,971 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:32:52,971 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 00:32:52,971 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:32:52,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 00:32:52,982 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 00:32:53,017 INFO L434 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2018-01-30 00:32:53,017 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 00:32:53,017 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/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 [2018-01-30 00:32:53,027 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 00:32:53,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 00:32:53,066 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 00:32:53,118 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-01-30 00:32:53,134 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-30 00:32:53,135 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-30 00:32:53,135 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-30 00:32:53,135 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-30 00:32:53,135 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-30 00:32:53,135 INFO L87 Difference]: Start difference. First operand 83 states and 89 transitions. Second operand 3 states. [2018-01-30 00:32:53,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 00:32:53,194 INFO L93 Difference]: Finished difference Result 151 states and 169 transitions. [2018-01-30 00:32:53,195 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-30 00:32:53,195 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 91 [2018-01-30 00:32:53,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 00:32:53,197 INFO L225 Difference]: With dead ends: 151 [2018-01-30 00:32:53,197 INFO L226 Difference]: Without dead ends: 96 [2018-01-30 00:32:53,197 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-30 00:32:53,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2018-01-30 00:32:53,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 90. [2018-01-30 00:32:53,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2018-01-30 00:32:53,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 98 transitions. [2018-01-30 00:32:53,203 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 98 transitions. Word has length 91 [2018-01-30 00:32:53,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 00:32:53,203 INFO L432 AbstractCegarLoop]: Abstraction has 90 states and 98 transitions. [2018-01-30 00:32:53,203 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-30 00:32:53,203 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 98 transitions. [2018-01-30 00:32:53,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2018-01-30 00:32:53,205 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 00:32:53,205 INFO L350 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-01-30 00:32:53,205 INFO L371 AbstractCegarLoop]: === Iteration 4 === [mainErr0AssertViolation]=== [2018-01-30 00:32:53,205 INFO L82 PathProgramCache]: Analyzing trace with hash 280349970, now seen corresponding path program 1 times [2018-01-30 00:32:53,205 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 00:32:53,205 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 00:32:53,206 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:32:53,206 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 00:32:53,206 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:32:53,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 00:32:53,213 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 00:32:53,292 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2018-01-30 00:32:53,292 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 00:32:53,292 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/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) [2018-01-30 00:32:53,306 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 00:32:53,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 00:32:53,336 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 00:32:53,421 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2018-01-30 00:32:53,442 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-01-30 00:32:53,443 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2018-01-30 00:32:53,443 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-30 00:32:53,443 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-30 00:32:53,443 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-01-30 00:32:53,443 INFO L87 Difference]: Start difference. First operand 90 states and 98 transitions. Second operand 6 states. [2018-01-30 00:32:53,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 00:32:53,610 INFO L93 Difference]: Finished difference Result 177 states and 198 transitions. [2018-01-30 00:32:53,614 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-30 00:32:53,614 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 91 [2018-01-30 00:32:53,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 00:32:53,615 INFO L225 Difference]: With dead ends: 177 [2018-01-30 00:32:53,615 INFO L226 Difference]: Without dead ends: 108 [2018-01-30 00:32:53,615 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-01-30 00:32:53,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2018-01-30 00:32:53,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 101. [2018-01-30 00:32:53,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2018-01-30 00:32:53,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 109 transitions. [2018-01-30 00:32:53,622 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 109 transitions. Word has length 91 [2018-01-30 00:32:53,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 00:32:53,622 INFO L432 AbstractCegarLoop]: Abstraction has 101 states and 109 transitions. [2018-01-30 00:32:53,622 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-30 00:32:53,622 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 109 transitions. [2018-01-30 00:32:53,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2018-01-30 00:32:53,623 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 00:32:53,623 INFO L350 BasicCegarLoop]: trace histogram [6, 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] [2018-01-30 00:32:53,623 INFO L371 AbstractCegarLoop]: === Iteration 5 === [mainErr0AssertViolation]=== [2018-01-30 00:32:53,624 INFO L82 PathProgramCache]: Analyzing trace with hash -253115437, now seen corresponding path program 1 times [2018-01-30 00:32:53,624 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 00:32:53,624 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 00:32:53,624 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:32:53,624 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 00:32:53,624 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:32:53,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 00:32:53,633 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 00:32:53,734 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2018-01-30 00:32:53,734 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 00:32:53,735 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/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 [2018-01-30 00:32:53,749 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 00:32:53,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 00:32:53,778 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 00:32:53,827 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2018-01-30 00:32:53,844 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-01-30 00:32:53,844 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2018-01-30 00:32:53,844 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-30 00:32:53,845 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-30 00:32:53,845 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-01-30 00:32:53,845 INFO L87 Difference]: Start difference. First operand 101 states and 109 transitions. Second operand 6 states. [2018-01-30 00:32:54,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 00:32:54,149 INFO L93 Difference]: Finished difference Result 181 states and 201 transitions. [2018-01-30 00:32:54,149 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-30 00:32:54,149 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 117 [2018-01-30 00:32:54,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 00:32:54,150 INFO L225 Difference]: With dead ends: 181 [2018-01-30 00:32:54,150 INFO L226 Difference]: Without dead ends: 116 [2018-01-30 00:32:54,152 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-01-30 00:32:54,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2018-01-30 00:32:54,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 109. [2018-01-30 00:32:54,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2018-01-30 00:32:54,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 117 transitions. [2018-01-30 00:32:54,157 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 117 transitions. Word has length 117 [2018-01-30 00:32:54,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 00:32:54,157 INFO L432 AbstractCegarLoop]: Abstraction has 109 states and 117 transitions. [2018-01-30 00:32:54,157 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-30 00:32:54,157 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 117 transitions. [2018-01-30 00:32:54,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2018-01-30 00:32:54,158 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 00:32:54,158 INFO L350 BasicCegarLoop]: trace histogram [9, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-01-30 00:32:54,158 INFO L371 AbstractCegarLoop]: === Iteration 6 === [mainErr0AssertViolation]=== [2018-01-30 00:32:54,158 INFO L82 PathProgramCache]: Analyzing trace with hash -1180114590, now seen corresponding path program 1 times [2018-01-30 00:32:54,158 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 00:32:54,158 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 00:32:54,159 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:32:54,159 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 00:32:54,159 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:32:54,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 00:32:54,177 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 00:32:54,244 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2018-01-30 00:32:54,244 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 00:32:54,245 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/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) [2018-01-30 00:32:54,252 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 00:32:54,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 00:32:54,292 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 00:32:54,342 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2018-01-30 00:32:54,359 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 00:32:54,359 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7] total 10 [2018-01-30 00:32:54,359 INFO L409 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-01-30 00:32:54,360 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-01-30 00:32:54,360 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2018-01-30 00:32:54,360 INFO L87 Difference]: Start difference. First operand 109 states and 117 transitions. Second operand 10 states. [2018-01-30 00:32:54,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 00:32:54,571 INFO L93 Difference]: Finished difference Result 215 states and 232 transitions. [2018-01-30 00:32:54,571 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-01-30 00:32:54,571 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 143 [2018-01-30 00:32:54,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 00:32:54,572 INFO L225 Difference]: With dead ends: 215 [2018-01-30 00:32:54,572 INFO L226 Difference]: Without dead ends: 135 [2018-01-30 00:32:54,572 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2018-01-30 00:32:54,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2018-01-30 00:32:54,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 125. [2018-01-30 00:32:54,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2018-01-30 00:32:54,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 133 transitions. [2018-01-30 00:32:54,577 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 133 transitions. Word has length 143 [2018-01-30 00:32:54,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 00:32:54,577 INFO L432 AbstractCegarLoop]: Abstraction has 125 states and 133 transitions. [2018-01-30 00:32:54,577 INFO L433 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-01-30 00:32:54,577 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 133 transitions. [2018-01-30 00:32:54,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2018-01-30 00:32:54,578 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 00:32:54,578 INFO L350 BasicCegarLoop]: trace histogram [9, 6, 6, 6, 6, 6, 4, 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] [2018-01-30 00:32:54,578 INFO L371 AbstractCegarLoop]: === Iteration 7 === [mainErr0AssertViolation]=== [2018-01-30 00:32:54,578 INFO L82 PathProgramCache]: Analyzing trace with hash -1412228734, now seen corresponding path program 2 times [2018-01-30 00:32:54,579 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 00:32:54,579 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 00:32:54,579 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:32:54,579 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 00:32:54,579 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:32:54,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 00:32:54,594 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 00:32:54,771 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2018-01-30 00:32:54,772 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-30 00:32:54,772 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-01-30 00:32:54,772 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-01-30 00:32:54,773 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-01-30 00:32:54,773 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-01-30 00:32:54,773 INFO L87 Difference]: Start difference. First operand 125 states and 133 transitions. Second operand 9 states. [2018-01-30 00:32:54,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 00:32:54,906 INFO L93 Difference]: Finished difference Result 210 states and 225 transitions. [2018-01-30 00:32:54,907 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-01-30 00:32:54,907 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 159 [2018-01-30 00:32:54,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 00:32:54,908 INFO L225 Difference]: With dead ends: 210 [2018-01-30 00:32:54,908 INFO L226 Difference]: Without dead ends: 204 [2018-01-30 00:32:54,908 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2018-01-30 00:32:54,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2018-01-30 00:32:54,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 165. [2018-01-30 00:32:54,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2018-01-30 00:32:54,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 179 transitions. [2018-01-30 00:32:54,917 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 179 transitions. Word has length 159 [2018-01-30 00:32:54,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 00:32:54,918 INFO L432 AbstractCegarLoop]: Abstraction has 165 states and 179 transitions. [2018-01-30 00:32:54,918 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-01-30 00:32:54,918 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 179 transitions. [2018-01-30 00:32:54,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2018-01-30 00:32:54,919 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 00:32:54,919 INFO L350 BasicCegarLoop]: trace histogram [10, 7, 7, 7, 7, 6, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 00:32:54,919 INFO L371 AbstractCegarLoop]: === Iteration 8 === [mainErr0AssertViolation]=== [2018-01-30 00:32:54,919 INFO L82 PathProgramCache]: Analyzing trace with hash -1308538474, now seen corresponding path program 1 times [2018-01-30 00:32:54,920 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 00:32:54,920 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 00:32:54,920 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:32:54,920 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 00:32:54,920 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:32:54,927 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-30 00:32:54,928 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-30 00:32:54,928 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2018-01-30 00:32:54,940 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-30 00:32:54,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 00:32:54,965 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 00:32:55,108 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 214 trivial. 0 not checked. [2018-01-30 00:32:55,125 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-30 00:32:55,125 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-01-30 00:32:55,126 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-01-30 00:32:55,126 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-01-30 00:32:55,126 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2018-01-30 00:32:55,126 INFO L87 Difference]: Start difference. First operand 165 states and 179 transitions. Second operand 9 states. [2018-01-30 00:32:55,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 00:32:55,212 INFO L93 Difference]: Finished difference Result 306 states and 334 transitions. [2018-01-30 00:32:55,217 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-01-30 00:32:55,218 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 169 [2018-01-30 00:32:55,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 00:32:55,218 INFO L225 Difference]: With dead ends: 306 [2018-01-30 00:32:55,219 INFO L226 Difference]: Without dead ends: 178 [2018-01-30 00:32:55,219 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=132, Unknown=0, NotChecked=0, Total=210 [2018-01-30 00:32:55,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2018-01-30 00:32:55,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 173. [2018-01-30 00:32:55,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2018-01-30 00:32:55,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 187 transitions. [2018-01-30 00:32:55,226 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 187 transitions. Word has length 169 [2018-01-30 00:32:55,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 00:32:55,226 INFO L432 AbstractCegarLoop]: Abstraction has 173 states and 187 transitions. [2018-01-30 00:32:55,226 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-01-30 00:32:55,226 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 187 transitions. [2018-01-30 00:32:55,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2018-01-30 00:32:55,228 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 00:32:55,228 INFO L350 BasicCegarLoop]: trace histogram [10, 7, 7, 7, 7, 6, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-01-30 00:32:55,228 INFO L371 AbstractCegarLoop]: === Iteration 9 === [mainErr0AssertViolation]=== [2018-01-30 00:32:55,228 INFO L82 PathProgramCache]: Analyzing trace with hash 977564863, now seen corresponding path program 2 times [2018-01-30 00:32:55,228 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 00:32:55,228 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 00:32:55,229 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:32:55,229 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 00:32:55,229 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:32:55,236 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-30 00:32:55,236 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-30 00:32:55,236 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-30 00:32:55,252 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-30 00:32:55,262 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:32:55,273 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:32:55,275 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 00:32:55,278 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 00:32:55,397 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 214 trivial. 0 not checked. [2018-01-30 00:32:55,414 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-30 00:32:55,414 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2018-01-30 00:32:55,415 INFO L409 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-01-30 00:32:55,415 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-01-30 00:32:55,415 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-01-30 00:32:55,415 INFO L87 Difference]: Start difference. First operand 173 states and 187 transitions. Second operand 11 states. [2018-01-30 00:32:55,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 00:32:55,489 INFO L93 Difference]: Finished difference Result 314 states and 342 transitions. [2018-01-30 00:32:55,490 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-01-30 00:32:55,490 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 177 [2018-01-30 00:32:55,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 00:32:55,490 INFO L225 Difference]: With dead ends: 314 [2018-01-30 00:32:55,490 INFO L226 Difference]: Without dead ends: 186 [2018-01-30 00:32:55,491 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=123, Invalid=219, Unknown=0, NotChecked=0, Total=342 [2018-01-30 00:32:55,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2018-01-30 00:32:55,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 181. [2018-01-30 00:32:55,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2018-01-30 00:32:55,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 195 transitions. [2018-01-30 00:32:55,495 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 195 transitions. Word has length 177 [2018-01-30 00:32:55,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 00:32:55,495 INFO L432 AbstractCegarLoop]: Abstraction has 181 states and 195 transitions. [2018-01-30 00:32:55,496 INFO L433 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-01-30 00:32:55,496 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 195 transitions. [2018-01-30 00:32:55,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2018-01-30 00:32:55,497 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 00:32:55,497 INFO L350 BasicCegarLoop]: trace histogram [10, 7, 7, 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-01-30 00:32:55,497 INFO L371 AbstractCegarLoop]: === Iteration 10 === [mainErr0AssertViolation]=== [2018-01-30 00:32:55,497 INFO L82 PathProgramCache]: Analyzing trace with hash 220358376, now seen corresponding path program 3 times [2018-01-30 00:32:55,497 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 00:32:55,497 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 00:32:55,498 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:32:55,498 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 00:32:55,498 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:32:55,504 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-30 00:32:55,505 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-30 00:32:55,505 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-30 00:32:55,533 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-30 00:32:55,546 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 00:32:55,550 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 00:32:55,550 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 00:32:55,552 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 00:32:55,585 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 261 trivial. 0 not checked. [2018-01-30 00:32:55,602 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-30 00:32:55,602 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-30 00:32:55,602 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-30 00:32:55,602 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-30 00:32:55,602 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-01-30 00:32:55,603 INFO L87 Difference]: Start difference. First operand 181 states and 195 transitions. Second operand 5 states. [2018-01-30 00:32:55,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 00:32:55,646 INFO L93 Difference]: Finished difference Result 313 states and 349 transitions. [2018-01-30 00:32:55,647 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-30 00:32:55,647 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 185 [2018-01-30 00:32:55,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 00:32:55,648 INFO L225 Difference]: With dead ends: 313 [2018-01-30 00:32:55,648 INFO L226 Difference]: Without dead ends: 192 [2018-01-30 00:32:55,648 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-01-30 00:32:55,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2018-01-30 00:32:55,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 179. [2018-01-30 00:32:55,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2018-01-30 00:32:55,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 191 transitions. [2018-01-30 00:32:55,652 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 191 transitions. Word has length 185 [2018-01-30 00:32:55,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 00:32:55,652 INFO L432 AbstractCegarLoop]: Abstraction has 179 states and 191 transitions. [2018-01-30 00:32:55,652 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-30 00:32:55,653 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 191 transitions. [2018-01-30 00:32:55,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2018-01-30 00:32:55,653 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 00:32:55,653 INFO L350 BasicCegarLoop]: trace histogram [12, 9, 9, 9, 9, 6, 6, 5, 5, 5, 5, 5, 5, 5, 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] [2018-01-30 00:32:55,653 INFO L371 AbstractCegarLoop]: === Iteration 11 === [mainErr0AssertViolation]=== [2018-01-30 00:32:55,654 INFO L82 PathProgramCache]: Analyzing trace with hash -908536472, now seen corresponding path program 1 times [2018-01-30 00:32:55,654 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 00:32:55,654 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 00:32:55,654 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:32:55,654 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 00:32:55,654 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:32:55,661 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-30 00:32:55,661 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-30 00:32:55,661 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-30 00:32:55,682 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 00:32:55,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 00:32:55,710 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 00:32:55,766 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2018-01-30 00:32:55,783 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-30 00:32:55,783 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2018-01-30 00:32:55,784 INFO L409 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-01-30 00:32:55,784 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-01-30 00:32:55,784 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2018-01-30 00:32:55,784 INFO L87 Difference]: Start difference. First operand 179 states and 191 transitions. Second operand 13 states. [2018-01-30 00:32:55,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 00:32:55,937 INFO L93 Difference]: Finished difference Result 318 states and 342 transitions. [2018-01-30 00:32:55,946 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-01-30 00:32:55,946 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 205 [2018-01-30 00:32:55,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 00:32:55,947 INFO L225 Difference]: With dead ends: 318 [2018-01-30 00:32:55,947 INFO L226 Difference]: Without dead ends: 192 [2018-01-30 00:32:55,947 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=178, Invalid=328, Unknown=0, NotChecked=0, Total=506 [2018-01-30 00:32:55,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2018-01-30 00:32:55,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 187. [2018-01-30 00:32:55,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2018-01-30 00:32:55,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 199 transitions. [2018-01-30 00:32:55,951 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 199 transitions. Word has length 205 [2018-01-30 00:32:55,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 00:32:55,951 INFO L432 AbstractCegarLoop]: Abstraction has 187 states and 199 transitions. [2018-01-30 00:32:55,951 INFO L433 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-01-30 00:32:55,951 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 199 transitions. [2018-01-30 00:32:55,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2018-01-30 00:32:55,952 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 00:32:55,952 INFO L350 BasicCegarLoop]: trace histogram [12, 9, 9, 9, 9, 7, 6, 6, 6, 6, 6, 6, 6, 6, 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] [2018-01-30 00:32:55,952 INFO L371 AbstractCegarLoop]: === Iteration 12 === [mainErr0AssertViolation]=== [2018-01-30 00:32:55,952 INFO L82 PathProgramCache]: Analyzing trace with hash 50552849, now seen corresponding path program 2 times [2018-01-30 00:32:55,952 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 00:32:55,952 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 00:32:55,953 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:32:55,953 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 00:32:55,953 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:32:55,961 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-30 00:32:55,961 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-30 00:32:55,961 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-30 00:32:55,968 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-30 00:32:55,981 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:32:55,997 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:32:56,000 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 00:32:56,002 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 00:32:56,096 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2018-01-30 00:32:56,114 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-30 00:32:56,114 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2018-01-30 00:32:56,114 INFO L409 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-01-30 00:32:56,114 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-01-30 00:32:56,115 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2018-01-30 00:32:56,115 INFO L87 Difference]: Start difference. First operand 187 states and 199 transitions. Second operand 15 states. [2018-01-30 00:32:56,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 00:32:56,293 INFO L93 Difference]: Finished difference Result 326 states and 350 transitions. [2018-01-30 00:32:56,298 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-01-30 00:32:56,298 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 213 [2018-01-30 00:32:56,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 00:32:56,299 INFO L225 Difference]: With dead ends: 326 [2018-01-30 00:32:56,299 INFO L226 Difference]: Without dead ends: 200 [2018-01-30 00:32:56,300 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=243, Invalid=459, Unknown=0, NotChecked=0, Total=702 [2018-01-30 00:32:56,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2018-01-30 00:32:56,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 195. [2018-01-30 00:32:56,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2018-01-30 00:32:56,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 207 transitions. [2018-01-30 00:32:56,304 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 207 transitions. Word has length 213 [2018-01-30 00:32:56,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 00:32:56,304 INFO L432 AbstractCegarLoop]: Abstraction has 195 states and 207 transitions. [2018-01-30 00:32:56,304 INFO L433 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-01-30 00:32:56,304 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 207 transitions. [2018-01-30 00:32:56,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2018-01-30 00:32:56,305 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 00:32:56,305 INFO L350 BasicCegarLoop]: trace histogram [12, 9, 9, 9, 9, 8, 7, 7, 7, 7, 7, 7, 7, 6, 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] [2018-01-30 00:32:56,305 INFO L371 AbstractCegarLoop]: === Iteration 13 === [mainErr0AssertViolation]=== [2018-01-30 00:32:56,306 INFO L82 PathProgramCache]: Analyzing trace with hash 925970874, now seen corresponding path program 3 times [2018-01-30 00:32:56,306 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 00:32:56,307 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 00:32:56,307 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:32:56,307 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 00:32:56,308 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:32:56,321 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-30 00:32:56,322 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-30 00:32:56,322 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-30 00:32:56,329 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-30 00:32:56,350 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 00:32:56,355 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 00:32:56,369 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 00:32:56,371 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 00:32:56,373 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 00:32:56,528 INFO L134 CoverageAnalysis]: Checked inductivity of 512 backedges. 106 proven. 5 refuted. 0 times theorem prover too weak. 401 trivial. 0 not checked. [2018-01-30 00:32:56,546 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-30 00:32:56,546 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-01-30 00:32:56,547 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-01-30 00:32:56,547 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-01-30 00:32:56,547 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-01-30 00:32:56,547 INFO L87 Difference]: Start difference. First operand 195 states and 207 transitions. Second operand 7 states. [2018-01-30 00:32:57,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 00:32:57,111 INFO L93 Difference]: Finished difference Result 331 states and 364 transitions. [2018-01-30 00:32:57,119 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-01-30 00:32:57,119 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 221 [2018-01-30 00:32:57,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 00:32:57,121 INFO L225 Difference]: With dead ends: 331 [2018-01-30 00:32:57,121 INFO L226 Difference]: Without dead ends: 212 [2018-01-30 00:32:57,121 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2018-01-30 00:32:57,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2018-01-30 00:32:57,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 205. [2018-01-30 00:32:57,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2018-01-30 00:32:57,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 218 transitions. [2018-01-30 00:32:57,126 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 218 transitions. Word has length 221 [2018-01-30 00:32:57,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 00:32:57,127 INFO L432 AbstractCegarLoop]: Abstraction has 205 states and 218 transitions. [2018-01-30 00:32:57,127 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-01-30 00:32:57,127 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 218 transitions. [2018-01-30 00:32:57,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2018-01-30 00:32:57,127 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 00:32:57,128 INFO L350 BasicCegarLoop]: trace histogram [15, 12, 12, 12, 12, 8, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 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] [2018-01-30 00:32:57,128 INFO L371 AbstractCegarLoop]: === Iteration 14 === [mainErr0AssertViolation]=== [2018-01-30 00:32:57,128 INFO L82 PathProgramCache]: Analyzing trace with hash -451765490, now seen corresponding path program 4 times [2018-01-30 00:32:57,128 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 00:32:57,128 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 00:32:57,128 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:32:57,128 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 00:32:57,128 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:32:57,135 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-30 00:32:57,136 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-30 00:32:57,136 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-30 00:32:57,142 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-30 00:32:57,168 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 00:32:57,170 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 00:32:57,242 INFO L134 CoverageAnalysis]: Checked inductivity of 758 backedges. 171 proven. 12 refuted. 0 times theorem prover too weak. 575 trivial. 0 not checked. [2018-01-30 00:32:57,258 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-30 00:32:57,258 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-01-30 00:32:57,259 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-01-30 00:32:57,259 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-01-30 00:32:57,259 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-01-30 00:32:57,259 INFO L87 Difference]: Start difference. First operand 205 states and 218 transitions. Second operand 7 states. [2018-01-30 00:32:57,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 00:32:57,328 INFO L93 Difference]: Finished difference Result 342 states and 375 transitions. [2018-01-30 00:32:57,336 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-01-30 00:32:57,336 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 251 [2018-01-30 00:32:57,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 00:32:57,337 INFO L225 Difference]: With dead ends: 342 [2018-01-30 00:32:57,337 INFO L226 Difference]: Without dead ends: 213 [2018-01-30 00:32:57,337 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 245 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2018-01-30 00:32:57,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2018-01-30 00:32:57,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 211. [2018-01-30 00:32:57,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2018-01-30 00:32:57,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 224 transitions. [2018-01-30 00:32:57,341 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 224 transitions. Word has length 251 [2018-01-30 00:32:57,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 00:32:57,341 INFO L432 AbstractCegarLoop]: Abstraction has 211 states and 224 transitions. [2018-01-30 00:32:57,342 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-01-30 00:32:57,342 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 224 transitions. [2018-01-30 00:32:57,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2018-01-30 00:32:57,342 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 00:32:57,343 INFO L350 BasicCegarLoop]: trace histogram [18, 15, 15, 15, 15, 9, 8, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 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] [2018-01-30 00:32:57,343 INFO L371 AbstractCegarLoop]: === Iteration 15 === [mainErr0AssertViolation]=== [2018-01-30 00:32:57,343 INFO L82 PathProgramCache]: Analyzing trace with hash -827888346, now seen corresponding path program 5 times [2018-01-30 00:32:57,343 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 00:32:57,343 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 00:32:57,343 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:32:57,343 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 00:32:57,343 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:32:57,350 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-30 00:32:57,351 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-30 00:32:57,351 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-30 00:32:57,360 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-30 00:32:57,370 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:32:57,372 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:32:57,374 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:32:57,377 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:32:57,382 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:32:57,389 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:32:57,390 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 00:32:57,392 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 00:32:57,854 INFO L134 CoverageAnalysis]: Checked inductivity of 1010 backedges. 276 proven. 27 refuted. 0 times theorem prover too weak. 707 trivial. 0 not checked. [2018-01-30 00:32:57,872 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-30 00:32:57,872 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-01-30 00:32:57,872 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-01-30 00:32:57,873 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-01-30 00:32:57,873 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2018-01-30 00:32:57,873 INFO L87 Difference]: Start difference. First operand 211 states and 224 transitions. Second operand 9 states. [2018-01-30 00:32:58,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 00:32:58,002 INFO L93 Difference]: Finished difference Result 354 states and 387 transitions. [2018-01-30 00:32:58,016 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-01-30 00:32:58,016 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 269 [2018-01-30 00:32:58,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 00:32:58,016 INFO L225 Difference]: With dead ends: 354 [2018-01-30 00:32:58,017 INFO L226 Difference]: Without dead ends: 219 [2018-01-30 00:32:58,017 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 261 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=78, Invalid=132, Unknown=0, NotChecked=0, Total=210 [2018-01-30 00:32:58,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2018-01-30 00:32:58,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 217. [2018-01-30 00:32:58,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2018-01-30 00:32:58,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 230 transitions. [2018-01-30 00:32:58,021 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 230 transitions. Word has length 269 [2018-01-30 00:32:58,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 00:32:58,021 INFO L432 AbstractCegarLoop]: Abstraction has 217 states and 230 transitions. [2018-01-30 00:32:58,021 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-01-30 00:32:58,021 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 230 transitions. [2018-01-30 00:32:58,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2018-01-30 00:32:58,022 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 00:32:58,023 INFO L350 BasicCegarLoop]: trace histogram [21, 18, 18, 18, 18, 12, 8, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 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] [2018-01-30 00:32:58,023 INFO L371 AbstractCegarLoop]: === Iteration 16 === [mainErr0AssertViolation]=== [2018-01-30 00:32:58,023 INFO L82 PathProgramCache]: Analyzing trace with hash -10401474, now seen corresponding path program 6 times [2018-01-30 00:32:58,023 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 00:32:58,023 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 00:32:58,023 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:32:58,023 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 00:32:58,023 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:32:58,030 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-30 00:32:58,030 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-30 00:32:58,030 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-30 00:32:58,042 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-30 00:32:58,054 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:32:58,056 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:32:58,060 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:32:58,118 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:32:58,127 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:32:58,156 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:32:58,215 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:32:58,216 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 00:32:58,219 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 00:32:58,275 INFO L134 CoverageAnalysis]: Checked inductivity of 1316 backedges. 536 proven. 12 refuted. 0 times theorem prover too weak. 768 trivial. 0 not checked. [2018-01-30 00:32:58,292 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-30 00:32:58,293 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-01-30 00:32:58,293 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-01-30 00:32:58,293 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-01-30 00:32:58,293 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-01-30 00:32:58,293 INFO L87 Difference]: Start difference. First operand 217 states and 230 transitions. Second operand 7 states. [2018-01-30 00:32:58,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 00:32:58,371 INFO L93 Difference]: Finished difference Result 312 states and 331 transitions. [2018-01-30 00:32:58,379 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-01-30 00:32:58,379 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 287 [2018-01-30 00:32:58,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 00:32:58,380 INFO L225 Difference]: With dead ends: 312 [2018-01-30 00:32:58,380 INFO L226 Difference]: Without dead ends: 243 [2018-01-30 00:32:58,380 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 281 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2018-01-30 00:32:58,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2018-01-30 00:32:58,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 233. [2018-01-30 00:32:58,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2018-01-30 00:32:58,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 246 transitions. [2018-01-30 00:32:58,384 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 246 transitions. Word has length 287 [2018-01-30 00:32:58,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 00:32:58,385 INFO L432 AbstractCegarLoop]: Abstraction has 233 states and 246 transitions. [2018-01-30 00:32:58,385 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-01-30 00:32:58,385 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 246 transitions. [2018-01-30 00:32:58,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2018-01-30 00:32:58,386 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 00:32:58,386 INFO L350 BasicCegarLoop]: trace histogram [21, 18, 18, 18, 18, 12, 8, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 4, 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] [2018-01-30 00:32:58,386 INFO L371 AbstractCegarLoop]: === Iteration 17 === [mainErr0AssertViolation]=== [2018-01-30 00:32:58,386 INFO L82 PathProgramCache]: Analyzing trace with hash -2056122891, now seen corresponding path program 7 times [2018-01-30 00:32:58,386 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 00:32:58,386 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 00:32:58,387 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:32:58,387 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 00:32:58,387 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:32:58,395 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-30 00:32:58,395 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-30 00:32:58,395 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2018-01-30 00:32:58,410 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-30 00:32:58,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 00:32:58,454 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 00:32:58,802 INFO L134 CoverageAnalysis]: Checked inductivity of 1334 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 1152 trivial. 0 not checked. [2018-01-30 00:32:58,820 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-30 00:32:58,820 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2018-01-30 00:32:58,821 INFO L409 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-01-30 00:32:58,821 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-01-30 00:32:58,821 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2018-01-30 00:32:58,821 INFO L87 Difference]: Start difference. First operand 233 states and 246 transitions. Second operand 17 states. [2018-01-30 00:32:58,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 00:32:58,949 INFO L93 Difference]: Finished difference Result 410 states and 436 transitions. [2018-01-30 00:32:58,950 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-01-30 00:32:58,950 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 295 [2018-01-30 00:32:58,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 00:32:58,951 INFO L225 Difference]: With dead ends: 410 [2018-01-30 00:32:58,951 INFO L226 Difference]: Without dead ends: 246 [2018-01-30 00:32:58,952 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 279 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=318, Invalid=612, Unknown=0, NotChecked=0, Total=930 [2018-01-30 00:32:58,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2018-01-30 00:32:58,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 241. [2018-01-30 00:32:58,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2018-01-30 00:32:58,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 254 transitions. [2018-01-30 00:32:58,957 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 254 transitions. Word has length 295 [2018-01-30 00:32:58,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 00:32:58,957 INFO L432 AbstractCegarLoop]: Abstraction has 241 states and 254 transitions. [2018-01-30 00:32:58,957 INFO L433 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-01-30 00:32:58,957 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 254 transitions. [2018-01-30 00:32:58,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2018-01-30 00:32:58,958 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 00:32:58,958 INFO L350 BasicCegarLoop]: trace histogram [21, 18, 18, 18, 18, 12, 9, 8, 8, 8, 8, 8, 8, 8, 6, 6, 6, 6, 6, 4, 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] [2018-01-30 00:32:58,959 INFO L371 AbstractCegarLoop]: === Iteration 18 === [mainErr0AssertViolation]=== [2018-01-30 00:32:58,959 INFO L82 PathProgramCache]: Analyzing trace with hash -1377280162, now seen corresponding path program 8 times [2018-01-30 00:32:58,959 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 00:32:58,959 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 00:32:58,959 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:32:58,959 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 00:32:58,959 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:32:58,966 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-30 00:32:58,966 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-30 00:32:58,966 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-30 00:32:58,979 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-30 00:32:58,991 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:32:59,010 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:32:59,014 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 00:32:59,016 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 00:32:59,271 INFO L134 CoverageAnalysis]: Checked inductivity of 1392 backedges. 0 proven. 240 refuted. 0 times theorem prover too weak. 1152 trivial. 0 not checked. [2018-01-30 00:32:59,288 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-30 00:32:59,288 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2018-01-30 00:32:59,288 INFO L409 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-01-30 00:32:59,288 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-01-30 00:32:59,289 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2018-01-30 00:32:59,289 INFO L87 Difference]: Start difference. First operand 241 states and 254 transitions. Second operand 19 states. [2018-01-30 00:32:59,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 00:32:59,584 INFO L93 Difference]: Finished difference Result 418 states and 444 transitions. [2018-01-30 00:32:59,585 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-01-30 00:32:59,585 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 303 [2018-01-30 00:32:59,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 00:32:59,586 INFO L225 Difference]: With dead ends: 418 [2018-01-30 00:32:59,586 INFO L226 Difference]: Without dead ends: 254 [2018-01-30 00:32:59,586 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 318 GetRequests, 285 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=403, Invalid=787, Unknown=0, NotChecked=0, Total=1190 [2018-01-30 00:32:59,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2018-01-30 00:32:59,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 249. [2018-01-30 00:32:59,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2018-01-30 00:32:59,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 262 transitions. [2018-01-30 00:32:59,591 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 262 transitions. Word has length 303 [2018-01-30 00:32:59,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 00:32:59,591 INFO L432 AbstractCegarLoop]: Abstraction has 249 states and 262 transitions. [2018-01-30 00:32:59,591 INFO L433 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-01-30 00:32:59,591 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 262 transitions. [2018-01-30 00:32:59,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2018-01-30 00:32:59,592 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 00:32:59,592 INFO L350 BasicCegarLoop]: trace histogram [21, 18, 18, 18, 18, 12, 10, 9, 9, 9, 9, 9, 9, 9, 6, 6, 6, 6, 6, 4, 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] [2018-01-30 00:32:59,592 INFO L371 AbstractCegarLoop]: === Iteration 19 === [mainErr0AssertViolation]=== [2018-01-30 00:32:59,593 INFO L82 PathProgramCache]: Analyzing trace with hash 2005874631, now seen corresponding path program 9 times [2018-01-30 00:32:59,593 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 00:32:59,593 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 00:32:59,594 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:32:59,594 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 00:32:59,594 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:32:59,601 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-30 00:32:59,601 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-30 00:32:59,601 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2018-01-30 00:32:59,616 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-30 00:32:59,631 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 00:32:59,635 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 00:32:59,688 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 00:32:59,707 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 00:32:59,763 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 00:32:59,764 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 00:32:59,767 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 00:32:59,854 INFO L134 CoverageAnalysis]: Checked inductivity of 1458 backedges. 315 proven. 20 refuted. 0 times theorem prover too weak. 1123 trivial. 0 not checked. [2018-01-30 00:32:59,871 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-30 00:32:59,871 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-01-30 00:32:59,872 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-01-30 00:32:59,872 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-01-30 00:32:59,872 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2018-01-30 00:32:59,872 INFO L87 Difference]: Start difference. First operand 249 states and 262 transitions. Second operand 9 states. [2018-01-30 00:32:59,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 00:32:59,973 INFO L93 Difference]: Finished difference Result 423 states and 458 transitions. [2018-01-30 00:32:59,986 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-01-30 00:32:59,986 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 311 [2018-01-30 00:32:59,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 00:32:59,987 INFO L225 Difference]: With dead ends: 423 [2018-01-30 00:32:59,987 INFO L226 Difference]: Without dead ends: 266 [2018-01-30 00:32:59,988 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 303 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=78, Invalid=132, Unknown=0, NotChecked=0, Total=210 [2018-01-30 00:32:59,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2018-01-30 00:32:59,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 259. [2018-01-30 00:32:59,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2018-01-30 00:32:59,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 273 transitions. [2018-01-30 00:32:59,992 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 273 transitions. Word has length 311 [2018-01-30 00:32:59,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 00:32:59,992 INFO L432 AbstractCegarLoop]: Abstraction has 259 states and 273 transitions. [2018-01-30 00:32:59,992 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-01-30 00:32:59,992 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 273 transitions. [2018-01-30 00:32:59,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2018-01-30 00:32:59,994 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 00:32:59,995 INFO L350 BasicCegarLoop]: trace histogram [24, 21, 21, 21, 21, 12, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 4, 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] [2018-01-30 00:32:59,995 INFO L371 AbstractCegarLoop]: === Iteration 20 === [mainErr0AssertViolation]=== [2018-01-30 00:32:59,995 INFO L82 PathProgramCache]: Analyzing trace with hash 161082331, now seen corresponding path program 10 times [2018-01-30 00:32:59,995 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 00:32:59,995 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 00:32:59,995 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:32:59,995 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 00:32:59,995 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:33:00,005 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-30 00:33:00,005 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-30 00:33:00,005 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2018-01-30 00:33:00,016 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-30 00:33:00,046 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 00:33:00,049 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 00:33:00,141 INFO L134 CoverageAnalysis]: Checked inductivity of 1902 backedges. 486 proven. 48 refuted. 0 times theorem prover too weak. 1368 trivial. 0 not checked. [2018-01-30 00:33:00,158 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-30 00:33:00,159 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2018-01-30 00:33:00,159 INFO L409 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-01-30 00:33:00,159 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-01-30 00:33:00,159 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-01-30 00:33:00,159 INFO L87 Difference]: Start difference. First operand 259 states and 273 transitions. Second operand 11 states. [2018-01-30 00:33:00,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 00:33:00,297 INFO L93 Difference]: Finished difference Result 434 states and 469 transitions. [2018-01-30 00:33:00,297 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-01-30 00:33:00,297 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 341 [2018-01-30 00:33:00,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 00:33:00,298 INFO L225 Difference]: With dead ends: 434 [2018-01-30 00:33:00,298 INFO L226 Difference]: Without dead ends: 267 [2018-01-30 00:33:00,299 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 348 GetRequests, 331 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=123, Invalid=219, Unknown=0, NotChecked=0, Total=342 [2018-01-30 00:33:00,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2018-01-30 00:33:00,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 265. [2018-01-30 00:33:00,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265 states. [2018-01-30 00:33:00,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 279 transitions. [2018-01-30 00:33:00,303 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 279 transitions. Word has length 341 [2018-01-30 00:33:00,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 00:33:00,303 INFO L432 AbstractCegarLoop]: Abstraction has 265 states and 279 transitions. [2018-01-30 00:33:00,303 INFO L433 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-01-30 00:33:00,303 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 279 transitions. [2018-01-30 00:33:00,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2018-01-30 00:33:00,304 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 00:33:00,304 INFO L350 BasicCegarLoop]: trace histogram [27, 24, 24, 24, 24, 15, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 4, 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] [2018-01-30 00:33:00,304 INFO L371 AbstractCegarLoop]: === Iteration 21 === [mainErr0AssertViolation]=== [2018-01-30 00:33:00,304 INFO L82 PathProgramCache]: Analyzing trace with hash -918003405, now seen corresponding path program 11 times [2018-01-30 00:33:00,305 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 00:33:00,305 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 00:33:00,305 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:33:00,305 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 00:33:00,305 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:33:00,312 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-30 00:33:00,312 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-30 00:33:00,312 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2018-01-30 00:33:00,317 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-30 00:33:00,326 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:33:00,328 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:33:00,330 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:33:00,332 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:33:00,335 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:33:00,338 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:33:00,342 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:33:00,349 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:33:00,357 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:33:00,359 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 00:33:00,361 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 00:33:00,534 INFO L134 CoverageAnalysis]: Checked inductivity of 2316 backedges. 657 proven. 75 refuted. 0 times theorem prover too weak. 1584 trivial. 0 not checked. [2018-01-30 00:33:00,552 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-30 00:33:00,552 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2018-01-30 00:33:00,553 INFO L409 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-01-30 00:33:00,553 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-01-30 00:33:00,553 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2018-01-30 00:33:00,553 INFO L87 Difference]: Start difference. First operand 265 states and 279 transitions. Second operand 13 states. [2018-01-30 00:33:00,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 00:33:00,663 INFO L93 Difference]: Finished difference Result 446 states and 481 transitions. [2018-01-30 00:33:00,665 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-01-30 00:33:00,665 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 359 [2018-01-30 00:33:00,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 00:33:00,666 INFO L225 Difference]: With dead ends: 446 [2018-01-30 00:33:00,666 INFO L226 Difference]: Without dead ends: 273 [2018-01-30 00:33:00,666 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 347 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=178, Invalid=328, Unknown=0, NotChecked=0, Total=506 [2018-01-30 00:33:00,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2018-01-30 00:33:00,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 271. [2018-01-30 00:33:00,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2018-01-30 00:33:00,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 285 transitions. [2018-01-30 00:33:00,671 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 285 transitions. Word has length 359 [2018-01-30 00:33:00,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 00:33:00,671 INFO L432 AbstractCegarLoop]: Abstraction has 271 states and 285 transitions. [2018-01-30 00:33:00,671 INFO L433 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-01-30 00:33:00,671 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 285 transitions. [2018-01-30 00:33:00,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2018-01-30 00:33:00,672 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 00:33:00,672 INFO L350 BasicCegarLoop]: trace histogram [30, 27, 27, 27, 27, 18, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 4, 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] [2018-01-30 00:33:00,672 INFO L371 AbstractCegarLoop]: === Iteration 22 === [mainErr0AssertViolation]=== [2018-01-30 00:33:00,673 INFO L82 PathProgramCache]: Analyzing trace with hash -1797410677, now seen corresponding path program 12 times [2018-01-30 00:33:00,673 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 00:33:00,673 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 00:33:00,673 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:33:00,673 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 00:33:00,673 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:33:00,680 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-30 00:33:00,680 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-30 00:33:00,680 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-30 00:33:00,703 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-30 00:33:00,715 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:33:00,718 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:33:00,721 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:33:00,725 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:33:00,731 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:33:00,743 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:33:00,751 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:33:00,931 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:33:01,014 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:33:01,015 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 00:33:01,018 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 00:33:01,224 INFO L134 CoverageAnalysis]: Checked inductivity of 2784 backedges. 1140 proven. 30 refuted. 0 times theorem prover too weak. 1614 trivial. 0 not checked. [2018-01-30 00:33:01,242 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-30 00:33:01,242 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-01-30 00:33:01,242 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-01-30 00:33:01,242 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-01-30 00:33:01,243 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2018-01-30 00:33:01,243 INFO L87 Difference]: Start difference. First operand 271 states and 285 transitions. Second operand 9 states. [2018-01-30 00:33:01,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 00:33:01,340 INFO L93 Difference]: Finished difference Result 388 states and 409 transitions. [2018-01-30 00:33:01,340 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-01-30 00:33:01,340 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 377 [2018-01-30 00:33:01,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 00:33:01,346 INFO L225 Difference]: With dead ends: 388 [2018-01-30 00:33:01,346 INFO L226 Difference]: Without dead ends: 297 [2018-01-30 00:33:01,346 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 382 GetRequests, 369 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=132, Unknown=0, NotChecked=0, Total=210 [2018-01-30 00:33:01,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2018-01-30 00:33:01,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 287. [2018-01-30 00:33:01,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2018-01-30 00:33:01,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 301 transitions. [2018-01-30 00:33:01,353 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 301 transitions. Word has length 377 [2018-01-30 00:33:01,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 00:33:01,353 INFO L432 AbstractCegarLoop]: Abstraction has 287 states and 301 transitions. [2018-01-30 00:33:01,353 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-01-30 00:33:01,353 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 301 transitions. [2018-01-30 00:33:01,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2018-01-30 00:33:01,355 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 00:33:01,355 INFO L350 BasicCegarLoop]: trace histogram [30, 27, 27, 27, 27, 18, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 5, 4, 4, 4, 4, 4, 4, 4, 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] [2018-01-30 00:33:01,355 INFO L371 AbstractCegarLoop]: === Iteration 23 === [mainErr0AssertViolation]=== [2018-01-30 00:33:01,355 INFO L82 PathProgramCache]: Analyzing trace with hash 556198146, now seen corresponding path program 13 times [2018-01-30 00:33:01,355 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 00:33:01,355 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 00:33:01,356 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:33:01,356 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 00:33:01,356 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:33:01,364 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-30 00:33:01,364 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-30 00:33:01,364 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-30 00:33:01,369 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 00:33:01,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 00:33:01,411 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 00:33:01,711 INFO L134 CoverageAnalysis]: Checked inductivity of 2810 backedges. 0 proven. 306 refuted. 0 times theorem prover too weak. 2504 trivial. 0 not checked. [2018-01-30 00:33:01,730 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-30 00:33:01,730 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2018-01-30 00:33:01,730 INFO L409 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-01-30 00:33:01,730 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-01-30 00:33:01,730 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2018-01-30 00:33:01,730 INFO L87 Difference]: Start difference. First operand 287 states and 301 transitions. Second operand 21 states. [2018-01-30 00:33:01,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 00:33:01,917 INFO L93 Difference]: Finished difference Result 502 states and 530 transitions. [2018-01-30 00:33:01,922 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-01-30 00:33:01,922 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 385 [2018-01-30 00:33:01,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 00:33:01,923 INFO L225 Difference]: With dead ends: 502 [2018-01-30 00:33:01,923 INFO L226 Difference]: Without dead ends: 300 [2018-01-30 00:33:01,924 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 365 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=498, Invalid=984, Unknown=0, NotChecked=0, Total=1482 [2018-01-30 00:33:01,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2018-01-30 00:33:01,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 295. [2018-01-30 00:33:01,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 295 states. [2018-01-30 00:33:01,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 309 transitions. [2018-01-30 00:33:01,929 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 309 transitions. Word has length 385 [2018-01-30 00:33:01,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 00:33:01,929 INFO L432 AbstractCegarLoop]: Abstraction has 295 states and 309 transitions. [2018-01-30 00:33:01,929 INFO L433 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-01-30 00:33:01,929 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 309 transitions. [2018-01-30 00:33:01,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 394 [2018-01-30 00:33:01,930 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 00:33:01,931 INFO L350 BasicCegarLoop]: trace histogram [30, 27, 27, 27, 27, 18, 11, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 5, 4, 4, 4, 4, 4, 4, 4, 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] [2018-01-30 00:33:01,931 INFO L371 AbstractCegarLoop]: === Iteration 24 === [mainErr0AssertViolation]=== [2018-01-30 00:33:01,931 INFO L82 PathProgramCache]: Analyzing trace with hash 248779051, now seen corresponding path program 14 times [2018-01-30 00:33:01,931 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 00:33:01,931 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 00:33:01,931 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:33:01,931 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 00:33:01,931 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:33:01,938 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-30 00:33:01,939 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-30 00:33:01,939 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2018-01-30 00:33:01,945 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-30 00:33:01,959 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:33:01,983 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:33:01,987 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 00:33:01,990 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 00:33:02,372 INFO L134 CoverageAnalysis]: Checked inductivity of 2884 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 2504 trivial. 0 not checked. [2018-01-30 00:33:02,388 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-30 00:33:02,389 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2018-01-30 00:33:02,389 INFO L409 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-01-30 00:33:02,389 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-01-30 00:33:02,389 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2018-01-30 00:33:02,389 INFO L87 Difference]: Start difference. First operand 295 states and 309 transitions. Second operand 23 states. [2018-01-30 00:33:02,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 00:33:02,641 INFO L93 Difference]: Finished difference Result 510 states and 538 transitions. [2018-01-30 00:33:02,641 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-01-30 00:33:02,641 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 393 [2018-01-30 00:33:02,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 00:33:02,642 INFO L225 Difference]: With dead ends: 510 [2018-01-30 00:33:02,642 INFO L226 Difference]: Without dead ends: 308 [2018-01-30 00:33:02,643 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 412 GetRequests, 371 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 280 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=603, Invalid=1203, Unknown=0, NotChecked=0, Total=1806 [2018-01-30 00:33:02,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2018-01-30 00:33:02,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 303. [2018-01-30 00:33:02,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 303 states. [2018-01-30 00:33:02,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 317 transitions. [2018-01-30 00:33:02,657 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 317 transitions. Word has length 393 [2018-01-30 00:33:02,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 00:33:02,657 INFO L432 AbstractCegarLoop]: Abstraction has 303 states and 317 transitions. [2018-01-30 00:33:02,657 INFO L433 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-01-30 00:33:02,657 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 317 transitions. [2018-01-30 00:33:02,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 402 [2018-01-30 00:33:02,666 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 00:33:02,666 INFO L350 BasicCegarLoop]: trace histogram [30, 27, 27, 27, 27, 18, 12, 11, 11, 11, 11, 11, 11, 11, 9, 9, 9, 9, 9, 5, 4, 4, 4, 4, 4, 4, 4, 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] [2018-01-30 00:33:02,666 INFO L371 AbstractCegarLoop]: === Iteration 25 === [mainErr0AssertViolation]=== [2018-01-30 00:33:02,666 INFO L82 PathProgramCache]: Analyzing trace with hash 1875837012, now seen corresponding path program 15 times [2018-01-30 00:33:02,666 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 00:33:02,666 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 00:33:02,667 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:33:02,667 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 00:33:02,667 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:33:02,679 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-30 00:33:02,679 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-30 00:33:02,679 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-30 00:33:02,705 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-30 00:33:02,719 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 00:33:02,724 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 00:33:02,772 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 00:33:02,794 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 00:33:03,981 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 00:33:04,050 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 00:33:04,051 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 00:33:04,055 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 00:33:04,311 INFO L134 CoverageAnalysis]: Checked inductivity of 2966 backedges. 1140 proven. 56 refuted. 0 times theorem prover too weak. 1770 trivial. 0 not checked. [2018-01-30 00:33:04,330 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-30 00:33:04,330 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2018-01-30 00:33:04,331 INFO L409 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-01-30 00:33:04,331 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-01-30 00:33:04,331 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-01-30 00:33:04,331 INFO L87 Difference]: Start difference. First operand 303 states and 317 transitions. Second operand 11 states. [2018-01-30 00:33:04,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 00:33:04,393 INFO L93 Difference]: Finished difference Result 420 states and 441 transitions. [2018-01-30 00:33:04,394 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-01-30 00:33:04,394 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 401 [2018-01-30 00:33:04,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 00:33:04,395 INFO L225 Difference]: With dead ends: 420 [2018-01-30 00:33:04,395 INFO L226 Difference]: Without dead ends: 329 [2018-01-30 00:33:04,395 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 408 GetRequests, 391 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=123, Invalid=219, Unknown=0, NotChecked=0, Total=342 [2018-01-30 00:33:04,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2018-01-30 00:33:04,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 319. [2018-01-30 00:33:04,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 319 states. [2018-01-30 00:33:04,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 333 transitions. [2018-01-30 00:33:04,399 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 333 transitions. Word has length 401 [2018-01-30 00:33:04,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 00:33:04,400 INFO L432 AbstractCegarLoop]: Abstraction has 319 states and 333 transitions. [2018-01-30 00:33:04,400 INFO L433 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-01-30 00:33:04,400 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 333 transitions. [2018-01-30 00:33:04,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 410 [2018-01-30 00:33:04,401 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 00:33:04,401 INFO L350 BasicCegarLoop]: trace histogram [30, 27, 27, 27, 27, 18, 12, 11, 11, 11, 11, 11, 11, 11, 9, 9, 9, 9, 9, 6, 5, 5, 5, 5, 5, 5, 5, 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] [2018-01-30 00:33:04,401 INFO L371 AbstractCegarLoop]: === Iteration 26 === [mainErr0AssertViolation]=== [2018-01-30 00:33:04,401 INFO L82 PathProgramCache]: Analyzing trace with hash 51666891, now seen corresponding path program 16 times [2018-01-30 00:33:04,401 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 00:33:04,401 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 00:33:04,402 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:33:04,402 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 00:33:04,402 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:33:04,409 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-30 00:33:04,409 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-30 00:33:04,409 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-30 00:33:04,423 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-30 00:33:04,460 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 00:33:04,463 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 00:33:04,582 INFO L134 CoverageAnalysis]: Checked inductivity of 3000 backedges. 852 proven. 108 refuted. 0 times theorem prover too weak. 2040 trivial. 0 not checked. [2018-01-30 00:33:04,599 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-30 00:33:04,600 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2018-01-30 00:33:04,600 INFO L409 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-01-30 00:33:04,600 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-01-30 00:33:04,600 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2018-01-30 00:33:04,600 INFO L87 Difference]: Start difference. First operand 319 states and 333 transitions. Second operand 15 states. [2018-01-30 00:33:04,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 00:33:04,909 INFO L93 Difference]: Finished difference Result 538 states and 573 transitions. [2018-01-30 00:33:04,909 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-01-30 00:33:04,909 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 409 [2018-01-30 00:33:04,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 00:33:04,910 INFO L225 Difference]: With dead ends: 538 [2018-01-30 00:33:04,910 INFO L226 Difference]: Without dead ends: 327 [2018-01-30 00:33:04,911 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 420 GetRequests, 395 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=243, Invalid=459, Unknown=0, NotChecked=0, Total=702 [2018-01-30 00:33:04,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2018-01-30 00:33:04,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 325. [2018-01-30 00:33:04,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 325 states. [2018-01-30 00:33:04,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 339 transitions. [2018-01-30 00:33:04,915 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 339 transitions. Word has length 409 [2018-01-30 00:33:04,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 00:33:04,915 INFO L432 AbstractCegarLoop]: Abstraction has 325 states and 339 transitions. [2018-01-30 00:33:04,915 INFO L433 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-01-30 00:33:04,915 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 339 transitions. [2018-01-30 00:33:04,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 428 [2018-01-30 00:33:04,917 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 00:33:04,917 INFO L350 BasicCegarLoop]: trace histogram [33, 30, 30, 30, 30, 21, 12, 11, 11, 11, 11, 11, 11, 11, 9, 9, 9, 9, 9, 6, 5, 5, 5, 5, 5, 5, 5, 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] [2018-01-30 00:33:04,917 INFO L371 AbstractCegarLoop]: === Iteration 27 === [mainErr0AssertViolation]=== [2018-01-30 00:33:04,917 INFO L82 PathProgramCache]: Analyzing trace with hash -1154159069, now seen corresponding path program 17 times [2018-01-30 00:33:04,917 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 00:33:04,917 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 00:33:04,917 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:33:04,918 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 00:33:04,918 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:33:04,925 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-30 00:33:04,925 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-30 00:33:04,925 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-30 00:33:04,941 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-30 00:33:04,952 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:33:04,953 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:33:04,955 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:33:04,958 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:33:04,960 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:33:04,963 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:33:04,967 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:33:04,975 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:33:04,995 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:33:05,054 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:33:05,108 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:33:05,109 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 00:33:05,112 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 00:33:06,354 INFO L134 CoverageAnalysis]: Checked inductivity of 3522 backedges. 1071 proven. 147 refuted. 0 times theorem prover too weak. 2304 trivial. 0 not checked. [2018-01-30 00:33:06,372 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-30 00:33:06,373 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2018-01-30 00:33:06,373 INFO L409 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-01-30 00:33:06,373 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-01-30 00:33:06,373 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2018-01-30 00:33:06,373 INFO L87 Difference]: Start difference. First operand 325 states and 339 transitions. Second operand 17 states. [2018-01-30 00:33:06,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 00:33:06,534 INFO L93 Difference]: Finished difference Result 550 states and 585 transitions. [2018-01-30 00:33:06,534 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-01-30 00:33:06,534 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 427 [2018-01-30 00:33:06,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 00:33:06,535 INFO L225 Difference]: With dead ends: 550 [2018-01-30 00:33:06,535 INFO L226 Difference]: Without dead ends: 333 [2018-01-30 00:33:06,535 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 440 GetRequests, 411 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=318, Invalid=612, Unknown=0, NotChecked=0, Total=930 [2018-01-30 00:33:06,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2018-01-30 00:33:06,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 331. [2018-01-30 00:33:06,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 331 states. [2018-01-30 00:33:06,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 345 transitions. [2018-01-30 00:33:06,539 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 345 transitions. Word has length 427 [2018-01-30 00:33:06,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 00:33:06,540 INFO L432 AbstractCegarLoop]: Abstraction has 331 states and 345 transitions. [2018-01-30 00:33:06,540 INFO L433 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-01-30 00:33:06,540 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 345 transitions. [2018-01-30 00:33:06,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 446 [2018-01-30 00:33:06,541 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 00:33:06,541 INFO L350 BasicCegarLoop]: trace histogram [36, 33, 33, 33, 33, 24, 12, 11, 11, 11, 11, 11, 11, 11, 9, 9, 9, 9, 9, 6, 5, 5, 5, 5, 5, 5, 5, 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] [2018-01-30 00:33:06,541 INFO L371 AbstractCegarLoop]: === Iteration 28 === [mainErr0AssertViolation]=== [2018-01-30 00:33:06,541 INFO L82 PathProgramCache]: Analyzing trace with hash -483371397, now seen corresponding path program 18 times [2018-01-30 00:33:06,541 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 00:33:06,542 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 00:33:06,542 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:33:06,542 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 00:33:06,542 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:33:06,549 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-30 00:33:06,549 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-30 00:33:06,549 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-30 00:33:06,573 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-30 00:33:06,587 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:33:06,589 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:33:06,593 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:33:06,597 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:33:06,606 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:33:06,617 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:33:06,628 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:33:06,693 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:33:06,722 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:33:06,742 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:33:06,861 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:33:06,862 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 00:33:06,869 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 00:33:07,053 INFO L134 CoverageAnalysis]: Checked inductivity of 4098 backedges. 856 proven. 45 refuted. 0 times theorem prover too weak. 3197 trivial. 0 not checked. [2018-01-30 00:33:07,071 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-30 00:33:07,071 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2018-01-30 00:33:07,071 INFO L409 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-01-30 00:33:07,071 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-01-30 00:33:07,071 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2018-01-30 00:33:07,072 INFO L87 Difference]: Start difference. First operand 331 states and 345 transitions. Second operand 14 states. [2018-01-30 00:33:07,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 00:33:07,194 INFO L93 Difference]: Finished difference Result 571 states and 608 transitions. [2018-01-30 00:33:07,194 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-01-30 00:33:07,194 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 445 [2018-01-30 00:33:07,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 00:33:07,195 INFO L225 Difference]: With dead ends: 571 [2018-01-30 00:33:07,195 INFO L226 Difference]: Without dead ends: 348 [2018-01-30 00:33:07,196 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 454 GetRequests, 432 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=140, Invalid=412, Unknown=0, NotChecked=0, Total=552 [2018-01-30 00:33:07,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2018-01-30 00:33:07,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 341. [2018-01-30 00:33:07,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 341 states. [2018-01-30 00:33:07,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 356 transitions. [2018-01-30 00:33:07,200 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 356 transitions. Word has length 445 [2018-01-30 00:33:07,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 00:33:07,201 INFO L432 AbstractCegarLoop]: Abstraction has 341 states and 356 transitions. [2018-01-30 00:33:07,201 INFO L433 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-01-30 00:33:07,201 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 356 transitions. [2018-01-30 00:33:07,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 476 [2018-01-30 00:33:07,202 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 00:33:07,203 INFO L350 BasicCegarLoop]: trace histogram [39, 36, 36, 36, 36, 24, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 6, 5, 5, 5, 5, 5, 5, 5, 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] [2018-01-30 00:33:07,203 INFO L371 AbstractCegarLoop]: === Iteration 29 === [mainErr0AssertViolation]=== [2018-01-30 00:33:07,203 INFO L82 PathProgramCache]: Analyzing trace with hash -2032134513, now seen corresponding path program 19 times [2018-01-30 00:33:07,203 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 00:33:07,203 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 00:33:07,204 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:33:07,204 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 00:33:07,204 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:33:07,211 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-30 00:33:07,211 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-30 00:33:07,211 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-30 00:33:07,223 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 00:33:07,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 00:33:07,271 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 00:33:07,493 INFO L134 CoverageAnalysis]: Checked inductivity of 4848 backedges. 0 proven. 462 refuted. 0 times theorem prover too weak. 4386 trivial. 0 not checked. [2018-01-30 00:33:07,511 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-30 00:33:07,511 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2018-01-30 00:33:07,511 INFO L409 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-01-30 00:33:07,512 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-01-30 00:33:07,512 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=432, Unknown=0, NotChecked=0, Total=600 [2018-01-30 00:33:07,512 INFO L87 Difference]: Start difference. First operand 341 states and 356 transitions. Second operand 25 states. [2018-01-30 00:33:07,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 00:33:07,786 INFO L93 Difference]: Finished difference Result 594 states and 624 transitions. [2018-01-30 00:33:07,790 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-01-30 00:33:07,790 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 475 [2018-01-30 00:33:07,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 00:33:07,791 INFO L225 Difference]: With dead ends: 594 [2018-01-30 00:33:07,791 INFO L226 Difference]: Without dead ends: 354 [2018-01-30 00:33:07,792 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 496 GetRequests, 451 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=718, Invalid=1444, Unknown=0, NotChecked=0, Total=2162 [2018-01-30 00:33:07,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2018-01-30 00:33:07,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 349. [2018-01-30 00:33:07,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 349 states. [2018-01-30 00:33:07,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 364 transitions. [2018-01-30 00:33:07,796 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 364 transitions. Word has length 475 [2018-01-30 00:33:07,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 00:33:07,797 INFO L432 AbstractCegarLoop]: Abstraction has 349 states and 364 transitions. [2018-01-30 00:33:07,797 INFO L433 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-01-30 00:33:07,797 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 364 transitions. [2018-01-30 00:33:07,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 484 [2018-01-30 00:33:07,798 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 00:33:07,799 INFO L350 BasicCegarLoop]: trace histogram [39, 36, 36, 36, 36, 24, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 6, 5, 5, 5, 5, 5, 5, 5, 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] [2018-01-30 00:33:07,799 INFO L371 AbstractCegarLoop]: === Iteration 30 === [mainErr0AssertViolation]=== [2018-01-30 00:33:07,799 INFO L82 PathProgramCache]: Analyzing trace with hash 8070520, now seen corresponding path program 20 times [2018-01-30 00:33:07,799 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 00:33:07,799 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 00:33:07,799 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:33:07,799 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 00:33:07,800 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:33:07,807 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-30 00:33:07,807 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-30 00:33:07,807 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-30 00:33:07,823 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-30 00:33:07,837 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:33:07,866 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:33:07,872 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 00:33:07,875 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 00:33:08,515 INFO L134 CoverageAnalysis]: Checked inductivity of 4938 backedges. 0 proven. 552 refuted. 0 times theorem prover too weak. 4386 trivial. 0 not checked. [2018-01-30 00:33:08,532 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-30 00:33:08,532 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2018-01-30 00:33:08,532 INFO L409 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-01-30 00:33:08,532 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-01-30 00:33:08,532 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=507, Unknown=0, NotChecked=0, Total=702 [2018-01-30 00:33:08,533 INFO L87 Difference]: Start difference. First operand 349 states and 364 transitions. Second operand 27 states. [2018-01-30 00:33:08,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 00:33:08,962 INFO L93 Difference]: Finished difference Result 602 states and 632 transitions. [2018-01-30 00:33:08,963 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-01-30 00:33:08,963 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 483 [2018-01-30 00:33:08,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 00:33:08,963 INFO L225 Difference]: With dead ends: 602 [2018-01-30 00:33:08,964 INFO L226 Difference]: Without dead ends: 362 [2018-01-30 00:33:08,964 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 506 GetRequests, 457 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 408 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=843, Invalid=1707, Unknown=0, NotChecked=0, Total=2550 [2018-01-30 00:33:08,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2018-01-30 00:33:08,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 357. [2018-01-30 00:33:08,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 357 states. [2018-01-30 00:33:08,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 372 transitions. [2018-01-30 00:33:08,972 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 372 transitions. Word has length 483 [2018-01-30 00:33:08,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 00:33:08,974 INFO L432 AbstractCegarLoop]: Abstraction has 357 states and 372 transitions. [2018-01-30 00:33:08,974 INFO L433 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-01-30 00:33:08,974 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 372 transitions. [2018-01-30 00:33:08,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 492 [2018-01-30 00:33:08,975 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 00:33:08,975 INFO L350 BasicCegarLoop]: trace histogram [39, 36, 36, 36, 36, 24, 14, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 6, 5, 5, 5, 5, 5, 5, 5, 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] [2018-01-30 00:33:08,976 INFO L371 AbstractCegarLoop]: === Iteration 31 === [mainErr0AssertViolation]=== [2018-01-30 00:33:08,976 INFO L82 PathProgramCache]: Analyzing trace with hash 1601256289, now seen corresponding path program 21 times [2018-01-30 00:33:08,976 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 00:33:08,976 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 00:33:08,976 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:33:08,976 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 00:33:08,976 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:33:08,985 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-30 00:33:08,985 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-30 00:33:08,985 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2018-01-30 00:33:08,990 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-30 00:33:09,004 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 00:33:09,009 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 00:33:09,016 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 00:33:09,035 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 00:33:09,069 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 00:33:09,117 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 00:33:14,845 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 00:33:14,847 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 00:33:14,851 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 00:33:15,436 INFO L134 CoverageAnalysis]: Checked inductivity of 5036 backedges. 1976 proven. 90 refuted. 0 times theorem prover too weak. 2970 trivial. 0 not checked. [2018-01-30 00:33:15,453 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-30 00:33:15,454 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2018-01-30 00:33:15,454 INFO L409 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-01-30 00:33:15,454 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-01-30 00:33:15,454 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2018-01-30 00:33:15,454 INFO L87 Difference]: Start difference. First operand 357 states and 372 transitions. Second operand 13 states. [2018-01-30 00:33:15,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 00:33:15,556 INFO L93 Difference]: Finished difference Result 496 states and 519 transitions. [2018-01-30 00:33:15,556 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-01-30 00:33:15,556 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 491 [2018-01-30 00:33:15,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 00:33:15,557 INFO L225 Difference]: With dead ends: 496 [2018-01-30 00:33:15,557 INFO L226 Difference]: Without dead ends: 383 [2018-01-30 00:33:15,557 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 500 GetRequests, 479 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=178, Invalid=328, Unknown=0, NotChecked=0, Total=506 [2018-01-30 00:33:15,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2018-01-30 00:33:15,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 373. [2018-01-30 00:33:15,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 373 states. [2018-01-30 00:33:15,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 388 transitions. [2018-01-30 00:33:15,562 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 388 transitions. Word has length 491 [2018-01-30 00:33:15,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 00:33:15,563 INFO L432 AbstractCegarLoop]: Abstraction has 373 states and 388 transitions. [2018-01-30 00:33:15,563 INFO L433 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-01-30 00:33:15,563 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 388 transitions. [2018-01-30 00:33:15,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 500 [2018-01-30 00:33:15,565 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 00:33:15,565 INFO L350 BasicCegarLoop]: trace histogram [39, 36, 36, 36, 36, 24, 14, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 7, 6, 6, 6, 6, 6, 6, 6, 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] [2018-01-30 00:33:15,565 INFO L371 AbstractCegarLoop]: === Iteration 32 === [mainErr0AssertViolation]=== [2018-01-30 00:33:15,565 INFO L82 PathProgramCache]: Analyzing trace with hash 2026389144, now seen corresponding path program 22 times [2018-01-30 00:33:15,565 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 00:33:15,565 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 00:33:15,566 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:33:15,566 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 00:33:15,566 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:33:15,573 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-30 00:33:15,573 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-30 00:33:15,574 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-30 00:33:15,590 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-30 00:33:15,631 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 00:33:15,634 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 00:33:15,764 INFO L134 CoverageAnalysis]: Checked inductivity of 5078 backedges. 1467 proven. 192 refuted. 0 times theorem prover too weak. 3419 trivial. 0 not checked. [2018-01-30 00:33:15,781 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-30 00:33:15,781 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2018-01-30 00:33:15,781 INFO L409 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-01-30 00:33:15,782 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-01-30 00:33:15,782 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2018-01-30 00:33:15,782 INFO L87 Difference]: Start difference. First operand 373 states and 388 transitions. Second operand 19 states. [2018-01-30 00:33:15,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 00:33:15,938 INFO L93 Difference]: Finished difference Result 630 states and 667 transitions. [2018-01-30 00:33:15,950 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-01-30 00:33:15,950 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 499 [2018-01-30 00:33:15,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 00:33:15,951 INFO L225 Difference]: With dead ends: 630 [2018-01-30 00:33:15,951 INFO L226 Difference]: Without dead ends: 381 [2018-01-30 00:33:15,952 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 514 GetRequests, 481 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=403, Invalid=787, Unknown=0, NotChecked=0, Total=1190 [2018-01-30 00:33:15,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2018-01-30 00:33:15,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 379. [2018-01-30 00:33:15,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 379 states. [2018-01-30 00:33:15,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 394 transitions. [2018-01-30 00:33:15,959 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 394 transitions. Word has length 499 [2018-01-30 00:33:15,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 00:33:15,959 INFO L432 AbstractCegarLoop]: Abstraction has 379 states and 394 transitions. [2018-01-30 00:33:15,959 INFO L433 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-01-30 00:33:15,959 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 394 transitions. [2018-01-30 00:33:15,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 518 [2018-01-30 00:33:15,961 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 00:33:15,961 INFO L350 BasicCegarLoop]: trace histogram [42, 39, 39, 39, 39, 27, 14, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 7, 6, 6, 6, 6, 6, 6, 6, 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] [2018-01-30 00:33:15,961 INFO L371 AbstractCegarLoop]: === Iteration 33 === [mainErr0AssertViolation]=== [2018-01-30 00:33:15,961 INFO L82 PathProgramCache]: Analyzing trace with hash 2101325872, now seen corresponding path program 23 times [2018-01-30 00:33:15,961 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 00:33:15,961 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 00:33:15,962 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:33:15,962 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 00:33:15,962 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:33:15,972 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-30 00:33:15,972 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-30 00:33:15,972 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2018-01-30 00:33:15,979 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-30 00:33:15,990 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:33:15,992 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:33:15,993 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:33:15,996 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:33:15,998 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:33:16,000 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:33:16,003 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:33:16,007 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:33:16,011 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:33:16,017 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:33:16,025 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:33:16,065 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:33:16,109 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:33:16,206 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:33:16,208 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 00:33:16,212 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 00:33:16,652 INFO L134 CoverageAnalysis]: Checked inductivity of 5762 backedges. 1752 proven. 243 refuted. 0 times theorem prover too weak. 3767 trivial. 0 not checked. [2018-01-30 00:33:16,669 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-30 00:33:16,669 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2018-01-30 00:33:16,669 INFO L409 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-01-30 00:33:16,670 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-01-30 00:33:16,670 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2018-01-30 00:33:16,670 INFO L87 Difference]: Start difference. First operand 379 states and 394 transitions. Second operand 21 states. [2018-01-30 00:33:16,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 00:33:16,819 INFO L93 Difference]: Finished difference Result 642 states and 679 transitions. [2018-01-30 00:33:16,819 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-01-30 00:33:16,820 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 517 [2018-01-30 00:33:16,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 00:33:16,820 INFO L225 Difference]: With dead ends: 642 [2018-01-30 00:33:16,820 INFO L226 Difference]: Without dead ends: 387 [2018-01-30 00:33:16,821 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 534 GetRequests, 497 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=498, Invalid=984, Unknown=0, NotChecked=0, Total=1482 [2018-01-30 00:33:16,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2018-01-30 00:33:16,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 385. [2018-01-30 00:33:16,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 385 states. [2018-01-30 00:33:16,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 400 transitions. [2018-01-30 00:33:16,826 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 400 transitions. Word has length 517 [2018-01-30 00:33:16,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 00:33:16,826 INFO L432 AbstractCegarLoop]: Abstraction has 385 states and 400 transitions. [2018-01-30 00:33:16,826 INFO L433 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-01-30 00:33:16,826 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 400 transitions. [2018-01-30 00:33:16,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 536 [2018-01-30 00:33:16,828 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 00:33:16,828 INFO L350 BasicCegarLoop]: trace histogram [45, 42, 42, 42, 42, 30, 14, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 7, 6, 6, 6, 6, 6, 6, 6, 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] [2018-01-30 00:33:16,828 INFO L371 AbstractCegarLoop]: === Iteration 34 === [mainErr0AssertViolation]=== [2018-01-30 00:33:16,828 INFO L82 PathProgramCache]: Analyzing trace with hash 227789768, now seen corresponding path program 24 times [2018-01-30 00:33:16,828 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 00:33:16,828 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 00:33:16,829 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:33:16,829 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 00:33:16,829 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:33:16,836 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-30 00:33:16,836 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-30 00:33:16,836 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-30 00:33:16,853 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-30 00:33:16,868 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:33:16,870 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:33:16,875 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:33:16,879 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:33:16,888 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:33:16,901 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:33:16,911 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:33:16,933 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:33:17,143 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:33:17,213 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:33:17,578 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:33:17,902 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:33:37,144 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:33:37,145 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 00:33:37,149 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 00:33:37,276 INFO L134 CoverageAnalysis]: Checked inductivity of 6500 backedges. 1243 proven. 80 refuted. 0 times theorem prover too weak. 5177 trivial. 0 not checked. [2018-01-30 00:33:37,295 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-30 00:33:37,295 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2018-01-30 00:33:37,295 INFO L409 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-01-30 00:33:37,295 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-01-30 00:33:37,295 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2018-01-30 00:33:37,295 INFO L87 Difference]: Start difference. First operand 385 states and 400 transitions. Second operand 13 states. [2018-01-30 00:33:37,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 00:33:37,409 INFO L93 Difference]: Finished difference Result 663 states and 702 transitions. [2018-01-30 00:33:37,409 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-01-30 00:33:37,409 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 535 [2018-01-30 00:33:37,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 00:33:37,410 INFO L225 Difference]: With dead ends: 663 [2018-01-30 00:33:37,410 INFO L226 Difference]: Without dead ends: 402 [2018-01-30 00:33:37,410 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 544 GetRequests, 523 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=178, Invalid=328, Unknown=0, NotChecked=0, Total=506 [2018-01-30 00:33:37,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2018-01-30 00:33:37,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 395. [2018-01-30 00:33:37,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 395 states. [2018-01-30 00:33:37,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 411 transitions. [2018-01-30 00:33:37,415 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 411 transitions. Word has length 535 [2018-01-30 00:33:37,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 00:33:37,415 INFO L432 AbstractCegarLoop]: Abstraction has 395 states and 411 transitions. [2018-01-30 00:33:37,415 INFO L433 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-01-30 00:33:37,415 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 411 transitions. [2018-01-30 00:33:37,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 566 [2018-01-30 00:33:37,418 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 00:33:37,418 INFO L350 BasicCegarLoop]: trace histogram [48, 45, 45, 45, 45, 30, 15, 15, 15, 15, 15, 14, 13, 13, 13, 13, 13, 13, 13, 7, 6, 6, 6, 6, 6, 6, 6, 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] [2018-01-30 00:33:37,418 INFO L371 AbstractCegarLoop]: === Iteration 35 === [mainErr0AssertViolation]=== [2018-01-30 00:33:37,418 INFO L82 PathProgramCache]: Analyzing trace with hash 910575260, now seen corresponding path program 25 times [2018-01-30 00:33:37,418 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 00:33:37,418 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 00:33:37,419 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:33:37,419 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 00:33:37,419 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:33:37,426 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-30 00:33:37,427 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-30 00:33:37,427 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2018-01-30 00:33:37,452 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-30 00:33:37,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 00:33:37,508 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 00:33:37,926 INFO L134 CoverageAnalysis]: Checked inductivity of 7448 backedges. 0 proven. 650 refuted. 0 times theorem prover too weak. 6798 trivial. 0 not checked. [2018-01-30 00:33:37,944 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-30 00:33:37,944 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2018-01-30 00:33:37,944 INFO L409 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-01-30 00:33:37,944 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-01-30 00:33:37,945 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=588, Unknown=0, NotChecked=0, Total=812 [2018-01-30 00:33:37,945 INFO L87 Difference]: Start difference. First operand 395 states and 411 transitions. Second operand 29 states. [2018-01-30 00:33:38,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 00:33:38,262 INFO L93 Difference]: Finished difference Result 686 states and 718 transitions. [2018-01-30 00:33:38,262 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-01-30 00:33:38,262 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 565 [2018-01-30 00:33:38,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 00:33:38,263 INFO L225 Difference]: With dead ends: 686 [2018-01-30 00:33:38,263 INFO L226 Difference]: Without dead ends: 408 [2018-01-30 00:33:38,264 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 590 GetRequests, 537 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 481 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=978, Invalid=1992, Unknown=0, NotChecked=0, Total=2970 [2018-01-30 00:33:38,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2018-01-30 00:33:38,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 403. [2018-01-30 00:33:38,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 403 states. [2018-01-30 00:33:38,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 419 transitions. [2018-01-30 00:33:38,270 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 419 transitions. Word has length 565 [2018-01-30 00:33:38,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 00:33:38,270 INFO L432 AbstractCegarLoop]: Abstraction has 403 states and 419 transitions. [2018-01-30 00:33:38,270 INFO L433 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-01-30 00:33:38,270 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 419 transitions. [2018-01-30 00:33:38,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 574 [2018-01-30 00:33:38,272 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 00:33:38,272 INFO L350 BasicCegarLoop]: trace histogram [48, 45, 45, 45, 45, 30, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 7, 6, 6, 6, 6, 6, 6, 6, 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] [2018-01-30 00:33:38,272 INFO L371 AbstractCegarLoop]: === Iteration 36 === [mainErr0AssertViolation]=== [2018-01-30 00:33:38,272 INFO L82 PathProgramCache]: Analyzing trace with hash -330150843, now seen corresponding path program 26 times [2018-01-30 00:33:38,272 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 00:33:38,273 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 00:33:38,273 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:33:38,273 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 00:33:38,273 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:33:38,283 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-30 00:33:38,283 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-30 00:33:38,283 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-30 00:33:38,296 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-30 00:33:38,313 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:33:38,348 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:33:38,354 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 00:33:38,357 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 00:33:38,638 INFO L134 CoverageAnalysis]: Checked inductivity of 7554 backedges. 0 proven. 756 refuted. 0 times theorem prover too weak. 6798 trivial. 0 not checked. [2018-01-30 00:33:38,657 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-30 00:33:38,658 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2018-01-30 00:33:38,658 INFO L409 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-01-30 00:33:38,658 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-01-30 00:33:38,658 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=675, Unknown=0, NotChecked=0, Total=930 [2018-01-30 00:33:38,658 INFO L87 Difference]: Start difference. First operand 403 states and 419 transitions. Second operand 31 states. [2018-01-30 00:33:39,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 00:33:39,002 INFO L93 Difference]: Finished difference Result 694 states and 726 transitions. [2018-01-30 00:33:39,003 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-01-30 00:33:39,003 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 573 [2018-01-30 00:33:39,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 00:33:39,004 INFO L225 Difference]: With dead ends: 694 [2018-01-30 00:33:39,004 INFO L226 Difference]: Without dead ends: 416 [2018-01-30 00:33:39,005 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 600 GetRequests, 543 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 560 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=1123, Invalid=2299, Unknown=0, NotChecked=0, Total=3422 [2018-01-30 00:33:39,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2018-01-30 00:33:39,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 411. [2018-01-30 00:33:39,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 411 states. [2018-01-30 00:33:39,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 427 transitions. [2018-01-30 00:33:39,009 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 427 transitions. Word has length 573 [2018-01-30 00:33:39,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 00:33:39,009 INFO L432 AbstractCegarLoop]: Abstraction has 411 states and 427 transitions. [2018-01-30 00:33:39,009 INFO L433 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-01-30 00:33:39,010 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 427 transitions. [2018-01-30 00:33:39,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 582 [2018-01-30 00:33:39,012 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 00:33:39,012 INFO L350 BasicCegarLoop]: trace histogram [48, 45, 45, 45, 45, 30, 16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 7, 6, 6, 6, 6, 6, 6, 6, 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] [2018-01-30 00:33:39,012 INFO L371 AbstractCegarLoop]: === Iteration 37 === [mainErr0AssertViolation]=== [2018-01-30 00:33:39,012 INFO L82 PathProgramCache]: Analyzing trace with hash 230070510, now seen corresponding path program 27 times [2018-01-30 00:33:39,012 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 00:33:39,012 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 00:33:39,013 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:33:39,013 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 00:33:39,013 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:33:39,022 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-30 00:33:39,022 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-30 00:33:39,022 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-30 00:33:39,040 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-30 00:33:39,055 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 00:33:39,060 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 00:33:39,068 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 00:33:39,089 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 00:33:39,803 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 00:33:39,965 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 00:33:40,544 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 00:33:40,797 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 00:33:40,799 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 00:33:40,803 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 00:33:40,976 INFO L134 CoverageAnalysis]: Checked inductivity of 7668 backedges. 1614 proven. 125 refuted. 0 times theorem prover too weak. 5929 trivial. 0 not checked. [2018-01-30 00:33:40,994 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-30 00:33:40,994 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2018-01-30 00:33:40,994 INFO L409 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-01-30 00:33:40,994 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-01-30 00:33:40,995 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2018-01-30 00:33:40,995 INFO L87 Difference]: Start difference. First operand 411 states and 427 transitions. Second operand 15 states. [2018-01-30 00:33:41,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 00:33:41,124 INFO L93 Difference]: Finished difference Result 699 states and 740 transitions. [2018-01-30 00:33:41,124 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-01-30 00:33:41,124 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 581 [2018-01-30 00:33:41,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 00:33:41,125 INFO L225 Difference]: With dead ends: 699 [2018-01-30 00:33:41,125 INFO L226 Difference]: Without dead ends: 428 [2018-01-30 00:33:41,126 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 592 GetRequests, 567 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=243, Invalid=459, Unknown=0, NotChecked=0, Total=702 [2018-01-30 00:33:41,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2018-01-30 00:33:41,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 421. [2018-01-30 00:33:41,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 421 states. [2018-01-30 00:33:41,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 438 transitions. [2018-01-30 00:33:41,131 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 438 transitions. Word has length 581 [2018-01-30 00:33:41,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 00:33:41,131 INFO L432 AbstractCegarLoop]: Abstraction has 421 states and 438 transitions. [2018-01-30 00:33:41,131 INFO L433 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-01-30 00:33:41,131 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 438 transitions. [2018-01-30 00:33:41,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 612 [2018-01-30 00:33:41,134 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 00:33:41,134 INFO L350 BasicCegarLoop]: trace histogram [51, 48, 48, 48, 48, 30, 18, 18, 18, 18, 18, 16, 15, 15, 15, 15, 15, 15, 15, 7, 6, 6, 6, 6, 6, 6, 6, 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] [2018-01-30 00:33:41,134 INFO L371 AbstractCegarLoop]: === Iteration 38 === [mainErr0AssertViolation]=== [2018-01-30 00:33:41,135 INFO L82 PathProgramCache]: Analyzing trace with hash -706581182, now seen corresponding path program 28 times [2018-01-30 00:33:41,135 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 00:33:41,135 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 00:33:41,135 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:33:41,135 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 00:33:41,135 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:33:41,145 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-30 00:33:41,145 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-30 00:33:41,145 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2018-01-30 00:33:41,157 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-30 00:33:41,207 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 00:33:41,211 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 00:33:41,475 INFO L134 CoverageAnalysis]: Checked inductivity of 8706 backedges. 2439 proven. 300 refuted. 0 times theorem prover too weak. 5967 trivial. 0 not checked. [2018-01-30 00:33:41,492 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-30 00:33:41,493 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2018-01-30 00:33:41,493 INFO L409 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-01-30 00:33:41,493 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-01-30 00:33:41,493 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2018-01-30 00:33:41,493 INFO L87 Difference]: Start difference. First operand 421 states and 438 transitions. Second operand 23 states. [2018-01-30 00:33:41,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 00:33:41,724 INFO L93 Difference]: Finished difference Result 708 states and 749 transitions. [2018-01-30 00:33:41,724 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-01-30 00:33:41,724 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 611 [2018-01-30 00:33:41,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 00:33:41,725 INFO L225 Difference]: With dead ends: 708 [2018-01-30 00:33:41,725 INFO L226 Difference]: Without dead ends: 427 [2018-01-30 00:33:41,726 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 630 GetRequests, 589 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 280 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=603, Invalid=1203, Unknown=0, NotChecked=0, Total=1806 [2018-01-30 00:33:41,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2018-01-30 00:33:41,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 427. [2018-01-30 00:33:41,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 427 states. [2018-01-30 00:33:41,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 444 transitions. [2018-01-30 00:33:41,731 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 444 transitions. Word has length 611 [2018-01-30 00:33:41,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 00:33:41,732 INFO L432 AbstractCegarLoop]: Abstraction has 427 states and 444 transitions. [2018-01-30 00:33:41,732 INFO L433 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-01-30 00:33:41,732 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 444 transitions. [2018-01-30 00:33:41,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 630 [2018-01-30 00:33:41,734 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 00:33:41,734 INFO L350 BasicCegarLoop]: trace histogram [54, 51, 51, 51, 51, 33, 18, 18, 18, 18, 18, 16, 15, 15, 15, 15, 15, 15, 15, 7, 6, 6, 6, 6, 6, 6, 6, 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] [2018-01-30 00:33:41,734 INFO L371 AbstractCegarLoop]: === Iteration 39 === [mainErr0AssertViolation]=== [2018-01-30 00:33:41,735 INFO L82 PathProgramCache]: Analyzing trace with hash 1488424026, now seen corresponding path program 29 times [2018-01-30 00:33:41,735 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 00:33:41,735 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 00:33:41,735 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:33:41,735 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 00:33:41,735 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:33:41,744 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-30 00:33:41,744 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-30 00:33:41,744 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2018-01-30 00:33:41,749 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-30 00:33:41,762 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:33:41,763 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:33:41,765 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:33:41,766 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:33:41,768 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:33:41,770 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:33:41,772 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:33:41,775 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:33:41,778 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:33:41,781 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:33:41,784 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:33:41,790 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:33:41,796 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:33:41,807 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:33:41,824 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:33:41,890 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:33:42,037 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:33:42,360 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:33:42,363 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 00:33:42,367 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 00:33:42,613 INFO L134 CoverageAnalysis]: Checked inductivity of 9606 backedges. 4358 proven. 268 refuted. 0 times theorem prover too weak. 4980 trivial. 0 not checked. [2018-01-30 00:33:42,631 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-30 00:33:42,631 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2018-01-30 00:33:42,631 INFO L409 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-01-30 00:33:42,631 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-01-30 00:33:42,632 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2018-01-30 00:33:42,632 INFO L87 Difference]: Start difference. First operand 427 states and 444 transitions. Second operand 21 states. [2018-01-30 00:33:42,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 00:33:42,875 INFO L93 Difference]: Finished difference Result 744 states and 790 transitions. [2018-01-30 00:33:42,875 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-01-30 00:33:42,875 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 629 [2018-01-30 00:33:42,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 00:33:42,876 INFO L225 Difference]: With dead ends: 744 [2018-01-30 00:33:42,876 INFO L226 Difference]: Without dead ends: 457 [2018-01-30 00:33:42,877 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 646 GetRequests, 609 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=498, Invalid=984, Unknown=0, NotChecked=0, Total=1482 [2018-01-30 00:33:42,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states. [2018-01-30 00:33:42,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 457. [2018-01-30 00:33:42,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 457 states. [2018-01-30 00:33:42,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 457 states to 457 states and 477 transitions. [2018-01-30 00:33:42,884 INFO L78 Accepts]: Start accepts. Automaton has 457 states and 477 transitions. Word has length 629 [2018-01-30 00:33:42,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 00:33:42,885 INFO L432 AbstractCegarLoop]: Abstraction has 457 states and 477 transitions. [2018-01-30 00:33:42,885 INFO L433 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-01-30 00:33:42,885 INFO L276 IsEmpty]: Start isEmpty. Operand 457 states and 477 transitions. [2018-01-30 00:33:42,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 720 [2018-01-30 00:33:42,888 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 00:33:42,888 INFO L350 BasicCegarLoop]: trace histogram [63, 60, 60, 60, 60, 33, 27, 27, 27, 27, 27, 16, 15, 15, 15, 15, 15, 15, 15, 7, 6, 6, 6, 6, 6, 6, 6, 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] [2018-01-30 00:33:42,888 INFO L371 AbstractCegarLoop]: === Iteration 40 === [mainErr0AssertViolation]=== [2018-01-30 00:33:42,888 INFO L82 PathProgramCache]: Analyzing trace with hash 1942570582, now seen corresponding path program 30 times [2018-01-30 00:33:42,888 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 00:33:42,888 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 00:33:42,889 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:33:42,889 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 00:33:42,889 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:33:42,902 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-30 00:33:42,902 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-30 00:33:42,902 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2018-01-30 00:33:42,907 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-30 00:33:42,926 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:33:42,928 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:33:42,932 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:33:42,936 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:33:42,942 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:33:42,954 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:33:42,968 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:33:42,984 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:33:43,418 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:33:43,481 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:33:43,635 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:33:43,714 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:33:44,168 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:33:44,871 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:33:44,903 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:33:44,904 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 00:33:44,909 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 00:33:45,112 INFO L134 CoverageAnalysis]: Checked inductivity of 13422 backedges. 5746 proven. 132 refuted. 0 times theorem prover too weak. 7544 trivial. 0 not checked. [2018-01-30 00:33:45,130 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-30 00:33:45,130 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2018-01-30 00:33:45,130 INFO L409 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-01-30 00:33:45,131 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-01-30 00:33:45,131 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2018-01-30 00:33:45,131 INFO L87 Difference]: Start difference. First operand 457 states and 477 transitions. Second operand 18 states. [2018-01-30 00:33:45,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 00:33:45,327 INFO L93 Difference]: Finished difference Result 664 states and 697 transitions. [2018-01-30 00:33:45,327 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-01-30 00:33:45,327 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 719 [2018-01-30 00:33:45,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 00:33:45,328 INFO L225 Difference]: With dead ends: 664 [2018-01-30 00:33:45,328 INFO L226 Difference]: Without dead ends: 483 [2018-01-30 00:33:45,329 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 732 GetRequests, 702 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=260, Invalid=732, Unknown=0, NotChecked=0, Total=992 [2018-01-30 00:33:45,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2018-01-30 00:33:45,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 473. [2018-01-30 00:33:45,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 473 states. [2018-01-30 00:33:45,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 493 transitions. [2018-01-30 00:33:45,334 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 493 transitions. Word has length 719 [2018-01-30 00:33:45,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 00:33:45,334 INFO L432 AbstractCegarLoop]: Abstraction has 473 states and 493 transitions. [2018-01-30 00:33:45,334 INFO L433 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-01-30 00:33:45,334 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 493 transitions. [2018-01-30 00:33:45,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 728 [2018-01-30 00:33:45,337 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 00:33:45,337 INFO L350 BasicCegarLoop]: trace histogram [63, 60, 60, 60, 60, 33, 27, 27, 27, 27, 27, 16, 15, 15, 15, 15, 15, 15, 15, 8, 7, 7, 7, 7, 7, 7, 7, 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] [2018-01-30 00:33:45,337 INFO L371 AbstractCegarLoop]: === Iteration 41 === [mainErr0AssertViolation]=== [2018-01-30 00:33:45,337 INFO L82 PathProgramCache]: Analyzing trace with hash -1131215603, now seen corresponding path program 31 times [2018-01-30 00:33:45,338 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 00:33:45,338 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 00:33:45,338 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:33:45,338 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 00:33:45,338 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:33:45,348 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-30 00:33:45,348 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-30 00:33:45,348 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-30 00:33:45,363 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 00:33:45,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 00:33:45,432 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 00:33:45,761 INFO L134 CoverageAnalysis]: Checked inductivity of 13472 backedges. 0 proven. 870 refuted. 0 times theorem prover too weak. 12602 trivial. 0 not checked. [2018-01-30 00:33:45,779 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-30 00:33:45,779 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2018-01-30 00:33:45,779 INFO L409 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-01-30 00:33:45,779 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-01-30 00:33:45,779 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=288, Invalid=768, Unknown=0, NotChecked=0, Total=1056 [2018-01-30 00:33:45,780 INFO L87 Difference]: Start difference. First operand 473 states and 493 transitions. Second operand 33 states. [2018-01-30 00:33:46,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 00:33:46,200 INFO L93 Difference]: Finished difference Result 826 states and 866 transitions. [2018-01-30 00:33:46,216 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-01-30 00:33:46,216 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 727 [2018-01-30 00:33:46,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 00:33:46,217 INFO L225 Difference]: With dead ends: 826 [2018-01-30 00:33:46,217 INFO L226 Difference]: Without dead ends: 486 [2018-01-30 00:33:46,218 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 756 GetRequests, 695 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 645 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=1278, Invalid=2628, Unknown=0, NotChecked=0, Total=3906 [2018-01-30 00:33:46,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 486 states. [2018-01-30 00:33:46,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 486 to 481. [2018-01-30 00:33:46,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 481 states. [2018-01-30 00:33:46,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 501 transitions. [2018-01-30 00:33:46,229 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 501 transitions. Word has length 727 [2018-01-30 00:33:46,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 00:33:46,229 INFO L432 AbstractCegarLoop]: Abstraction has 481 states and 501 transitions. [2018-01-30 00:33:46,229 INFO L433 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-01-30 00:33:46,229 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 501 transitions. [2018-01-30 00:33:46,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 736 [2018-01-30 00:33:46,232 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 00:33:46,232 INFO L350 BasicCegarLoop]: trace histogram [63, 60, 60, 60, 60, 33, 27, 27, 27, 27, 27, 17, 16, 16, 16, 16, 16, 16, 16, 8, 7, 7, 7, 7, 7, 7, 7, 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] [2018-01-30 00:33:46,232 INFO L371 AbstractCegarLoop]: === Iteration 42 === [mainErr0AssertViolation]=== [2018-01-30 00:33:46,233 INFO L82 PathProgramCache]: Analyzing trace with hash 1226100854, now seen corresponding path program 32 times [2018-01-30 00:33:46,233 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 00:33:46,233 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 00:33:46,233 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:33:46,233 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 00:33:46,233 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:33:46,258 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-30 00:33:46,258 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-30 00:33:46,258 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-30 00:33:46,267 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-30 00:33:46,286 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:33:46,329 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:33:46,337 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 00:33:46,341 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 00:33:46,719 INFO L134 CoverageAnalysis]: Checked inductivity of 13594 backedges. 0 proven. 992 refuted. 0 times theorem prover too weak. 12602 trivial. 0 not checked. [2018-01-30 00:33:46,738 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-30 00:33:46,739 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2018-01-30 00:33:46,739 INFO L409 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-01-30 00:33:46,739 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-01-30 00:33:46,739 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=323, Invalid=867, Unknown=0, NotChecked=0, Total=1190 [2018-01-30 00:33:46,739 INFO L87 Difference]: Start difference. First operand 481 states and 501 transitions. Second operand 35 states. [2018-01-30 00:33:47,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 00:33:47,372 INFO L93 Difference]: Finished difference Result 834 states and 874 transitions. [2018-01-30 00:33:47,372 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-01-30 00:33:47,373 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 735 [2018-01-30 00:33:47,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 00:33:47,374 INFO L225 Difference]: With dead ends: 834 [2018-01-30 00:33:47,374 INFO L226 Difference]: Without dead ends: 494 [2018-01-30 00:33:47,375 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 766 GetRequests, 701 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 736 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1443, Invalid=2979, Unknown=0, NotChecked=0, Total=4422 [2018-01-30 00:33:47,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 494 states. [2018-01-30 00:33:47,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 494 to 489. [2018-01-30 00:33:47,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 489 states. [2018-01-30 00:33:47,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 509 transitions. [2018-01-30 00:33:47,380 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 509 transitions. Word has length 735 [2018-01-30 00:33:47,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 00:33:47,380 INFO L432 AbstractCegarLoop]: Abstraction has 489 states and 509 transitions. [2018-01-30 00:33:47,380 INFO L433 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-01-30 00:33:47,380 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 509 transitions. [2018-01-30 00:33:47,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 744 [2018-01-30 00:33:47,383 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 00:33:47,383 INFO L350 BasicCegarLoop]: trace histogram [63, 60, 60, 60, 60, 33, 27, 27, 27, 27, 27, 18, 17, 17, 17, 17, 17, 17, 17, 8, 7, 7, 7, 7, 7, 7, 7, 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] [2018-01-30 00:33:47,383 INFO L371 AbstractCegarLoop]: === Iteration 43 === [mainErr0AssertViolation]=== [2018-01-30 00:33:47,383 INFO L82 PathProgramCache]: Analyzing trace with hash -659741985, now seen corresponding path program 33 times [2018-01-30 00:33:47,384 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 00:33:47,384 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 00:33:47,384 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:33:47,384 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 00:33:47,384 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:33:47,394 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-30 00:33:47,394 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-30 00:33:47,394 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-30 00:33:47,409 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-30 00:33:47,428 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 00:33:47,433 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 00:33:47,484 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 00:33:47,500 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 00:33:47,755 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 00:33:47,779 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 00:33:47,873 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 00:33:47,961 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 00:33:48,818 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 00:33:48,820 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 00:33:48,825 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 00:33:49,037 INFO L134 CoverageAnalysis]: Checked inductivity of 13724 backedges. 5632 proven. 182 refuted. 0 times theorem prover too weak. 7910 trivial. 0 not checked. [2018-01-30 00:33:49,055 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-30 00:33:49,055 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2018-01-30 00:33:49,055 INFO L409 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-01-30 00:33:49,055 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-01-30 00:33:49,055 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2018-01-30 00:33:49,056 INFO L87 Difference]: Start difference. First operand 489 states and 509 transitions. Second operand 17 states. [2018-01-30 00:33:49,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 00:33:49,495 INFO L93 Difference]: Finished difference Result 696 states and 729 transitions. [2018-01-30 00:33:49,495 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-01-30 00:33:49,495 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 743 [2018-01-30 00:33:49,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 00:33:49,497 INFO L225 Difference]: With dead ends: 696 [2018-01-30 00:33:49,497 INFO L226 Difference]: Without dead ends: 515 [2018-01-30 00:33:49,497 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 756 GetRequests, 727 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=318, Invalid=612, Unknown=0, NotChecked=0, Total=930 [2018-01-30 00:33:49,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2018-01-30 00:33:49,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 505. [2018-01-30 00:33:49,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 505 states. [2018-01-30 00:33:49,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 505 states to 505 states and 525 transitions. [2018-01-30 00:33:49,518 INFO L78 Accepts]: Start accepts. Automaton has 505 states and 525 transitions. Word has length 743 [2018-01-30 00:33:49,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 00:33:49,518 INFO L432 AbstractCegarLoop]: Abstraction has 505 states and 525 transitions. [2018-01-30 00:33:49,519 INFO L433 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-01-30 00:33:49,519 INFO L276 IsEmpty]: Start isEmpty. Operand 505 states and 525 transitions. [2018-01-30 00:33:49,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 752 [2018-01-30 00:33:49,522 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 00:33:49,522 INFO L350 BasicCegarLoop]: trace histogram [63, 60, 60, 60, 60, 33, 27, 27, 27, 27, 27, 18, 17, 17, 17, 17, 17, 17, 17, 9, 8, 8, 8, 8, 8, 8, 8, 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] [2018-01-30 00:33:49,522 INFO L371 AbstractCegarLoop]: === Iteration 44 === [mainErr0AssertViolation]=== [2018-01-30 00:33:49,522 INFO L82 PathProgramCache]: Analyzing trace with hash -1233500010, now seen corresponding path program 34 times [2018-01-30 00:33:49,523 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 00:33:49,523 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 00:33:49,523 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:33:49,523 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 00:33:49,524 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:33:49,550 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-30 00:33:49,550 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-30 00:33:49,550 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2018-01-30 00:33:49,576 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST Waiting until toolchain timeout for monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-30 00:33:50,085 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 00:33:50,090 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 00:33:50,492 INFO L134 CoverageAnalysis]: Checked inductivity of 13782 backedges. 0 proven. 1122 refuted. 0 times theorem prover too weak. 12660 trivial. 0 not checked. [2018-01-30 00:33:50,512 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-30 00:33:50,512 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2018-01-30 00:33:50,513 INFO L409 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-01-30 00:33:50,513 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-01-30 00:33:50,513 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=360, Invalid=972, Unknown=0, NotChecked=0, Total=1332 [2018-01-30 00:33:50,513 INFO L87 Difference]: Start difference. First operand 505 states and 525 transitions. Second operand 37 states. [2018-01-30 00:33:50,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 00:33:50,922 INFO L93 Difference]: Finished difference Result 874 states and 914 transitions. [2018-01-30 00:33:50,923 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-01-30 00:33:50,923 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 751 [2018-01-30 00:33:50,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 00:33:50,924 INFO L225 Difference]: With dead ends: 874 [2018-01-30 00:33:50,924 INFO L226 Difference]: Without dead ends: 518 [2018-01-30 00:33:50,926 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 784 GetRequests, 715 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 833 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1618, Invalid=3352, Unknown=0, NotChecked=0, Total=4970 [2018-01-30 00:33:50,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 518 states. [2018-01-30 00:33:50,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 518 to 513. [2018-01-30 00:33:50,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 513 states. [2018-01-30 00:33:50,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 533 transitions. [2018-01-30 00:33:50,932 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 533 transitions. Word has length 751 [2018-01-30 00:33:50,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 00:33:50,932 INFO L432 AbstractCegarLoop]: Abstraction has 513 states and 533 transitions. [2018-01-30 00:33:50,932 INFO L433 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-01-30 00:33:50,932 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 533 transitions. [2018-01-30 00:33:50,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 760 [2018-01-30 00:33:50,936 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 00:33:50,936 INFO L350 BasicCegarLoop]: trace histogram [63, 60, 60, 60, 60, 33, 27, 27, 27, 27, 27, 19, 18, 18, 18, 18, 18, 18, 18, 9, 8, 8, 8, 8, 8, 8, 8, 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] [2018-01-30 00:33:50,936 INFO L371 AbstractCegarLoop]: === Iteration 45 === [mainErr0AssertViolation]=== [2018-01-30 00:33:50,936 INFO L82 PathProgramCache]: Analyzing trace with hash -1797609217, now seen corresponding path program 35 times [2018-01-30 00:33:50,936 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 00:33:50,936 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 00:33:50,937 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:33:50,937 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 00:33:50,937 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:33:50,947 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-30 00:33:50,947 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-30 00:33:50,947 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-30 00:33:50,963 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-30 00:33:50,978 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:33:50,980 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:33:50,981 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:33:50,983 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:33:50,985 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:33:50,987 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:33:50,989 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:33:50,992 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:33:50,995 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:33:50,998 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:33:51,003 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:33:51,009 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:33:51,013 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:33:51,020 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:33:51,032 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:33:51,051 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:33:51,136 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:33:51,262 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:33:51,432 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:33:51,821 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:33:53,310 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:34:04,871 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:34:04,878 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 00:34:04,889 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 00:34:05,128 INFO L134 CoverageAnalysis]: Checked inductivity of 13920 backedges. 5632 proven. 240 refuted. 0 times theorem prover too weak. 8048 trivial. 0 not checked. [2018-01-30 00:34:05,150 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-30 00:34:05,150 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2018-01-30 00:34:05,150 INFO L409 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-01-30 00:34:05,150 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-01-30 00:34:05,150 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2018-01-30 00:34:05,150 INFO L87 Difference]: Start difference. First operand 513 states and 533 transitions. Second operand 19 states. [2018-01-30 00:34:05,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 00:34:05,320 INFO L93 Difference]: Finished difference Result 720 states and 753 transitions. [2018-01-30 00:34:05,320 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-01-30 00:34:05,320 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 759 [2018-01-30 00:34:05,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 00:34:05,322 INFO L225 Difference]: With dead ends: 720 [2018-01-30 00:34:05,322 INFO L226 Difference]: Without dead ends: 539 [2018-01-30 00:34:05,322 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 774 GetRequests, 741 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=403, Invalid=787, Unknown=0, NotChecked=0, Total=1190 [2018-01-30 00:34:05,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2018-01-30 00:34:05,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 529. [2018-01-30 00:34:05,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 529 states. [2018-01-30 00:34:05,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 529 states to 529 states and 549 transitions. [2018-01-30 00:34:05,328 INFO L78 Accepts]: Start accepts. Automaton has 529 states and 549 transitions. Word has length 759 [2018-01-30 00:34:05,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 00:34:05,329 INFO L432 AbstractCegarLoop]: Abstraction has 529 states and 549 transitions. [2018-01-30 00:34:05,329 INFO L433 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-01-30 00:34:05,329 INFO L276 IsEmpty]: Start isEmpty. Operand 529 states and 549 transitions. [2018-01-30 00:34:05,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 768 [2018-01-30 00:34:05,332 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 00:34:05,332 INFO L350 BasicCegarLoop]: trace histogram [63, 60, 60, 60, 60, 33, 27, 27, 27, 27, 27, 19, 18, 18, 18, 18, 18, 18, 18, 10, 9, 9, 9, 9, 9, 9, 9, 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] [2018-01-30 00:34:05,332 INFO L371 AbstractCegarLoop]: === Iteration 46 === [mainErr0AssertViolation]=== [2018-01-30 00:34:05,333 INFO L82 PathProgramCache]: Analyzing trace with hash 1347399350, now seen corresponding path program 36 times [2018-01-30 00:34:05,333 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 00:34:05,333 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 00:34:05,333 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:34:05,333 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 00:34:05,333 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:34:05,344 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-30 00:34:05,344 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-30 00:34:05,344 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2018-01-30 00:34:05,355 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE Waiting until toolchain timeout for monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-30 00:34:05,374 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:34:05,377 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:34:05,381 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:34:05,384 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:34:05,392 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:34:05,405 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:34:05,435 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:34:05,472 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:34:05,501 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:34:05,527 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:34:05,569 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:34:05,633 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:34:05,692 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command Received shutdown request... [2018-01-30 00:34:05,927 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:34:05,990 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:34:06,101 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:34:06,210 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:34:06,385 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command Cannot interrupt operation gracefully because timeout expired. Forcing shutdown